I currently am trying to make a request (With HttpURLConnection) to an IIS server that will bounce me with redirects until the target destination.
The issue : java.net.ProtocolException: Unexpected status line: <html><head><title>Object moved</title></head><body>
This happens when urlConnection.getInputStream() is called (or urlConnection.getResponseCode(), which calls it).
I have seen numerous cases where the issue is simply a misconfigured server, but in this case, making a request from Chrome while faking an Android user agent yields the expected result.
Furthermore, the server is an ancient one, that has never been the source of problem, and is configured in the same way as one used in a production environnement.
Reaching another redirecting webpage works fine (Tested with https://com.google/, 2 redirections), and reaching a non-redirecting webpage on the server poses no problem.
I have been looking for two days, and have made no progress. ANY help would be appreciated.
The code that is currently used :
StringBuilder builder = new StringBuilder();
HttpsURLConnection urlConnection = null;
try {
URL url = new URL(urlStrings[0]);
urlConnection = (HttpsURLConnection) url.openConnection();
LogHelper.Log(getBaseContext(), "Request on URL :\n\"" + url + "\"");
urlConnection.setRequestMethod("GET");
urlConnection.setReadTimeout(10000);
urlConnection.setConnectTimeout(15000);
urlConnection.setRequestProperty("Accept","*/*");
urlConnection.setDoOutput(false);
urlConnection.setDoInput(true);
urlConnection.setInstanceFollowRedirects(true);
urlConnection.setUseCaches(false);
CookieManager cookieManager = new CookieManager();
cookieManager.setCookiePolicy(CookiePolicy.ACCEPT_ALL);
CookieHandler.setDefault(cookieManager);
urlConnection.connect();
int status = urlConnection.getResponseCode();
LogHelper.Log(getBaseContext(), "Status code is \"" + status + "\"");
if (!url.equals(urlConnection.getURL())) {
LogHelper.Log(getBaseContext(), "URL after redirection is :\n\"" + urlConnection.getURL() + "\"");
}
switch (status/100) {
case 1:
case 2:
case 3:
InputStream stream = urlConnection.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(stream));
String line;
while ((line = reader.readLine()) != null) {
builder.append(line).append("\n");
}
reader.close();
break;
case 4:
case 5:
InputStream errorStream = urlConnection.getErrorStream();
BufferedReader errorReader = new BufferedReader(new InputStreamReader(errorStream));
String errorLine;
while ((errorLine = errorReader.readLine()) != null) {
builder.append(errorLine).append("\n");
}
errorReader.close();
throw new Exception(builder.toString());
default:
throw new Exception("Unknown status code: " + status);
}
} catch (Exception e) {
LogHelper.Log(getBaseContext(), e);
} finally {
if (urlConnection != null) {
urlConnection.disconnect();
}
}
return builder.toString();
The resulting error :
java.net.ProtocolException: Unexpected status line: <html><head><title>Object moved</title></head><body>
at com.android.okhttp.internal.http.StatusLine.parse(StatusLine.java:54)
at com.android.okhttp.internal.http.HttpConnection.readResponse(HttpConnection.java:239)
at com.android.okhttp.internal.http.HttpTransport.readResponseHeaders(HttpTransport.java:104)
at com.android.okhttp.internal.http.HttpEngine.readNetworkResponse(HttpEngine.java:1120)
at com.android.okhttp.internal.http.HttpEngine.readResponse(HttpEngine.java:951)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:482)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getResponse(
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getResponseCode(
at com.android.okhttp.internal.huc.DelegatingHttpsURLConnection.getResponseCode(
at com.android.okhttp.internal.huc.HttpsURLConnectionImpl.getResponseCode(
at com.pushmanager.clientmdm.activities.RegistrationView$1$2.doInBackground(
at com.pushmanager.clientmdm.activities.RegistrationView$1$2.doInBackground(
at android.os.AsyncTask$2.call(AsyncTask.java:295)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
at java.lang.Thread.run(Thread.java:818)
Turns out, this behavior was caused because of a \n character in the URL string.
