I want to fire a blocking call to my php file which queries my db. I want it to be blocking and not async as i don't want the user shown anything until this call is successful or not.
I run the below code, it stops at response = httpclient.execute(httpget); for a minute or two before going into catch for error. I cant see an error in the e item.
Anybody know whats going on here - my php file works with async task.
public static String blockingHttpCallToUrl(String url)
{
String result="nothingReturned";
HttpClient httpclient = new DefaultHttpClient();
// Prepare a request object
HttpGet httpget = new HttpGet(url);
// Execute the request
HttpResponse response;
try {
response = httpclient.execute(httpget);
// Examine the response status
Log.i("Praeda", response.getStatusLine().toString());
// Get hold of the response entity
HttpEntity entity = response.getEntity();
// If the response does not enclose an entity, there is no need
// to worry about connection release
if (entity != null) {
// A Simple JSON Response Read
InputStream instream = entity.getContent();
result= convertStreamToString(instream);
// now you have the string representation of the HTML request
instream.close();
}
} catch (Exception e) {}
return result;
}
Related
Android HTTP PUT not sending JSON request to server resulting in HTTP 405 Method not allowed.
Below is my async task background code
HttpClient httpclient = new DefaultHttpClient();
HttpPut httpPut = new HttpPut("URL");
String jsonresponse = "";
try {
StringEntity se = new StringEntity(gson.toJson(resultPojo).toString());
se.setContentType("application/json;charset=UTF-8");//text/plain;charset=UTF-8
se.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE,"application/json;charset=UTF-8"));
httpPut.setEntity(se);
httpPut.setHeader("Accept", "application/json");
httpPut.setHeader("Content-type", "application/json");
HttpResponse response = httpclient.execute(httpPut);
HttpEntity httpEntity = response.getEntity();
jsonresponse = EntityUtils.toString(httpEntity);
System.out.println("res .... "+jsonresponse);
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
serverside code :
#POST
#Path("{id}")
#Produces(MediaType.APPLICATION_JSON)
#Consumes(MediaType.APPLICATION_JSON)
public Response submitUserResponse(#PathParam("userId") int userId,
#PathParam("id") int id, List<ResultPojo> responses) {
try {
//core logic goes here
return Response.status(Response.Status.CREATED).build();
} catch (Exception e) {
e.printStackTrace();
return Response.status(Response.Status.INTERNAL_SERVER_ERROR).build();
}
}
Alright just like what was discussed it is most likely a mismatch different HTTP methods, in this case A Put and a post, whenever you ever encounter that HTTP code(405) do perform a validation on the methods you used, it happens.405 errors often arise with the POST method. You may be trying to introduce some kind of input form on the Web site, but not all ISPs allow the POST method necessary to process the form.A request method is not supported for the requested resource; for example, a GET request on a form that requires data to be presented via POST, or a PUT request on a read-only resource.
I have a method to connect to send post data to a webservice and get the response back as follow:
public HttpResponse sendXMLToURL(String url, String xml, String httpClientInstanceName) throws IOException {
HttpResponse response = null;
AndroidHttpClient httpClient = AndroidHttpClient.newInstance(httpClientInstanceName);
HttpPost post = new HttpPost(url);
StringEntity str = new StringEntity(xml);
str.setContentType("text/xml");
post.setEntity(str);
response = httpClient.execute(post);
if (post != null){
post.abort();
}
if (httpClient !=null){
httpClient.close();
}
return response;
}
Then, in my AsyncTask of my fragment, I try to read the response using getEntity():
HttpResponse response = xmlUtil.sendXMLToURL("url", dataXML, "getList");
//Check if the request was sent successfully
if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
// Parse result to check success
responseText = EntityUtils.toString(response.getEntity());
if (!xmlParser.checkForSuccess(responseText, getActivity())){
//If webservice response is error
///TODO: Error management
return false;
}
}
And when I reach that line:
responseText = EntityUtils.toString(response.getEntity());
I get an exception: java.net.SocketException: Socket closed.
