{"id":119622,"date":"2026-10-30T01:32:53","date_gmt":"2026-10-29T17:32:53","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/119622.html"},"modified":"2026-10-30T01:32:53","modified_gmt":"2026-10-29T17:32:53","slug":"java-record%e4%bd%bf%e7%94%a8%e6%8c%87%e5%8d%97","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/119622.html","title":{"rendered":"Java Record\u4f7f\u7528\u6307\u5357"},"content":{"rendered":"<\/p>\n<h4>Java Record\u4f7f\u7528\u6307\u5357<\/h4>\n<ul>\n<li>Java Record \u4f7f\u7528\u6307\u5357<\/li>\n<li>\n<ul>\n<li>\u4e00\u3001Record \u7684\u6838\u5fc3\u4f18\u52bf<\/li>\n<li>\n<ul>\n<li>1. \u4ee3\u7801\u7b80\u6d01\u6027<\/li>\n<li>2. \u4e0d\u53ef\u53d8\u6027\u4fdd\u8bc1<\/li>\n<li>3. \u81ea\u52a8\u751f\u6210\u6837\u677f\u4ee3\u7801<\/li>\n<li>4. \u4e0e\u5bc6\u5c01\u63a5\u53e3\u5b8c\u7f8e\u914d\u5408<\/li>\n<\/ul>\n<\/li>\n<li>\u4e8c\u3001\u4ec0\u4e48\u65f6\u5019\u4f7f\u7528 Record<\/li>\n<li>\n<ul>\n<li>\u2705 \u9002\u5408\u573a\u666f<\/li>\n<li>\n<ul>\n<li>1. DTO&#xff08;\u6570\u636e\u4f20\u8f93\u5bf9\u8c61&#xff09;<\/li>\n<li>2. VO&#xff08;\u503c\u5bf9\u8c61&#xff09;<\/li>\n<li>3. \u914d\u7f6e\u5bf9\u8c61<\/li>\n<li>4. \u96c6\u5408\u64cd\u4f5c\u7684\u8fd4\u56de\u503c<\/li>\n<li>5. JSON-RPC \u6d88\u606f<\/li>\n<li>6. \u4e8b\u4ef6\u5bf9\u8c61<\/li>\n<li>7. \u6570\u636e\u5e93\u67e5\u8be2\u7ed3\u679c<\/li>\n<\/ul>\n<\/li>\n<li>\u274c \u4e0d\u9002\u5408\u573a\u666f<\/li>\n<li>\n<ul>\n<li>1. \u9700\u8981\u53ef\u53d8\u72b6\u6001\u7684\u5b9e\u4f53<\/li>\n<li>2. \u9700\u8981\u7ee7\u627f\u7684\u573a\u666f<\/li>\n<li>3. \u9700\u8981\u5ef6\u8fdf\u521d\u59cb\u5316\u6216\u590d\u6742\u6784\u9020\u903b\u8f91<\/li>\n<li>4. \u9700\u8981 setter \u65b9\u6cd5<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>\u4e09\u3001Record \u7684\u9ad8\u7ea7\u7528\u6cd5<\/li>\n<li>\n<ul>\n<li>1. \u6dfb\u52a0\u53c2\u6570\u6821\u9a8c<\/li>\n<li>2. \u6dfb\u52a0\u81ea\u5b9a\u4e49\u65b9\u6cd5<\/li>\n<li>3. \u6dfb\u52a0\u9759\u6001\u5de5\u5382\u65b9\u6cd5<\/li>\n<li>4. \u5b9e\u73b0\u63a5\u53e3<\/li>\n<li>5. \u5d4c\u5957 Record<\/li>\n<\/ul>\n<\/li>\n<li>\u56db\u3001Record \u4e0e Lombok \u5bf9\u6bd4<\/li>\n<li>\n<ul>\n<li>\u5efa\u8bae<\/li>\n<\/ul>\n<\/li>\n<li>\u4e94\u3001\u6700\u4f73\u5b9e\u8df5<\/li>\n<li>\n<ul>\n<li>\u2705 \u63a8\u8350<\/li>\n<li>\u274c \u907f\u514d<\/li>\n<\/ul>\n<\/li>\n<li>\u516d\u3001\u603b\u7ed3<\/li>\n<li>\n<ul>\n<li>\u4f7f\u7528 Record \u7684\u65f6\u673a<\/li>\n<li>\u4e0d\u4f7f\u7528 Record \u7684\u65f6\u673a<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>Java Record \u4f7f\u7528\u6307\u5357<\/h2>\n<h3>\u4e00\u3001Record \u7684\u6838\u5fc3\u4f18\u52bf<\/h3>\n<h4>1. \u4ee3\u7801\u7b80\u6d01\u6027<\/h4>\n<p><span class=\"token comment\">\/\/ \u4f20\u7edf class&#xff1a;50&#043; \u884c<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">User<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">final<\/span> <span class=\"token class-name\">String<\/span> name<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">final<\/span> <span class=\"token keyword\">int<\/span> age<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/ &#043; \u6784\u9020\u51fd\u6570 &#043; getter &#043; equals &#043; hashCode &#043; toString<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ Record&#xff1a;1 \u884c<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">record<\/span> <span class=\"token class-name\">User<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> name<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> age<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><\/p>\n<h4>2. \u4e0d\u53ef\u53d8\u6027\u4fdd\u8bc1<\/h4>\n<ul>\n<li>\u6240\u6709\u5b57\u6bb5\u81ea\u52a8\u58f0\u660e\u4e3a private final<\/li>\n<li>\u521b\u5efa\u540e\u65e0\u6cd5\u4fee\u6539&#xff0c;\u5929\u7136\u7ebf\u7a0b\u5b89\u5168<\/li>\n<li>\u9002\u5408\u5e76\u53d1\u7f16\u7a0b\u573a\u666f<\/li>\n<\/ul>\n<h4>3. \u81ea\u52a8\u751f\u6210\u6837\u677f\u4ee3\u7801<\/h4>\n<ul>\n<li>\u79c1\u6709 final \u5b57\u6bb5<\/li>\n<li>\u5168\u53c2\u6784\u9020\u51fd\u6570<\/li>\n<li>\u8bbf\u95ee\u5668\u65b9\u6cd5&#xff08;name() \u800c\u975e getName()&#xff09;<\/li>\n<li>equals()\u3001hashCode()\u3001toString()<\/li>\n<\/ul>\n<h4>4. \u4e0e\u5bc6\u5c01\u63a5\u53e3\u5b8c\u7f8e\u914d\u5408<\/h4>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">sealed<\/span> <span class=\"token keyword\">interface<\/span> <span class=\"token class-name\">Message<\/span> <span class=\"token keyword\">permits<\/span> <span class=\"token class-name\">Request<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Response<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">record<\/span> <span class=\"token class-name\">Request<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> method<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Object<\/span> params<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">Message<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">record<\/span> <span class=\"token