springbootmybatis

springboot整合mybatis写起来很容易，但要知道为什么要这样写，有其他的方法吗？

package com.cvs.demo.bean;

import lombok.Data;

@Data
public class User {
    private Integer id;
    private String username;
    private String password;
    private String address;
}

package com.cvs.demo.mapper;

import com.cvs.demo.bean.User;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Select;

import java.util.List;

@Mapper
public interface UserMapper {
    @Select("select *from user")
    List<User> find();
}

package com.cvs.demo.service;

import com.cvs.demo.bean.User;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public interface UserService {
    List<User> find();
}

package com.cvs.demo.service.impl;


import com.cvs.demo.bean.User;
import com.cvs.demo.mapper.UserMapper;
import com.cvs.demo.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
@Service("userService")
public class UserServiceImpl implements UserService {
    @Autowired
    private UserMapper userMapper;
    @Override
    public List<User> find() {
        return userMapper.find();
    }
}

package com.cvs.demo.controller;

import com.cvs.demo.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import java.util.List;

@Controller
public class HelloController {
    @Autowired
    UserService userService;
    @RequestMapping("/hello")
    public String getall(Model model){
        List list= userService.find();
        model.addAttribute("list",list);
        return "index";
    }
}
/*这些只是crud，可以做到到还有其他，要每天去坚持去做。*/

spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql:///springjdbc
spring.datasource.username=root
spring.datasource.password=root

<!DOCTYPE html>
<html lang="en" xmlns:th="https://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>1111</title>
</head>
<body>
<div th:text="${list}"></div>
</body>
</html>
--冰见

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