springboot+mybatis HelloWorld示例。

版本：springboot-1.5.1.RELEASE、mybatis-spring-boot-1.2.0

1，maven配置文件pom.xml如下：

    <properties>        <java.version>1.8</java.version>        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>        <mybatis-spring-boot>1.2.0</mybatis-spring-boot>    </properties>    <parent>        <groupId>org.springframework.boot</groupId>        <artifactId>spring-boot-starter-parent</artifactId>        <version>1.5.1.RELEASE</version>    </parent>    <dependencies>        <dependency>            <groupId>junit</groupId>            <artifactId>junit</artifactId>            <version>4.12</version>            <scope>test</scope>        </dependency>    <!-- spring boot -->        <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-starter-web</artifactId>            <exclusions>                <exclusion>                <groupId>org.hibernate</groupId>                <artifactId>hibernate-validator</artifactId>      </exclusion>            </exclusions>        </dependency>        <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-starter-test</artifactId>            <scope>test</scope>        </dependency>        <!-- mybatis -->        <dependency>            <groupId>org.mybatis.spring.boot</groupId>            <artifactId>mybatis-spring-boot-starter</artifactId>            <version>${mybatis-spring-boot}</version>        </dependency>        <!-- mysql-jdbc -->            <dependency>            <groupId>mysql</groupId>            <artifactId>mysql-connector-java</artifactId>            <version>5.1.27</version>        </dependency>    </dependencies>

2，springboot配置文件：application.properties

    server.port=9090    spring.datasource.url=jdbc:mysql://xxxx:3306/xxx?useUnicode=true&characterEncoding=utf8    spring.datasource.username=xxx    spring.datasource.password=xxx    spring.datasource.driver-class-name=com.mysql.jdbc.Driver

3，编写mybatis.model代码，HelloDO.java、HelloMapper.java、HelloMapper.xml

    package mybatis.model;    public class HelloDO {        private Long id;        private String name;        public Long getId() {            return id;        }        public void setId(Long id) {            this.id = id;        }        public String getName() {            return name;        }        public void setName(String name) {            this.name = name;        }       }    HelloMapper.java    package mybatis.model;    import org.springframework.stereotype.Repository;    @Repository(value="helloMapper")    public interface HelloMapper {        public void insert(HelloDO hello);    }    HelloMapper.xml    <?xml version="1.0" encoding="utf-8" ?>        <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTO Mapper 3.0//EN"     "http://mybatis.org/dtd/mybatis-3-mapper.dtd">        <mapper namespace="mybatis.model.HelloMapper">        <resultMap type="mybatis.model.HelloDO" id="helloDO">            <id column="ID" property="id" />            <result column="NAME" property="name" />        </resultMap>        <insert id="insert" parameterType="mybatis.model.HelloDO">            insert into            HELLO(ID,NAME)            values(#{id},#{name})        </insert>    </mapper>

4，编写service类：HelloWorldService.java

package mybatis.service;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Service;import mybatis.model.HelloDO;import mybatis.model.HelloMapper;@Service("helloWorldService")public class HelloWorldService {    @Autowired    private HelloMapper helloMapper;    public void addHello(HelloDO helloDO) {        // TODO Auto-generated method stub        helloMapper.insert(helloDO);    }}

5，编写App类：App.java

import org.mybatis.spring.annotation.MapperScan;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.web.bind.annotation.RequestBody;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import org.springframework.web.bind.annotation.ResponseBody;import org.springframework.web.bind.annotation.RestController;import mybatis.model.HelloDO;import mybatis.service.HelloWorldService;/*** Hello world!**/@SpringBootApplication(scanBasePackages = "mybatis/service")//scanBasePackages配置用于spring扫描service类@RestController@MapperScan("mybatis")//MapperScan用于扫描mybatis配置文件public class App {    @Autowired    HelloWorldService helloWorldService;    @RequestMapping(value = "/create/hello", method = RequestMethod.POST, consumes = { "text/plain", "application/*" })    public @ResponseBody long createHello(@RequestBody HelloDO helloDO) {        helloWorldService.addHello(helloDO);        return helloDO.getId();    }    public static void main(String[] args) {        SpringApplication.run(App.class, args);    }}

6，运行测试

1，根据HelloMapper.xml，在数据库中建表。2，运行App类，然后通过http://localhost:9090/create/hello来测试