如何反序列化 Redis 的 ResponseEntity？

Question

我正在我的组织中创建自定义缓存架构，并且必须序列化 ResponseEntity 对象。我正在使用 GenericJackson2JsonRedisSerializer 来序列化对象，但是当它是 ResponseEntity 时它不接受。

我使用 Jackson 序列化器的自定义 redis 模板：

 @Bean
    public RedisTemplate<String, Object> redisTemplate() {
        RedisTemplate<String, Object> template = new CustomRedisTemplate<String, Object>();
        template.setValueSerializer(new GenericJackson2JsonRedisSerializer());
        template.setConnectionFactory(jedisConnectionFactory());
        return template;
    }

我的端点返回 ResponseEntity：

@RequestMapping(value = "/foo")
public ResponseEntity<String> foo() {
    return new ResponseEntity<>("bar", HttpStatus.OK);
}

错误日志：

Could not read JSON: Can not construct instance of org.springframework.http.ResponseEntity: no suitable constructor found, can not deserialize from Object value (missing default constructor or creator, or perhaps need to add/enable type information?)
 at [Source: [B@74297a01; line: 1, column: 137] (through reference chain: br.com.stilingue.cloudutilities.cache.CacheItem["value"]); nested exception is com.fasterxml.jackson.databind.JsonMappingException: Can not construct instance of org.springframework.http.ResponseEntity: no suitable constructor found, can not deserialize from Object value (missing default constructor or creator, or perhaps need to add/enable type information?)
 at [Source: [B@74297a01; line: 1, column: 137] (through reference chain: br.com.stilingue.cloudutilities.cache.CacheItem["value"])

在反序列化对象时出现问题，有谁知道我该怎么办？

Answer 1

尝试在返回语句中添加类型信息：

return new ResponseEntity<String>("bar", HttpStatus.OK);