我正面临一个让我发疯的问题，我在这个网站和谷歌搜索并找不到任何结果。
我正在使用使用JSON解析器的android sdk构建应用程序。
我编写了处理http帖子的代码，我得到了正确的响应，但是当我尝试使用以下方法将其解析为JSONObject时：
strJson - ＆gt;来自服务器的响应。
JSONobject json = new JSONObject（strJson）
它没有解析所有数据，有些对象是空白的（空指针）
我用许多工具（包括jsonlint.com）及其有效的
检查了json响应问题是什么？
BTW这是json的回应：
{
"tag": "login",
"success": 1,
"error": 0,
"userprofile": {
"0": "123",
"1": "0",
"2": "mock@g.com",
"3": "e807f1fcf82d132f9bb018ca6738a19f",
"4": "misha",
"5": "user",
"6": "2000-05-22",
"7": "264",
"8": "Ben Gurion, Engineer",
"9": "female",
"10": "female",
"11": "unemployed",
"12": "Sillicon Vally, USA",
"13": "english",
"14": "hi i am new to heyou",
"15": "1",
"16": "2012-04-15 11:11:29",
"user_id": "123",
"facebook_id": "0",
"email": "mock@g.com",
"password": "e807f1fcf82d132f9bb018ca6738a19f",
"firstname": "misha",
"lastname": "user",
"dob": "2000-05-22",
"points": "264",
"study": "Ben Gurion, Engineer",
"gender": "female",
"intrested": "female",
"profession": "unemployed",
"location": "Sillicon Vally, USA",
"knows": "english",
"status": "hi i am new to heyou",
"activated": "1",
"created": "2012-04-15 11:11:29"
},
"userpictures": {
"0": {
"0": "1",
"1": "123",
"2": "profile",
"3": "http://profile.ak.fbcdn.net/hprofile-ak-ash2/372237_100000725612104_1712537362_n.jpg",
"4": "2012-04-23 01:51:15",
"node_id": "1",
"user_id": "123",
"type": "profile",
"path": "http://profile.ak.fbcdn.net/hprofile-ak-ash2/372237_100000725612104_1712537362_n.jpg",
"updated": "2012-04-23 01:51:15"
},
"tag": "getpictures",
"success": 0,
"error": 0,
"user_id": "123",
"numberofpictures": 1
},
"userfriends": {
"0": {
"user_id": "456",
"name": "aksjdkasjdkasjdk ",
"picture": "http://profile.ak.fbcdn.net/hprofile-ak-snc4/369825_1446671611_369000795_n.jpg",
"online": "1",
"longitude": "32.5568774",
"lawtitude": "34.8789575",
"address": "Israel ,Beersheva ,even susan",
"client": "android"
},
"1": {
"user_id": "789",
"name": "naty ",
"picture": "http://profile.ak.fbcdn.net/hprofile-ak-snc4/368727_1016960715_915310545_n.jpg",
"online": "0",
"longitude": "32.58964587",
"lawtitude": "38.54578998",
"address": "IRAQ ,Bagdad ,bag 9288",
"client": "android"
},
"2": {
"user_id": "4fa01f9e1d9243.41584266",
"name": "matan ",
"picture": "http://profile.ak.fbcdn.net/hprofile-ak-ash2/372237_100000725612104_1712537362_n.jpg",
"online": "",
"longitude": "",
"lawtitude": "",
"address": "",
"client": ""
},
"3": {
"user_id": "456",
"name": "aksjdkasjdkasjdk ",
"picture": "http://profile.ak.fbcdn.net/hprofile-ak-snc4/369825_1446671611_369000795_n.jpg",
"online": "1",
"longitude": "32.5568774",
"lawtitude": "34.8789575",
"address": "Israel ,Beersheva ,even susan",
"client": "android"
},
"4": {
"user_id": "789",
"name": "naty ",
"picture": "http://profile.ak.fbcdn.net/hprofile-ak-snc4/368727_1016960715_915310545_n.jpg",
"online": "0",
"longitude": "32.58964587",
"lawtitude": "38.54578998",
"address": "IRAQ ,Bagdad ,bag 9288",
"client": "android"
},
"5": {
"user_id": "789",
"name": "naty ",
"picture": "http://profile.ak.fbcdn.net/hprofile-ak-snc4/368727_1016960715_915310545_n.jpg",
"online": "0",
"longitude": "32.58964587",
"lawtitude": "38.54578998",
"address": "IRAQ ,Bagdad ,bag 9288",
"client": "android"
},
"6": {
"user_id": "456",
"name": "aksjdkasjdkasjdk ",
"picture": "http://profile.ak.fbcdn.net/hprofile-ak-snc4/369825_1446671611_369000795_n.jpg",
"online": "1",
"longitude": "32.5568774",
"lawtitude": "34.8789575",
"address": "Israel ,Beersheva ,even susan",
"client": "android"
},
"7": {
"user_id": "456",
"name": "aksjdkasjdkasjdk ",
"picture": "http://profile.ak.fbcdn.net/hprofile-ak-snc4/369825_1446671611_369000795_n.jpg",
"online": "1",
"longitude": "32.5568774",
"lawtitude": "34.8789575",
"address": "Israel ,Beersheva ,even susan",
"client": "android"
},
"8": {
"user_id": "789",
"name": "naty ",
"picture": "http://profile.ak.fbcdn.net/hprofile-ak-snc4/368727_1016960715_915310545_n.jpg",
