解析SpringBoot整合SpringDataRedis的过程

Z时代
2024-01-10
分类：综合

Spring-Data-Redis项目（简称SDR）对Redis的Key-Value数据存储操作提供了更高层次的抽象，类似于Spring Framework对JDBC支持一样。

项目主页： http://projects.spring.io/spring-data-redis/

项目文档： http://docs.spring.io/spring-data/redis/docs/1.5.0.RELEASE/reference/html/

本文给大家介绍SpringBoot整合SpringDataRedis的过程。

项目环境：Jdk11.0.2、Redis3.0.0、Centos7

一、安装Redis3.0.0

在Linux下解压redis安装包

进入解压后的目录进行编译

编译完成

将redis安装到指定目录

启动redis

默认端口Port：6379

属于前置启动，会占用整个终端，按Ctrl+C停止

后置启动，将redis.conf复制到redis/bin目录下

修改复制后的配置文件，将no该为yes

Centos7开放端口

启动redis 查看redis是否启动成功

IDEA客户端工具连接redis服务成功

二、整合SpringDataRedis

1.修改pom.xml文件


<?xml version="1.0" encoding="UTF-8"?>
<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>org.example</groupId>
  <artifactId>springboot-redis</artifactId>
  <version>1.0-SNAPSHOT</version>
  <parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.2.6.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>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-data-redis</artifactId>
    </dependency>
<!--    SpringDataRedis2.x已不使用jedis 如需要jedis，需手动导入 -->
    <dependency>
      <groupId>redis.clients</groupId>
      <artifactId>jedis</artifactId>
      <version>3.3.0</version>
    </dependency>
  </dependencies>
</project>

2.创建RedisConfig配置类

jedis中的源码：


/**
 * @Author: kenewstar
 * @Description: Redis配置类
 * @Date:Created in 2020/6/27
 */
@Configuration
public class RedisConfig {
	//连接池
  @Bean
  public JedisPoolConfig jedisPoolConfig(){
    JedisPoolConfig config = new JedisPoolConfig();
    //最大空闲数(默认8)
    config.setMaxIdle(12);
    //最小空闲数(默认0)
    config.setMinIdle(6);
    //最大连接数(默认8)
    config.setMaxTotal(24);
    return config;
  }
  /**
   * SpringDataRedis2.x版本已废弃使用jedis
   * @param config
   * @return
   */
  @Bean
  public JedisConnectionFactory jedisConnectionFactory(JedisPoolConfig config){
    JedisConnectionFactory factory = new JedisConnectionFactory();
    //不推荐使用，SpringDataRedis2.x中已过时
    factory.setPoolConfig(config);
    factory.setHostName("192.168.40.128"); //redis服务的ip
    factory.setPort(6379); //redis服务的端口
    return factory;
  }
	//redis操作类
  @Bean
  public RedisTemplate<String,Object> redisTemplate(JedisConnectionFactory factory){
    RedisTemplate<String,Object> redisTemplate = new RedisTemplate<>();
    redisTemplate.setConnectionFactory(factory);
    //设置key/value的序列化器
    redisTemplate.setKeySerializer(new StringRedisSerializer());
    redisTemplate.setValueSerializer(new StringRedisSerializer());
    return redisTemplate;
  }
}

Redis序列化器

3.创建Redis测试类


/**
 * @Author: kenewstar
 * @Description: 测试redis操作
 * @Date:Created in 2020/6/27
 */
@RunWith(SpringJUnit4ClassRunner.class)
@SpringBootTest(classes = App.class)
public class TestRedisString {
  @Autowired
  private RedisTemplate<String,Object> redisTemplate;
  @Test
  public void set(){
    this.redisTemplate.opsForValue().set("name","muke");
  }
  @Test
  public void get(){
    Object name = this.redisTemplate.opsForValue().get("name");
    System.out.println(name);
  }
}

三、SpringDataRedis存取Java对象

不推荐该种方式存取java对象，会造成空间浪费，使用json字符串格式存取会更好


/**
 * @Author: kenewstar
 * @Description: 测试redis操作
 * @Date:Created in 2020/6/27
 */
@RunWith(SpringJUnit4ClassRunner.class)
@SpringBootTest(classes = App.class)
public class TestRedisString {
  @Autowired
  private RedisTemplate<String,Object> redisTemplate;
  @Test
  public void setObject(){
    User user = new User();
    user.setId(1);
    user.setName("kenewstar");
    user.setAge(21);
    this.redisTemplate.setValueSerializer(new JdkSerializationRedisSerializer());
    this.redisTemplate.opsForValue().set("user",user);
  }
  @Test
  public void getObject(){
    this.redisTemplate.setValueSerializer(new JdkSerializationRedisSerializer());
    User user = (User)this.redisTemplate.opsForValue().get("user");
    System.out.println(user);
  }
}

四、SpringDataRedis存取Json格式的Java对象


/**
 * @Author: kenewstar
 * @Description: 测试redis操作
 * @Date:Created in 2020/6/27
 */
@RunWith(SpringJUnit4ClassRunner.class)
@SpringBootTest(classes = App.class)
public class TestRedisString {
  @Autowired
  private RedisTemplate<String,Object> redisTemplate;
    @Test
  public void setJsonObject(){
    User user = new User();
    user.setId(2);
    user.setName("kenewstar2");
    user.setAge(22);
    this.redisTemplate.setValueSerializer(new Jackson2JsonRedisSerializer<>(User.class));
    this.redisTemplate.opsForValue().set("userJson",user);
  }
  @Test
  public void getJsonObject(){
    this.redisTemplate.setValueSerializer(new Jackson2JsonRedisSerializer<>(User.class));
    User user = (User) this.redisTemplate.opsForValue().get("userJson");
    System.out.println(user);
  }
}

五、SpringDataRedis2.x中的配置

1.创建application.yml全局配置文件

将redis数据库连接信息与连接池信息配置在全局配置文件中

#redis单机应用环境配置

spring:

redis:

host: 192.168.40.128

port: 6379

password: #无密码不配置

database: 0 #数据库索引（0-15）默认为0

timeout: 300s #连接超时时间

#redis连接池配置

jedis:

pool:

max-idle: 16 #最大空闲数(默认8)

min-idle: 4 #最小空闲数(默认0)

max-active: 20 #最大连接数(默认8)

max-wait: 60000ms # 连接池最大阻塞等待时间默认-1ms （-1 :表示没有限制）这里设置1分钟

2.创建RedisConfig配置类


/**
 * @Author: kenewstar
 * @Description: Redis配置类
 * @Date:Created in 2020/6/27
 */
@Configuration
public class RedisConfig {
  @Bean
  public RedisTemplate<String,Object> redisTemplate(RedisConnectionFactory factory){
    RedisTemplate<String,Object> redisTemplate = new RedisTemplate<>();
    redisTemplate.setConnectionFactory(factory);
    redisTemplate.setKeySerializer(new StringRedisSerializer());
    redisTemplate.setValueSerializer(new StringRedisSerializer());
    return redisTemplate;
  }
}