带有post请求和参数的HttpUrlConnection作为Json object android
带有post请求和参数的HttpUrlConnection作为Json object android
提问于 2013-06-07 12:29:08
嗨，我正在开发一个小的安卓应用程序，其中我想使用json对象与参数的HttpUrlConnection post请求。但这对我来说不起作用，我是用以下方式做到的：
try
{
URL url;
DataOutputStream printout;
DataInputStream input;
url = new URL ("https://abc.com");
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setRequestMethod("POST");
urlConnection.setDoInput (true);
urlConnection.setDoOutput (true);
urlConnection.setUseCaches (false);
urlConnection.setConnectTimeout(10000);
urlConnection.setReadTimeout(10000);
urlConnection.setRequestProperty("Content-Type","application/json");
urlConnection.connect();
JSONObject jsonParam = new JSONObject();
JSONArray arr = new JSONArray();
arr.put("LNCf206KYa5b");
arr.put("oWdC0hnm1jjJ");
jsonParam.put("places", arr);
jsonParam.put("action", "Do");
printout = new DataOutputStream(urlConnection.getOutputStream ());
printout.writeUTF(URLEncoder.encode(jsonParam.toString(),"UTF-8"));
printout.flush ();
printout.close ();
int HttpResult =urlConnection.getResponseCode();
if(HttpResult ==HttpURLConnection.HTTP_OK){
BufferedReader br = new BufferedReader(new InputStreamReader(
urlConnection.getInputStream(),"utf-8"));
String line = null;
while ((line = br.readLine()) != null) {
sb.append(line + "\n");
}
br.close();
//System.out.println(""+sb.toString());
}else{
System.out.println(urlConnection.getResponseMessage());
}
} catch (MalformedURLException e) {
e.printStackTrace();
}
catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
if(urlConnection!=null)
urlConnection.disconnect();
}
}它没有给出任何响应代码或任何输出。我是不是做错了什么。如何解决这个问题。需要帮助。谢谢你。
我收到以下系统错误
06-07 09:55:58.171: W/System.err(4624): java.io.IOException: Received authentication challenge is null
06-07 09:55:58.171: W/System.err(4624): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.processAuthHeader(HttpURLConnectionImpl.java:1153)
06-07 09:55:58.171: W/System.err(4624): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.processResponseHeaders(HttpURLConnectionImpl.java:1095)
06-07 09:55:58.171: W/System.err(4624): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.retrieveResponse(HttpURLConnectionImpl.java:1048)
06-07 09:55:58.171: W/System.err(4624): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:726)
06-07 09:55:58.179: W/System.err(4624): at org.apache.harmony.luni.internal.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:121)
06-07 09:55:58.179: W/System.err(4624): at com.mobiotics.qcampaigns.data.operation.ProximityOperation.execute(ProximityOperation.java:187)
06-07 09:55:58.179: W/System.err(4624): at com.foxykeep.datadroid.service.RequestService.onHandleIntent(RequestService.java:145)
06-07 09:55:58.179: W/System.err(4624): at com.foxykeep.datadroid.service.MultiThreadedIntentService$IntentRunnable.run(MultiThreadedIntentService.java:170)回答 1
Stack Overflow用户
发布于 2015-06-11 03:56:26
我强烈推荐使用Unirest这是一个简单的库，用来发出http请求，它有一个非常容易使用的api，而且它不会让内存过载太多，下面是一个如何使用你的示例代码的例子。
Unirest.post("https://example.com")
.queryString("places", "['LNCf206KYa5b', 'oWdC0hnm1jjJ']")
.queryString("action", "Do")
.asJson()页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/16976240
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