java解析json的操作

import java.io.FileNotFoundException;
import java.io.FileReader;

import com.google.gson.JsonArray;
import com.google.gson.JsonIOException;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import com.google.gson.JsonSyntaxException;

public class ReadJSON {
    public static void main(String args[]){
        try {

            JsonParser parser=new JsonParser();  //创建JSON解析器

            //JsonObject result=parser.get("result").getAsJsonObject();

            JsonObject object=(JsonObject) parser.parse(new FileReader("weather.json"));  //创建JsonObject对象
             //+++++++++++++++++++++++++++是json中的主变量+++++++++++++++++++++++++++
            System.out.println("resultcode"+object.get("resultcode").getAsInt());
            System.out.println("reason"+object.get("reason").getAsString());
            //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

            //+++++++++++++++++++++到主json的目录result中   包括 迭代json object 和json 数组
            JsonObject result1=object.get("result").getAsJsonObject();

            //++++++++++++++++++进入到result中的子object json之中++++++++++++++++++++++++++++++++++++++++++++++++++
            JsonObject today=result1.get("today").getAsJsonObject();
            System.out.println("temperature:"+today.get("temperature").getAsString());
            System.out.println("weather:"+today.get("weather").getAsString());
            System.out.println("city"+today.get("city").getAsString());
            //today下面的迭代weather_id
            JsonObject weather_id=today.get("weather_id").getAsJsonObject();
            System.out.println("favalue:"+weather_id.get("fa").getAsString());
            //+++++++++++++++++通过result1 找到 存储数据的子目录   ARRAY    future，
            JsonArray array=result1.get("future").getAsJsonArray();    //得到为json的数组
            for(int i=0;i<array.size();i++){
                System.out.println("---------------");
                JsonObject subObject=array.get(i).getAsJsonObject();
                System.out.println("id="+subObject.get("temperature").getAsString());
                System.out.println("name="+subObject.get("weather").getAsString());
                System.out.println("week="+subObject.get("week").getAsString());
                System.out.println("wind"+subObject.get("wind").getAsString());
                //System.out.println("ide="+subObject.get("ide").getAsString());
            }

        } catch (JsonIOException e) {
            e.printStackTrace();
        } catch (JsonSyntaxException e) {
            e.printStackTrace();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
    }
}

他所解析的json为

{
  "resultcode": "200",
  "reason": "successed!",
  "result": {
    "sk": {
      "temp": "24",
      "wind_direction": "西南风",
      "wind_strength": "2级",
      "humidity": "51%",
      "time": "10:11"
    },
    "today": {
      "temperature": "16℃~27℃",
      "weather": "阴转多云",
      "weather_id": {
        "fa": "02",
        "fb": "01"
      },
      "wind": "西南风3-4 级",
      "week": "星期四",
      "city": "滨州",
      "date_y": "2015年06月04日",
      "dressing_index": "舒适",
      "dressing_advice": "建议着长袖T恤、衬衫加单裤等服装。年老体弱者宜着针织长袖衬衫、马甲和长裤。",
      "uv_index": "最弱",
      "comfort_index": "",
      "wash_index": "较适宜",
      "travel_index": "",
      "exercise_index": "较适宜",
      "drying_index": ""
    },
    "future": [
      {
        "temperature": "16℃~27℃",
        "weather": "阴转多云",
        "weather_id": {
          "fa": "02",
          "fb": "01"
        },
        "wind": "西南风3-4 级",
        "week": "星期四",
        "date": "20150604"
      },
      {
        "temperature": "20℃~32℃",
        "weather": "多云转晴",
        "weather_id": {
          "fa": "01",
          "fb": "00"
        },
        "wind": "西风3-4 级",
        "week": "星期五",
        "date": "20150605"
      },
      {
        "temperature": "23℃~35℃",
        "weather": "多云转阴",
        "weather_id": {
          "fa": "01",
          "fb": "02"
        },
        "wind": "西南风3-4 级",
        "week": "星期六",
        "date": "20150606"
      },
      {
        "temperature": "20℃~33℃",
        "weather": "多云",
        "weather_id": {
          "fa": "01",
          "fb": "01"
        },
        "wind": "北风微风",
        "week": "星期日",
        "date": "20150607"
      },
      {
        "temperature": "22℃~34℃",
        "weather": "多云",
        "weather_id": {
          "fa": "01",
          "fb": "01"
        },
        "wind": "西南风3-4 级",
        "week": "星期一",
        "date": "20150608"
      },
      {
        "temperature": "22℃~33℃",
        "weather": "阴",
        "weather_id": {
          "fa": "02",
          "fb": "02"
        },
        "wind": "西南风3-4 级",
        "week": "星期二",
        "date": "20150609"
      },
      {
        "temperature": "22℃~33℃",
        "weather": "多云",
        "weather_id": {
          "fa": "01",
          "fb": "01"
        },
        "wind": "南风3-4 级",
        "week": "星期三",
        "date": "20150610"
      }
    ]
  }
}