{"id":53828,"date":"2025-08-12T17:40:33","date_gmt":"2025-08-12T09:40:33","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/53828.html"},"modified":"2025-08-12T17:40:33","modified_gmt":"2025-08-12T09:40:33","slug":"%e3%80%90spring-boot-%e5%bf%ab%e9%80%9f%e5%85%a5%e9%97%a8%e3%80%91%e4%b9%9d%e3%80%81%e4%ba%8b%e5%8a%a1%e7%ae%a1%e7%90%86","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/53828.html","title":{"rendered":"\u3010Spring Boot \u5feb\u901f\u5165\u95e8\u3011\u4e5d\u3001\u4e8b\u52a1\u7ba1\u7406"},"content":{"rendered":"<\/p>\n<h4>\u76ee\u5f55<\/h4>\n<ul>\n<li>\u4e8b\u52a1\u7ba1\u7406<\/li>\n<li>\n<ul>\n<li>\u4e8b\u52a1\u56de\u987e<\/li>\n<li>Spring \u4e8b\u52a1\u7ba1\u7406\u57fa\u7840<\/li>\n<li>Spring \u4e8b\u52a1\u7ba1\u7406\u8fdb\u9636<\/li>\n<li>\n<ul>\n<li>rollbackFor<\/li>\n<li>propagation<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>\u4e8b\u52a1\u7ba1\u7406<\/h2>\n<h3>\u4e8b\u52a1\u56de\u987e<\/h3>\n<p>\u6982\u5ff5&#xff1a;\u4e8b\u7269\u662f\u4e00\u7ec4\u64cd\u4f5c\u7684\u96c6\u5408&#xff0c;\u5b83\u662f\u4e00\u4e2a\u4e0d\u53ef\u5206\u5272\u7684\u5de5\u4f5c\u5355\u4f4d&#xff0c;\u8fd9\u4e9b\u64cd\u4f5c\u8981\u4e48\u540c\u65f6\u6210\u529f&#xff0c;\u8981\u4e48\u540c\u65f6\u5931\u8d25<\/p>\n<p>\u64cd\u4f5c&#xff1a;<\/p>\n<ul>\n<li>\u5f00\u542f\u4e8b\u52a1&#xff08;\u4e00\u7ec4\u64cd\u4f5c\u5f00\u59cb\u524d&#xff0c;\u5f00\u542f\u4e8b\u52a1&#xff09;&#xff1a;start transaction \/ begin ;<\/li>\n<li>\u63d0\u4ea4\u4e8b\u52a1&#xff08;\u8fd9\u7ec4\u64cd\u4f5c\u5168\u90e8\u6210\u529f\u540e&#xff0c;\u63d0\u4ea4\u4e8b\u52a1&#xff09;&#xff1a;commit ;<\/li>\n<li>\u56de\u6eda\u4e8b\u52a1&#xff08;\u4e2d\u95f4\u4efb\u4f55\u4e00\u4e2a\u64cd\u4f5c\u51fa\u73b0\u5f02\u5e38&#xff0c;\u56de\u6eda\u4e8b\u52a1&#xff09;&#xff1a;rollback ;<\/li>\n<\/ul>\n<p>\u4e8b\u52a1\u7684\u5fc5\u8981\u6027&#xff1a;\u5f53\u4e00\u7ec4\u64cd\u4f5c&#xff08;\u5982 \u201c\u5220\u9664\u90e8\u95e8 &#043; \u5220\u9664\u8be5\u90e8\u95e8\u4e0b\u7684\u5458\u5de5\u201d&#xff09;\u9700\u8981\u4fdd\u8bc1\u6570\u636e\u4e00\u81f4\u6027\u65f6&#xff0c;\u5fc5\u987b\u901a\u8fc7\u4e8b\u52a1\u63a7\u5236\u3002\u82e5\u6ca1\u6709\u4e8b\u52a1&#xff0c;\u67d0\u4e00\u6b65\u64cd\u4f5c\u5f02\u5e38\u53ef\u80fd\u5bfc\u81f4\u90e8\u5206\u64cd\u4f5c\u751f\u6548\u3001\u90e8\u5206\u5931\u6548&#xff0c;\u9020\u6210\u6570\u636e\u4e0d\u4e00\u81f4&#xff08;\u4f8b\u5982&#xff1a;\u5220\u9664\u90e8\u95e8\u540e\u51fa\u73b0\u5f02\u5e38&#xff0c;\u5458\u5de5\u6570\u636e\u672a\u88ab\u5220\u9664&#xff0c;\u5bfc\u81f4\u6570\u636e\u5173\u8054\u9519\u8bef&#xff09;\u3002<\/p>\n<h3>Spring \u4e8b\u52a1\u7ba1\u7406\u57fa\u7840<\/h3>\n<p>\u5728\u5458\u5de5\u90e8\u95e8\u4e2d&#xff0c;\u5173\u4e8e\u90e8\u95e8\u7684\u4ee3\u7801\u4e3a&#xff1a;<\/p>\n<ul>\n<li>controller&#xff1a;<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>example<span class=\"token punctuation\">.<\/span>demo<span class=\"token punctuation\">.<\/span>pojo<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Dept<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>example<span class=\"token punctuation\">.<\/span>demo<span class=\"token punctuation\">.<\/span>responed<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Result<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>example<span class=\"token punctuation\">.<\/span>demo<span class=\"token punctuation\">.<\/span>service<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">DeptService<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">lombok<span class=\"token punctuation\">.<\/span>extern<span class=\"token punctuation\">.<\/span>slf4j<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Slf4j<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>springframework<span class=\"token punctuation\">.<\/span>beans<span class=\"token punctuation\">.<\/span>factory<span class=\"token punctuation\">.<\/span>annotation<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Autowired<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>springframework<span class=\"token punctuation\">.<\/span>web<span class=\"token punctuation\">.<\/span>bind<span class=\"token punctuation\">.<\/span>annotation<span class=\"token punctuation\">.<\/span><\/span><span class=\"token operator\">*<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>util<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">List<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token annotation punctuation\">&#064;Slf4j<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;RequestMapping<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\/depts&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;RestController<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">DeptController<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Autowired<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">DeptService<\/span> deptService<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u67e5\u8be2\u90e8\u95e8\u6570\u636e<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;GetMapping<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">Result<\/span> <span class=\"token function\">list<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n        log<span class=\"token punctuation\">.<\/span><span class=\"token function\">info<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u67e5\u8be2\u5168\u90e8\u90e8\u95e8\u6570\u636e&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/\u8c03\u7528service\u67e5\u8be2\u90e8\u95e8\u6570\u636e<\/span><br \/>\n        <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Dept<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> deptList <span class=\"token operator\">&#061;<\/span>  deptService<span class=\"token punctuation\">.<\/span><span class=\"token function\">list<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token class-name\">Result<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">success<\/span><span class=\"token punctuation\">(<\/span>deptList<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u5220\u9664\u90e8\u95e8<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;DeleteMapping<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\/{id}&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">Result<\/span> <span class=\"token function\">delete<\/span><span class=\"token punctuation\">(<\/span><span class=\"token annotation punctuation\">&#064;PathVariable<\/span> <span class=\"token class-name\">Integer<\/span> id<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n        log<span class=\"token punctuation\">.