json与字符串的转换

对应依赖

<!--  json依赖-->
<dependency>
    <groupId>net.sf.json-lib</groupId>
    <artifactId>json-lib</artifactId>
    <version>2.4</version>
    <classifier>jdk15</classifier>
</dependency>

String转json

JSON1Object jsonObject = JSONObject.fromObject(dicDistrict);

json转String   

JSON.toJSONString(obj/array)       

 Object obj = redisTemplate.opsForValue().get(token);

User user = JSON.parseObject(JSON.toJSONString(obj), User.class);