class-name\">Response<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Object<\/span> result<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">Message<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><\/p>\n<h3>\u4e8c\u3001\u4ec0\u4e48\u65f6\u5019\u4f7f\u7528 Record<\/h3>\n<h4>\u2705 \u9002\u5408\u573a\u666f<\/h4>\n<h5>1. DTO&#xff08;\u6570\u636e\u4f20\u8f93\u5bf9\u8c61&#xff09;<\/h5>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">record<\/span> <span class=\"token class-name\">UserDTO<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> name<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">String<\/span> email<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Integer<\/span> age<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><\/p>\n<h5>2. VO&#xff08;\u503c\u5bf9\u8c61&#xff09;<\/h5>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">record<\/span> <span class=\"token class-name\">Money<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">BigDecimal<\/span> amount<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">String<\/span> currency<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">record<\/span> <span class=\"token class-name\">DateRange<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">LocalDate<\/span> start<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">LocalDate<\/span> end<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><\/p>\n<h5>3. \u914d\u7f6e\u5bf9\u8c61<\/h5>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">record<\/span> <span class=\"token class-name\">DatabaseConfig<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> url<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">String<\/span> username<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">String<\/span> password<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><\/p>\n<h5>4. \u96c6\u5408\u64cd\u4f5c\u7684\u8fd4\u56de\u503c<\/h5>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">record<\/span> <span class=\"token class-name\">PageResult<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">T<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">T<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> data<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">long<\/span> total<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> page<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u4f7f\u7528<\/span><br \/>\n<span class=\"token class-name\">PageResult<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">User<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> result <span class=\"token operator\">&#061;<\/span> userService<span class=\"token punctuation\">.<\/span><span class=\"token function\">getPage<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u603b\u6570&#xff1a;&#034;<\/span> <span class=\"token operator\">&#043;<\/span> result<span class=\"token punctuation\">.<\/span><span class=\"token function\">total<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h5>5. JSON-RPC \u6d88\u606f<\/h5>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">record<\/span> <span class=\"token class-name\">JSONRPCRequest<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> jsonrpc<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">String<\/span> method<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Object<\/span> id<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Object<\/span> params<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">record<\/span> <span class=\"token class-name\">JSONRPCResponse<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> jsonrpc<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Object<\/span> id<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Object<\/span> result<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">JSONRPCError<\/span> error<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><\/p>\n<h5>6. \u4e8b\u4ef6\u5bf9\u8c61<\/h5>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">record<\/span> <span class=\"token class-name\">UserCreatedEvent<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> userId<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">String<\/span> email<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Instant<\/span> timestamp<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><\/p>\n<h5>7. \u6570\u636e\u5e93\u67e5\u8be2\u7ed3\u679c<\/h5>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">record<\/span> <span class=\"token class-name\">UserSummary<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> name<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">long<\/span> orderCount<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">BigDecimal<\/span> totalAmount<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><\/p>\n<h4>\u274c \u4e0d\u9002\u5408\u573a\u666f<\/h4>\n<h5>1. \u9700\u8981\u53ef\u53d8\u72b6\u6001\u7684\u5b9e\u4f53<\/h5>\n<p><span class=\"token comment\">\/\/ \u274c \u4e0d\u9002\u5408&#xff1a;\u5b9e\u4f53\u9700\u8981\u4fee\u6539\u72b6\u6001<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">record<\/span> <span class=\"token class-name\">UserEntity<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> name<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> age<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token class-name\">UserEntity<\/span> user <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">UserEntity<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u5f20\u4e09&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">25<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/ user.setName(&#034;\u674e\u56db&#034;); \/\/ \u7f16\u8bd1\u9519\u8bef&#xff01;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u2705 \u5e94\u8be5\u4f7f\u7528\u4f20\u7edf class \u6216 Lombok<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;Data<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">UserEntity<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">String<\/span> name<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">int<\/span> age<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h5>2. \u9700\u8981\u7ee7\u627f\u7684\u573a\u666f<\/h5>\n<p><span class=\"token comment\">\/\/ \u274c Record \u4e0d\u80fd\u7ee7\u627f\u5176\u4ed6\u7c7b<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">record<\/span> <span class=\"token class-name\">AdminUser<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> name<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">String<\/span> role<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">User<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span> <span class=\"token comment\">\/\/ \u7f16\u8bd1\u9519\u8bef&#xff01;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u2705 \u4f7f\u7528\u4f20\u7edf class<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">AdminUser<\/span> <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">User<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">String<\/span> role<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h5>3. \u9700\u8981\u5ef6\u8fdf\u521d\u59cb\u5316\u6216\u590d\u6742\u6784\u9020\u903b\u8f91<\/h5>\n<p><span class=\"token comment\">\/\/ \u274c Record \u7684\u6784\u9020\u51fd\u6570\u5fc5\u987b\u521d\u59cb\u5316\u6240\u6709\u5b57\u6bb5<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">record<\/span> <span class=\"token class-name\">ComplexObject<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">LazyField<\/span> field<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u65e0\u6cd5\u5b9e\u73b0\u5ef6\u8fdf\u521d\u59cb\u5316<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u2705 \u4f7f\u7528\u4f20\u7edf class<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">ComplexObject<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">LazyField<\/span> field<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">LazyField<\/span> <span class=\"token function\">getField<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>field <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            field <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">LazyField<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5ef6\u8fdf\u521d\u59cb\u5316<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> field<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h5>4. \u9700\u8981 setter \u65b9\u6cd5<\/h5>\n<p><span class=\"token comment\">\/\/ \u274c Record \u6ca1\u6709 setter<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">record<\/span> <span class=\"token class-name\">Config<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> value<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token class-name\">Config<\/span> config <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Config<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;old&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/ config.setValue(&#034;new&#034;); \/\/ \u7f16\u8bd1\u9519\u8bef&#xff01;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u2705 \u4f7f\u7528\u4f20\u7edf class \u6216 Lombok<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;Data<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Config<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">String<\/span> value<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h3>\u4e09\u3001Record \u7684\u9ad8\u7ea7\u7528\u6cd5<\/h3>\n<h4>1. \u6dfb\u52a0\u53c2\u6570\u6821\u9a8c<\/h4>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">record<\/span> <span class=\"token class-name\">Email<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> value<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u7d27\u51d1\u6784\u9020\u51fd\u6570<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">Email<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>value<span class=\"token punctuation\">.