<\/span><span class=\"token function\">info<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u6839\u636eid\u5220\u9664\u90e8\u95e8:{}&#034;<\/span><span class=\"token punctuation\">,<\/span>id<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/\u8c03\u7528service\u5220\u9664\u90e8\u95e8<\/span><br \/>\n        deptService<span class=\"token punctuation\">.<\/span><span class=\"token function\">deleteById<\/span><span class=\"token punctuation\">(<\/span>id<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token class-name\">Result<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">success<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/\u65b0\u589e\u90e8\u95e8<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;PostMapping<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">Result<\/span> <span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token annotation punctuation\">&#064;RequestBody<\/span> <span class=\"token class-name\">Dept<\/span> dept<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n        log<span class=\"token punctuation\">.<\/span><span class=\"token function\">info<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u65b0\u589e\u90e8\u95e8: {}&#034;<\/span> <span class=\"token punctuation\">,<\/span> dept<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/\u8c03\u7528service\u65b0\u589e\u90e8\u95e8<\/span><br \/>\n        deptService<span class=\"token punctuation\">.<\/span><span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span>dept<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token class-name\">Result<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">success<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<li>service \u63a5\u53e3&#xff1a;<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>example<span class=\"token punctuation\">.<\/span>demo<span class=\"token punctuation\">.<\/span>pojo<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Dept<\/span><\/span><span class=\"token punctuation\">;<\/span>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>util<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">List<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">interface<\/span> <span class=\"token class-name\">DeptService<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">void<\/span> <span class=\"token function\">deleteById<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Integer<\/span> id<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u67e5\u8be2\u5168\u90e8\u90e8\u95e8\u6570\u636e<\/span><br \/>\n    <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Dept<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token function\">list<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u5220\u9664\u90e8\u95e8<\/span><br \/>\n    <span class=\"token keyword\">void<\/span> <span class=\"token function\">delete<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Integer<\/span> id<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u65b0\u589e\u90e8\u95e8<\/span><br \/>\n    <span class=\"token keyword\">void<\/span> <span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Dept<\/span> dept<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<li>service \u5b9e\u73b0\u7c7b<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>example<span class=\"token punctuation\">.<\/span>demo<span class=\"token punctuation\">.<\/span>mapper<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">DeptMapper<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>example<span class=\"token punctuation\">.<\/span>demo<span class=\"token punctuation\">.<\/span>mapper<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">EmpMapper<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>example<span class=\"token punctuation\">.<\/span>demo<span class=\"token punctuation\">.<\/span>pojo<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Dept<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>example<span class=\"token punctuation\">.<\/span>demo<span class=\"token punctuation\">.<\/span>service<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">DeptService<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>springframework<span class=\"token punctuation\">.<\/span>beans<span class=\"token punctuation\">.<\/span>factory<span class=\"token punctuation\">.<\/span>annotation<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Autowired<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>springframework<span class=\"token punctuation\">.<\/span>stereotype<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Service<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>springframework<span class=\"token punctuation\">.<\/span>transaction<span class=\"token punctuation\">.<\/span>annotation<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Transactional<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>time<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">LocalDateTime<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>util<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">List<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token annotation punctuation\">&#064;Service<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">DeptServiceImpl<\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">DeptService<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Autowired<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">DeptMapper<\/span> deptMapper<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">deleteById<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Integer<\/span> id<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        deptMapper<span class=\"token punctuation\">.<\/span><span class=\"token function\">deleteById<\/span><span class=\"token punctuation\">(<\/span>id<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Dept<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token function\">list<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> deptMapper<span class=\"token punctuation\">.