I have no idea how okhttp managed this result, but with the character removed, the problem disappeared.
Related
I am working on an Android App, App is using GET Request to connect with server.
The code I have written to connect with server is working perfectly on many devices.
But its not giving good response on LENOVO YOGA TAB3, It returns Html tags instead of JSON text, Firstly I was confused that there may be some issue in the API URL but I checked URL using browser, Its returning good response so I am sure URL is correct.
Here are API URL and its response :
API URL
[http://www.xyz.in/xyzapi/?building=on&address=Assotech Sandal Suites, Sector 135, Noida, Uttar Pradesh 201304, India&bill_amount=12500&type=R&fullstatename=Uttar Pradesh&lat=28.496171099999998&lng=77.4027049&state=UP&country=IN&district=Gautam Buddha Nagar&sublocality=Sector 135&calc-sess=59d4beba305f3&netmetering=1][1]
Response on Many Android Phones:
{"lifetimesaving":"25.0 Lacs","proposed_pv_capacity":10,"billWithSolar":3872,"bill_amount":"12500","sanction":10,"project_cost":"6.0 Lacs","return_oninevstment":"20.8","roi_image":"solar_score6_6.png","treeadded":"346 ","treeofftheroad":"9 "}
Response on Lenovo Yoga Tab3:
<head/><style>.personal-details h2{font-size:34px}.netmetering-tgle{position:absolute;left:0;right:0;bottom:5px;width:211px}.netmetering-tgle .wnm{float:left;position:relative;padding:0 10px 0 0;min-width:130px;text-align:center}.netmetering-tgle .wnm a{color:#c97511;background:none}#radioBtn .btn{border:1px solid transparent;border-radius:0!important;font-family:"Din-Bold"}#radioBtn .notActive{color:#c97511;background-color:#e0e1e2;padding:2px 0;width:38px;background-size:100% 100%;border-color:transparent;font-family:"Din-Bold";border-radius:5px}#radioBtn .active{color:#fff;background-color:#addc6f;border-color:transparent;padding:2px 5px;width:38px;cursor:auto;pointer-events:none;border-radius:5px;box-shadow:inset 0 0 10px rgba(0,0,0,.8)}#radioBtn .notActive[data-
So response is incorrect on Yoga Tab3.
Here is the code I am using to connect with Server :
public static String connectToServerUsingGETMethod(String API_COMPLETE_URL){
URL url;
HttpURLConnection urlConnection = null;
try {
url = new URL(API_COMPLETE_URL);
urlConnection = (HttpURLConnection) url.openConnection();
InputStream in = urlConnection.getInputStream();
InputStreamReader isr = new InputStreamReader(in);
String line = "";
BufferedReader reader = new BufferedReader(isr);
StringBuilder sb = new StringBuilder();
while ((line = reader.readLine()) != null) {
sb.append(line);
}
//get the string version of the response data
return sb.toString();
} catch (Exception e) {
e.printStackTrace();
} finally {
if (urlConnection != null) {
urlConnection.disconnect();
}
}
return "";
}
Suggest me If I can add something in this code so that it can work on Yoga Tab 3 too.
I think you should set static content type when making request to make sure the response sent back is JSON. Similarly, it looks like below:
HttpURLConnection urlConnection = null;
urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setRequestProperty("Content-Type", "application/json; charset=UTF-8");
Hope it works for you.
