key亂碼問(wèn)題
因redis默認(rèn)使用JdkSerializationRedisSerializer來(lái)進(jìn)行序列化，造成key是亂碼，如下：
keys '*!report:flag:phon*'
1) "\xac\xed\x00\x05t\x00!report:flag:phone_156464"
2) "\xac\xed\x00\x05t\x00!report:flag:phone_198946"
3) "\xac\xed\x00\x05t\x00!report:flag:phone_183302"
解決key亂碼
private RedisTemplate redisTemplate;
@Autowired(required = false)
public void setRedisTemplate(RedisTemplate redisTemplate) {
RedisSerializer stringSerializer = new StringRedisSerializer();
redisTemplate.setKeySerializer(stringSerializer);
redisTemplate.setValueSerializer(stringSerializer);
redisTemplate.setHashKeySerializer(stringSerializer);
redisTemplate.setHashValueSerializer(stringSerializer);
this.redisTemplate = redisTemplate;
}
清理亂碼key
官方不支持 del '*keys'方式模糊/批量刪除key。但是keys命令支持模糊匹配，所以采取以下方式：
方式1：可刪除正常key，無(wú)法刪除亂碼key
redis-cli -h 192.168.1.21 -a password -n 2 --scan --pattern '*!report:flag:phon*' | xargs redis-cli -h 192.168.1.21 -a password -n 2 DEL
方式2：成功刪除
del "\xac\xed\x00\x05t\x00!report:flag:phone_183302" "\xac\xed\x00\x05t\x00!report:flag:phone_198946"
補(bǔ)充知識(shí)：redis key和value的亂碼問(wèn)題解決，含日期轉(zhuǎn)化格式問(wèn)題
在項(xiàng)目中，遇到的問(wèn)題是redis的key和value出現(xiàn)的亂碼問(wèn)題：在這里插入圖片描述
而原本的內(nèi)容為下：
{
"status":"success",
"data":{
"id":3,
"title":"花林",
"price":99,
"stock":81,
"description":"美女一只",
"sales":17,
"imgUrl":"https://xiaolei1996.oss-cn-shanghai.aliyuncs.com/blog/title/we1.jpg",
"promoStatus":2,
"promoPrice":50,
"promoId":1,
"startDate":"2020-03-23 21:50:59"
}
}
原因： 是因?yàn)楹蛂edis內(nèi)部的編碼協(xié)議出現(xiàn)了問(wèn)題，所以需要改進(jìn)。spring提供了一個(gè)優(yōu)化方案。springboot的redisTemplate改進(jìn)。
@Component
@EnableRedisHttpSession(maxInactiveIntervalInSeconds = 3600)
public class RedisConfig {
@Bean
public RedisTemplate redisTemplate(RedisConnectionFactory factory){
RedisTemplate redisTemplate = new RedisTemplate();
redisTemplate.setConnectionFactory(factory);
//首先解決key的序列化問(wèn)題
StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();
redisTemplate.setKeySerializer(stringRedisSerializer);
//解決value的序列化問(wèn)題
Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);
return redisTemplate;
}
}
比之前好了，但是還有點(diǎn)小問(wèn)題，json的數(shù)據(jù)比以前多了，這是因?yàn)槿掌诘霓D(zhuǎn)化出現(xiàn)問(wèn)題，這塊的知識(shí)觸及盲區(qū)，就先把解決方案寫下面，以后有時(shí)間在研究。
public class JodaDateTimeJsonSerializer extends JsonSerializerDateTime> {
@Override
public void serialize(DateTime value, JsonGenerator gen, SerializerProvider serializers) throws IOException {
gen.writeString(value.toString("yyyy-MM-dd HH:mm:ss"));
}
}
public class JodaDateTimeJsonDeserializer extends JsonDeserializerDateTime> {
@Override
public DateTime deserialize(JsonParser p, DeserializationContext ctxt
) throws IOException, JsonProcessingException {
String dateString= p.readValueAs(String.class);
DateTimeFormatter dateTimeFormatter = DateTimeFormat.forPattern("yyyy-MM-dd HH:mm:ss");
return DateTime.parse(dateString,dateTimeFormatter);//轉(zhuǎn)成
}
}
@Component
@EnableRedisHttpSession(maxInactiveIntervalInSeconds = 3600)
public class RedisConfig {
@Bean
public RedisTemplate redisTemplate(RedisConnectionFactory factory){
RedisTemplate redisTemplate = new RedisTemplate();
redisTemplate.setConnectionFactory(factory);
//首先解決key的序列化問(wèn)題
StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();
redisTemplate.setKeySerializer(stringRedisSerializer);
//解決value的序列化問(wèn)題
Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);
//改進(jìn)日期轉(zhuǎn)化問(wèn)題
ObjectMapper objectMapper = new ObjectMapper();
SimpleModule simpleModule = new SimpleModule();
simpleModule.addSerializer(DateTime.class,new JodaDateTimeJsonSerializer());
simpleModule.addDeserializer(DateTime.class,new JodaDateTimeJsonDeserializer());
//解決反序列化問(wèn)題 objectMapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
objectMapper.registerModule(simpleModule);
jackson2JsonRedisSerializer.setObjectMapper(objectMapper);
redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);
return redisTemplate;
}
}
最后終于出現(xiàn)了預(yù)期的效果
以上這篇redis 解決key的亂碼問(wèn)題,并清理詳解就是小編分享給大家的全部?jī)?nèi)容了，希望能給大家一個(gè)參考，也希望大家多多支持腳本之家。
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