在Android 5.0及更高版本中运行时,我的代码运行正常.但是在Android 4.1.1中它会抛出java.net.SocketTimeoutException:SSL握手超时.

URL url;

HttpURLConnection connection = null;

String charset = "UTF-8";

String accessToken = "";

try {

ArrayList postParameters = new ArrayList();

postParameters.add(new BasicNameValuePair("client_id", CLIENT_ID));

postParameters.add(new BasicNameValuePair("client_secret", CLIENT_SECRET));

postParameters.add(new BasicNameValuePair("grant_type", CLIENT_CREDENTIALS_GRANT_TYPE));

//Create connection

url = new URL(ACCESS_TOKEN_URL);

connection = (HttpURLConnection)url.openConnection();

connection.setReadTimeout( 10000 /*milliseconds*/ );

connection.setConnectTimeout( 15000 /* milliseconds */ );

connection.setInstanceFollowRedirects(false);

connection.setRequestMethod("POST");

connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded;charset=" + charset);

connection.setUseCaches(false);

connection.setDoInput(true);

connection.setDoOutput(true);

//Send request

DataOutputStream wr = new DataOutputStream(connection.getOutputStream());

wr.write(getQuery(postParameters).getBytes(charset));

wr.flush();

wr.close();

int responseCode = connection.getResponseCode();

InputStream is = null;

if(responseCode==HttpStatus.SC_OK) {

is = connection.getInputStream();

}

else{

is = connection.getErrorStream();

}

Log.d(TAG, "responseCode: "+responseCode);

BufferedReader reader = new BufferedReader(new InputStreamReader(is));

StringBuilder sb = new StringBuilder();

String line = null;

while ((line = reader.readLine()) != null) {

sb.append(line + "\n");

}

is.close();

reader.close();

String jsonResult = sb.toString();

JSONObject jsonObject = new JSONObject(jsonResult);

if(responseCode==HttpStatus.SC_OK){

accessToken = jsonObject.getString("access_token");

SettingsPreference.setAccessToken(accessToken);

Log.d(TAG, "access token: "+accessToken);

}

else {

accessToken = null;

}

} catch (Exception e) {

e.printStackTrace();

} finally {

if(connection != null) {

connection.disconnect();

}

}

我已经做了很多研究,这非常令人沮丧.我出了什么问题？这是服务器问题吗？非常感谢您的帮助.