Question

我通过查询URL

获得了JSON数据

http://microblogging.wingnity.com/JSONParsingTutorial/jsonActors

但是当我解析时，我只得到第一组数据，而不是第二组数据，不知道我在哪里弄错了。如何从JSON数组中获取所有节点。谢谢你的帮助。

以下是我的代码：

        /**
         * getting Inbox JSON
         * */
        protected String doInBackground(String... args) {
            // Building Parameters
            List<NameValuePair> params = new ArrayList<NameValuePair>();


            url = "http://microblogging.wingnity.com/JSONParsingTutorial/jsonActors" 


            Log.d(TAG , "URL IS:" + url);
            JSONObject json = jsonParser.makeHttpRequest(url, "GET", params, false);

            Log.d("Parse", "Data : " + json.toString());


            try {

                data = json.getJSONArray("actors");

                    for (int i = 0; i < data.length(); i++) {
                        JSONObject c = data.getJSONObject(i);

                        //Here I am getting all values one by one


                    }




            } catch (JSONException e) {
                e.printStackTrace();
            } catch(Exception e){

            }

            return null;
        }

        protected void onPostExecute(String file_url) {
            // dismiss the dialog after getting all products
        }

    }

Answer 1

实际上你必须将所有数据分别设置为一些全局变量，然后在for循环中使用它。尝试以下代码：

ArrayList<MyListEntity> subList;
for (int i = 0; i < data.length(); i++) {
    //get the information JSON object
    String subIDInfo = objSub.getJSONObject(i).toString();
    //create java object from the JSON object
    MyListEntity cat = gson.fromJson(subIDInfo, MyListEntity.class);
    //add to country array list
    subList.add(cat);
    }

这里MyListEntity是全局变量的类。在这里你必须从JSON获取和设置你想要的变量。

Answer 2

因为在你的Enter row 1: 8 3 9 0 10 => 30 Enter row 2: 3 5 17 1 1 => 27 Enter row 3: 2 8 6 23 1 => 40 Enter row 4: 15 7 3 2 9 => 36 Enter row 5: 6 14 2 6 0 => 28 34 37 37 32 21循环中，你没有对解析的值做任何事情。在迭代循环之前，您需要将该值存储在某处。

for

Answer 3

ArrayList<String> weekId;

for (int i = 0; i < data.length(); i++) {
    JSONObject c = data.getJSONObject(i);
    String weekId = null;
    weekId.add(c.getString("weekid")); 


}

Answer 4

<{1>} JSON中以{开头的任何内容都是JsonObject，以[开头的是JsonArray。在此之后，请参阅以下代码：

jsonArray=fullJsonObject.getJsonArray("weeklydata");
for(int i=0;i<jsonArray.length();i++){  
   JSONObject obj=jsonArray.getJsonObject(i);
   /**this will give you the first object for i= 0 now (see below)**/                }

这意味着，obj将是

obj={"weekid":"16","stDate":"20160418","enDate":"20160424","stDay":"Mon","day":["MM","MM","NONE","NONE","NONE","NONE","NONE"],"fbFlag":"-1","twFlag":"-1","pcVpnFlag":"0"}

现在从此对象obj，您可以使用

检索所有字符串

String weekid=obj.getString("weekid");
String stDate=obj.getString("stDate");

等等。

Answer 5

你需要从你的回复中获取Json数组。只需按照以下步骤操作：

JSONObject json=new JSONObject(result);
JSONArray JArrary= json.getJSONArray("weeklydata");

之后你需要呼叫循环

for (int i= 0; i< JArrary.size(); i++) {
JSONObject obj= JArrary.getJSONObject(JArrary);
String weekid = obj.getString("weekid");
String stDate = obj.getString("stDate");
String enDate = obj.getString("enDate");
String stDay = obj.getString("stDay");
String fbFlag = obj.getString("fbFlag");
String twFlag = obj.getString("fbFlag");
String pcVpnFlag = obj.getString("pcVpnFlag");
JSONArray newArray= obj.getJSONArray("day");
String Day = newArray.toString();
}

希望它能帮到你:)。

Answer 6

尝试使用以下内容替换JSONArray：

JSONArray data = json.optJSONArray("weeklydata");

