使用sts工具、SpringBoot整合mybatis的详细步骤

<project xmlns="http://maven.apache.org/POM/4.0.0" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.ysd.springboot</groupId>
<artifactId>spring-boot-mybatis</artifactId>
<packaging>jar</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>spring-boot-mybatis</name>
<url>http://maven.apache.org</url>
<!-- Spring Boot 启动父依赖 -->
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.1.RELEASE</version>
</parent>
<properties>
<!-- 项目设置:编码格式 UTF-8 及 springboot 相关版本 -->
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
<mybatis-spring-boot>1.2.0</mybatis-spring-boot>
<mysql-connector>5.1.39</mysql-connector>
<druid>1.0.18</druid>
</properties>
<dependencies>
<!-- Spring Boot SpringMVC 依赖 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- Spring Boot Mybatis 依赖 -->
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>${mybatis-spring-boot}</version>
</dependency>
<!-- MySQL 连接驱动依赖 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql-connector}</version>
</dependency>
</dependencies>
<build>
<plugins>
<!-- SpringBoot 插件 -->
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
<!-- SpringBoot 项目打包名称 -->
<finalName>springmybatis</finalName>
</build>
</project>

## 数据源配置
spring.datasource.url=jdbc:mysql://localhost:3306/库名
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
## Mybatis 配置
# 实体所在包，起别名
mybatis.typeAliasesPackage=org.spring.springboot.domain
# 映射文件所在路径
mybatis.mapperLocations=classpath:mapper/*.xml

@SpringBootApplication // Spring Boot 应用的标识
@MapperScan("org.spring.springboot.dao") // mapper 接口类扫描包配置
//如果要显示 Sql 细节还需要在 logback 配置<logger name="接口类所在包" level="debug" />
public class Application {
public static void main(String[] args) {
// 程序启动入口
// 启动嵌入式的 Tomcat 并初始化 Spring 环境及其各 Spring 组件
SpringApplication.run(Application.class,args);
}
}

/*创建数据库 springbootdb*/
CREATE DATABASE /*!32312 IF NOT EXISTS*/`springbootdb` /*!40100 DEFAULT CHARACTER SET utf8
*/;
USE `springbootdb`;
/*创建表 city*/
DROP TABLE IF EXISTS `city`;
CREATE TABLE `city` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT COMMENT '城市编号', `provinceId` int(10) unsigned DEFAULT NULL COMMENT '省份编号', `cityName` varchar(20) DEFAULT NULL COMMENT '城市名称', `description` text COMMENT '城市描述', PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8;
/*插入测试数据 */
insert into `city`(`id`,`provinceId`,`cityName`,`description`) values (1,1,'北京','这是北京市的描述信
息,北京这家伙是中国首都,百年帝都,政治经济文化中心,也将是世界的中心.'),(2,2,'郑州','这是郑
州市的描述信息,郑州这家伙是河南省会,城市中的后起之秀,河南政治经济文化中心,也是中国的
中心城市.'),(3,3,'ZhengZhou','这是郑州市的描述信息,郑州这家伙是河南省会,城市中的后起之秀, 河南政治经济文化中心,也是中国的中心城市.');

<?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="org.mybatis.example.BlogMapper">
 <select id="selectBlog" resultType="Blog">
 select * from Blog where id = #{id}
 </select>
</mapper>

package com.zha.entity;

public class City {
	private Integer id; //城市编号
	private Integer provinceId; //省份编号
	private String cityName;//城市名称
	private String description;//城市描述
	public Integer getId() {
		return id;
	}
	public void setId(Integer id) {
		this.id = id;
	}
	public Integer getProvinceId() {
		return provinceId;
	}
	public void setProvinceId(Integer provinceId) {
		this.provinceId = provinceId;
	}
	public String getCityName() {
		return cityName;
	}
	public void setCityName(String cityName) {
		this.cityName = cityName;
	}
	public String getDescription() {
		return description;
	}
	public void setDescription(String description) {
		this.description = description;
	}
	@Override
	public String toString() {
		return "City [id=" + id + ", provinceId=" + provinceId + ", cityName=" + cityName + ", description="
				+ description + "]";
	}
	public City(Integer id, Integer provinceId, String cityName, String description) {
		super();
		this.id = id;
		this.provinceId = provinceId;
		this.cityName = cityName;
		this.description = description;
	}
	public City() {
		super();
	}
	

}

package com.zha.dao;

import java.util.List;

import com.zha.entity.City;

public interface CityDao {
	public List<City> getAll();
}

package com.zha.controller;

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

import com.zha.dao.CityDao;
@RestController
public class helloController {
	@Autowired
	CityDao cityDao;
	@RequestMapping("/hello")
	public String hello() {
		return ""+cityDao.getAll();
		
	}

}

<?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.zha.dao.CityDao">
	<select id="getAll" resultType="com.zha.entity.City">
		SELECT
		city.id,
		city.provinceId,
		city.cityName,
		city.description
		FROM
		city
	</select>
</mapper>