- 首先创建一个SpringBoot的项目,然后在pom.xml文件中加上redis的依赖。
org.springframework.boot
spring-boot-starter-web
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!--redis-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
<!--spring2.x集成redis 所需common-pool2,这个是整合SpringBoot连接池的部分-->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-pool2</artifactId>
<version>2.6.0</version>
</dependency>
```
```
2. 在SpringBoot中添加redis的配置文件,配置文件的内容主要有redis所在的服务器地址,端口号,最大的连接数量,数据库数量等。
#redis服务器地址
spring.redis.host=127.0.0.1
#redis服务器连接端口
spring.redis.port=6379
#Redis数据库索引(默认是0)
spring.redis.database=0
#连接超时时间(毫秒)
spring.redis.timeout=1800000
#连接池最大连接数(使用负值表示没有限制)
spring.redis.lettuce.pool.max-active=20
#最大阻塞等待时间(负数表示没有等待时间)
spring.redis.lettuce.pool.max-wait=-1
#连接池中的最大控线连接
spring.redis.lettuce.pool.max-idle=5
#连接池中最小空闲时间
spring.redis.lettuce.pool.min-idle=0
- 添加Redis的配置类,SpringBoot在项目启动加载的时候会加载配置类
package com.gao.peng.springboot_redis.config;
import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializationContext;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;
import java.time.Duration;
@EnableCaching//表示开启缓存
@Configuration
public class RedisConfig extends CachingConfigurerSupport {
@Bean//相当于new一个对象,new一个RedisTemplate
public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {
//在这个里面是设置基本内容。例如一些格式
RedisTemplate<String, Object> template = new RedisTemplate<>();
RedisSerializer<String> redisSerializer = new StringRedisSerializer();
Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
ObjectMapper om = new ObjectMapper();
om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
jackson2JsonRedisSerializer.setObjectMapper(om);
template.setConnectionFactory(factory);
//key序列化方式
template.setKeySerializer(redisSerializer);
//value序列化
template.setValueSerializer(jackson2JsonRedisSerializer);
//value hashmap序列化
template.setHashValueSerializer(jackson2JsonRedisSerializer);
return template;
}
@Bean//设置缓存管理
public CacheManager cacheManager(RedisConnectionFactory factory) {
RedisSerializer<String> redisSerializer = new StringRedisSerializer();
Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
//解决查询缓存转换异常的问题
ObjectMapper om = new ObjectMapper();
om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
jackson2JsonRedisSerializer.setObjectMapper(om);
// 配置序列化(解决乱码的问题),过期时间600秒
RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig()
.entryTtl(Duration.ofSeconds(600))
.serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(redisSerializer))
.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(jackson2JsonRedisSerializer))
.disableCachingNullValues();
RedisCacheManager cacheManager = RedisCacheManager.builder(factory)
.cacheDefaults(config)
.build();
return cacheManager;
}
}
我们在使用redis的时候,就是去使用RedisTemplate,然后调用其中集成的方法,来实现redis的相关操作。 如有错误请大佬指出。