1天搞定SpringBoot+Vue全栈开发,mybatis plus

package com.example.mpdemo.controller; import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper; import com.baomidou.mybatisplus.core.metadata.IPage; import com.baomidou.mybatisplus.extension.plugins.pagination.Page; import com.example.mpdemo.entity.User; import com.example.mpdemo.mapper.UserMapper; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.PostMapping; import org.springframework.web.bind.annotation.RestController; import javax.annotation.Resource; import java.util.List; @RestController public class UserController { @Autowired // @Resource private UserMapper userMapper; @GetMapping("/user") public List query(){ // List<User> list = userMapper.find(); List<User> list = userMapper.selectList(null); System.out.println(list); return list; } @PostMapping("/user") public String save(User user) { System.out.println(user); int i = userMapper.insert(user); System.out.println(user); if (i > 0) { return "插入成功"; } else { return "插入失败"; } } @GetMapping("/user/findAll") public List<User> find(){ return userMapper.selectAllUserAndOrders(); } //条件查询 @GetMapping("/user/find") public List<User> findByCond(){ QueryWrapper<User> queryWrapper = new QueryWrapper(); queryWrapper.eq("username","zhangsan"); return userMapper.selectList(queryWrapper); } //分页查询 @GetMapping("/user/findByPage") public IPage findByPage(){ //设置起始值及每页条数 Page<User> page = new Page<>(0,2); IPage iPage = userMapper.selectPage(page,null); return iPage; } }