Java org.json.JSONArray 类型的值无法转换为 JSONObject
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Value of type org.json.JSONArray cannot be converted to JSONObject
提问by MeIsOlsson
Got stuck at this error:
被这个错误卡住了：
3169-3190/com.meisolsson.app E/JSON Parser﹕ Error parsing data org.json.JSONException: Value [{"type":0,"can_see_custom_stories":true,"display":"","name":"jenniaim"},{"type":0,"can_see_custom_stories":true,"display":"","name":"lucasgardebrand"},{"type":0,"can_see_custom_stories":true,"display":"","name":"herr_anderzzon"},{"type":0,"can_see_custom_stories":true,"display":"","name":"chrillebile"},{"type":0,"can_see_custom_stories":true,"display":"","name":"meisolsson"},{"type":0,"can_see_custom_stories":true,"display":"","name":"sakanapanda"},{"type":0,"can_see_custom_stories":true,"display":"Team Snapchat","name":"teamsnapchat"},{"type":0,"can_see_custom_stories":true,"display":"","name":"fabianlindfors"},{"type":0,"can_see_custom_stories":true,"display":"Katja","name":"katjaawesome"},{"type":0,"can_see_custom_stories":true,"display":"","name":"swimkey"},{"type":1,"can_see_custom_stories":true,"display":"","name":"agnesholmberg"}] of type org.json.JSONArray cannot be converted to JSONObject
3169-3190/com.meisolsson.app E/JSON 解析器解析数据时出错：org.json.JSONException: Value [{"type":0,"can_see_custom_stories":true,"display":"","name":" jenniaim"},{"type":0,"can_see_custom_stories":true,"display":"","name":"lucasgardebrand"},{"type":0,"can_see_custom_stories":true,"display": "","name":"herr_anderzzon"},{"type":0,"can_see_custom_stories":true,"display":"","name":"chrillebile"},{"type":0,"can_see_custom_stories ":true,"display":"","name":"meisolsson"},{"type":0,"can_see_custom_stories":true,"display":"","name":"sakanapanda"},{"type":0,"can_see_custom_stories":true,"display":"Team Snapchat","name":"teamsnapchat"},{"type":0," can_see_custom_stories":true,"display":"","name":"fabianlindfors"},{"type":0,"can_see_custom_stories":true,"display":"Katja","name":"katjaawesome"} ,{"type":0,"can_see_custom_stories":true,"display":"","name":"swimkey"},{"type":1,"can_see_custom_stories":true,"display":"", org.json.JSONArray 类型的 "name":"agnesholmberg"}] 无法转换为 JSONObjecttype":0,"can_see_custom_stories":true,"display":"Team Snapchat","name":"teamsnapchat"},{"type":0,"can_see_custom_stories":true,"display":""," name":"fabianlindfors"},{"type":0,"can_see_custom_stories":true,"display":"Katja","name":"katjaawesome"},{"type":0,"can_see_custom_stories":true ,"display":"","name":"swimkey"},{"type":1,"can_see_custom_stories":true,"display":"","name":"agnesholmberg"}] 类型为 org. json.JSONArray 无法转换为 JSONObjecttype":0,"can_see_custom_stories":true,"display":"Team Snapchat","name":"teamsnapchat"},{"type":0,"can_see_custom_stories":true,"display":""," name":"fabianlindfors"},{"type":0,"can_see_custom_stories":true,"display":"Katja","name":"katjaawesome"},{"type":0,"can_see_custom_stories":true ,"display":"","name":"swimkey"},{"type":1,"can_see_custom_stories":true,"display":"","name":"agnesholmberg"}] 类型为 org. json.JSONArray 无法转换为 JSONObjectname":"teamsnapchat"},{"type":0,"can_see_custom_stories":true,"display":"","name":"fabianlindfors"},{"type":0,"can_see_custom_stories":true, "display":"Katja","name":"katjaawesome"},{"type":0,"can_see_custom_stories":true,"display":"","name":"swimkey"},{"type" :1,"can_see_custom_stories":true,"display":"","name":"agnesholmberg"}] 类型 org.json.JSONArray 不能转换为 JSONObjectname":"teamsnapchat"},{"type":0,"can_see_custom_stories":true,"display":"","name":"fabianlindfors"},{"type":0,"can_see_custom_stories":true, "display":"Katja","name":"katjaawesome"},{"type":0,"can_see_custom_stories":true,"display":"","name":"swimkey"},{"type" :1,"can_see_custom_stories":true,"display":"","name":"agnesholmberg"}] 类型 org.json.JSONArray 不能转换为 JSONObjectcan_see_custom_stories":true,"display":"Katja","name":"katjaawesome"},{"type":0,"can_see_custom_stories":true,"display":"","name":"swimkey"} ,{"type":1,"can_see_custom_stories":true,"display":"","name":"agnesholmberg"}] 类型 org.json.JSONArray 无法转换为 JSONObjectcan_see_custom_stories":true,"display":"Katja","name":"katjaawesome"},{"type":0,"can_see_custom_stories":true,"display":"","name":"swimkey"} ,{"type":1,"can_see_custom_stories":true,"display":"","name":"agnesholmberg"}] 类型 org.json.JSONArray 无法转换为 JSONObjectJSONArray 无法转换为 JSONObjectJSONArray 无法转换为 JSONObject
So here is the code:
所以这里是代码：
public class JSONParser extends AsyncTask<Void, Void, Boolean> {
static InputStream is = null;
static JSONObject jObj = null;
static String json = "";
// constructor
public JSONParser() {
}
public JSONObject getJSONFromUrl(String url) {
// Making HTTP request
try {
// defaultHttpClient
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("username", LoginActivity.Suser));
nameValuePairs.add(new BasicNameValuePair("password", LoginActivity.Spass));
httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
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 {
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();
json = sb.toString();
} catch (Exception e) {
Log.e("Buffer Error", "Error converting result " + e.toString());
}
// try parse the string to a JSON object
try {
jObj = new JSONObject(json);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
// return JSON String
return jObj;
}
@Override
protected Boolean doInBackground(Void... params) {
getJSONFromUrl("http://flapplabs.se/development/snapchat/friends.php");
return null;
}
}
采纳答案by Hariharan
[..]means it should be an JSONArrayand {..}means it should be a JSONObject.
[..]意味着它应该是一个JSONArray并且{..}意味着它应该是一个JSONObject。
Therefore:
所以：
try {
JSONArray jObj = new JSONArray(json);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
回答by JesseBoyd
Even though I had a single JSON object it was stored in an array as Hariharan has pointed out with the square brackets [ { items:items, ... } ]
即使我有一个 JSON 对象，它也存储在一个数组中，正如 Hariharan 用方括号指出的那样 [ { items:items, ... } ]
My solution was simply to parse out the only object, located in array position [0] like this
我的解决方案只是解析出唯一的对象，位于数组位置 [0] 像这样
JSONArray jsonArray = new JSONArray(stringIn);
JSONObject obj = jsonArray.getJSONObject(0);