I have been running into a very strange problem. I am trying to implement log in service in my app. When I pass right email and password service returns response as expected(means no error comes) but when I delibrately pass wrong email or password geInputStream() method throws FileNotFoundException. I don't know what is the reason behind this.Further more, before calling getInputStream() method i checked status code as well(this is the case when I am passing wrong email and password intentionally).The status code was 500. I checked for 500 and that was internal server error. My question is why is that so? I mean when intentionally passing wrong email or password why internal server occurred? One more thing I would like to mention that I have checked the same service on post man it is working fine as expected. If i pass wrong email or password postman returns the expected error. Below is the code I am using
private String invokeWebservice() {
String data = null;
HttpURLConnection conn = null;
BufferedReader in = null;
try {
String webservice = Constants.BASE_URL + serviceName;
LogUtility.debugLog("webservice just called "+ webservice);
URL url = new URL(webservice);
conn = (HttpURLConnection) url.openConnection();
conn.setReadTimeout(10000);
conn.setConnectTimeout(15000);
conn.setUseCaches(false);
if (isPost) {
conn.setDoOutput(true);
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Type", "application/json");
conn.setRequestProperty("Accept", "application/json");
Writer writer = new BufferedWriter(new OutputStreamWriter(conn.getOutputStream(), "UTF-8"));
if (jsonObject != null)
writer.write(jsonObject.toString());
writer.close();
}
in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
StringBuffer sb = new StringBuffer("");
String l = "";
String nl = System.getProperty("line.separator");
while ((l = in.readLine()) != null)
sb.append(l + nl);
in.close();
data = sb.toString();
return data;
} catch (Exception e) {
LogUtility.errorLog("exception while calling web service");
} finally {
try {
if (conn != null)
conn.disconnect();
if (in != null)
in.close();
} catch (Exception ex) {
// LogUtility.errorLogWithException(ex, ex.getMessage());
}
}
return data;
}
Any help?
After spending some time now I was able to solve my problem.Posting my answer for others. Passing wrong email and password to the service was right and server was consuming those parameters as well and because there was an error(because email and password) that is why it was returning 500 code. So, I checked for status code if it was 200 then I used getInputStream() method and else i called getErrorStream() method. By this way i got the stream that has property for error(this property contains error detail). Below is the code i used
if (conn.getResponseCode() != HttpURLConnection.HTTP_OK) {
in = new BufferedReader(new InputStreamReader(conn.getErrorStream()));
} else {
in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
}
Hope it helps other as well.
i am trying to send a JSONObject as input parameter for a C# Web API with the following code
protected String doInBackground(JSONObject... companyInfo) {
try {
URL url;
URLConnection urlConn;
url = new URL(HOST_NAME + WEB_API_METHOD);
urlConn = url.openConnection();
urlConn.setDoInput(true);
urlConn.setDoOutput(true);
urlConn.setUseCaches(false);
urlConn.setRequestProperty("Content-Type", "application/json");
urlConn.setRequestProperty("Host", HOST_NAME);
urlConn.connect();
PrintWriter out = new PrintWriter(urlConn.getOutputStream());
out.print(companyInfo[0]);
out.close();
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(urlConn.getInputStream()));
StringBuilder stringBuilder = new StringBuilder();
String line;
while ((line = bufferedReader.readLine()) != null) {
stringBuilder.append(line).append("\n");
}
bufferedReader.close();
Log.i("companyInfo > ", stringBuilder.toString());
}
catch (Exception ex)
{
Log.e("Exception", ex.getLocalizedMessage());
}
return null;
}
When this is called, the method doesn't execute and when i try to catch the error, i don't get a meaningful message. it shows the URL name and thats it.
I am unable to find the issue and any help would be appreciated.
this is the error i got
java.io.FileNotFoundException: http://MY_FULL_URL
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:238)
at com.fourtyninetons.NewCompanyActivity$saveCompanyProfile.doInBackground(NewCompanyActivity.java:103)
at com.fourtyninetons.NewCompanyActivity$saveCompanyProfile.doInBackground(NewCompanyActivity.java:70)
at android.os.AsyncTask$2.call(AsyncTask.java:295)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
at java.lang.Thread.run(Thread.java:818)
Lakshman.
As mentioned in the solution of this question, the problem is with the web api method and the backend database. Fiddler helped me solve the issue and the above code is working fine.
Useful Tip: When anyone gets this FileNotFoundExceptionuser POSTMAN or FIDDLER to execute the method and find for the errors.
Thank you everyone who attempted to solve this.
Today I'm making my first attempt of sending a POST request with a JSON to save some data, and I'm not being able to do so.
My app works by signing in, and then save, modify and delete data. It's already done in iOS, but since I'm new to Android, I'm not sure how to do it.