<\/span><span class=\"token function\">list<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">delete<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Integer<\/span> id<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        deptMapper<span class=\"token punctuation\">.<\/span><span class=\"token function\">deleteById<\/span><span class=\"token punctuation\">(<\/span>id<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Dept<\/span> dept<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        dept<span class=\"token punctuation\">.<\/span><span class=\"token function\">setCreateTime<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">LocalDateTime<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">now<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        dept<span class=\"token punctuation\">.<\/span><span class=\"token function\">setUpdateTime<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">LocalDateTime<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">now<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        deptMapper<span class=\"token punctuation\">.<\/span><span class=\"token function\">insert<\/span><span class=\"token punctuation\">(<\/span>dept<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<li>mapper \u63a5\u53e3&#xff1a;<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>example<span class=\"token punctuation\">.<\/span>demo<span class=\"token punctuation\">.<\/span>pojo<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Dept<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>apache<span class=\"token punctuation\">.<\/span>ibatis<span class=\"token punctuation\">.<\/span>annotations<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Delete<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>apache<span class=\"token punctuation\">.<\/span>ibatis<span class=\"token punctuation\">.<\/span>annotations<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Insert<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>apache<span class=\"token punctuation\">.<\/span>ibatis<span class=\"token punctuation\">.<\/span>annotations<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Mapper<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>apache<span class=\"token punctuation\">.<\/span>ibatis<span class=\"token punctuation\">.<\/span>annotations<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Select<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>util<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">List<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token annotation punctuation\">&#064;Mapper<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">interface<\/span> <span class=\"token class-name\">DeptMapper<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u67e5\u8be2\u5168\u90e8\u90e8\u95e8<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Select<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;select * from dept&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Dept<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token function\">list<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u6839\u636eID\u5220\u9664\u90e8\u95e8<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Delete<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;delete from dept where id &#061; #{id}&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">void<\/span> <span class=\"token function\">deleteById<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Integer<\/span> id<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u65b0\u589e\u90e8\u95e8<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Insert<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;insert into dept(name, create_time, update_time) values(#{name},#{createTime},#{updateTime})&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">void<\/span> <span class=\"token function\">insert<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Dept<\/span> dept<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<\/ul>\n<p>\u76ee\u524d&#xff0c;\u90e8\u95e8\u7684\u5220\u9664\u64cd\u4f5c\u53ea\u662f\u5220\u9664\u4e86\u90e8\u95e8&#xff0c;\u7136\u800c\u5728\u5b9e\u9645\u64cd\u4f5c\u4e2d&#xff0c;\u90e8\u95e8\u89e3\u6563\u540e\u76f8\u5e94\u7684\u90e8\u95e8\u5458\u5de5\u7684\u90e8\u95e8\u7f16\u53f7\u4e5f\u5e94\u8be5\u8fdb\u884c\u66f4\u6539&#xff0c;\u4e3a\u4e86\u65b9\u4fbf&#xff0c;\u540e\u9762\u6f14\u793a\u4e3a\u90e8\u95e8\u5220\u9664\u540e\u5bf9\u5e94\u7684\u90e8\u95e8\u5458\u5de5\u4e5f\u5220\u9664\u3002<\/p>\n<p>\u6240\u4ee5\u9700\u8981\u5c06\u90e8\u95e8\u7684 service \u5b9e\u73b0\u7c7b\u6539\u4e3a\u4ee5\u4e0b&#xff1a;<\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>example<span class=\"token punctuation\">.<\/span>demo<span class=\"token punctuation\">.<\/span>mapper<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">DeptMapper<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>example<span class=\"token punctuation\">.<\/span>demo<span class=\"token punctuation\">.<\/span>mapper<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">EmpMapper<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>example<span class=\"token punctuation\">.<\/span>demo<span class=\"token punctuation\">.<\/span>pojo<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Dept<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>example<span class=\"token punctuation\">.<\/span>demo<span class=\"token punctuation\">.<\/span>service<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">DeptService<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>springframework<span class=\"token punctuation\">.<\/span>beans<span class=\"token punctuation\">.<\/span>factory<span class=\"token punctuation\">.<\/span>annotation<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Autowired<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>springframework<span class=\"token punctuation\">.<\/span>stereotype<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Service<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>springframework<span class=\"token punctuation\">.