springboot-mybatis

1、依赖

<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>

<!--启动时启动内置tomcat -->
<dependency>
　　<groupId>org.springframework.boot</groupId>
　　<artifactId>spring-boot-starter-tomcat</artifactId>
　　<scope>provided</scope>
</dependency>

<!--对Jsp支持 -->
<dependency>
　　<groupId>org.apache.tomcat.embed</groupId>
　　<artifactId>tomcat-embed-jasper</artifactId>
</dependency>

<!-- 支持jstl -->
<dependency>
　　<groupId>javax.servlet</groupId>
　　<artifactId>jstl</artifactId>
</dependency>

<!-- fastjson -->
<dependency>
　　<groupId>com.alibaba</groupId>
　　<artifactId>fastjson</artifactId>
　　<version>1.2.46</version>
</dependency>

<!-- MyBatis -->
<dependency>
　　<groupId>org.mybatis.spring.boot</groupId>
　　<artifactId>mybatis-spring-boot-starter</artifactId>
　　<version>1.1.1</version>
</dependency>

<!-- MySql驱动 -->
<dependency>
　　<groupId>mysql</groupId>
　　<artifactId>mysql-connector-java</artifactId>
</dependency>

<dependency>
　　<groupId>org.projectlombok</groupId>
　　<artifactId>lombok</artifactId>
　　<version>1.16.22</version>
</dependency>

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2、application.properties

#\u8BBE\u7F6ETomcat\u7AEF\u53E3\uFF0C\u9ED8\u8BA48080
server.port=8080
#\u8BBE\u7F6ETomcat\u7F16\u7801
server.tomcat.uri-encoding=UTF-8
#\u8BBE\u7F6E\u89C6\u56FE\u89E3\u6790\u5668\u8DEF\u5F84
spring.mvc.view.prefix=/WEB-INF/views/
#\u8BBE\u7F6E\u89C6\u56FE\u89E3\u6790\u5668\u540E\u7F00
spring.mvc.view.suffix=.jsp 
#\u6570\u636E\u5E93\u914D\u7F6E
spring.datasource.url=jdbc:mysql://localhost:3306/licy?useUnicode=true&characterEncoding=utf-8&zeroDateTimeBehavior=convertToNull&allowMultiQueries=true
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.driver-class-name=com.mysql.jdbc.Driver 
#\u914D\u7F6E.xml\u6587\u4EF6\u8DEF\u5F84
mybatis.mapper-locations=classpath:mapper/*.xml
#\u914D\u7F6E\u6A21\u578B\u8DEF\u5F84
mybatis.type-aliases-package=pom.domain

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3、在resources目录下新建 mapper文件夹并创建文件UserMapper.xml

<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE mapper PUBLIC "-//ibatis.apache.org//DTD Mapper 3.0//EN" "http://ibatis.apache.org/dtd/ibatis-3-mapper.dtd">
<mapper namespace="pom.dao.UserDao">
　　　<select id="getUserById" parameterType="pom.domain.User"
　　　　resultType="pom.domain.User"> SELECT * FROM user WHERE ID = #{id}
　　</select>
</mapper>

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4、dao

@Mapper
public interface UserDao {
　　User getUserById(User user);
}

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5、service

public interface UserService {
　　User getUserById(User user);
}

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6、serviceImpl

@Service
public class UserServiceImpl implements UserService{

　　@Autowired
　　private UserDao userDao;

　　@Override
　　public User getUserById(User user) {
　　　　return userDao.getUserById(user);
　　}
}

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7、controller

@RestController
// 表示该controller类下所有的方法都公用的一级上下文根
@RequestMapping(value = "/springboot")
public class UserController {

　　@Autowired
　　private UserService userService;

　　// 这里使用@RequestMapping注解表示该方法对应的二级上下文路径
　　@RequestMapping(value = "/getUserByGet", method = RequestMethod.GET)
　　String getUserByGet(@RequestParam(value = "id") String id) {
　　　　User user = new User();
　　　　user.setId(id);
　　　　User u = userService.getUserById(user);
　　　　return "Hello " + id;
　　}
}

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8、访问

http://localhost:8080/springboot/getUserByGet?id=1

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