SpringBoot整合Mybatis
添加依赖
代码语言：javascript复制<!--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
代码语言：javascript复制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
代码语言：javascript复制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
代码语言：javascript复制@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
代码语言：javascript复制<?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
代码语言：javascript复制#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
代码语言：javascript复制@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
代码语言：javascript复制<!--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
代码语言：javascript复制@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
代码语言：javascript复制<!-- 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
代码语言：javascript复制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
代码语言：javascript复制@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
代码语言：javascript复制public interface UserRepository extends JpaRepository<User,Long>{
public List<User> findAll();
}编写测试类
代码语言：javascript复制@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
代码语言：javascript复制<!-- 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
代码语言：javascript复制#Redis
spring.redis.host=127.0.0.1
spring.redis.port=6379注入RedisTemplate测试redis操作
代码语言：javascript复制@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);
}
}
