1、导包：import com.alibaba.fastjson.JSONObject;
maven:
<groupId>com.alibaba
<artifactId>fastjson
<version>1.2.60
</dependency>
String result ="{"key":{"key1":"value:"}}";
JSONObject obj = JSONObject.parseObject(result);
JSONObject key = (JSONObject) obj.get("key");
String value = key.getString("key1");
