redis配置和工具类

依赖

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-redis</artifactId>
    <version>2.5.14</version>
</dependency>

序列化配置类

package com.syh.pdd.configuration;
import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.annotation.JsonTypeInfo;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.context.annotation.Bean;
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.RedisSerializer;
@Configuration
public class RedisConfig {
    //自定义序列化，反序列化对象
public RedisSerializer jsonSerializer(){
    Jackson2JsonRedisSerializer serializer =new Jackson2JsonRedisSerializer(Object.class);
    //基于此对象进行序列化的方式
    ObjectMapper objectMapper = new ObjectMapper();

//表示get方法使用此序列化 //表示全部权限的方法可以被序列化，默认public objectMapper.setVisibility(PropertyAccessor.GETTER, JsonAutoDetect.Visibility.ANY);

//修改序列化存储类型，对想序列化会将对象的类型存储到redis数据库

//假如没有这个配置，redis储存时不储存类型，反序列化默认存储到map

objectMapper.activateDefaultTyping(objectMapper.getPolymorphicTypeValidator(),

ObjectMapper.DefaultTyping.NON_FINAL,//激活序列化类型储存

JsonTypeInfo.As.PROPERTY);//表示类型会以json对象属性形 式存储
    //对象属性为空时，不进行序列化储存
    objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);

    serializer.setObjectMapper(objectMapper);
    return  serializer;
}

@Bean
public RedisTemplate<Object, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) {
    RedisTemplate<Object, Object> template = new RedisTemplate();
    template.setConnectionFactory(redisConnectionFactory);
    //字符串类型的数据的键为RedisSerializer序列化方式
    template.setKeySerializer(RedisSerializer.string());
    template.setHashKeySerializer(RedisSerializer.string());
    //字符串类型的数据的值的序列化方式为自定义
    template.setValueSerializer(jsonSerializer());
    template.setHashValueSerializer(jsonSerializer());
    //spring规范中假如修改bean对象的默认特性,建议调用一下
    template.afterPropertiesSet();
    return template;
}

}

RedisTemplate 工具类

package com.syh.pdd.configuration;
import com.fasterxml.jackson.annotation.JsonAutoDetect;

import com.fasterxml.jackson.annotation.JsonInclude;

import com.fasterxml.jackson.annotation.JsonTypeInfo;

import com.fasterxml.jackson.annotation.PropertyAccessor;

import com.fasterxml.jackson.databind.ObjectMapper;

import org.springframework.context.annotation.Bean;

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.RedisSerializer;
@Configuration

public class RedisConfig {

//自定义序列化，反序列化对象
public RedisSerializer jsonSerializer(){
    Jackson2JsonRedisSerializer serializer =new Jackson2JsonRedisSerializer(Object.class);
    //基于此对象进行序列化的方式
    ObjectMapper objectMapper = new ObjectMapper();

//表示get方法使用此序列化 //表示全部权限的方法可以被序列化，默认public

objectMapper.setVisibility(PropertyAccessor.GETTER, JsonAutoDetect.Visibility.ANY);
    //修改序列化存储类型，对想序列化会将对象的类型存储到redis数据库
    //假如没有这个配置，redis储存时不储存类型，反序列化默认存储到map
    objectMapper.activateDefaultTyping(objectMapper.getPolymorphicTypeValidator(),
            ObjectMapper.DefaultTyping.NON_FINAL,//激活序列化类型储存
            JsonTypeInfo.As.PROPERTY);//表示类型会以json对象属性形 式存储

    //对象属性为空时，不进行序列化储存
    objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);

    serializer.setObjectMapper(objectMapper);
    return  serializer;
}

@Bean
public RedisTemplate<Object, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) {
    RedisTemplate<Object, Object> template = new RedisTemplate();
    template.setConnectionFactory(redisConnectionFactory);
    //字符串类型的数据的键为RedisSerializer序列化方式
    template.setKeySerializer(RedisSerializer.string());
    template.setHashKeySerializer(RedisSerializer.string());
    //字符串类型的数据的值的序列化方式为自定义
    template.setValueSerializer(jsonSerializer());
    template.setHashValueSerializer(jsonSerializer());
    //spring规范中假如修改bean对象的默认特性,建议调用一下
    template.afterPropertiesSet();
    return template;
}

}