spring boot整合mybatis、Junit、spring data JPA、redis

1 SpringBoot整合Mybatis

1.1添加mybatis起步依赖

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

1.2添加数据库驱动坐标，MySQL为例

<!-- MySQL连接驱动 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>

1.3添加数据库连接信息，application.properties文件

#DB Configuration:
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=root

1.4创建表与对应的实体类
1.5编写Mapper接口

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

1.6配置Mapper映射文件
1.7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=实体类包名
#加载Mybatis映射文件
mybatis.mapper-locations=classpath:mapper/*Mapper.xml

1.8测试

2.SpringBoot整合Junit

2.1 添加Junit的起步依赖

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

2.1编写测试类

@RunWith(SpringRunner.class)//继承自SpringJUnit4ClassRunner
@SpringBootTest(classes = MySpringBootApplication.class)//指定的是引导类的字节码对象
public class MapperTest {
@Autowired
private UserMapper userMapper;
@Test
public void test() {
List<User> users = userMapper.queryUserList();
System.out.println(users);
}
}

3. SpringBoot整合Spring Data JPA

3.1 添加Spring Data JPA的起步依赖

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>

3.2 添加数据库驱动依赖

<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>

3.3 在application.properties中配置数据库和jpa的相关属性

#DB Configuration:
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=root
#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

3.4 创建实体配置实体

@Entity//声明为实体类
public class User {
@Id// 主键
@GeneratedValue(strategy = GenerationType.IDENTITY)//主键生成策略
private Long id;
// 用户名
private String username;
// 密码
private String password;
// 姓名
private String name;
//此处省略setter和getter方法... ...
}

3.5 编写UserRepository

public interface UserRepository extends JpaRepository<User,Long>{
}

3.6 编写测试类

注意：jdk9需要导入如下坐标

<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.3.0</version>
</dependency>

4. SpringBoot整合Redis

4.1 添加redis的起步依赖

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>

4.2 配置redis的连接信息

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

4.3 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 {
}