spring boot和mybatis整合小项目

package com.example.demo.controller; import com.example.demo.entry.user; import com.example.demo.service.impl.UserServiceImpl; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; @RestController public class Usercontroller{ @Autowired public UserServiceImpl userService; @RequestMapping(value = "/user") public int user(){ user u=new user(); u.setAge(1); u.setName("h"); return userService.insert(u); } @RequestMapping(value = "/hello") public String hi(){ return "hello"; } }