<\/span><span class=\"token function\">contains<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;&#064;&#034;<\/span><span class=\"token punctuation\">)<\/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\">IllegalArgumentException<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u65e0\u6548\u7684\u90ae\u7bb1\u5730\u5740&#034;<\/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><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>2. \u6dfb\u52a0\u81ea\u5b9a\u4e49\u65b9\u6cd5<\/h4>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">record<\/span> <span class=\"token class-name\">DateRange<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">LocalDate<\/span> start<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">LocalDate<\/span> end<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">boolean<\/span> <span class=\"token function\">contains<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">LocalDate<\/span> date<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token operator\">!<\/span>date<span class=\"token punctuation\">.<\/span><span class=\"token function\">isBefore<\/span><span class=\"token punctuation\">(<\/span>start<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&amp;&amp;<\/span> <span class=\"token operator\">!<\/span>date<span class=\"token punctuation\">.<\/span><span class=\"token function\">isAfter<\/span><span class=\"token punctuation\">(<\/span>end<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">long<\/span> <span class=\"token function\">days<\/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\">ChronoUnit<\/span><span class=\"token punctuation\">.<\/span><span class=\"token constant\">DAYS<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">between<\/span><span class=\"token punctuation\">(<\/span>start<span class=\"token punctuation\">,<\/span> end<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<h4>3. \u6dfb\u52a0\u9759\u6001\u5de5\u5382\u65b9\u6cd5<\/h4>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">record<\/span> <span class=\"token class-name\">Money<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">BigDecimal<\/span> amount<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">String<\/span> currency<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token class-name\">Money<\/span> <span class=\"token function\">of<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">double<\/span> amount<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">String<\/span> currency<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Money<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">BigDecimal<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">valueOf<\/span><span class=\"token punctuation\">(<\/span>amount<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> currency<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token class-name\">Money<\/span> <span class=\"token function\">CNY<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">double<\/span> amount<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token function\">of<\/span><span class=\"token punctuation\">(<\/span>amount<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;CNY&#034;<\/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><\/p>\n<p><span class=\"token comment\">\/\/ \u4f7f\u7528<\/span><br \/>\n<span class=\"token class-name\">Money<\/span> money <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">Money<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">CNY<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">100.00<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h4>4. \u5b9e\u73b0\u63a5\u53e3<\/h4>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">interface<\/span> <span class=\"token class-name\">Comparable<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">T<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> <span class=\"token function\">compareTo<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">T<\/span> o<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">record<\/span> <span class=\"token class-name\">Student<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> name<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> score<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">Comparable<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Student<\/span><span class=\"token punctuation\">&gt;<\/span><\/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\">int<\/span> <span class=\"token function\">compareTo<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Student<\/span> other<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token class-name\">Integer<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">compare<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>score<span class=\"token punctuation\">,<\/span> other<span class=\"token punctuation\">.