我知道JSON解析，但在我当前的项目中，我得到了一些不同类型的JSON格式，其中所有对象的名称都是动态的，并且它们可能会发生变化。
{
"category_id": "1",
"parent_id": "0",
"name": "Root Catalog",
"is_active": null,
"position": "0",
"level": "0",
"children": {
"0": {
"category_id": "2",
"parent_id": "1",
"name": "Default Category",
"is_active": "1",
"position": "1",
"level": "1",
"children": {
"0": {
"category_id": "32",
"parent_id": "2",
"name": "Services",
"is_active": "1",
"position": "1",
"level": "2",
"children": {
"0": {
"category_id": "20",
"parent_id": "32",
"name": "Makeup",
"is_active": "1",
"position": "1",
"level": "3",
"children": {
"0": {
"category_id": "22",
"parent_id": "20",
"name": "Bridal Makeup",
"is_active": "1",
"position": "1",
"level": "4",
"children": {
}
},
"1": {
"category_id": "23",
"parent_id": "20",
"name": "General Makeup",
"is_active": "1",
"position": "2",
"level": "4",
"children": {
}
}
}
},
"1": {
"category_id": "21",
"parent_id": "32",
"name": "Skin Services",
"is_active": "1",
"position": "2",
"level": "3",
"children": {
"0": {
"category_id": "24",
"parent_id": "21",
"name": "Bleach",
"is_active": "1",
"position": "1",
"level": "4",
"children": {
}
},
"1": {
"category_id": "25",
"parent_id": "21",
"name": "Cleanup",
"is_active": "1",
"position": "2",
"level": "4",
"children": {
}
},
"2": {
"category_id": "26",
"parent_id": "21",
"name": "General Facials",
"is_active": "1",
"position": "3",
"level": "4",
"children": {
}
},
"3": {
"category_id": "27",
"parent_id": "21",
"name": "Masks",
"is_active": "1",
"position": "4",
"level": "4",
"children": {
}
},
"4": {
"category_id": "28",
"parent_id": "21",
"name": "Special Facials",
"is_active": "1",
"position": "5",
"level": "4",
"children": {
}
},
"5": {
"category_id": "29",
"parent_id": "21",
"name": "Threading",
"is_active": "1",
"position": "6",
"level": "4",
"children": {
}
},
"6": {
"category_id": "30",
"parent_id": "21",
"name": "Waxing",
"is_active": "1",
"position": "7",
"level": "4",
"children": {
}
},
"7": {
"category_id": "38",
"parent_id": "21",
"name": "Special Services",
"is_active": "1",
"position": "8",
"level": "4",
"children": {
}
},
"8": {
"category_id": "40",
"parent_id": "21",
"name": "Lip Care",
"is_active": "1",
"position": "9",
"level": "4",
"children": {
}
},
"9": {
"category_id": "41",
"parent_id": "21",
"name": "Eye Care",
"is_active": "1",
"position": "10",
"level": "4",
"children": {
}
}
}
},
"2": {
"category_id": "3",
"parent_id": "32",
"name": "Body Services",
"is_active": "1",
"position": "3",
"level": "3",
"children": {
"0": {
"category_id": "4",
"parent_id": "3",
"name": "Body Wraps",
"is_active": "1",
"position": "1",
"level": "4",
"children": {
}
},
"1": {
"category_id": "5",
"parent_id": "3",
"name": "Reflexology",
"is_active": "1",
"position": "2",
"level": "4",
"children": {
}
},
"2": {
"category_id": "6",
"parent_id": "3",
"name": "Special Body Services",
"is_active": "1",
"position": "3",
"level": "4",
"children": {
}
}
}
},
"3": {
"category_id": "7",
"parent_id": "32",
"name": "Hair Services",
"is_active": "1",
"position": "4",
"level": "3",
"children": {
"0": {
"category_id": "8",
"parent_id": "7",
"name": "Chemical Treatments",
"is_active": "0",
"position": "1",
"level": "4",
"children": {
}
},
"1": {
"category_id": "42",
"parent_id": "7",
"name": "Hair Extensions",
"is_active": "1",
"position": "2",
"level": "4",
"children": {
}
},
"2": {
"category_id": "9",
"parent_id": "7",
"name": "Hair Color",
"is_active": "1",
"position": "3",
"level": "4",
"children": {
}
},
"3": {
"category_id": "10",
"parent_id": "7",
"name": "Haircut",
