\u5b66\u4e60\u82cd\u7a79\u5916\u5356\u7b2c 2 \u5929\u3002\u4eca\u5929\u4e0d\u6ee1\u8db3\u4e8e "\u4ee3\u7801\u80fd\u8dd1\u5c31\u884c"，\u6211\u51b3\u5b9a\u5f7b\u5e95\u641e\u6e05\u695a Spring \u6700\u6838\u5fc3\u7684\u4e24\u4e2a\u6982\u5ff5：IoC（\u63a7\u5236\u53cd\u8f6c） \u548c DI（\u4f9d\u8d56\u6ce8\u5165）\u3002\u7136\u540e\u7528\u4e00\u4e2a\u771f\u5b9e\u7684\u63a5\u53e3，\u628a Controller \u2192 Service \u2192 Mapper \u7684\u5b8c\u6574\u8c03\u7528\u94fe\u8d70\u4e00\u904d\u3002<\/p>\n
\u60f3\u8c61\u4e00\u4e0b，\u6ca1\u6709 Spring \u6846\u67b6，\u6211\u8981\u5f00\u4e00\u5bb6\u9910\u5385\u3002\u6211\u662f\u8001\u677f（Service），\u9700\u8981\u4e00\u4e2a\u5207\u83dc\u5de5（Mapper）\u6765\u5e72\u6d3b\u3002<\/p>\n
\u6211\u53ea\u80fd\u81ea\u5df1\u53bb\u62db\u4eba：<\/p>\n
public class EmployeeServiceImpl {
\n \/\/ \u6211\u81ea\u5df1\u8d1f\u8d23"\u627e"\u548c"\u521b\u5efa"\u8fd9\u4e2a\u5207\u83dc\u5de5
\n private EmployeeMapper employeeMapper = new EmployeeMapperImpl(); <\/p>\n
public void login() {
\n employeeMapper.getByUsername(…); \/\/ \u7136\u540e\u624d\u80fd\u7528\u4ed6
\n }
\n}<\/p>\n
\u8fd9\u4e48\u505a\u7684\u95ee\u9898：<\/p>\n
Spring \u6846\u67b6\u5f00\u4e86\u4e00\u5bb6\u5f3a\u5927\u7684 "\u4e2d\u4ecb\u516c\u53f8"，\u5b66\u540d\u53eb\u505a IoC \u5bb9\u5668（\u63a7\u5236\u53cd\u8f6c\u5bb9\u5668）\u3002<\/p>\n
\u6240\u6709 Bean（@Service\/@Mapper\/@Controller \u7b49）\u5728\u7a0b\u5e8f\u542f\u52a8\u65f6\u88ab\u5bb9\u5668\u521b\u5efa\u3001\u7ba1\u7406；\u9700\u8981\u4f9d\u8d56\u65f6，\u5bb9\u5668\u81ea\u52a8\u6ce8\u5165，\u5b9e\u73b0"\u522b\u627e\u6211，\u6211\u4f1a\u627e\u4f60"\u7684\u8bbe\u8ba1\u54f2\u5b66\u3002<\/p>\n
@Service \/\/ 1. \u6ce8\u518c\u4e3aBean，\u4ea4\u7ed9Spring\u7ba1\u7406
\npublic class EmployeeServiceImpl {<\/p>\n
@Autowired \/\/ 2. \u58f0\u660e\u4f9d\u8d56，\u5bb9\u5668\u81ea\u52a8\u6ce8\u5165
\n private EmployeeMapper employeeMapper; \/\/ 3. \u65e0\u9700\u624b\u52a8\u521b\u5efa，\u76f4\u63a5\u4f7f\u7528<\/p>\n
public void login() {
\n employeeMapper.getByUsername(…); \/\/ 4. \u76f4\u63a5\u8c03\u7528
\n }
\n}<\/p>\n
\u6838\u5fc3\u4ef7\u503c：\u89e3\u8026<\/p>\n
\u4ee5\u542f\u7528 \/ \u7981\u7528\u5458\u5de5\u529f\u80fd\u4e3a\u4f8b，\u6253\u901a\u4e09\u5c42\u8c03\u7528\u5168\u6d41\u7a0b\u3002<\/p>\n
\u7ba1\u7406\u5458\u70b9\u51fb\u7981\u7528\u6309\u94ae，\u5c06\u5458\u5de5\u8d26\u53f7\u72b6\u6001\u6539\u4e3a\u505c\u7528（0）\u3002<\/p>\n
