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

1. redisTemplate 報錯:java

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. 報錯代碼行:redis

Object dd = valueOperations.get(key);

3. 解決,找到配置類,註釋掉這一行:json

om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);

PS:對應配置方法完整代碼 :app

/**
     * retemplate相關配置
     *
     * @param factory
     * @return
     */
    @Bean
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {

        RedisTemplate<String, Object> template = new RedisTemplate<>();
        // 配置鏈接工廠
        template.setConnectionFactory(factory);

        //使用Jackson2JsonRedisSerializer來序列化和反序列化redis的value值(默認使用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,以及修飾符範圍,ANY是都有包括private和public
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);

        // 指定序列化輸入的類型,類必須是非final修飾的,final修飾的類,好比String,Integer等會跑出異常
//        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL); // 保留這行會報錯:Unexpected token (VALUE_STRING)
        jacksonSeial.setObjectMapper(om);

        // 值採用json序列化
        template.setValueSerializer(jacksonSeial);
        //使用StringRedisSerializer來序列化和反序列化redis的key值
        template.setKeySerializer(new StringRedisSerializer());

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

        redisTemplate = template; // 注入失敗,故直接用屬性來獲取
        return template;
    }
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