"is_active": "1",
"position": "4",
"level": "4",
"children": {
}
},
"4": {
"category_id": "11",
"parent_id": "7",
"name": "Hair Straightening",
"is_active": "1",
"position": "5",
"level": "4",
"children": {
}
},
"5": {
"category_id": "12",
"parent_id": "7",
"name": "Hair Styling",
"is_active": "1",
"position": "6",
"level": "4",
"children": {
}
},
"6": {
"category_id": "13",
"parent_id": "7",
"name": "Hair Treatments",
"is_active": "1",
"position": "7",
"level": "4",
"children": {
}
},
"7": {
"category_id": "14",
"parent_id": "7",
"name": "Other Hair Services",
"is_active": "1",
"position": "8",
"level": "4",
"children": {
}
},
"8": {
"category_id": "15",
"parent_id": "7",
"name": "Special Hair Services",
"is_active": "1",
"position": "9",
"level": "4",
"children": {
}
}
}
},
"4": {
"category_id": "16",
"parent_id": "32",
"name": "Hands And Feet",
"is_active": "1",
"position": "5",
"level": "3",
"children": {
"0": {
"category_id": "17",
"parent_id": "16",
"name": "Manicure",
"is_active": "1",
"position": "1",
"level": "4",
"children": {
}
},
"1": {
"category_id": "18",
"parent_id": "16",
"name": "Nail Art",
"is_active": "1",
"position": "2",
"level": "4",
"children": {
}
},
"2": {
"category_id": "19",
"parent_id": "16",
"name": "Pedicure",
"is_active": "1",
"position": "3",
"level": "4",
"children": {
}
}
}
}
}
},
"1": {
"category_id": "33",
"parent_id": "2",
"name": "Memberships",
"is_active": "1",
"position": "2",
"level": "2",
"children": {
}
},
"2": {
"category_id": "34",
"parent_id": "2",
"name": "Packages",
"is_active": "1",
"position": "3",
"level": "2",
"children": {
}
},
"3": {
"category_id": "35",
"parent_id": "2",
"name": "Offers",
"is_active": "1",
"position": "4",
"level": "2",
"children": {
}
},
"4": {
"category_id": "36",
"parent_id": "2",
"name": "Customer Reviews",
"is_active": "1",
"position": "5",
"level": "2",
"children": {
}
},
"5": {
"category_id": "37",
"parent_id": "2",
"name": "Gallery",
"is_active": "1",
"position": "6",
"level": "2",
"children": {
}
},
"6": {
"category_id": "31",
"parent_id": "2",
"name": "Contact us",
"is_active": "1",
"position": "7",
"level": "2",
"children": {
}
}
}
}
}
}
所以在doInBackground()中，我的表现如下： -
@Override
protected String doInBackground(String... params) {
ServiceHandler serviceHandler = new ServiceHandler();
String jsonStr = serviceHandler.makeServiceCall(
Constants.SIDE_DRAWER_SERVICES, ServiceHandler.GET);
try {
JSONObject jobj = new JSONObject(jsonStr);
Log.d("", "" + jsonStr.toString());
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return jsonStr;
}
in String＆＃34; jsonStr＆＃34;我得到了完整的数据作为响应，但是当它转换为JSONObject时，就像＆＃34; JSONObject jobj = new JSONObject（jsonStr）;＆＃34;我错过了这样的数据： -
{
"position": "0",
"children": {
"0": {
"position": "1",
"children": {
"3": {
"position": "4",
"children": {
},
"category_id": "35",
"level": "2",
"is_active": "1",
"name": "Offers",
"parent_id": "2"
},
"2": {
"position": "3",
"children": {
},
"category_id": "34",
"level": "2",
"is_active": "1",
"name": "Packages",
"parent_id": "2"
},
"1": {
"position": "2",
"children": {
},
"category_id": "33",
"level": "2",
"is_active": "1",
"name": "Memberships",
"parent_id": "2"
},
"0": {
"position": "1",
"children": {
"3": {
"position": "4",
"children": {
"3": {
"position": "4",
"children": {
},
"category_id": "10",
"level": "4",
"is_active": "1",
"name": "Haircut",
"parent_id": "7"
},
"2": {
"position": "3",
"children": {
},
"category_id": "9",
"level": "4",
"is_active": "1",
"name": "Hair Color",
"parent_id": "7"
},
"1": {
"position": "2",
"children": {