\u8d1f\u8d23\u63a5\u6536\u8bf7\u6c42\u3001\u53c2\u6570\u89e3\u6790\u3001\u8c03\u7528 Service\u3001\u8fd4\u56de\u7edf\u4e00\u7ed3\u679c<\/p>\n
\/\/ EmployeeController.java
\n@PostMapping("\/status\/{status}")
\n@ApiOperation("\u542f\u7528\u7981\u7528\u5458\u5de5\u8d26\u53f7")
\npublic Result startOrStop(@PathVariable Integer status, Long id) {
\n log.info("\u542f\u7528\u7981\u7528\u5458\u5de5\u8d26\u53f7：{},{}", status, id);
\n employeeService.startOrStop(status, id);
\n return Result.success();
\n}<\/p>\n
\u8d1f\u8d23\u4e1a\u52a1\u903b\u8f91\u7f16\u6392\u3001\u6570\u636e\u7ec4\u88c5<\/p>\n
\/\/ EmployeeServiceImpl.java
\n@Override
\npublic void startOrStop(Integer status, Long id) {
\n \/\/ \u7ec4\u88c5\u8981\u66f4\u65b0\u7684\u6570\u636e
\n Employee employee = Employee.builder()
\n .status(status)
\n .id(id)
\n .updateTime(LocalDateTime.now())
\n .updateUser(BaseContext.getCurrentId())
\n .build();<\/p>\n
\/\/ \u4ea4\u7ed9Mapper\u6267\u884c
\n employeeMapper.update(employee);
\n}<\/p>\n
\u8e29\u5751\u8bb0\u5f55<\/p>\n
\/\/ \u9519\u8bef\u5199\u6cd5：build()\u8fd4\u56de\u65b0\u5bf9\u8c61\u672a\u63a5\u6536，\u4f20\u5165\u7a7a\u5bf9\u8c61
\nEmployee employee = new Employee();
\nEmployee.builder().status(status).id(id).build();
\nemployeeMapper.update(employee); \/\/ SQL\u6761\u4ef6id=null<\/p>\n
\u2705 \u6b63\u786e\u5199\u6cd5：\u7528\u53d8\u91cf\u63a5\u6536builder().build()\u8fd4\u56de\u7684\u5bf9\u8c61<\/p>\n
Mapper \u63a5\u53e3<\/p>\n
\/\/ EmployeeMapper.java
\n@Mapper
\npublic interface EmployeeMapper {
\n void update(Employee employee);
\n}<\/p>\n
XML SQL \u6620\u5c04<\/p>\n
EmployeeMapper.xml –>
\n<update id="update" parameterType="Employee">
\n update employee
\n >
\n ="name != null">name = #{name},>
\n ="username != null">username = #{username},>
\n ="password != null">password = #{password},>
\n ="phone != null">phone = #{phone},>
\n ="sex != null">sex = #{sex},>
\n ="idNumber != null">id_number = #{idNumber}, != null">update_time = #{updateTime},>
\n ="updateUser != null">update_user = #{updateUser}, null">status = #{status}, id = #{id}
\n<\/update><\/p>\n
MyBatis \u6267\u884c\u6d41\u7a0b<\/p>\n
\u6700\u7ec8\u6267\u884c SQL：<\/p>\n
update employee set status = 0, update_time = '2026-08-01…', update_user = 1 where id = 3<\/p>\n
\u6570\u636e\u5e93\u66f4\u65b0\u6210\u529f
\n \u2192 Mapper \u8fd4\u56de void
\n \u2192 Service \u8fd4\u56de void
\n \u2192 Controller \u5c01\u88c5 Result.success()