<\/span>score<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<h4>5. \u5d4c\u5957 Record<\/h4>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">record<\/span> <span class=\"token class-name\">Order<\/span><span class=\"token punctuation\">(<\/span><br \/>\n    <span class=\"token class-name\">String<\/span> orderId<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\">OrderItem<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> items<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token class-name\">Address<\/span> shippingAddress<br \/>\n<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">record<\/span> <span class=\"token class-name\">OrderItem<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> productId<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> quantity<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">BigDecimal<\/span> price<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">record<\/span> <span class=\"token class-name\">Address<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> city<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">String<\/span> street<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">String<\/span> zipCode<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h3>\u56db\u3001Record \u4e0e Lombok \u5bf9\u6bd4<\/h3>\n<table>\n<tr>\u7279\u6027RecordLombok &#064;Value<\/tr>\n<tbody>\n<tr>\n<td>\u8bed\u8a00\u652f\u6301<\/td>\n<td>\u539f\u751f Java 16&#043;<\/td>\n<td>\u9700\u8981 Lombok \u4f9d\u8d56<\/td>\n<\/tr>\n<tr>\n<td>IDE \u652f\u6301<\/td>\n<td>\u539f\u751f\u652f\u6301<\/td>\n<td>\u9700\u8981\u5b89\u88c5\u63d2\u4ef6<\/td>\n<\/tr>\n<tr>\n<td>\u7f16\u8bd1\u901f\u5ea6<\/td>\n<td>\u66f4\u5feb<\/td>\n<td>\u7a0d\u6162&#xff08;\u6ce8\u89e3\u5904\u7406&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>\u4e0d\u53ef\u53d8\u6027<\/td>\n<td>\u2705 \u5f3a\u5236<\/td>\n<td>\u2705 \u5f3a\u5236<\/td>\n<\/tr>\n<tr>\n<td>\u53ef\u53d8\u6027\u652f\u6301<\/td>\n<td>\u274c \u4e0d\u652f\u6301<\/td>\n<td>\u26a0\ufe0f \u4e0d\u63a8\u8350<\/td>\n<\/tr>\n<tr>\n<td>\u7ee7\u627f<\/td>\n<td>\u274c \u4e0d\u80fd\u7ee7\u627f\u7c7b<\/td>\n<td>\u2705 \u53ef\u4ee5\u7ee7\u627f<\/td>\n<\/tr>\n<tr>\n<td>\u6784\u9020\u51fd\u6570<\/td>\n<td>\u53ea\u80fd\u5168\u53c2<\/td>\n<td>\u652f\u6301\u591a\u79cd<\/td>\n<\/tr>\n<tr>\n<td>Builder \u6a21\u5f0f<\/td>\n<td>\u9700\u624b\u5199<\/td>\n<td>\u2705 &#064;Builder<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4>\u5efa\u8bae<\/h4>\n<ul>\n<li>Java 16&#043; \u9879\u76ee&#xff1a;\u4f18\u5148\u4f7f\u7528 Record<\/li>\n<li>\u9700\u8981\u7075\u6d3b\u6027&#xff1a;\u4f7f\u7528 Lombok<\/li>\n<li>\u7b80\u5355\u6570\u636e\u8f7d\u4f53&#xff1a;Record<\/li>\n<li>\u590d\u6742\u4e1a\u52a1\u5bf9\u8c61&#xff1a;Lombok \u6216\u4f20\u7edf class<\/li>\n<\/ul>\n<h3>\u4e94\u3001\u6700\u4f73\u5b9e\u8df5<\/h3>\n<h4>\u2705 \u63a8\u8350<\/h4>\n<li>\n<p>\u547d\u540d\u89c4\u8303<\/p>\n<p> <span class=\"token comment\">\/\/ \u2705 \u4f7f\u7528\u540d\u8bcd\u547d\u540d<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">record<\/span> <span class=\"token class-name\">UserDTO<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">record<\/span> <span class=\"token class-name\">OrderSummary<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u274c \u907f\u514d\u52a8\u8bcd<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">record<\/span> <span class=\"token function\">getUser<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span>\n <\/li>\n<li>\n<p>\u4fdd\u6301\u7b80\u6d01<\/p>\n<p> <span class=\"token comment\">\/\/ \u2705 \u5b57\u6bb5\u5c11\u800c\u7cbe<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">record<\/span> <span class=\"token class-name\">Point<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> x<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> y<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u274c \u5b57\u6bb5\u8fc7\u591a&#xff08;\u8003\u8651\u62c6\u5206&#xff09;<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">record<\/span> <span class=\"token class-name\">User<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">long<\/span> f1<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">long<\/span> f2<span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">long<\/span> f20<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span>\n <\/li>\n<li>\n<p>\u6dfb\u52a0\u5fc5\u8981\u7684\u6821\u9a8c<\/p>\n<p> <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">record<\/span> <span class=\"token class-name\">Age<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> value<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">Age<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>value <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">0<\/span> <span class=\"token operator\">||<\/span> value <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">150<\/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\">IllegalArgumentException<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u5e74\u9f84\u4e0d\u5408\u6cd5&#034;<\/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><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<li>\n<p>\u914d\u5408\u5bc6\u5c01\u63a5\u53e3\u4f7f\u7528<\/p>\n<p> <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">sealed<\/span> <span