"online": "0",
"longitude": "32.58964587",
"lawtitude": "38.54578998",
"address": "IRAQ ,Bagdad ,bag 9288",
"client": "android"
},
"9": {
"user_id": "456",
"name": "aksjdkasjdkasjdk ",
"picture": "http://profile.ak.fbcdn.net/hprofile-ak-snc4/369825_1446671611_369000795_n.jpg",
"online": "1",
"longitude": "32.5568774",
"lawtitude": "34.8789575",
"address": "Israel ,Beersheva ,even susan",
"client": "android"
},
"10": {
"user_id": "123",
"name": "misha ",
"picture": "http://profile.ak.fbcdn.net/hprofile-ak-ash2/372237_100000725612104_1712537362_n.jpg",
"online": "0",
"longitude": "23",
"lawtitude": "54",
"address": " ,asdkasjd ,asdasd",
"client": "android"
},
"11": {
"user_id": "789",
"name": "naty ",
"picture": "http://profile.ak.fbcdn.net/hprofile-ak-snc4/368727_1016960715_915310545_n.jpg",
"online": "0",
"longitude": "32.58964587",
"lawtitude": "38.54578998",
"address": "IRAQ ,Bagdad ,bag 9288",
"client": "android"
},
"12": {
"user_id": "789",
"name": "naty ",
"picture": "http://profile.ak.fbcdn.net/hprofile-ak-snc4/368727_1016960715_915310545_n.jpg",
"online": "0",
"longitude": "32.58964587",
"lawtitude": "38.54578998",
"address": "IRAQ ,Bagdad ,bag 9288",
"client": "android"
},
"13": {
"user_id": "789",
"name": "naty ",
"picture": "http://profile.ak.fbcdn.net/hprofile-ak-snc4/368727_1016960715_915310545_n.jpg",
"online": "0",
"longitude": "32.58964587",
"lawtitude": "38.54578998",
"address": "IRAQ ,Bagdad ,bag 9288",
"client": "android"
},
"14": {
"user_id": "456",
"name": "aksjdkasjdkasjdk ",
"picture": "http://profile.ak.fbcdn.net/hprofile-ak-snc4/369825_1446671611_369000795_n.jpg",
"online": "1",
"longitude": "32.5568774",
"lawtitude": "34.8789575",
"address": "Israel ,Beersheva ,even susan",
"client": "android"
},
"15": {
"user_id": "123",
"name": "misha ",
"picture": "http://profile.ak.fbcdn.net/hprofile-ak-ash2/372237_100000725612104_1712537362_n.jpg",
"online": "0",
"longitude": "23",
"lawtitude": "54",
"address": " ,asdkasjd ,asdasd",
"client": "android"
},
"16": {
"user_id": "789",
"name": "naty ",
"picture": "http://profile.ak.fbcdn.net/hprofile-ak-snc4/368727_1016960715_915310545_n.jpg",
"online": "0",
"longitude": "32.58964587",
"lawtitude": "38.54578998",
"address": "IRAQ ,Bagdad ,bag 9288",
"client": "android"
},
"17": {
"user_id": "789",
"name": "naty ",
"picture": "http://profile.ak.fbcdn.net/hprofile-ak-snc4/368727_1016960715_915310545_n.jpg",
"online": "0",
"longitude": "32.58964587",
"lawtitude": "38.54578998",
"address": "IRAQ ,Bagdad ,bag 9288",
"client": "android"
},
"18": {
"user_id": "789",
"name": "naty ",
"picture": "http://profile.ak.fbcdn.net/hprofile-ak-snc4/368727_1016960715_915310545_n.jpg",
"online": "0",
"longitude": "32.58964587",
"lawtitude": "38.54578998",
"address": "IRAQ ,Bagdad ,bag 9288",
"client": "android"
},
"tag": "getfriendlist",
"success": 1,
"user_id": "123",
"numberoffriends": 19
},
"usergoods": {
"0": {
"0": "123",
"1": "Burger",
"2": "Eat some burger",
"3": "Gifts",
"4": "25",
"5": "25",
"6": "http://www.pythagorapps.com/heyou/gifts/123.png",
"7": null,
"8": "2012-05-07 01:25:53",
"product_id": "123",
"product_name": "Burger",
"product_desc": "Eat some burger",
"category": "Gifts",
"product_price": "25",
"product_points": "25",
"path": "http://www.pythagorapps.com/heyou/gifts/123.png",
"locale": null,
"created": "2012-05-07 01:25:53"
},
"1": {
"0": "456",
"1": "Beer",
"2": "Drink ice cold beer",
"3": "Gifts",
"4": "30",
"5": "30",
"6": "http://www.pythagorapps.com/heyou/gifts/456.png",
"7": null,
"8": "2012-05-07 01:25:53",
"product_id": "456",
"product_name": "Beer",
"product_desc": "Drink ice cold beer",
"category": "Gifts",
"product_price": "30",
"product_points": "30",
"path": "http://www.pythagorapps.com/heyou/gifts/456.png",
"locale": null,
"created": "2012-05-07 01:25:53"