\n \u2192 \u524d\u7aef\u6536\u5230 {"code": 1, "msg": "\u64cd\u4f5c\u6210\u529f"}<\/p>\n
\u524d\u7aef HTTP \u8bf7\u6c42
\n \u2193
\nController \u5c42（\u63a5\u6536\u8bf7\u6c42\u3001\u53c2\u6570\u89e3\u6790）
\n | \u6570\u636e\u5f62\u6001：\u96f6\u6563\u53c2\u6570 \u2192 \u4f20\u7ed9Service
\n \u2193
\nService \u5c42（\u4e1a\u52a1\u7f16\u6392\u3001\u5bf9\u8c61\u7ec4\u88c5）
\n | \u6570\u636e\u5f62\u6001：\u96f6\u6563\u53c2\u6570 \u2192 Employee\u5b9e\u4f53
\n \u2193
\nMapper \u5c42（SQL\u751f\u6210\u3001\u6570\u636e\u64cd\u4f5c）
\n | \u6570\u636e\u5f62\u6001：\u5b9e\u4f53 \u2192 \u6267\u884cSQL
\n \u2193
\n\u6570\u636e\u5e93\u6267\u884c
\n \u2193
\n\u7ed3\u679c\u5c42\u5c42\u8fd4\u56de \u2192 Controller\u5c01\u88c5 \u2192 \u524d\u7aef\u54cd\u5e94<\/p>\n
\u4eca\u5929\u7ec8\u4e8e\u641e\u61c2\u4e86IoC\/DI！\u770b\u8bfe\u7684\u65f6\u5019\u4e00\u76f4\u4e91\u91cc\u96fe\u91cc\u611f\u89c9\u8ddf\u7740\u6572\u5b8c\u5565\u90fd\u6ca1\u5b66\u5230；\u6253\u901a\u4e86Controller\u2192Service\u2192Mapper\u4e09\u5c42\u8c03\u7528\u5168\u6d41\u7a0b，\u7ec8\u4e8e\u662f\u89c9\u5f97\u5b66\u5230\u4e1c\u897f\u4e86\u3002<\/p>\n
\u5982\u679c\u4f60\u4e5f\u5728\u5b66 Spring，\u5e0c\u671b\u8fd9\u7bc7\u535a\u5ba2\u80fd\u5e2e\u4f60\u628a IoC\u3001DI \u548c\u4e09\u5c42\u8c03\u7528\u94fe\u5f7b\u5e95\u5403\u900f～ \u6b22\u8fce\u8bc4\u8bba\u533a\u4ea4\u6d41，\u4e00\u8d77\u8fdb\u6b65！<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"
\u524d\u8a00\u5b66\u4e60\u82cd\u7a79\u5916\u5356\u7b2c 2 \u5929\u3002\u4eca\u5929\u4e0d\u6ee1\u8db3\u4e8e \\”\u4ee3\u7801\u80fd\u8dd1\u5c31\u884c\\”，\u6211\u51b3\u5b9a\u5f7b\u5e95\u641e\u6e05\u695a Spring \u6700\u6838\u5fc3\u7684\u4e24\u4e2a\u6982\u5ff5：IoC（\u63a7\u5236\u53cd\u8f6c） \u548c DI（\u4f9d\u8d56\u6ce8\u5165）\u3002\u7136\u540e\u7528\u4e00\u4e2a\u771f\u5b9e\u7684\u63a5\u53e3，\u628a Controller \u2192 Service \u2192 Mapper \u7684\u5b8c\u6574\u8c03\u7528\u94fe\u8d70\u4e00\u904d\u3002\u4e00\u3001\u4f20\u7edf\u65b9\u5f0f：\u6211\u81ea\u5df1\u62db\u4eba\u5e72\u6d3b\u60f3\u8c61\u4e00\u4e0b，\u6ca1\u6709 Spring \u6846\u67b6，\u6211\u8981\u5f00\u4e00\u5bb6\u9910\u5385\u3002\u6211<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[9098,99,1769,101,98],"topic":[],"class_list":["post-89111","post","type-post","status-publish","format-standard","hentry","category-server","tag-it","tag-java","tag-mybatis","tag-spring","tag-spring-boot"],"yoast_head":"\n