},
"category_id": "42",
"level": "4",
"is_active": "1",
"name": "Hair Extensions",
"parent_id": "7"
},
"0": {
"position": "1",
"children": {
},
"category_id": "8",
"level": "4",
"is_active": "0",
"name": "Chemical Treatments",
"parent_id": "7"
},
"7": {
"position": "8",
"children": {
},
"category_id": "14",
"level": "4",
"is_active": "1",
"name": "Other Hair Services",
"parent_id": "7"
},
"6": {
"position": "7",
"children": {
},
"category_id": "13",
"level": "4",
"is_active": "1",
"name": "Hair Treatments",
"parent_id": "7"
},
"5": {
"position": "6",
"children": {
},
"category_id": "12",
"level": "4",
"is_active": "1",
"name": "Hair Styling",
"parent_id": "7"
},
"4": {
"position": "5",
"children": {
},
"category_id": "11",
"level": "4",
"is_active": "1",
"name": "Hair Straightening",
"parent_id": "7"
},
"8": {
"position": "9",
"children": {
},
"category_id": "15",
"level": "4",
"is_active": "1",
"name": "Special Hair Services",
"parent_id": "7"
}
},
"category_id": "7",
"level": "3",
"is_active": "1",
"name": "Hair Services",
"parent_id": "32"
},
"2": {
"position": "3",
"children": {
"2": {
"position": "3",
"children": {
},
"category_id": "6",
"level": "4",
"is_active": "1",
"name": "Special Body Services",
"parent_id": "3"
},
"1": {
"position": "2",
"children": {
},
我不知道我的JSON发生了什么。请帮帮我，告诉我JSON是否无效。
答案 0 :(得分：3)
最后得到了解决方案，在调试时，字符串显示所有数据并不重要，但在JSONObject中，所有数据都可用但在调试时没有显示。当检索到时来自JSONObject的数据我获得了调试器中未显示的所有字段。
答案 1 :(得分：1)
要解析的示例JSON文件
[
{
"Language": "Afrikaans",
"Native_Language": "Afrikaans",
"code": "af"
},
{
"Language": "Somali",
"Native_Language": "af Soomaali",
"code": "so"
},
{
"Language": "Arabic",
"Native_Language": "(al arabiya) العربية",
"code": "ar"
},
{
"Language": "Azerbaijani",
"Native_Language": "Azərbaycan",
"code": "az"
}
]
以及用于解析上述JSON文件的Android代码。这项工作根据您的json响应完美地更改它。
package com.example.jsonparsing;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ArrayAdapter;
import android.widget.ListView;
public class MainActivity extends ActionBarActivity {
private ListView listViewLanguages;
ArrayList<String> languageArray = new ArrayList<String>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listViewLanguages =(ListView)findViewById(R.id.languages);
//===========================Reading Json File===================================//
StringBuffer buffer = new StringBuffer();
BufferedReader reader;
try {
reader = new BufferedReader(new InputStreamReader(getAssets().open("languagesupdated.json")));
String readData;
while((readData = reader.readLine()) != null)
{
buffer.append(readData);
}
} catch (IOException e) {
e.printStackTrace();
}
//===========================Getting Json Element===================================//
String languageName;
JSONArray array = null;
try {
array = new JSONArray(buffer.toString());
for (int i = 0; i < array.length(); i++) {
JSONObject jsonObject = array.getJSONObject(i);
languageName = jsonObject.getString("Language");
languageArray.add(languageName);
}
} catch (JSONException e) {
e.printStackTrace();
}
//===========================GettingListView===================================//
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, languageArray);
//listViewLanguages.setBackgroundColor(new ColorDrawable));
listViewLanguages.setAdapter(adapter);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
答案 2 :(得分：0)
您的logcat仅显示一些数据行，因此请使用此功能打印数据。
通过longInfo(your_big_string);
public static void longInfo(String str) {
if(str.length() > 4000) {
Log.i(TAG, str.substring(0, 4000));
longInfo(str.substring(4000));
} else
Log.i(TAG, str);
}