class=\"token keyword\">interface<\/span> <span class=\"token class-name\">Result<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">T<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token keyword\">permits<\/span> <span class=\"token class-name\">Success<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Failure<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token class-name\">T<\/span> <span class=\"token function\">getOrNull<\/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 keyword\">public<\/span> <span class=\"token keyword\">record<\/span> <span class=\"token class-name\">Success<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">T<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">T<\/span> value<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">Result<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">T<\/span><span class=\"token punctuation\">&gt;<\/span><\/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 class-name\">T<\/span> <span class=\"token function\">getOrNull<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">return<\/span> value<span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">record<\/span> <span class=\"token class-name\">Failure<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">T<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> error<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">Result<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">T<\/span><span class=\"token punctuation\">&gt;<\/span><\/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 class-name\">T<\/span> <span class=\"token function\">getOrNull<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<h4>\u274c \u907f\u514d<\/h4>\n<li>\n<p>\u4e0d\u8981\u5728 Record \u4e2d\u5b58\u50a8\u5927\u91cf\u6570\u636e<\/p>\n<p> <span class=\"token comment\">\/\/ \u274c \u4e0d\u9002\u5408<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">record<\/span> <span class=\"token class-name\">LargeData<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">byte<\/span><span class=\"token punctuation\">[<\/span><span class=\"token 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<span class=\"token class-name\">Config<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> items<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token class-name\">Config<\/span> config <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Config<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ArrayList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nconfig<span class=\"token punctuation\">.<\/span><span class=\"token function\">items<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;hack&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u7834\u574f\u4e86\u4e0d\u53ef\u53d8\u6027&#xff01;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u2705 \u4f7f\u7528\u4e0d\u53ef\u53d8\u96c6\u5408<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">record<\/span> <span class=\"token class-name\">Config<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> items<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">Config<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        items <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">List<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">copyOf<\/span><span class=\"token punctuation\">(<\/span>items<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u9632\u5fa1\u6027\u62f7\u8d1d<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<h3>\u516d\u3001\u603b\u7ed3<\/h3>\n<h4>\u4f7f\u7528 Record \u7684\u65f6\u673a<\/h4>\n<p>\u2705 \u7eaf\u6570\u636e\u8f7d\u4f53&#xff08;DTO\u3001VO\u3001\u914d\u7f6e&#xff09; \u2705 \u9700\u8981\u4e0d\u53ef\u53d8\u6027 \u2705 \u4e0d\u9700\u8981\u7ee7\u627f \u2705 \u5b57\u6bb5\u6570\u91cf\u9002\u4e2d \u2705 \u914d\u5408\u5bc6\u5c01\u63a5\u53e3\u4f7f\u7528<\/p>\n<h4>\u4e0d\u4f7f\u7528 Record \u7684\u65f6\u673a<\/h4>\n<p>\u274c \u9700\u8981\u53ef\u53d8\u72b6\u6001 \u274c \u9700\u8981\u7ee7\u627f\u5176\u4ed6\u7c7b \u274c \u9700\u8981\u5ef6\u8fdf\u521d\u59cb\u5316 \u274c \u9700\u8981 setter \u65b9\u6cd5 \u274c \u5b57\u6bb5\u8fc7\u591a&#xff08;&gt; 10 \u4e2a&#xff09;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java Record\u4f7f\u7528\u6307\u5357Java Record \u4f7f\u7528\u6307\u5357\u4e00\u3001Record \u7684\u6838\u5fc3\u4f18\u52bf1. \u4ee3\u7801\u7b80\u6d01\u60272. \u4e0d\u53ef\u53d8\u6027\u4fdd\u8bc13. \u81ea\u52a8\u751f\u6210\u6837\u677f\u4ee3\u78014. \u4e0e\u5bc6\u5c01\u63a5\u53e3\u5b8c\u7f8e\u914d\u5408\u4e8c\u3001\u4ec0\u4e48\u65f6\u5019\u4f7f\u7528 Record\u2705 \u9002\u5408\u573a\u666f1. DTO&#xff08;\u6570\u636e\u4f20\u8f93\u5bf9\u8c61&#xff09;2. VO&#xff08;\u503c\u5bf9\u8c61&#xff09;3. \u914d\u7f6e\u5bf9\u8c614. \u96c6\u5408\u64cd\u4f5c\u7684\u8fd4\u56de\u503c5. 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