springboot整合mybatis
1.application.properties中配置整合mybatis的配置文件、mybatis扫描别名的基本包与数据源
server.port=80 logging.level.org.springframework=DEBUG #springboot mybatis #jiazai mybatis peizhiwenjian mybatis.mapper-locations = classpath:mapper/*Mapper.xml mybatis.config-location = classpath:mapper/config/sqlMapConfig.xml mybatis.type-aliases-package = cn.qlq.bean #shujuyuan spring.datasource.driver-class-name= com.mysql.jdbc.Driver spring.datasource.url = jdbc:mysql://localhost:3306/test1?useUnicode=true&characterEncoding=utf-8 spring.datasource.username = root spring.datasource.password = 123456
2.pom.xml加入springboot整合mybatis的jar包与数据库驱动包
<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/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>cn.qlq</groupId> <artifactId>springboot-ssm</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>war</packaging> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.2.RELEASE</version> </parent> <dependencies> <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> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> </dependency> <!-- spring-boot整合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> <version>5.1.6</version> </dependency> <!-- 基本配置 --> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.9</version> <scope>test</scope> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>2.5</version> <scope>provided</scope> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jsp-api</artifactId> <version>2.0</version> <scope>provided</scope> </dependency> </dependencies> <build> <!-- 配置了很多插件 --> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.5.1</version> <configuration> <source>1.7</source> <target>1.7</target> <encoding>UTF-8</encoding> </configuration> </plugin> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
3.mybatis全局配置文件:
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>
4.编写代码:
(1)User.java
public class User implements Serializable{ /** * */ private static final long serialVersionUID = 1L; private Integer id; private String username; private Date birthday; private String sex; private String address; public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public Date getBirthday() { return birthday; } public void setBirthday(Date birthday) { this.birthday = birthday; } public String getSex() { return sex; } public void setSex(String sex) { this.sex = sex; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getAddress() { return address; } public void setAddress(String address) { this.address = address; } }
(2)UserMapper.java (注意接口上的注解是@mapper,代替之前扫描接口的操作)
@Mapper public interface UserMapper { public List<User> findAll();
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="cn.qlq.mapper.UserMapper"> <select id="findAll" resultType="user"> select * from user </select> </mapper>
(3)UserService.java
public interface UserService { /** * 根据接口查询所用的用户 */ public List<User> findAllUser(); }
UserServiceImpl.java
@Service public class UserServiceImpl implements UserService { @Autowired private UserMapper userMapper; public List<User> findAllUser() { List<User> list = userMapper.findAll(); return list; } }
(4)UserController.java
@RestController/**自动返回的是json格式数据***/ public class UserController { @Autowired private UserService userService; @RequestMapping("list") public List<User> list(){ List<User> list = userService.findAllUser(); return list; } }
注意:@RestController 注解 (自动返回的是json格式数据)