在springboot中整合redis:
1.先导入redis的maven的依赖。代码如下:
<!--redis包-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
2.在application.yml中加入配置:
spring:
redis:
database: 0
host: 127.0.0.1
port: 6379
password: #有密码的填密码,默认没有
3.添加RedisConfig 配置类:
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;
@Configuration
@EnableCaching
public class RedisConfig {
@Autowired
private ObjectMapper objectMapper;
/**
* 自定义springSessionDefaultRedisSerializer对象,将会替代默认的SESSION序列化对象。
* 默认是JdkSerializationRedisSerializer,缺点是需要类实现Serializable接口。
* 并且在反序列化时如果异常会抛出SerializationException异常,
* 而SessionRepositoryFilter又没有处理异常,故如果序列化异常时就会导致请求异常
*/
@Bean(name = "springSessionDefaultRedisSerializer")
public GenericJackson2JsonRedisSerializer getGenericJackson2JsonRedisSerializer() {
return new GenericJackson2JsonRedisSerializer();
}
/**
* JacksonJsonRedisSerializer和GenericJackson2JsonRedisSerializer的区别:
* GenericJackson2JsonRedisSerializer在json中加入@class属性,类的全路径包名,方便反系列化。
* JacksonJsonRedisSerializer如果存放了List则在反系列化的时候,
* 如果没指定TypeReference则会报错java.util.LinkedHashMap cannot be cast。
*/
@Bean
public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory connectionFactory) {
RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
redisTemplate.setConnectionFactory(connectionFactory);
// 使用Jackson2JsonRedisSerialize 替换默认序列化
Jackson2JsonRedisSerializer jackson2JsonRedisSerializer =
new Jackson2JsonRedisSerializer(Object.class);
jackson2JsonRedisSerializer.setObjectMapper(objectMapper);
// 设置value的序列化规则和 key的序列化规则
redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);
redisTemplate.setKeySerializer(new StringRedisSerializer());
redisTemplate.setHashKeySerializer(jackson2JsonRedisSerializer);
redisTemplate.setHashValueSerializer(jackson2JsonRedisSerializer);
redisTemplate.setDefaultSerializer(jackson2JsonRedisSerializer);
redisTemplate.setEnableDefaultSerializer(true);
redisTemplate.afterPropertiesSet();
return redisTemplate;
}
}
完成上述操作,恭喜完成Redis在项目中的配置!!!
注意:本文归作者所有,未经作者允许,不得转载