redis配置和工具類

翎刿發表於2024-11-14
Redis

依賴

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

序列化配置類

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 {
    //自定義序列化，反序列化物件

public RedisSerializer jsonSerializer(){
    Jackson2JsonRedisSerializer serializer &#61;new Jackson2JsonRedisSerializer(Object.class);
    //基於此物件進行序列化的方式
    ObjectMapper objectMapper &#61; new ObjectMapper();



//表示get方法使用此序列化 //表示全部許可權的方法可以被序列化，預設public objectMapper.setVisibility(PropertyAccessor.GETTER, JsonAutoDetect.Visibility.ANY);

//修改序列化儲存型別，對想序列化會將物件的型別儲存到redis資料庫

//假如沒有這個配置，redis儲存時不儲存型別，反序列化預設儲存到map

objectMapper.activateDefaultTyping(objectMapper.getPolymorphicTypeValidator(),

ObjectMapper.DefaultTyping.NON_FINAL,//啟用序列化型別儲存

JsonTypeInfo.As.PROPERTY);//表示型別會以json物件屬性形 式儲存


    //物件屬性為空時&#xff0c;不進行序列化儲存
    objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);

    serializer.setObjectMapper(objectMapper);
    return  serializer;
}

&#64;Bean
public RedisTemplate&lt;Object, Object&gt; redisTemplate(RedisConnectionFactory redisConnectionFactory) {
    RedisTemplate&lt;Object, Object&gt; template &#61; new RedisTemplate();
    template.setConnectionFactory(redisConnectionFactory);
    //字串型別的資料的鍵為RedisSerializer序列化方式
    template.setKeySerializer(RedisSerializer.string());
    template.setHashKeySerializer(RedisSerializer.string());
    //字串型別的資料的值的序列化方式為自定義
    template.setValueSerializer(jsonSerializer());
    template.setHashValueSerializer(jsonSerializer());
    //spring規範中假如修改bean物件的預設特性,建議呼叫一下
    template.afterPropertiesSet();
    return template;
}



}

RedisTemplate 工具類

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 {

//自定義序列化，反序列化物件


public RedisSerializer jsonSerializer(){
    Jackson2JsonRedisSerializer serializer =new Jackson2JsonRedisSerializer(Object.class);
    //基於此物件進行序列化的方式
    ObjectMapper objectMapper = new ObjectMapper();



//表示get方法使用此序列化 //表示全部許可權的方法可以被序列化，預設public

objectMapper.setVisibility(PropertyAccessor.GETTER, JsonAutoDetect.Visibility.ANY);


    //修改序列化儲存型別，對想序列化會將物件的型別儲存到redis資料庫
    //假如沒有這個配置，redis儲存時不儲存型別，反序列化預設儲存到map
    objectMapper.activateDefaultTyping(objectMapper.getPolymorphicTypeValidator(),
            ObjectMapper.DefaultTyping.NON_FINAL,//啟用序列化型別儲存
            JsonTypeInfo.As.PROPERTY);//表示型別會以json物件屬性形 式儲存

    //物件屬性為空時，不進行序列化儲存
    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);
    //字串型別的資料的鍵為RedisSerializer序列化方式
    template.setKeySerializer(RedisSerializer.string());
    template.setHashKeySerializer(RedisSerializer.string());
    //字串型別的資料的值的序列化方式為自定義
    template.setValueSerializer(jsonSerializer());
    template.setHashValueSerializer(jsonSerializer());
    //spring規範中假如修改bean物件的預設特性,建議呼叫一下
    template.afterPropertiesSet();
    return template;
}



}

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