Answer 7

@Override
protected void onPreExecute() {
    super.onPreExecute();


}

/**
 * getting Inbox JSON
 */
protected String doInBackground(String... args) {
    // Building Parameters
    List<NameValuePair> params = new ArrayList<NameValuePair>();


    url = "www.someurl.com"


    Log.d(TAG, "URL IS:" + url);
    JSONObject json = jsonParser.makeHttpRequest(url, "GET", params, false);

    try {

        JSONArray data = json.getJSONArray("weeklydata");
        //I am concerned here. Here it is only giving first set of data (week16) and not second one (week15)


        List<Weaklydata> list = new ArrayList<>();

        for (int a = 0; a < data.length(); a++) {

            Weaklydata weaklydata = new Weaklydata();
            JSONObject jsonObject1 = data.getJSONObject(a);

            weaklydata.setEnDate(jsonObject1.getString("enDate"));
            weaklydata.setFbFlag(jsonObject1.getString("fbFlag"));
            weaklydata.setTwFlag(jsonObject1.getString("pcVpnFlag"));
            weaklydata.setStDate(jsonObject1.getString("stDate"));
            weaklydata.setStDay(jsonObject1.getString("stDay"));
            weaklydata.setWeekid(jsonObject1.getString("twFlag"));
            weaklydata.setWeekid(jsonObject1.getString("weekid"));

            List<String> dayList = new ArrayList<>();

            JSONArray jsonArray = jsonObject1.getJSONArray("day");

            for (int pos = 0; pos < jsonArray.length(); pos++) {
                dayList.add(jsonArray.getString(pos));
            }

            weaklydata.setDay(dayList);
            list.add(weaklydata);
        }


    } catch (JSONException e) {
        e.printStackTrace();
    } catch (Exception e) {

    }

    return null;
}

protected void onPostExecute(String file_url) {
    // dismiss the dialog after getting all products
}

}

公共课Weaklydata {

private String weekid;
private String stDate;
private String enDate;
private String stDay;
private List<String> day = new ArrayList<String>();
private String fbFlag;
private String twFlag;
private String pcVpnFlag;
private Map<String, Object> additionalProperties = new HashMap<String, Object>();

/**
 * @return The weekid
 */
public String getWeekid() {
    return weekid;
}

/**
 * @param weekid The weekid
 */
public void setWeekid(String weekid) {
    this.weekid = weekid;
}

/**
 * @return The stDate
 */
public String getStDate() {
    return stDate;
}

/**
 * @param stDate The stDate
 */
public void setStDate(String stDate) {
    this.stDate = stDate;
}

/**
 * @return The enDate
 */
public String getEnDate() {
    return enDate;
}

/**
 * @param enDate The enDate
 */
public void setEnDate(String enDate) {
    this.enDate = enDate;
}

/**
 * @return The stDay
 */
public String getStDay() {
    return stDay;
}

/**
 * @param stDay The stDay
 */
public void setStDay(String stDay) {
    this.stDay = stDay;
}

/**
 * @return The day
 */
public List<String> getDay() {
    return day;
}

/**
 * @param day The day
 */
public void setDay(List<String> day) {
    this.day = day;
}

/**
 * @return The fbFlag
 */
public String getFbFlag() {
    return fbFlag;
}

/**
 * @param fbFlag The fbFlag
 */
public void setFbFlag(String fbFlag) {
    this.fbFlag = fbFlag;
}

/**
 * @return The twFlag
 */
public String getTwFlag() {
    return twFlag;
}

/**
 * @param twFlag The twFlag
 */
public void setTwFlag(String twFlag) {
    this.twFlag = twFlag;
}

/**
 * @return The pcVpnFlag
 */
public String getPcVpnFlag() {
    return pcVpnFlag;
}

/**
 * @param pcVpnFlag The pcVpnFlag
 */
public void setPcVpnFlag(String pcVpnFlag) {
    this.pcVpnFlag = pcVpnFlag;
}

public Map<String, Object> getAdditionalProperties() {
    return this.additionalProperties;
}

public void setAdditionalProperty(String name, Object value) {
    this.additionalProperties.put(name, value);
}

}

无法正确解析JSON数据

7 个答案: