存放redis异常Could not write JSON: Java 8 date/time type `java.time.LocalDateTime处理

东来东往ol2023-12-16 14:41

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1.首先需要maven引入
<dependency>
            <artifactId>jackson-datatype-jsr310</artifactId>
            <groupId>com.fasterxml.jackson.datatype</groupId>
            <version>2.15.3</version>
 </dependency>

2.示例代码如下

java 复制代码

  private RedisTemplate<String, Object> serializer(RedisTemplate<String, Object> redisTemplate) {
        // LocalDate序列化
        ObjectMapper mapper = new ObjectMapper();
        JavaTimeModule javaTimeModule = new JavaTimeModule();
        // 设置序列化格式
        javaTimeModule.addSerializer(LocalDateTime.class,
                new LocalDateTimeSerializer(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")));
        mapper.registerModule(javaTimeModule);
        // 使用 FastJsonRedisSerializer 来序列化和反序列化redis 的 value的值
        Jackson2JsonRedisSerializer<Object> fastJsonRedisSerializer = new Jackson2JsonRedisSerializer<>(mapper,Object.class);
        // key 的 String 序列化采用 StringRedisSerializer
        StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();
        redisTemplate.setKeySerializer(stringRedisSerializer);
        redisTemplate.setHashKeySerializer(stringRedisSerializer);
        // value 的值序列化采用 fastJsonRedisSerializer
        redisTemplate.setValueSerializer(fastJsonRedisSerializer);
        redisTemplate.setHashValueSerializer(fastJsonRedisSerializer);

        redisTemplate.afterPropertiesSet();
        return redisTemplate;
    }