如何使用簡單Json庫解析這個json文件，格式是這樣的：謝謝我的文件看起來像這樣：里面有Json數組的json文件; {"data":[{"host":"hostname1","port":2049,"open":"false", "info":" "}, {"host":"hostname1","port":2049,"open":"false", "info":" "}, {"host":"hostname2","port":2049,"open":"false", "info":" "}, {"host":"hostname3","port":2049,"open":"false", "info":" "}, {"host":"hostname4","port":443,"open":"false", "info":" "}, {"host":"hostname5","port":443,"open":"false","info":" "}, {"host":"hostname6","port":61208,"open":"false","info":" "}, {"host":"hostname7","port":139,"open":"false","info":" "}]} 此時此刻我的代碼：JSONParser parser = new JSONParser(); try { Object obj = parser.parse(new FileReader("D:/file.json")); JSONArray jsonObject = (JSONArray) obj; JSONObject arr = (JSONObject) jsonObject.get(0); JSONArray arguments = (JSONArray) arr.get("arguments"); System.out.println("arguments>>>>>>>>> "+arguments); for(int i = 0 ; i< arguments.size() ;i++){ JSONObject object = (JSONObject) arguments.get(i); System.out.println(object); return object; } } catch (Exception e) { e.printStackTrace(); } return null;我手動做了這個：//data JSONObject obj1 = new JSONObject(); obj1.put("host", "mkyong.com"); obj1.put("port", "555"); obj1.put("open", "false"); obj1.put("info", ""); JSONObject obj2 = new JSONObject(); obj2.put("host", "mkyong.com"); obj2.put("port", "555"); obj2.put("open", "false"); obj2.put("info", ""); JSONArray list = new JSONArray(); list.add(obj2); JSONObject datajson = new JSONObject(); datajson.put("data", list);
1 回答
波斯汪
TA貢獻1811條經驗 獲得超4個贊
它看起來像一個舊的谷歌圖書館。我認為您需要切換到 .下面是演示如何讀取給定 .這里的鍵是原始對象將對象數組作為鍵的值。JSON.simpleGSONJSONJSONJSONdata
import java.io.FileReader;
import java.util.Iterator;
import org.json.simple.JSONArray;
import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;
/**
*
* @author blj0011
*/
public class JsonSimpleReaderExample
{
public static void main(String[] args)
{
JSONParser parser = new JSONParser();
try {
Object obj = parser.parse(new FileReader("file.json"));
JSONObject jsonObject = (JSONObject) obj;
JSONArray array = (JSONArray) jsonObject.get("data");
Iterator<JSONObject> iterator = array.iterator();
while (iterator.hasNext()) {
JSONObject jsonObjectInJsonArray = (JSONObject) iterator.next();
System.out.println(jsonObjectInJsonArray.get("host"));
}
}
catch (Exception ex) {
System.out.println(ex.toString());
}
}
}
輸出：
hostname1
hostname1
hostname2
hostname3
hostname4
hostname5
hostname6
hostname7
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