},
"2": {
"0": "789",
"1": "Coctail",
"2": "Drink a refreshing coctail",
"3": "Gifts",
"4": "50",
"5": "50",
"6": "http://www.pythagorapps.com/heyou/gifts/789.png",
"7": null,
"8": "2012-05-10 04:56:18",
"product_id": "789",
"product_name": "Coctail",
"product_desc": "Drink a refreshing coctail",
"category": "Gifts",
"product_price": "50",
"product_points": "50",
"path": "http://www.pythagorapps.com/heyou/gifts/789.png",
"locale": null,
"created": "2012-05-10 04:56:18"
},
"tag": "getgoods",
"success": 1,
"error": 0,
"numofgoods": 3
},
"useravatar": {
"tag": "getlatest",
"success": 0,
"error": 10,
"err_msg": "cannot connect to mySQL database"
},
"shopcategories": {
"0": {
"0": "1",
"1": "Shirts",
"2": "Buy some cool new shirts",
"3": "null",
"4": "2012-05-07 01:09:02",
"index": "1",
"name": "Shirts",
"desc": "Buy some cool new shirts",
"path": "null",
"created": "2012-05-07 01:09:02"
},
"1": {
"0": "2",
"1": "Gifts",
"2": "buy some cool gifts",
"3": "null",
"4": "2012-05-07 01:09:58",
"index": "2",
"name": "Gifts",
"desc": "buy some cool gifts",
"path": "null",
"created": "2012-05-07 01:09:58"
},
"tag": "getcat",
"success": 1,
"error": 0,
"numofcat": 2
},
"shopproducts": {
"0": {
"0": "123",
"1": "Burger",
"2": "Eat some burger",
"3": "Gifts",
"4": "25",
"5": "25",
"6": "http://www.pythagorapps.com/heyou/gifts/123.png",
"7": null,
"8": "2012-05-07 01:25:53",
"product_id": "123",
"product_name": "Burger",
"product_desc": "Eat some burger",
"category": "Gifts",
"product_price": "25",
"product_points": "25",
"path": "http://www.pythagorapps.com/heyou/gifts/123.png",
"locale": null,
"created": "2012-05-07 01:25:53"
},
"1": {
"0": "456",
"1": "Beer",
"2": "Drink ice cold beer",
"3": "Gifts",
"4": "30",
"5": "30",
"6": "http://www.pythagorapps.com/heyou/gifts/456.png",
"7": null,
"8": "2012-05-07 01:25:53",
"product_id": "456",
"product_name": "Beer",
"product_desc": "Drink ice cold beer",
"category": "Gifts",
"product_price": "30",
"product_points": "30",
"path": "http://www.pythagorapps.com/heyou/gifts/456.png",
"locale": null,
"created": "2012-05-07 01:25:53"
},
"2": {
"0": "789",
"1": "Coctail",
"2": "Drink a refreshing coctail",
"3": "Gifts",
"4": "50",
"5": "50",
"6": "http://www.pythagorapps.com/heyou/gifts/789.png",
"7": null,
"8": "2012-05-10 04:56:18",
"product_id": "789",
"product_name": "Coctail",
"product_desc": "Drink a refreshing coctail",
"category": "Gifts",
"product_price": "50",
"product_points": "50",
"path": "http://www.pythagorapps.com/heyou/gifts/789.png",
"locale": null,
"created": "2012-05-10 04:56:18"
},
"tag": "getall",
"success": 1,
"error": 0,
"numofproducts": 3,
"user_id": "123"
}
}
BTW 2：
iOS应用似乎正确解析它。
提前感谢。
编辑：
获得回复的代码是：
public JSONObject getJSONFromURL(String URL,List<NameValuePair> params){
//try to make http request:
try{
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(URL+listToString(params));
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
}
catch(UnsupportedEncodingException e){
e.printStackTrace();
}
catch(ClientProtocolException e){
e.printStackTrace();
}
catch(IOException e){
e.printStackTrace();
}
//try to read the respond:
try{
BufferedReader reader = new BufferedReader(new InputStreamReader(is,"iso-8859-1"),8);
StringBuilder sb = new StringBuilder();
String line = null;
while((line = reader.readLine())!=null){
sb.append(line+"\n");
}
is.close();
strJson = sb.toString();
Log.e("JSON",strJson);
}
catch(Exception e){
Log.e("Buffer Error","Error converting result " + e.toString());
}
//try to parse the string to JSON object:
try{
json = new JSONObject(strJson);
}
catch(JSONException e){
Log.e("JSON Parser","Error parsing data " + e.toString());
}
return json;
}
json返回的json对象缺少一些像userprofiles，success等对象......
但strJson有效！
答案 0 :(得分：0)
String value =（String）jsonserch2.opt（key）;
当对象ha为null时，请尝试此操作，它会自动拒绝它 而是 jsonserch2.getString（key）;