GSON：无法正确解析JSON对象

Question

{
 "key1":"someValue",
 "key2":{   
            "anotherKey1":"212586425",
            "anotherKey2":"Martin"
         }
}

Data data = new Gson().fromJson(json, Data.class);

public class Data {

        public String key1;
        public Map key2; //This will break everything.
}

GSON不是在一开始就解析我传递的整个JSON字符串吗？因此，最终，我希望新的数据源是map对象。那可行吗？

Answer 1

让Gson来做这项工作。我将数据定义为

package stackoverflow.questions.q19228349;

public class Data {

    @Override
    public String toString() {
        return "Data [key1=" + key1 + ", key2=" + key2 + "]";
    }
    public String key1;
    public Object key2;

}

然后我可以解析key2:

package stackoverflow.questions.q19228349;

import com.google.gson.Gson;

public class Q19228349 {


    public static void main(String[] args){
    String json =
            "{\"key1\":\"someValue\","+
            "\"key2\":{   "+
            "           \"anotherKey1\":\"212586425\","+
            "           \"anotherKey2\":\"Martin\""+
            "        }"+
            " }";

    String json2 =
            "{\"key1\":\"someValue\","+
            "\"key2\":\"aString\""+
            " }";

        Gson g = new Gson();
        Data d = g.fromJson(json, Data.class); 
        System.out.println("First: " +d);

        Data d2 = g.fromJson(json2, Data.class); 
        System.out.println("Second: "+d2);
    }


}

这就是结果：