SpringBoot整合其他技术

SpringBoot整合Mybatis

添加依赖

<!--mybatis起步依赖-->
<dependency>
    <groupId>org.mybatis.spring.boot</groupId>
    <artifactId>mybatis-spring-boot-starter</artifactId>
    <version>1.1.1</version>
</dependency>
<!-- MySQL连接驱动 -->
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
</dependency>

添加数据库连接信息

在application.properties中添加数据库的连接信息

spring.datasource.driverClassName=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=utf8
spring.datasource.username=root
spring.datasource.password=123456

创建实体Bean 跟User表对应

public class User {
    // 主键
    private Long id;
    // 用户名
    private String username;
    // 密码
    private String password;
    // 姓名
    private String name;
//getter和setter方法。。。。
}

编写映射接口类

@Mapper
public interface UserMapper {
	public List<User> queryUserList();
}

@Mapper标记该类是一个mybatis的mapper接口，可以被spring boot自动扫描到spring上下文中
配置Mapper映射文件
在resource下编写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="com.rpf.mapper.UserMapper">
    <select id="queryUserList" resultType="user">
        select * from user
    </select>
</mapper>

在application.properties中添加mybatis的信息

#spring集成Mybatis环境
#pojo别名扫描包
mybatis.type-aliases-package=com.rpf.domain
#加载Mybatis映射文件
mybatis.mapper-locations=classpath:mapper/*Mapper.xml

编写测试Controller

@Controller
public class MapperController {

    @Autowired
    private UserMapper userMapper;

    @RequestMapping("/queryUser")
    @ResponseBody
    public List<User> queryUser(){
        List<User> users = userMapper.queryUserList();
        return users;
    }

}

SpringBoot整合Junit

添加依赖坐标

<!--测试的起步依赖-->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-test</artifactId>
    <scope>test</scope>
</dependency>

测试类

@RunWith(SpringRunner.class)
@SpringBootTest(classes = MySpringBootApplication.class)
public class MapperTest {

    @Autowired
    private UserMapper userMapper;

    @Test
    public void test() {
        List<User> users = userMapper.queryUserList();
        System.out.println(users);
    }

}

@SpringBootTest的属性指定的是引导类的字节码对象

SpringBoot整合Spring Data JPA

添加依赖

<!-- springBoot JPA的起步依赖 -->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<!-- MySQL连接驱动 -->
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
</dependency>

application.properties中配置数据库和jpa的相关属性

spring.datasource.driverClassName=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=utf8
spring.datasource.username=root
spring.datasource.password=123456

#JPA Configuration:
spring.jpa.database=MySQL
spring.jpa.show-sql=true
spring.jpa.generate-ddl=true
spring.jpa.hibernate.ddl-auto=update
spring.jpa.hibernate.naming_strategy=org.hibernate.cfg.ImprovedNamingStrategy

实体类

@Entity
@Table(name = "user")
public class User implements Serializable {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "id")
    private Long id;
    @Column(name = "username")
    private String username;
    @Column(name = "password")
    private String password;
    @Column(name = "name")
    private String name;

     //setter和getter方法... ...
}

映射接口类

public interface UserRepository extends JpaRepository<User,Long>{
    public List<User> findAll();
}

编写测试类

@RunWith(SpringRunner.class)
@SpringBootTest(classes=MySpringBootApplication.class)
public class JpaTest {

    @Autowired
    private UserRepository userRepository;

    @Test
    public void test(){
        List<User> users = userRepository.findAll();
        System.out.println(users);
    }

}

SpringBoot整合Redis

导入依赖坐标

<!-- 配置使用redis启动器 -->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>

application.properties中配置数据库和Redis的相关属性

#Redis
spring.redis.host=127.0.0.1
spring.redis.port=6379

注入RedisTemplate测试redis操作

@RunWith(SpringRunner.class)
@SpringBootTest(classes = SpringbootJpaApplication.class)
public class RedisTest {

    @Autowired
    private UserRepository userRepository;

    @Autowired
    private RedisTemplate<String, String> redisTemplate;

    @Test
    public void test() throws JsonProcessingException {
        //从redis缓存中获得指定的数据
        String userListData = redisTemplate.boundValueOps("user.findAll").get();
        //如果redis中没有数据的话
        if(null==userListData){
            //查询数据库获得数据
            List<User> all = userRepository.findAll();
            //转换成json格式字符串
            ObjectMapper om = new ObjectMapper();
            userListData = om.writeValueAsString(all);
            //将数据存储到redis中，下次在查询直接从redis中获得数据，不用在查询数据库
            redisTemplate.boundValueOps("user.findAll").set(userListData);
            System.out.println("===============从数据库获得数据===============");
        }else{
            System.out.println("===============从redis缓存中获得数据===============");
        }

        System.out.println(userListData);

    }

}