Here is my code:
urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setRequestMethod("GET");
urlConnection.connect();
int status = urlConnection.getResponseCode();
// Read the input stream into a String
InputStream inputStream = urlConnection.getInputStream();
StringBuffer buffer = new StringBuffer();
if (inputStream == null) {
return;
}
reader = new BufferedReader(new InputStreamReader(inputStream));
Here is example of my JSON:
[{"Id":1,"Name":"Алупка","RegionId":1},{"Id":2,"Name":"Алушта","RegionId":1},{"Id":3,"Name":"Армянськ","RegionId":1}]
Here is URL: http://donor.ua/api/cities?sign=9u1AARsgKybup3vz9CaQnw==ivbCaKmrWpgz
But urlConnection.getResponseCode() still returns "403".
Please, tell me how to fix this!
Thanks in advance!
When I try to load the URL you provided in the question, it says that HTTPS is required. Using Firebug, I confirmed that the server is in fact returning 403 in this case. Changing the protocol from http to https returns the JSON as expected. So, in your code, when you create your URL object, make sure that the URL you specified starts with https:// instead of http://
The error could be due to server is rejecting the connection due to you are not sending "User-Agent".
add this line in order to fix it:
connection.addRequestProperty("User-Agent", "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:25.0) Gecko/20100101 Firefox/25.0");
Related
I have this situation: there is a Jersey rest web service working via HTTPS. I'm working on an Android code that will POST Json to that service and read response. I managed to connect, from API log i can see that call has been received and no errors are displayed, i also get data in the "InputStream" of the connection, but data is encrypted! Even when i try using plain HTTP connection and run web service in HTTP mode result is the same.
What confuses me is that equal cURL request produces proper output without any issues... Where am i wrong? This is the code i'm using:
URL url = new URL("https://myServer:8780/api/<apicall>");
HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();
// Create the SSL connection
SSLContext sc;
sc = SSLContext.getInstance("TLS");
sc.init(null, null, new java.security.SecureRandom());
conn.setSSLSocketFactory(sc.getSocketFactory());
// set Timeout and method
conn.setReadTimeout(7000);
conn.setConnectTimeout(7000);
conn.setRequestMethod("POST");
conn.setDoInput(true);
conn.setRequestProperty("Accept-Encoding", "gzip");
conn.setRequestProperty("Accept", "application/json");
// Add any data you wish to post here
String json = "{\"test\":\"hello\"}";
byte[] bytes = json.getBytes("UTF-8");
OutputStream out = conn.getOutputStream();
out.write(bytes);
out.flush();
out.close();
String result = new String();
InputStream is = null;
/*if ("gzip".equals(conn.getContentEncoding()))
is = new GZIPInputStream(conn.getInputStream()); THIS WOULD FAIL WITH ERROR MESSAGE THAT CONTENT IS NOT IN GZIP FORMAT!
else*/
is = conn.getInputStream();
BufferedReader in = new BufferedReader(new InputStreamReader(is));
String inputLine;
while ((inputLine = in.readLine()) != null) {
result += inputLine;
}
In the same time, this cURL call (i'm using Linux) works perfectly and returns expected JSON response from the server:
curl -H 'Accept-Encoding: gzip' -X POST https://myServer:8780/api/<apicall> -d '{"test":"hello"}'
EDIT Issue was caused by my server using both "Content-encoding: gzip" and "Transfer-encoding: gzip". When i removed "Transfer-Encoding" issue was solved!
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 tried to fetch the website content from android.
in .NET, it can be done by
WebRequest request = HttpWebRequest.Create(threeROllrl);
WebResponse response = request.GetResponse();
StreamReader vr = new StreamReader(response.GetResponseStream());
string result = vr.ReadToEnd();
however, in android, i tried to use
URL url = new URL(urlstr);
urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setReadTimeout(8000 /* milliseconds */);
urlConnection.setConnectTimeout(8000 /* milliseconds */);
urlConnection.setRequestMethod("GET");
urlConnection.connect();
BufferedReader reader = null;
reader = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));
StringBuilder stringBuilder = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null)
{
stringBuilder.append(line + "\n");
}
but it returned different content (in android httpurlconnection, no html content is fetched at all, but the metadata, style and scripts only), i wanna if it is because the response are the mobile version, i want to how retrieve the desktop content of the website in the android httpurlconnection.
after checked, i have found that the android httpurlconnection is actually fetching the header of the website and some bottom content, but it cannot fetch middle body. or it is stopped for some unknown reason (but no error is found).
thanks
Change the User-agent header in your http request to be as a desktop
here is a list of user agent that you can use
I want to send my id & password to server and get the response from server. Here is my code. It is not working for the first time. But iam getting the response from server if i execute my application on second time. It is throwing "Post method failed: -1 null" on first time. Where iam wrong?? Why if() block is executing on first time?? could you please tell me.
HttpsURLConnection con = null;
String httpsURL = "https://www.abc.com/login";
String query = "id=xyz&password=pqr";
URL url = new URL(httpsURL);
con = (HttpsURLConnection) url.openConnection();
con.setRequestMethod("POST");
con.setRequestProperty("Content-length", String.valueOf(query.length()));
con.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
con.setRequestProperty("User-Agent","Mozilla/4.0(compatible; MSIE 5.0; Windows 98; DigExt)");
con.setDoInput(true);
con.setDoOutput(true);
DataOutputStream output = new DataOutputStream(con.getOutputStream());
output.writeBytes(query);
output.close();
int respCode = con.getResponseCode();
if (respCode != HttpsURLConnection.HTTP_OK)
{
throw new Exception("POST method failed: " + con.getResponseCode()+ "\t" + con.getResponseMessage()); }
else {
//read the content from server
}
1/ It is recommanded to use apache HttpClient rather than URLConnection (see http://developer.android.com/reference/org/apache/http/impl/client/DefaultHttpClient.html)
2/ for login and password, why not use Http Authentication ? both basic and digest are supported by android.
3/ as for you problem, you don't close the underlying outputStream.
you should do:
OutputStream os = con.getOutputStream();
DataOutputStream output = new DataOutputStream(os);
output.writeBytes(query);
output.close();
os.close();
Check Server service validity with other technology and/or classic java. You didn say in your question if you succeed to discriminate the server from the issue.
from java doc ...getResponseCode returns -1 if no code can be discerned from the response (i.e., the response is not valid HTTP).
Java https post request example : http://www.java-samples.com/java/POST-toHTTPS-url-free-java-sample-program.htm
try to close your outputstream after querying the status and not before...that may help
Here is how you should send POST requests in Android
HttpPost httpGet = new HttpPost(server + "/login?email="+username+"&password="+password);
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpResponse response = httpClient.execute(httpGet);
You can read response using:
response.getEntity().getContent()
I have simple code :
URL url;
BufferedReader in = null;
HttpURLConnection connection;
InputStream is = null;
InputStreamReader br = null;
setProgressTitle(progress, context.getString(R.string.loading));
setProgressMessage(progress, context.getString(R.string.loading_from_internet));
try {
url = new URL(urlStr);
connection = (HttpURLConnection) url.openConnection();
connection.setConnectTimeout(Const.TIMEOUT);
is = connection.getInputStream();
...
If I have urlStr = "http://samlib.ru/w/waliduda_a_a/molochnischituran1.shtml" - all is work fine.
If I use urls like urlStr = "http://samlib.ru/cgi-bin/areader?q=jlist" - I got a error in connection.getInputStream();
**
03-04 15:37:52.459: ERROR/DataReader::loadDataFromInet(17281): Failed loading http://samlib.ru/cgi-bin/areader?q=jlist
03-04 15:37:52.459: ERROR/DataReader::loadDataFromInet(17281): java.io.FileNotFoundException: http://samlib.ru/cgi-bin/areader?q=jlist
03-04 15:37:52.459: ERROR/DataReader::loadDataFromInet(17281): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:521)
**
How can I upload data to a similar url?
There are a couple of reasons this might happen. Where I've personally seen it is when I've put in a URL that was subsequently redirected, HttpURLConnection doesn't handle that. I got the same response as you, I hit it with FF and it works fine. Its also possible that some sort of browser sniffing might be done on the recieving side.
Good Luck!
It looks like your cgi-bin/areader is not found. Getting an HTTP/404 response code:
wget http://samlib.ru/cgi-bin/areader?q=jlist
--2011-03-04 09:03:17-- http://samlib.ru/cgi-bin/areader?q=jlist
Resolving samlib.ru... 81.176.66.171
Connecting to samlib.ru|81.176.66.171|:80... connected.
HTTP request sent, awaiting response... 404 Not Found
2011-03-04 09:03:17 ERROR 404: Not Found.
Correct that then try again.