<\/span>transaction<span class=\"token punctuation\">.<\/span>annotation<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Transactional<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>time<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">LocalDateTime<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>util<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">List<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token annotation punctuation\">&#064;Service<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">DeptServiceImpl<\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">DeptService<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Autowired<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">DeptMapper<\/span> deptMapper<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Autowired<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">EmpMapper<\/span> empMapper<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">deleteById<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Integer<\/span> id<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ 1. \u5220\u9664\u90e8\u95e8<\/span><br \/>\n        deptMapper<span class=\"token punctuation\">.<\/span><span class=\"token function\">deleteById<\/span><span class=\"token punctuation\">(<\/span>id<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ 2. \u5220\u9664\u90e8\u95e8\u4e0b\u7684\u5458\u5de5<\/span><br \/>\n        empMapper<span class=\"token punctuation\">.<\/span><span class=\"token function\">deleteByDeptId<\/span><span class=\"token punctuation\">(<\/span>id<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ &#8230;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u5728 EmpMapper \u4e2d\u6dfb\u52a0\u63a5\u53e3\u65b9\u6cd5&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ \u6839\u636e\u90e8\u95e8id\u5220\u9664\u5458\u5de5<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;Delete<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;delete from emp where dept_id&#061;#{deptId}&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">deleteByDeptId<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Integer<\/span> deptId<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u76ee\u524d\u4ee3\u7801\u5b58\u5728\u4e00\u4e2a\u95ee\u9898&#xff0c;\u5982\u679c\u8bf4\u5728\u5b9e\u73b0\u7c7b\u8c03\u7528\u7684\u4e24\u4e2a\u65b9\u6cd5\u4e4b\u95f4\u6dfb\u52a0\u4e00\u4e2a\u5f02\u5e38&#xff1a;<\/p>\n<p><span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">deleteById<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Integer<\/span> id<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token comment\">\/\/ 1. \u5220\u9664\u90e8\u95e8<\/span><br \/>\n  deptMapper<span class=\"token punctuation\">.<\/span><span class=\"token function\">deleteById<\/span><span class=\"token punctuation\">(<\/span>id<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1<\/span> <span class=\"token operator\">\/<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/ \u6dfb\u52a0\u5f02\u5e38<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ 2. \u5220\u9664\u90e8\u95e8\u4e0b\u7684\u5458\u5de5<\/span><br \/>\n  empMapper<span class=\"token punctuation\">.<\/span><span class=\"token function\">deleteByDeptId<\/span><span class=\"token punctuation\">(<\/span>id<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u5373\u662f\u7a0b\u5e8f\u629b\u51fa\u5f02\u5e38&#xff0c;\u90e8\u95e8\u4f9d\u7136\u5220\u9664\u4e86&#xff0c;\u90e8\u95e8\u88ab\u5220\u9664\u4f46\u76f8\u5e94\u7684\u90e8\u95e8\u5458\u5de5\u672a\u88ab\u5220\u9664&#xff0c;\u5bfc\u81f4\u6570\u636e\u4e0d\u4e00\u81f4&#xff0c;\u8fd9\u662f\u56e0\u4e3a\u5f02\u5e38\u5bfc\u81f4\u540e\u7eed\u5220\u9664\u5458\u5de5\u7684\u4ee3\u7801\u672a\u6267\u884c&#xff0c;\u9700\u5c06\u4e24\u6b65\u64cd\u4f5c\u7f6e\u4e8e\u540c\u4e00\u4e8b\u52a1\u4e2d\u624d\u80fd\u4fdd\u8bc1\u4e8b\u52a1\u7684\u4e00\u81f4\u6027\u3002<\/p>\n<p>Spring \u4e2d\u63d0\u4f9b\u4e86 &#064;Transactional \u6ce8\u89e3\u6765\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898&#xff1a;<\/p>\n<ul>\n<li>\u6ce8\u89e3&#xff1a;&#064;Transactional<\/li>\n<li>\u4f4d\u7f6e&#xff1a;service \u5c42\u7684\u65b9\u6cd5\u4e0a\u3001\u7c7b\u4e0a\u3001\u63a5\u53e3\u4e0a<\/li>\n<li>\u4f5c\u7528&#xff1a;\u5c06\u5f53\u524d\u65b9\u6cd5\u4ea4\u7ed9 Spring \u8fdb\u884c\u4e8b\u52a1\u7ba1\u7406&#xff0c;\u65b9\u6cd5\u6267\u884c\u524d&#xff0c;\u5f00\u542f\u4e8b\u52a1&#xff1b;\u6210\u529f\u6267\u884c\u5b8c\u6bd5&#xff0c;\u63d0\u4ea4\u4e8b\u52a1&#xff1b;\u51fa\u73b0\u5f02\u5e38\u56de\u6eda\u4e8b\u52a1<\/li>\n<li>\u901a\u5e38\u52a0\u5728\u4e1a\u52a1\u5c42\u6267\u884c\u591a\u6b21\u6570\u636e\u8bbf\u95ee\u64cd\u4f5c\u7684\u589e\u5220\u6539\u65b9\u6cd5\u4e0a<\/li>\n<\/ul>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>example<span class=\"token punctuation\">.<\/span>demo<span class=\"token punctuation\">.<\/span>mapper<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">DeptMapper<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>example<span class=\"token punctuation\">.<\/span>demo<span class=\"token punctuation\">.<\/span>mapper<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">EmpMapper<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>example<span class=\"token punctuation\">.<\/span>demo<span class=\"token punctuation\">.<\/span>pojo<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Dept<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>example<span class=\"token punctuation\">.<\/span>demo<span class=\"token punctuation\">.<\/span>service<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">DeptService<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>springframework<span class=\"token punctuation\">.<\/span>beans<span class=\"token punctuation\">.<\/span>factory<span class=\"token punctuation\">.<\/span>annotation<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Autowired<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>springframework<span class=\"token punctuation\">.<\/span>stereotype<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Service<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>springframework<span class=\"token punctuation\">.