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;

    @Override
    public 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 {

    @Autowired
    private UserMapper userMapper;


    @Override
    public 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 {
    @Autowired
    private UserService userService;
    @RequestMapping("/findById")
    public User findById(String id){
        return userService.findById(id);
    }
}