原文链接一个SprintBoot的完整例子，从数据库中读取数据，使用Postman进行测试。项目地址：https://github.com/Snowstorm0...1本地数据库本地数据库创建教程：创建本地数据库user_data:2代码体2.1控制器文件名MyController，内容：@RestController@RequestMapping("/homepage")public类MyController{@ResourceMyServicemyService;@GetMapping("/learnSpringBoot")publicStringlearnController(@RequestParam("number")intnumber){returnmyService.learnService(number);}}2.2服务文件名MyService，内容为：@Service@EnableSchedulingpublicclassMyService{@ResourceMyMappermyMapper;publicStringlearnService(intnumber){UserDTOres=myMapper.LearnMapper(number);字符串名称=res.getName();System.out.println("姓名："+姓名+"\n");返回名称；}}2.3dao文件名MyMapper，内容：@MapperpublicinterfaceMyMapper{UserDTOLearnMapper(intnumber);}2.4模型文件名UserDTO，内容：@DatapublicclassUserDTO{privateIntegernumber;私有字符串名称；publicIntegergetNumber(){返回数字；}publicvoidsetNumber(整数){this.number=number;}publicStringgetName(){返回名称；}publicvoidsetName(Stringname){this.name=name;}}2.5Application在application.properties中配置：#设置端口号server.port=8888application.yml中的配置：#连接数据库spring:datasource:url:jdbc:mysql://localhost:3306/sysdriver-class-name:com.mysql.cj.jdbc.Driverpassword:rootusername:root#配置mapper.xml路径mybatis:mapper-locations:classpath:mapper/*.xmltype-aliases-package:com.spring.root.dao3Postman配置Get，地址为：http://localhost:8888/homepag...输入数字：1001获取返回名：赵一想了解更多编程知识，请关注我的公众号：路代码