<\/span>transaction<span class=\"token punctuation\">.<\/span>annotation<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Transactional<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>time<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">LocalDateTime<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>util<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">List<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token annotation punctuation\">&#064;Service<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">DeptServiceImpl<\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">DeptService<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Autowired<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">DeptMapper<\/span> deptMapper<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Autowired<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">EmpMapper<\/span> empMapper<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Transactional<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">deleteById<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Integer<\/span> id<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ 1. \u5220\u9664\u90e8\u95e8<\/span><br \/>\n        deptMapper<span class=\"token punctuation\">.<\/span><span class=\"token function\">deleteById<\/span><span class=\"token punctuation\">(<\/span>id<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1<\/span><span class=\"token operator\">\/<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ 2. \u5220\u9664\u90e8\u95e8\u4e0b\u7684\u5458\u5de5<\/span><br \/>\n        empMapper<span class=\"token punctuation\">.<\/span><span class=\"token function\">deleteByDeptId<\/span><span class=\"token punctuation\">(<\/span>id<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ &#8230;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u8fd9\u6837\u5c31\u80fd\u4fdd\u8bc1\u4e8b\u52a1\u7684\u4e00\u81f4\u6027&#xff0c;\u4e00\u8d77\u63d0\u4ea4\u6216\u8005\u4e00\u8d77\u56de\u6eda\u3002<\/p>\n<p>\u53ef\u4ee5\u914d\u7f6e Spring \u4e8b\u52a1\u7ba1\u7406\u7684\u65e5\u5fd7\u5f00\u5173&#xff0c;\u65b9\u4fbf\u5728\u63a7\u5236\u53f0\u4e2d\u67e5\u770b\u65e5\u5fd7&#xff1a;<\/p>\n<p>application.properties&#xff1a;<\/p>\n<p>logging.level.org.springframework.jdbc.support.JdbcTransactionManager&#061;DEBUG<\/p>\n<p>application.yml&#xff1a;<\/p>\n<p><span class=\"token key atrule\">logging<\/span><span class=\"token punctuation\">:<\/span><br \/>\n<span class=\"token key atrule\">level<\/span><span class=\"token punctuation\">:<\/span><br \/>\n<span class=\"token key atrule\">org.springframework.jdbc.support.JdbcTransactionManager<\/span><span class=\"token punctuation\">:<\/span> DEBUG<\/p>\n<h3>Spring \u4e8b\u52a1\u7ba1\u7406\u8fdb\u9636<\/h3>\n<p>&#064;Transactional \u6ce8\u89e3\u7684\u4e24\u4e2a\u5e38\u89c1\u5c5e\u6027&#xff1a;<\/p>\n<ul>\n<li>rollbackFor&#xff08;\u5f02\u5e38\u56de\u6eda\u5c5e\u6027&#xff09;<\/li>\n<li>propagation&#xff08;\u4e8b\u52a1\u4f20\u64ad\u884c\u4e3a&#xff09;<\/li>\n<\/ul>\n<h4>rollbackFor<\/h4>\n<p>\u5c06\u5b9e\u73b0\u7c7b\u7684\u65b9\u6cd5\u6539\u4e3a&#xff1a;<\/p>\n<p><span class=\"token annotation punctuation\">&#064;Transactional<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">deleteById<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Integer<\/span> id<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throw<\/span> <span class=\"token class-name\">Exception<\/span><span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token comment\">\/\/ 1. \u5220\u9664\u90e8\u95e8<\/span><br \/>\n  deptMapper<span class=\"token punctuation\">.<\/span><span class=\"token function\">deleteById<\/span><span class=\"token punctuation\">(<\/span>id<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u6dfb\u52a0\u5f02\u5e38<\/span><br \/>\n  <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span><span class=\"token boolean\">true<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">throw<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Exception<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u7a0b\u5e8f\u51fa\u9519\u4e86&#xff01;&#xff01;&#xff01;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ 2. \u5220\u9664\u90e8\u95e8\u4e0b\u7684\u5458\u5de5<\/span><br \/>\n  empMapper<span class=\"token punctuation\">.<\/span><span class=\"token function\">deleteByDeptId<\/span><span class=\"token punctuation\">(<\/span>id<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u5982\u679c\u4ee3\u7801\u4e2d\u6dfb\u52a0\u7684\u662f\u8fd9\u79cd\u5f02\u5e38&#xff0c;\u5373\u4f7f\u6dfb\u52a0\u4e86 &#064;Transactional&#xff0c;\u4e5f\u8fd8\u662f\u4f1a\u51fa\u73b0\u7a0b\u5e8f\u629b\u51fa\u5f02\u5e38&#xff0c;\u90e8\u95e8\u4f9d\u7136\u5220\u9664\u4e86&#xff0c;\u90e8\u95e8\u88ab\u5220\u9664\u4f46\u76f8\u5e94\u7684\u90e8\u95e8\u5458\u5de5\u672a\u88ab\u5220\u9664&#xff0c;\u5bfc\u81f4\u6570\u636e\u4e0d\u4e00\u81f4\u7684\u60c5\u51b5\u3002<\/p>\n<p>\u8fd9\u662f\u56e0\u4e3a &#064;Transactional \u9ed8\u8ba4\u60c5\u51b5\u4e0b&#xff0c;\u53ea\u6709\u51fa\u73b0 RuntimeException&#xff08;\u8fd0\u884c\u65f6\u5f02\u5e38&#xff09;\u624d\u4f1a\u56de\u6eda&#xff0c;\u4e4b\u524d\u6a21\u62df\u7684 1\u00f70 \u4ea7\u751f\u7684\u7b97\u672f\u8fd0\u7b97\u5f02\u5e38\u5c5e\u4e8e\u8fd0\u884c\u65f6\u5f02\u5e38&#xff0c;\u6240\u4ee5\u80fd\u6b63\u5e38\u56de\u6eda&#xff0c;\u800c\u76f4\u63a5\u629b\u51fa\u7684 Exception \u5f02\u5e38\u4e0d\u662f\u8fd0\u884c\u65f6\u5f02\u5e38&#xff0c;\u4e0d\u4f1a\u56de\u6eda\u3002<\/p>\n<p>rollbackFor \u5c5e\u6027\u7528\u4e8e\u63a7\u5236\u51fa\u73b0\u4f55\u79cd\u5f02\u5e38\u7c7b\u578b\u65f6\u56de\u6eda\u4e8b\u52a1&#xff0c;\u914d\u7f6e\u4e3a rollbackFor &#061; Exception.class \u65f6&#xff0c;\u4ee3\u8868\u51fa\u73b0\u6240\u6709\u5f02\u5e38\u90fd\u4f1a\u8fdb\u884c\u4e8b\u52a1\u56de\u6eda\u3002<\/p>\n<p><span class=\"token annotation punctuation\">&#064;Transactional<\/span><span class=\"token punctuation\">(<\/span>rollbackFor <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">Exception<\/span><span class=\"token punctuation\">.