springboot+mysql+mybatis+Mybatis-Generator+druid 项目demo

1.使用idea新建项目

2.使用Mybatis-Generator自动生成Dao、Model、Mapping相关文件

3.配置application.yml文件

server:
  port: 8080

spring:
  datasource:
   driver-class-name: com.mysql.jdbc.Driver
   url: jdbc:mysql://127.0.0.1:3306/day01?useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC
   username: root
   password: ......
   # 使用druid数据源
   type: com.alibaba.druid.pool.DruidDataSource

mybatis:
  type-aliases-package: com.example.duowei.mapper
  mapper-locations: classpath:mapper/*.xml

4.项目结构

5.各个部分的内容

1.AccountController

package com.example.test.controller;

import com.example.test.Service.AccountService;
import com.example.test.entity.Account;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

@RestController
@RequestMapping("")
public class AccountController {
    @Autowired
    private AccountService accountService;

    @GetMapping("/select/list")
    public List<Account> selectUserList() {
        return this.accountService.selectAccountList();
    }
}

　　2.AccountService

package com.example.test.Service;

import com.example.test.dao.AccountMapper;
import com.example.test.entity.Account;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class AccountService {
    @Autowired
    private AccountMapper accountMapper;
    public List<Account> selectAccountList() {
        return accountMapper.selectAccountList();
    }
}

　　3.AccountMapper

package com.example.test.dao;

import com.example.test.entity.Account;
import java.util.List;

import org.apache.ibatis.annotations.*;

@Mapper
public interface AccountMapper {
    /**
     * 查詢所有的賬戶信息
     * @return
     */
    public List<Account> selectAccountList();
}

　4.AccountMapper.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.example.test.dao.AccountMapper">
  <resultMap id="BaseResultMap" type="com.example.test.entity.Account">
    <!--
      WARNING - @mbggenerated
      This element is automatically generated by MyBatis Generator, do not modify.
    -->
    <constructor>
      <idArg column="id" javaType="java.lang.Integer" jdbcType="INTEGER" />
      <arg column="USERNAME" javaType="java.lang.String" jdbcType="VARCHAR" />
      <arg column="MONEY" javaType="java.lang.Integer" jdbcType="INTEGER" />
    </constructor>
  </resultMap>
  <sql id="Base_Column_List">
    <!--
      WARNING - @mbggenerated
      This element is automatically generated by MyBatis Generator, do not modify.
    -->
    id, USERNAME, MONEY
  </sql>

  <select id="selectAccountList" resultMap="BaseResultMap"  >
     SELECT
        <include refid="Base_Column_List" />
      FROM `account`
  </select>
</mapper>

　　ok 启动验证

数据库部分比较简单，随便建立一张表就可以。

另外项目已经上传至github，附上链接 https://github.com/Eric-chenjy/springboot-mysql-mybatis-Mybatis-Generator-druid-demo.git