SpringBoot整合Mybatis

1.创建一个SpringBoot项目，参考：http://www.cnblogs.com/i-tao/p/8878562.html

2.创建项目目录结构

3.整合Mybatis

3.1、在pom.xml文件里添加mysql连接驱动和mybatis依赖

<!-- mybatis -->
<dependency>
     <groupId>org.mybatis.spring.boot</groupId>
     <artifactId>mybatis-spring-boot-starter</artifactId>
     <version>1.3.0</version>
</dependency>
<!-- mysql驱动 -->
<dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
</dependency>

3.2、application.properties里配置mapper位置，config位置，数据库信息等

#springboot整合mybatis
mybatis.mapper-locations=classpath:mapper/*Mapper.xml
mybatis.config-location=classpath:config/sqlMapConfig.xml
#mybatis定义别名
mybatis.type-aliases-package=com.tao.springboot.model
#数据库配置
spring.datasource.url=jdbc:mysql://localhost:3306/db_mybatis
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.username=root
spring.datasource.password=root

3.3、创建User.java,UserMapper.java,UserService.java,UserServiceImpl.java,UserAction.java

com.tao.springboot.model创建User.java

package com.tao.springboot.model;

public class User {
	private Integer id;
	private String user_name;
	private String password;
	private Integer age;
	public Integer getId() {
		return id;
	}
	public void setId(Integer id) {
		this.id = id;
	}
	public String getUser_name() {
		return user_name;
	}
	public void setUser_name(String user_name) {
		this.user_name = user_name;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
	public Integer getAge() {
		return age;
	}
	public void setAge(Integer age) {
		this.age = age;
	}
	
}

com.tao.springboot.mapper创建UserMapper.java

package com.tao.springboot.mapper;

import java.util.List;

import org.apache.ibatis.annotations.Mapper;

import com.tao.springboot.model.User;
@Mapper
public interface UserMapper {
	public List<User> findAll();
}

com.tao.springboot.service创建UserService.java

package com.tao.springboot.service;

import java.util.List;

import com.tao.springboot.model.User;

public interface UserService {
	public List<User> findAll();
}

com.tao.springboot.service.impl创建UserServiceImpl.java实现UserService接口

package com.tao.springboot.service.impl;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.tao.springboot.mapper.UserMapper;
import com.tao.springboot.model.User;
import com.tao.springboot.service.UserService;
@Service
public class UserServiceImpl implements UserService{
	@Autowired
	private UserMapper userMapper;

	@Override
	public List<User> findAll() {
		// TODO Auto-generated method stub
		return userMapper.findAll();
	}
	
}

com.tao.springboot.action创建UserAction.java

package com.tao.springboot.action;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import com.tao.springboot.model.User;
import com.tao.springboot.service.UserService;

@RestController
@EnableAutoConfiguration
@RequestMapping(value = "/User")
public class UserAction {
	@Autowired
	private UserService userService;
	@RequestMapping(value = "/findAll")
	public List<User> findAll(){
		return userService.findAll();
	}
}

3.4、创建SqlMapConfig.xml和UserMapper.xml

SqlMapConfig.xml

<?xml version="1.0" encoding="UTF-8" ?>  
<!DOCTYPE configuration  
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"  
"http://mybatis.org/dtd/mybatis-3-config.dtd">  
<configuration>  
	
</configuration>  

UserMapper.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.tao.springboot.mapper.UserMapper">
   <select id="findAll" resultType="user">
   		select * from user 
   </select>
</mapper>

3.5、App.java运行启动

浏览器访问：http://localhost:8080/User/findAll