<\/span><span class=\"token keyword\">class<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">deleteById<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Integer<\/span> id<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throw<\/span> <span class=\"token class-name\">Exception<\/span><span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token comment\">\/\/ 1. \u5220\u9664\u90e8\u95e8<\/span><br \/>\n  deptMapper<span class=\"token punctuation\">.<\/span><span class=\"token function\">deleteById<\/span><span class=\"token punctuation\">(<\/span>id<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u6dfb\u52a0\u5f02\u5e38<\/span><br \/>\n  <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span><span class=\"token boolean\">true<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">throw<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Exception<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u7a0b\u5e8f\u51fa\u9519\u4e86&#xff01;&#xff01;&#xff01;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ 2. \u5220\u9664\u90e8\u95e8\u4e0b\u7684\u5458\u5de5<\/span><br \/>\n  empMapper<span class=\"token punctuation\">.<\/span><span class=\"token function\">deleteByDeptId<\/span><span class=\"token punctuation\">(<\/span>id<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u5982\u6b64\u4e00\u6765&#xff0c;\u4e0d\u8bba\u662f\u4f55\u79cd\u5f02\u5e38&#xff0c;\u90fd\u4f1a\u8fdb\u884c\u4e8b\u52a1\u56de\u6eda&#xff0c;\u4fdd\u8bc1\u4e86\u4e8b\u52a1\u7684\u4e00\u81f4\u6027<\/p>\n<h4>propagation<\/h4>\n<p>\u4e8b\u52a1\u4f20\u64ad\u884c\u4e3a\u6307\u5f53\u4e00\u4e2a\u4e8b\u52a1\u65b9\u6cd5\u88ab\u53e6\u4e00\u4e2a\u4e8b\u52a1\u65b9\u6cd5\u8c03\u7528\u65f6&#xff0c;\u8be5\u4e8b\u52a1\u65b9\u6cd5\u5982\u4f55\u8fdb\u884c\u4e8b\u52a1\u63a7\u5236\u3002\u4f8b\u5982 a \u65b9\u6cd5&#xff08;\u5e26\u4e8b\u52a1&#xff09;\u8c03\u7528 b \u65b9\u6cd5&#xff08;\u5e26\u4e8b\u52a1&#xff09;\u65f6&#xff0c;b \u662f\u52a0\u5165 a \u7684\u4e8b\u52a1\u8fd8\u662f\u65b0\u5efa\u4e8b\u52a1&#xff0c;\u7531\u4f20\u64ad\u884c\u4e3a\u51b3\u5b9a\u3002<\/p>\n<p>\u4e8b\u52a1\u4f20\u64ad\u884c\u4e3a&#xff1a;<\/p>\n<table>\n<tr>\u5c5e\u6027\u503c\u542b\u4e49<\/tr>\n<tbody>\n<tr>\n<td>REQUIRED<\/td>\n<td>&#xff08;\u9ed8\u8ba4\u503c&#xff09;\u9700\u8981\u4e8b\u52a1&#xff0c;\u6709\u5219\u52a0\u5165&#xff0c;\u65e0\u5219\u521b\u5efa\u65b0\u4e8b\u52a1<\/td>\n<\/tr>\n<tr>\n<td>REQUIRES_NEW<\/td>\n<td>\u9700\u8981\u65b0\u4e8b\u52a1&#xff0c;\u65e0\u8bba\u6709\u65e0&#xff0c;\u603b\u662f\u521b\u5efa\u65b0\u4e8b\u52a1<\/td>\n<\/tr>\n<tr>\n<td>SUPPORTS<\/td>\n<td>\u652f\u6301\u4e8b\u52a1&#xff0c;\u6709\u5219\u52a0\u5165&#xff0c;\u65e0\u5219\u5728\u65e0\u4e8b\u52a1\u72b6\u6001\u4e2d\u8fd0\u884c<\/td>\n<\/tr>\n<tr>\n<td>NOT_SUPPORTED<\/td>\n<td>\u4e0d\u652f\u6301\u4e8b\u52a1&#xff0c;\u5728\u65e0\u4e8b\u52a1\u72b6\u6001\u4e0b\u8fd0\u884c&#xff0c;\u5982\u679c\u5f53\u524d\u5b58\u5728\u5df2\u6709\u4e8b\u52a1&#xff0c;\u5219\u6302\u8d77\u5f53\u524d\u4e8b\u52a1<\/td>\n<\/tr>\n<tr>\n<td>MANDATORY<\/td>\n<td>\u5fc5\u987b\u6709\u4e8b\u52a1&#xff0c;\u5426\u5219\u629b\u51fa\u5f02\u5e38<\/td>\n<\/tr>\n<tr>\n<td>NEVER<\/td>\n<td>\u5fc5\u987b\u65e0\u4e8b\u52a1&#xff0c;\u5426\u5219\u629b\u51fa\u5f02\u5e38<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u5f80\u6570\u636e\u5e93\u4e2d\u65b0\u589e\u4e00\u4e2a\u90e8\u95e8\u64cd\u4f5c\u65e5\u5fd7\u8868&#xff1a;<\/p>\n<p><span class=\"token keyword\">create<\/span> <span class=\"token keyword\">table<\/span> dept_log<span class=\"token punctuation\">(<\/span><br \/>\n    id <span class=\"token keyword\">int<\/span> <span class=\"token keyword\">unsigned<\/span> <span class=\"token keyword\">primary<\/span> <span class=\"token keyword\">key<\/span> <span class=\"token keyword\">auto_increment<\/span> <span class=\"token keyword\">comment<\/span> <span class=\"token string\">&#039;\u4e3b\u952eID&#039;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    create_time <span class=\"token keyword\">datetime<\/span> <span class=\"token operator\">not<\/span> <span class=\"token boolean\">null<\/span> <span class=\"token keyword\">comment<\/span> <span class=\"token string\">&#039;\u521b\u5efa\u65f6\u95f4&#039;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    description <span class=\"token keyword\">varchar<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">300<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">not<\/span> <span class=\"token boolean\">null<\/span> <span class=\"token keyword\">comment<\/span> <span class=\"token string\">&#039;\u64cd\u4f5c\u63cf\u8ff0&#039;<\/span><br \/>\n<span class=\"token punctuation\">)<\/span><span class=\"token string\">&#039;\u90e8\u95e8\u64cd\u4f5c\u65e5\u5fd7\u8868&#039;<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u5b9e\u4f53\u7c7b\u4e3a&#xff1a;<\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">lombok<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">AllArgsConstructor<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">lombok<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Data<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">lombok<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">NoArgsConstructor<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>time<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">LocalDateTime<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token annotation punctuation\">&#064;Data<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;AllArgsConstructor<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;NoArgsConstructor<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">DeptLog<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">Integer<\/span> id<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">LocalDateTime<\/span> createTime<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">String<\/span> description<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>mapper \u63a5\u53e3&#xff1a;<\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>apache<span class=\"token punctuation\">.<\/span>ibatis<span class=\"token punctuation\">.