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我有一些問題在Android 2.2上做一些POST請求,在新版本4.0+中一切工作正常。我正在做的請求也是一個https請求。我總是得到一個400壞請求。下面是我使用的代碼:在Android 2.2上POST與HttpURLConnection的問題
public String postRequest(String myurl, String requestBody) throws IOException {
try {
//Create connection
URL url = new URL(myurl);
connection = (HttpURLConnection)url.openConnection();
connection.setRequestMethod("POST");
for (Map.Entry<String, String> headerMap : httpHeaders.entrySet()) {
connection.setRequestProperty(headerMap.getKey(), headerMap.getValue());
Log.d("HttpRequest", " headers Key = " + headerMap.getKey() + ", Value = " + headerMap.getValue());
}
connection.setUseCaches (false);
connection.setDoOutput(true);
if(requestBody != null && requestBody.length() > 0) {
connection.setRequestProperty("Content-Length", "" +
Integer.toString(requestBody.getBytes().length));
connection.setFixedLengthStreamingMode(requestBody.getBytes().length);
// connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
// Log.v("RESPONSE MESSAGE", connection.getResponseMessage());
//Send request
OutputStream out = connection.getOutputStream();
out.write(requestBody.getBytes());
out.flush();
out.close();
Log.v("RESPONSE MESSAGE", myurl + " "+ connection.getResponseMessage());
}
int responseCode = connection.getResponseCode();
Log.w("HttpRequest rponse code:", myurl+" - "+responseCode);
if(responseCode == HttpURLConnection.HTTP_OK || responseCode == HttpURLConnection.HTTP_ACCEPTED) {
// Get Response
InputStream is = connection.getInputStream();
BufferedReader rd = new BufferedReader(new InputStreamReader(is));
String line;
StringBuffer response = new StringBuffer();
while((line = rd.readLine()) != null) {
response.append(line);
response.append('\r');
}
rd.close();
return response.toString();
} else {
// System.setProperty("http.keepAlive", "false");
InputStream error = ((HttpURLConnection) connection).getErrorStream();
Log.e("HTTP error", "Error, request failed code: "+ responseCode + " "+connection.getResponseMessage() +" \n " + error);
return null;
}
} catch (Exception e) {
e.printStackTrace();
return null;
} finally {
if(connection != null) {
connection.disconnect();
}
}
}
此外,我發佈一個XML主體。
<SetAchievementsCompletedByConsoleSpecificKeyRESTXML xmlns='http://tempuri.org/'><platformActionKeys xmlns:ns='http://schemas.microsoft.com/2003/10/Serialization/Arrays'><ns:string>1</ns:string></platformActionKeys></SetAchievementsCompletedByConsoleSpecificKeyRESTXML>
由於POST請求通常是「application/x-www-form-urlencoded」,您在哪裏指定此內容的MIME類型?你的服務器日誌告訴你什麼? – CommonsWare 2013-02-22 18:23:30
如果我只是發佈一個XML體而不是表單值,是否需要應用程序/ x-ww-form-urlencoded?我得到一個400響應代碼壞請求 – Frank 2013-02-22 18:24:33
「如果我只是發佈一個XML體,而不是形式值,是否有必要申請/ x-ww-form-urlencoded?」 - 'application/x-ww-form-urlencoded'在這種情況下是錯誤的,但是有時服務器對於任何數據('text/xml'?)都期待適當的MIME類型。你必須問問誰寫了你的服務器什麼是預期的,可能在你問他怎麼看服務器日誌以獲得比400響應代碼更多的信息的同時。 – CommonsWare 2013-02-22 18:27:46