Here's my POST function:
public String POST(String targetURL, String urlParameters, String user, String pwd) {
URL url;
String u = targetURL;
HttpURLConnection connection = null;
try {
// Create connection
// u=URLEncoder.encode(u, "UTF-8");
url = new URL(u);
connection = (HttpURLConnection) url.openConnection();
// cambiarlo luego al usuario q esta logeado
String login = user + ":" + pwd;
String encoding = new String(org.apache.commons.codec.binary.Base64.encodeBase64(org.apache.commons.codec.binary.StringUtils.getBytesUtf8(login)));
connection.setRequestMethod("POST");
connection.setRequestProperty("Authorization", "Basic " + encoding);
connection.setRequestProperty("Content-Type", "plain/text");// hace q sirva con el string de json
connection.setRequestProperty("Content-Length", "" + Integer.toString(urlParameters.getBytes().length));
connection.setRequestProperty("Content-Language", "en-US");
connection.setUseCaches(false);
connection.setDoInput(true);
connection.setDoOutput(true);
connection.setReadTimeout(120000);
// Send request
DataOutputStream wr = new DataOutputStream(connection.getOutputStream());
wr.writeBytes(urlParameters);
wr.flush();
wr.close();
// Get Response
InputStream is = connection.getInputStream();
BufferedReader rd = new BufferedReader(new InputStreamReader(is));
String line;
StringBuffer response = new StringBuffer();
this.setResponseCode(connection.getResponseCode());
while ((line = rd.readLine()) != null) {
response.append(line);
response.append('\r');
}
rd.close();
return response.toString();
} catch (Exception e) {
e.printStackTrace();
return null;
} finally {
if (connection != null) {
connection.disconnect();
}
}
}
The method above is executed with Asynctask, and even if I use it to Login using Spring security, it works, and even I can save for internal usage the username, password, and secret token.
I dunno if I need to put the token in a header or something, because I already did that, with no positive results.
I'm supposing that the only permission I need to execute this is the internet one, so in my manifest file I specified that permission.
I'm going crazy with this issue, please help!
Thanks in advance.
EDIT:
Sorry guys, I'm kinda new to this way of asking, and also, not an English native speaker :P
The output I receive after sending the request, is the HTML of the page that handles logging in into the web app... I need like a json response or something like that to make sure the request was saved correctly
Try handling your cookies
CookieManager cookieManager = new CookieManager();
CookieHandler.setDefault(cookieManager);
This should be a singleton.
I'm trying to do a post method for a REST service, but I'm not getting any response from server:
public JSONObject postValues (String strUrl, String strJsonArray) throws Exception{
JSONObject jsonObject = null;
URL url = new URL(strUrl);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setReadTimeout(10000);
conn.setConnectTimeout(15000);
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
strJsonArray = "data=" + strJsonArray;
Log.e("result",""+strJsonArray);
OutputStream os = conn.getOutputStream();
os.write(strJsonArray.getBytes());
os.flush();
conn.connect();
if (conn.getResponseCode() != 200) {
throw new RuntimeException("Failed : HTTP error code : "
+ conn.getResponseCode());
}
BufferedReader br = new BufferedReader(new InputStreamReader(
(conn.getInputStream())));
String output;
StringBuilder sb = new StringBuilder();
System.out.println("Output from Server .... \n");
while ((output = br.readLine()) != null) {
Log.e("output",output);
sb.append(output);
}
Log.e("output",sb.toString());
jsonObject = new JSONObject(sb.toString());
conn.disconnect();
return jsonObject;
}
When I see my logCat a get:
output {}
I know that the server is working right because I'm using the "advanced REST client" plugin of google chrome. If I call the URL manually (using the plugin of course)I get the desired answer:
{"message":"OK","code":200}
But if I try to use my function, my strJsonArray is inserted but I get an empty respond from server.
Is there anything wrong with my code?.
Everything looks good...
You could use Wireshark to capture the packets sent to and received from the server using an emulator and the chrome rest client. Then you can compare them and maybe find out what's wrong.
You could also check if theres something in the error stream (conn.getErrorStream()).