<\/span>annotations<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Insert<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">interface<\/span> <span class=\"token class-name\">DeptLogMapper<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Insert<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;insert into dept_log(description, create_time) values(#{description}, #{createTime})&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">void<\/span> <span class=\"token function\">insert<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">DeptLog<\/span> deptLog<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>service \u63a5\u53e3\u4ee5\u53ca\u5b9e\u73b0\u7c7b&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ service\u63a5\u53e3<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>example<span class=\"token punctuation\">.<\/span>demo<span class=\"token punctuation\">.<\/span>pojo<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">DeptLog<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">interface<\/span> <span class=\"token class-name\">DeptLogService<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">void<\/span> <span class=\"token function\">insert<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">DeptLog<\/span> deptLog<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ service\u5b9e\u73b0\u7c7b<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>example<span class=\"token punctuation\">.<\/span>demo<span class=\"token punctuation\">.<\/span>mapper<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">DeptLogMapper<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>example<span class=\"token punctuation\">.<\/span>demo<span class=\"token punctuation\">.<\/span>pojo<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">DeptLog<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>example<span class=\"token punctuation\">.<\/span>demo<span class=\"token punctuation\">.<\/span>service<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">DeptLogService<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>springframework<span class=\"token punctuation\">.<\/span>beans<span class=\"token punctuation\">.<\/span>factory<span class=\"token punctuation\">.<\/span>annotation<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Autowired<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>springframework<span class=\"token punctuation\">.<\/span>stereotype<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Service<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token annotation punctuation\">&#064;Service<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">DeptLogServiceImpl<\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">DeptLogService<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Autowired<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">DeptLogMapper<\/span> deptLogMapper<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Transactional<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">insert<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">DeptLog<\/span> deptLog<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      deptLogMapper<span class=\"token punctuation\">.<\/span><span class=\"token function\">insert<\/span><span class=\"token punctuation\">(<\/span>deptLog<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u73b0\u5728\u8981\u6c42&#xff0c;\u4e0d\u8bba\u5220\u9664\u64cd\u4f5c\u662f\u5426\u6210\u529f&#xff0c;\u90fd\u8981\u8bb0\u5f55\u64cd\u4f5c\u65e5\u5fd7&#xff0c;\u5c06 DeptServiceImpl \u6539\u4e3a&#xff1a;<\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>example<span class=\"token punctuation\">.<\/span>demo<span class=\"token punctuation\">.<\/span>mapper<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">DeptMapper<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>example<span class=\"token punctuation\">.<\/span>demo<span class=\"token punctuation\">.<\/span>mapper<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">EmpMapper<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>example<span class=\"token punctuation\">.<\/span>demo<span class=\"token punctuation\">.<\/span>pojo<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Dept<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>example<span class=\"token punctuation\">.<\/span>demo<span class=\"token punctuation\">.<\/span>pojo<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">DeptLog<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>example<span class=\"token punctuation\">.<\/span>demo<span class=\"token punctuation\">.<\/span>service<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">DeptLogService<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>example<span class=\"token punctuation\">.<\/span>demo<span class=\"token punctuation\">.<\/span>service<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">DeptService<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>springframework<span class=\"token punctuation\">.<\/span>beans<span class=\"token punctuation\">.<\/span>factory<span class=\"token punctuation\">.<\/span>annotation<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Autowired<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>springframework<span class=\"token punctuation\">.<\/span>stereotype<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Service<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>springframework<span class=\"token punctuation\">.<\/span>transaction<span class=\"token punctuation\">.<\/span>annotation<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Transactional<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>time<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">LocalDateTime<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>util<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">List<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token annotation punctuation\">&#064;Service<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">DeptServiceImpl<\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">DeptService<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Autowired<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">DeptMapper<\/span> deptMapper<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Autowired<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">EmpMapper<\/span> empMapper<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Autowired<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">DeptLogService<\/span> deptLogService<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Transactional<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">deleteById<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Integer<\/span> id<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">try<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token comment\">\/\/ 1. \u5220\u9664\u90e8\u95e8<\/span><br \/>\n            deptMapper<span class=\"token punctuation\">.