本例将采用maven管理，代码托管在github上，地址：https://github.com/wolf909867753/springboot。

1。创建maven-module，mybaits,并在pom.xml中添加springboot依赖

<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">
    <!-- Spring Boot 启动父依赖 -->
    <parent>
        <artifactId>spring-boot-starter-parent</artifactId>
        <groupId>org.springframework.boot</groupId>
        <version>1.5.1.RELEASE</version>
    </parent>

    <modelVersion>4.0.0</modelVersion>
    <artifactId>mybaits</artifactId>
    <packaging>war</packaging>
    <name>Springboot 整合 Mybatis 的完整 Web 案例</name>
    <url>http://maven.apache.org</url>

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

    <dependencies>

        <!-- Spring Boot Web 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>


        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>
    </dependencies>
    <build>
        <finalName>mybaits</finalName>
    </build>
</project>

2.创建表，参考springboot\mybaits\sql.sql

CREATE DATABASE springbootdb;
use springbootdb;
CREATE TABLE `city` (
  `id` int(10) unsigned NOT NULL AUTO_INCREMENT COMMENT '城市编号',
  `province_id` int(10) unsigned  NOT NULL COMMENT '省份编号',
  `city_name` varchar(25) DEFAULT NULL COMMENT '城市名称',
  `description` varchar(25) DEFAULT NULL COMMENT '描述',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;


INSERT city VALUES (1 ,1,'潍坊市','我的家在山东省潍坊市。');

3.创建工程mybaits,添加配置文件resources\application.properties工程

## 数据源配置
spring.datasource.driver-class-name = com.mysql.jdbc.Driver
spring.datasource.url = jdbc:mysql://localhost:3306/springbootdb?useUnicode=true&characterEncoding=utf8
spring.datasource.username = root
spring.datasource.password = root

##Mybatis 配置
mybatis.type-aliases-package = com.springboot.domain
mybatis.mapper-locations = classpath:mapper/*.xml


#mybatis.config = mybatis 配置文件名称
#mybatis.mapperLocations = mapper xml 文件地址

#mybatis.typeAliasesPackage = 实体类包路径
#mybatis.typeHandlersPackage = type handlers 处理器包路径
#mybatis.check-config-location = 检查 mybatis 配置是否存在，一般命名为 mybatis-config.xml

#mybatis.executorType = 执行模式。默认是 SIMPLE

    目录如下：

    com\springboot\domain\City.java
    
    

public class City implements Serializable{


    /**
     * 城市编号
     */
    private Long id;

    /**
     * 省份编号
     */
    private Long provinceId;

    /**
     * 城市名称
     */
    private String cityName;

    /**
     * 描述
     */
    private String description;
      getter/setter.....
}

.
    com\springboot\dao\CityDao.java
    

public interface CityDao {
    /**
     * 根据城市名称，查询城市信息
     *
     * @param cityName 城市名
     */
    public City queryByName(@Param("cityName") String cityName);
}

    
    ##############mapper配置文件######################
    resources\mapper\CityMapper.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.springboot.dao.CityDao">
    <resultMap id="BaseResultMap" type="com.springboot.domain.City">
        <result column="id" property="id" />
        <result column="province_id" property="provinceId" />
        <result column="city_name" property="cityName" />
        <result column="description" property="description" />
    </resultMap>

    <parameterMap id="City" type="com.springboot.domain.City"/>

    <sql id="Base_Column_List">
        id, province_id, city_name, description
    </sql>

    <select id="queryByName" resultMap="BaseResultMap" parameterType="java.lang.String">
        select
        <include refid="Base_Column_List" />
        from city
        where city_name = #{cityName}
    </select>

</mapper>

    ##############mapper配置文件######################
    com\springboot\service\ICityService.java
    
    

public interface ICityService {
    /**
     * 根据城市名称，查询城市信息
     * @param cityName
     */
    public City queryCityByName(String cityName);
}

    com\springboot\service\impl\CityServiceImpl.java
    

@Service
public class CityServiceImpl implements ICityService {

    @Autowired
    private CityDao cityDao;

    @Override
    public City queryCityByName(String cityName) {
        return this.cityDao.queryByName(cityName);
    }
}

    
    com\springboot\controller\CityController.java
    
    

@RestController
@RequestMapping("city/")
public class CityController {

    @Autowired
    private ICityService cityService;

    @RequestMapping("query/{name}")
    public City queryByName(@PathVariable("name") String name){
        return this.cityService.queryCityByName(name);
    }

//    @RequestMapping(value = "/api/city", method = RequestMethod.GET)
//    public City findOneCity(@RequestParam(value = "cityName", required = true) String cityName) {
//        return cityService.findCityByName(cityName);
//    }

    @RequestMapping(value = "query",method = RequestMethod.POST)
    public City findByName(String name){
        System.out.println(">>>>>>>>>>>name:"+name);
        return this.cityService.queryCityByName(name);
    }


}

    com\springboot\Application.java
    

@SpringBootApplication
@MapperScan("com.springboot.dao")
public class Application /*implements ApplicationRunner*/{


//    @Override
//    public void run(ApplicationArguments applicationArguments) throws Exception {
//        System.out.println(">>>>>>>>>>>>>>>>>>>>>>ApplicationRunner start");
//    }

    public static void main(String[] args) {
        System.out.println(">>>>>>>>>>>>>>>>>>>>>>Application start");
        SpringApplication.run(Application.class,args);
    }
}

    
4.运行Application.java的main方法或者发布到tomcat,
    访问http://127.0.0.1:8080/city/query/%E6%BD%8D%E5%9D%8A%E5%B8%82,
    输出
        {"id":1,"provinceId":1,"cityName":"潍坊市","description":"我的家在山东省潍坊市。"}