我在使用静态 HTTPS 连接方法时遇到了一个大问题。每秒请求失败并HttpsUrlConnection.getResponseCode()返回-1。因此，每第二次调用都运行良好，按预期返回数据。
这是我在应用程序的不同角落使用的静态类的方法。我猜想当方法第一次返回时我没有正确清理任何东西，并且导致问题的任何原因都可能通过第二次调用该方法而被破坏。但我很难找到任何线索。
我目前正在使用此类与具有无效 SSL 证书的主机通信。不会在应用程序的最终版本中使用它，但现在我需要省钱。;)
public static String makeInvalidHTTPSRequest(String url, String[] postVars, String userName, String userPass, Context ctx) throws MalformedURLException, IOException, NoSuchAlgorithmException, KeyManagementException {
StringBuffer sb = new StringBuffer();
String serverAuth = null;
String serverAuthBase64 = null;
StringBuffer urlParameters = new StringBuffer();
InputStream rcvdInputStream = null;
if (checkNetworkAvailability(ctx) == false) {
GeneralMethods.writeLog("Network unavailable", 1, GeneralMethods.class);
return null;
}
SSLContext sc = null;
sc = SSLContext.getInstance("TLS");
sc.init(null, new TrustManager[] { new KTPTrustManager() }, new SecureRandom());
GeneralMethods.writeLog("makeInvalidHTTPSRequest-> " + url + ", " + userName + ", " + userPass, 0, GeneralMethods.class);
HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
HttpsURLConnection.setDefaultHostnameVerifier(new KTPHostnameVerifier());
HttpsURLConnection con = null;
con = (HttpsURLConnection) new URL(url).openConnection();
if (userName != null) {
serverAuth = userName + ":" + userPass;
serverAuthBase64 = KTPBase64.encode(serverAuth.getBytes());
}
try {
String[] tmpPair = null;
con.setRequestMethod("POST");
if (serverAuthBase64 != null)
con.setRequestProperty("Authorization", "Basic " + serverAuthBase64);
con.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
if (postVars != null) {
for (int i = 0; i < postVars.length; i++) {
tmpPair = postVars[i].toString().split("=");
if (i > 0)
urlParameters.append("&" + tmpPair[0] + "=" + URLEncoder.encode(tmpPair[1], "UTF-8"));
else
urlParameters.append(tmpPair[0] + "=" + URLEncoder.encode(tmpPair[1], "UTF-8"));
}
con.setRequestProperty("Content-Length", "" + Integer.toString(urlParameters.toString().getBytes().length));
}
con.setUseCaches(false);
con.setDoOutput(true);
con.setDoInput(true);
DataOutputStream wr = new DataOutputStream (con.getOutputStream());
if (postVars != null)
wr.writeBytes (urlParameters.toString());
wr.flush();
wr.close();
if (con.getResponseCode() == 200) {
globalRetries = 0;
rcvdInputStream = con.getInputStream();
}
else if (con.getResponseCode() == 401) {
con.disconnect();
GeneralMethods.writeLog("error 401", 2, GeneralMethods.class);
con = null;
// SEND CONNECTION PROBLEM-INTENT
return null;
}
else {
GeneralMethods.writeLog("error - connection response code " + con.getResponseCode() + ": " + con.getResponseMessage() + " (length: "+ con.getContentLength() +")\n\n", 1, GeneralMethods.class);
con.disconnect();
con = null;
// SEND CONNECTION PROBLEM-INTENT
return null;
}
BufferedReader br = new BufferedReader(new InputStreamReader(rcvdInputStream), 8192 );
String line;
while ( ( line = br.readLine() ) != null ) {
sb.append(line);
}
con.disconnect();
con = null;
}
catch(Exception e) {
handleException(e, 2, GeneralMethods.class);
}
GeneralMethods.writeLog("makeInvalidHTTPSRequest: Response is \"" + sb.toString() + "\"\n\n", 0, GeneralMethods.class);
if(con != null) {
con.disconnect();
con = null;
}
if (sb.toString().trim() == "")
return null;
else
return sb.toString();
}
非常感谢你的帮助！
最好的问候
S。