日报202536

继续学习了Springboot，感觉有点麻烦：

User

package com.xxx.demo1.pojo;public class User {String id;String name;@Overridepublic String toString() {return "User{" +"id='" + id + '\'' +", name='" + name + '\'' +'}';}public String getId() {return id;}public void setId(String id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}
}

UserMapper

package com.xxx.demo1.mapper;import com.xxx.demo1.pojo.User;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Select;@Mapper
public interface UserMapper {@Select("select * from user where id=#{id}")public User findById(String id);
}

UserService

package com.xxx.demo1.service;import com.xxx.demo1.pojo.User;public interface UserService {public User findById(String id);
}

UserServiceImpl

package com.xxx.demo1.service.impl;import com.xxx.demo1.mapper.UserMapper;
import com.xxx.demo1.pojo.User;
import com.xxx.demo1.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;@Service
public class UserServiceImpl implements UserService {@Autowiredprivate UserMapper userMapper;@Overridepublic User findById(String id) {return userMapper.findById(id);}
}

UserController

package com.xxx.demo1.controller;import com.xxx.demo1.pojo.User;
import com.xxx.demo1.service.UserService;
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 {@Autowiredprivate UserService userService;@RequestMapping("/findById")public User findById(String id){return userService.findById(id);}
}