redis统一给key加上前缀实现

liulin

2024-11-24 1e3764d82bd9b77a89a7fb88d60dd411ecd4f11b

redis统一给key加上前缀实现

 src/main/java/com/lunhan/xxx/common/cache/CacheManagerConfig.java

@@ -8,9 +8,9 @@
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.serializer.GenericJackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializationContext;
import org.springframework.data.redis.serializer.StringRedisSerializer;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.serializer.*;

import java.time.Duration;

@@ -23,7 +23,7 @@
                //设置24小时过期
                .entryTtl(Duration.ofMillis(ConstantFactory.TIME_LEN_24H))
                //设置key的序列化方式
                .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(new StringRedisSerializer()))
                .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(new RedisKeySerializer()))
                //设置值的序列化方式
                .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(new GenericJackson2JsonRedisSerializer()));

@@ -34,4 +34,26 @@
        //返回构造的cacheManager
        return builder.transactionAware().cacheDefaults(config).build();
    }

    @Bean
    public StringRedisTemplate stringRedisTemplate(RedisConnectionFactory redisConnectionFactory) {
        StringRedisTemplate stringRedisTemplate = new StringRedisTemplate(redisConnectionFactory);
        stringRedisTemplate.setKeySerializer(new RedisKeySerializer());
        return stringRedisTemplate;
    }

    @Bean
    public RedisTemplate<String, Object> objectRedisTemplate(RedisConnectionFactory redisConnectionFactory) {
        RedisSerializer<String> serializer = new StringRedisSerializer();
        Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<>(Object.class);
        RedisTemplate<String, Object> template = new RedisTemplate<>();
        template.setConnectionFactory(redisConnectionFactory);
        template.setKeySerializer(new RedisKeySerializer());
        template.setValueSerializer(jackson2JsonRedisSerializer);
        template.setHashKeySerializer(serializer);
        template.setHashValueSerializer(jackson2JsonRedisSerializer);
        template.afterPropertiesSet();

        return template;
    }
}

 src/main/java/com/lunhan/xxx/common/cache/RedisKeySerializer.java

对比新文件
@@ -0,0 +1,30 @@
package com.lunhan.xxx.common.cache;

import com.lunhan.xxx.common.config.SysConfig;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.lang.Nullable;

import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;

public class RedisKeySerializer implements RedisSerializer<String> {
    private static final Charset charset = StandardCharsets.UTF_8;

    /*
     * (non-Javadoc)
     * @see org.springframework.data.redis.serializer.RedisSerializer#deserialize(byte[])
     */
    @Override
    public String deserialize(@Nullable byte[] bytes) {
        return (bytes == null ? null : new String(bytes, charset).replaceFirst(SysConfig.redis.getKeyPrefix(), ""));
    }

    /*
     * (non-Javadoc)
     * @see org.springframework.data.redis.serializer.RedisSerializer#serialize(java.lang.Object)
     */
    @Override
    public byte[] serialize(@Nullable String string) {
        return (string == null ? null : (SysConfig.redis.getKeyPrefix() + string).getBytes(charset));
    }
}

 src/main/java/com/lunhan/xxx/common/config/RedisConfig.java

对比新文件
@@ -0,0 +1,18 @@
package com.lunhan.xxx.common.config;

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;

@Component
@ConfigurationProperties(prefix = "spring.redis")
public class RedisConfig {
    private String keyPrefix;

    public String getKeyPrefix() {
        return keyPrefix;
    }

    public void setKeyPrefix(String keyPrefix) {
        this.keyPrefix = keyPrefix;
    }
}

 src/main/java/com/lunhan/xxx/common/config/SysConfig.java

@@ -9,6 +9,7 @@
    public static JWTConfig jwt = SpringUtil.getBean(JWTConfig.class);
    public static JdbcSetConfig jdbc = SpringUtil.getBean(JdbcSetConfig.class);
    public static FileConfig file = SpringUtil.getBean(FileConfig.class);
    public static RedisConfig redis = SpringUtil.getBean(RedisConfig.class);

    public static String getTokenHeader() {
        return jwt.getTokenHeader();

 src/main/resources/application.yml

@@ -12,14 +12,16 @@
      enabled: true #开启文件上传
      max-file-size: 10MB #限制文件上传大小为10M
  mail:
    password: ennnntqxzijsdjdh
    username: 2413500195@qq.com
    password: 123456
    username: 123456@qq.com
    host: smtp.qq.com
    default-encoding: UTF-8
  redis:
    keyPrefix: xxx_yyy_ # redis缓存key统一加上前缀

jwt:
  token_header: Token #JWT存储的请求头
  secret: xxx-lunhan-secret #hardware-lunhan-secret #JWT加解密密钥（所有硬件项目通用，公用一个用户中心登录，其他项目不写登录接口，直接用token）
  secret: xxx-yyy-secret #hardware-lunhan-secret #JWT加解密密钥（所有硬件项目通用，公用一个用户中心登录，其他项目不写登录接口，直接用token）
  expiration: 15811200 #JWT的超期限时间(60*60*24*183) 单位：秒
  head: 'Bearer '  #JWT负载中拿到开头