<\/span><span class=\"token function\">deleteById<\/span><span class=\"token punctuation\">(<\/span>id<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>            <span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1<\/span><span class=\"token operator\">\/<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>            <span class=\"token comment\">\/\/ 2. \u5220\u9664\u90e8\u95e8\u4e0b\u7684\u5458\u5de5<\/span><br \/>\n            empMapper<span class=\"token punctuation\">.<\/span><span class=\"token function\">deleteByDeptId<\/span><span class=\"token punctuation\">(<\/span>id<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span>  <span class=\"token keyword\">finally<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token comment\">\/\/ 3. \u5220\u9664\u90e8\u95e8\u65e5\u5fd7<\/span><br \/>\n            <span class=\"token class-name\">DeptLog<\/span> deptLog <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">DeptLog<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            deptLog<span class=\"token punctuation\">.<\/span><span class=\"token function\">setCreateTime<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">LocalDateTime<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">now<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            deptLog<span class=\"token punctuation\">.<\/span><span class=\"token function\">setDescription<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u5220\u9664\u4e86\u90e8\u95e8id\u4e3a&#034;<\/span> <span class=\"token operator\">&#043;<\/span> id <span class=\"token operator\">&#043;<\/span> <span class=\"token string\">&#034;\u7684\u90e8\u95e8&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            deptLogService<span class=\"token punctuation\">.<\/span><span class=\"token function\">insert<\/span><span class=\"token punctuation\">(<\/span>deptLog<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n  <span class=\"token comment\">\/\/ &#8230;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>deleteById \u65b9\u6cd5&#xff08;\u5e26\u4e8b\u52a1&#xff09;\u8c03\u7528 insert \u65b9\u6cd5&#xff08;\u5e26\u4e8b\u52a1&#xff09;\u65f6&#xff0c;insert \u4f1a\u52a0\u5165 delete \u7684\u4e8b\u52a1\u3002\u82e5 delete \u6267\u884c\u4e2d\u51fa\u73b0\u5f02\u5e38&#xff0c;\u6574\u4e2a\u4e8b\u52a1\u56de\u6eda&#xff0c;\u5bfc\u81f4\u65e5\u5fd7\u8bb0\u5f55\u4e5f\u56de\u6eda&#xff0c;\u65e0\u6cd5\u6ee1\u8db3\u9700\u6c42\u3002<\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>example<span class=\"token punctuation\">.<\/span>demo<span class=\"token punctuation\">.<\/span>mapper<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">DeptLogMapper<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>example<span class=\"token punctuation\">.<\/span>demo<span class=\"token punctuation\">.<\/span>pojo<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">DeptLog<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>example<span class=\"token punctuation\">.<\/span>demo<span class=\"token punctuation\">.<\/span>service<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">DeptLogService<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>springframework<span class=\"token punctuation\">.<\/span>beans<span class=\"token punctuation\">.<\/span>factory<span class=\"token punctuation\">.<\/span>annotation<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Autowired<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>springframework<span class=\"token punctuation\">.<\/span>stereotype<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Service<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>springframework<span class=\"token punctuation\">.<\/span>transaction<span class=\"token punctuation\">.<\/span>annotation<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Propagation<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>springframework<span class=\"token punctuation\">.<\/span>transaction<span class=\"token punctuation\">.<\/span>annotation<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Transactional<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token annotation punctuation\">&#064;Service<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">DeptLogServiceImpl<\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">DeptLogService<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Autowired<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">DeptLogMapper<\/span> deptLogMapper<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Transactional<\/span><span class=\"token punctuation\">(<\/span>propagation <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">Propagation<\/span><span class=\"token punctuation\">.<\/span><span class=\"token constant\">REQUIRES_NEW<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">insert<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">DeptLog<\/span> deptLog<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        deptLogMapper<span class=\"token punctuation\">.<\/span><span class=\"token function\">insert<\/span><span class=\"token punctuation\">(<\/span>deptLog<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u5c06 insert \u65b9\u6cd5\u7684\u4f20\u64ad\u884c\u4e3a\u8bbe\u4e3a REQUIRES_NEW \u540e&#xff0c;\u8c03\u7528 insert \u65f6\u4f1a\u6302\u8d77\u5f53\u524d\u4e8b\u52a1\u5e76\u65b0\u5efa\u4e8b\u52a1\u3002insert \u6267\u884c\u5b8c\u6bd5\u540e\u63d0\u4ea4&#xff0c;\u4e0d\u53d7 delete \u4e8b\u52a1\u56de\u6eda\u5f71\u54cd&#xff0c;\u5373\u4f7f delete \u5f02\u5e38&#xff0c;\u65e5\u5fd7\u4e5f\u80fd\u6210\u529f\u8bb0\u5f55\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb275\u6b21\u3002Spring\u4e8b\u52a1\u7ba1\u7406\u6458\u8981 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