InteliJ IDEA开发工具简单实现Spring-boot+mybatis注解形式和xml形式的maven项目

1、创建数据库及数据表

CREATE DATABASE /*! 32312 IF NOT EXISTS*/ `springbootdb` /*! 40100 DEFAULT CHARACTER SET utf8 */; USE `springbootdb`; /*Table structure for table `user` */ DROP TABLE IF EXISTS `user`; CREATE TABLE `user` ( `id` int( 11) NOT NULL, `username` varchar( 16) DEFAULT NULL, PRIMARY KEY ( `id`)) ENGINE=InnoDB DEFAULT CHARSET=utf8;

我的项目结构图

2，创建User.java

package com.spb.SpringBootDemo.vo; public class User { private String id; private String username; public String getId () { return id; } public void setId (String id) { this .id = id; } public String getUsername () { return username; } public void setUsername (String username) { this .username = username; }}

3、在pom.xml中加入以下依赖

<properties > <mybatis-spring-boot > 1.2.0 mybatis-spring-boot > <mysql-connector > 5.1.39 mysql-connector > properties >

< dependency >

< groupId > org.springframework.boot groupId >

< artifactId > spring-boot-starter-web artifactId >

dependency >

< dependency >

< groupId > org.springframework.boot groupId >

< artifactId > spring-boot-starter-test artifactId >

< scope > test scope >

dependency >

< dependency >

< groupId > org.mybatis.spring.boot groupId >

< artifactId > mybatis-spring-boot-starter artifactId >

< version > ${mybatis-spring-boot} version >

dependency >

< dependency >

< groupId > mysql groupId >

< artifactId > mysql-connector-java artifactId >

< version > ${mysql-connector} version >

dependency >

4, 在resource下打开application.properties文件，mysql和mybatis可以根据自己的地址配置。

spring.datasource.url = jdbc:mysql://localhost:3306/springbootdb

spring.datasource.username = root

spring.datasource.password = leishao

spring.datasource.driver-class-name = com.mysql.jdbc.Driver

mybatis.mapper-locations=classpath:mapper/*.xml

mybatis.type-aliases-package = com.spd.springbootdemo.vo

以上为mysql数据源相关配置，最后两行为mybatis需要扫描的model文件路径和mapper.xml文件路径

5.打开启动类加入相应mapper(dao)扫描注解

6、 新增UserDao，并在resources下面创建mapper目录，在下面创建UserMapper.xml

import com.spd.springbootdemo.vo.User;

import org.apache.ibatis.annotations. Insert ;

import org.apache.ibatis.annotations. Select ;

import org.springframework.stereotype. Repository ;

import javax.swing.text.Style;

import java.util.List;

public interface UserDao {

/**

* 新增用户

* @param user

*/

@Insert ( "insert into user(id,username) VALUES(#{id},#{username})" )

void createUser(User user);

/**

* 查询用户列表

* @return

*/

@Select ( "select * from user" )

List findAllUser();

}

---------------------------------------------------------------------------------------

xml version ="1.0" encoding ="UTF-8" ?>

mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >

< mapper namespace ="com.spd.springbootdemo.dao.UserDao" >

< resultMap id ="BaseResultMap" type ="com.spd.springbootdemo.vo.User" >

< result column ="id" property ="id" />

< result column ="username" property ="username" />

resultMap >

< parameterMap id ="User" type ="com.spd.springbootdemo.vo.User" />

< sql id ="Base_Column_List" >

id, username

sql >

< select id ="findAllUser" resultMap ="BaseResultMap" >

select

u.id,u.username

from user u

select >

< insert id ="createUser" parameterMap ="User" useGeneratedKeys ="true" keyProperty ="id" >

insert into

user(id,username)

values

(#{id},#{username})

insert >

mapper >

测试：

• 运行项目
• 用postman测试 

源码：https://download.csdn.net/download/weixin_41228362/10410222