解决:Unexpected token (START_OBJECT), expected START_ARRAY: need JSON Array to contain As.WRAPPER_ARRA

1. redisTemplate 报错:

Caused by: com.fasterxml.jackson.databind.JsonMappingException:
 Unexpected token (START_OBJECT), expected START_ARRAY: 
need JSON Array to contain As.WRAPPER_ARRAY type information for class java.lang.Object

2. 报错代码行:

        Object dd = valueOperations.get(key);

3. 解决,找到配置类,注释掉这一行:

  om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL); 

PS:对应配置方法完整代码 :

   /**
     * retemplate相关配置
     *
     * @param factory
     * @return
     */
    @Bean
    public RedisTemplate redisTemplate(RedisConnectionFactory factory) {

        RedisTemplate template = new RedisTemplate<>();
        // 配置连接工厂
        template.setConnectionFactory(factory);

        //使用Jackson2JsonRedisSerializer来序列化和反序列化redis的value值(默认使用JDK的序列化方式)
        Jackson2JsonRedisSerializer jacksonSeial = new Jackson2JsonRedisSerializer(Object.class);

        ObjectMapper om = new ObjectMapper();
        // 指定要序列化的域,field,get和set,以及修饰符范围,ANY是都有包括private和public
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);

        // 指定序列化输入的类型,类必须是非final修饰的,final修饰的类,比如String,Integer等会跑出异常
//        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL); // 保留这行会报错:Unexpected token (VALUE_STRING)
        jacksonSeial.setObjectMapper(om);

        // 值采用json序列化
        template.setValueSerializer(jacksonSeial);
        //使用StringRedisSerializer来序列化和反序列化redis的key值
        template.setKeySerializer(new StringRedisSerializer());

        // 设置hash key 和value序列化模式
        template.setHashKeySerializer(new StringRedisSerializer());
        template.setHashValueSerializer(jacksonSeial);
        template.afterPropertiesSet();

        redisTemplate = template; // 注入失败,故直接用属性来获取
        return template;
    }

 

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