This behavior doesn't happen all the time, maybe every other time.
Just write
HttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost(your url);
HttpResponse response = client.execute(post);
it should work.No need to write codes which makes confusion.
I also experienced the 'socket closed' exception when using a client instance built using HttpClientBuilder. In my case, I was calling HttpRequestBase.releaseConnection() on my request object within a finally block before processing the response object (in a parent method). Flipping things around solved the issue... (working code below)
try {
HttpResponse response = httpClient.execute(request);
String responseBody = EntityUtils.toString(response.getEntity());
// Do something interesting with responseBody
} catch (IOException e) {
// Ah nuts...
} finally {
// release any connection resources used by the method
request.releaseConnection();
}
I am using http://hc.apache.org/httpcomponents-core-ga/httpcore/examples/org/apache/http/examples/ElementalHttpServer.java for Android.
I set the response using the following code:
HttpResponse getResponse = new BasicHttpResponse(HttpVersion.HTTP_1_1, 404, "Not Found");
getResponse.setEntity(new StringEntity(new String("The requested resource " + target + " could not be found due to mismatch!!")));
conn.sendResponseHeader(getResponse);
conn.sendResponseEntity(getResponse);
My response in Mozilla Poster or browser has the header 404 and the response body as:
The requested resource could not be found due to mismatch!!HTTP/1.1 200 OK
How can I get only the HTTP body String? Why am I getting HTTP/1.1 200 OK in response. I dont set this in my code. Any help is appreciated.
this might help you...
i think response is what you need
HttpClient client = new DefaultHttpClient();
HttpResponse httpResponse;
try {
httpResponse = client.execute(request);
responseCode = httpResponse.getStatusLine().getStatusCode();
message = httpResponse.getStatusLine().getReasonPhrase();
HttpEntity entity = httpResponse.getEntity();
if (entity != null) {
InputStream instream = entity.getContent();
response = convertStreamToString(instream);
// Closing the input stream will trigger connection release
instream.close();
}
} catch (ClientProtocolException e) {
client.getConnectionManager().shutdown();
e.printStackTrace();
} catch (IOException e) {
client.getConnectionManager().shutdown();
e.printStackTrace();
}
there was a problem in my defined handle() method. I was creating a new HttpResponse for each request instead of using the response passed in the
public void handle(HttpRequest request, HttpResponse response, HttpContext context)
I've an app that call a webservice. I've logged the time it takes to complete this call with and without GZIP. I ran the app 5 times with and 5 time without GZIP and it actually took longer with GZIP. So i can only think GZIP had no effect or i have implemented it badly. Any ideas why there is no change?
public String connect(String url) {
HttpClient httpclient = new DefaultHttpClient();
// Prepare a request object
HttpGet httpget = new HttpGet(url);
httpget.addHeader("Accept-Encoding", "gzip");
// Execute the request
HttpResponse response;
try {
long start = System.currentTimeMillis();
response = httpclient.execute(httpget);
// Examine the response status
Log.i(TAG, response.getStatusLine().toString());
// Get hold of the response entity
HttpEntity entity = response.getEntity();
// If the response does not enclose an entity, there is no need
// to worry about connection release
if (entity != null) {
InputStream instream = response.getEntity().getContent();
Header contentEncoding = response.getFirstHeader("Content-Encoding");
if (contentEncoding != null && contentEncoding.getValue().equalsIgnoreCase("gzip")) {
instream = new GZIPInputStream(instream);
}
// A Simple JSON Response Read
//InputStream instream = entity.getContent();
result = convertStreamToString(instream);
Log.i(TAG, result);
// A Simple JSONObject Creation
//json = new JSONObject(result);
// Closing the input stream will trigger connection release
instream.close();
long end = System.currentTimeMillis();
long elapsed = (end - start);
Log.e(TAG, "web call took ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^" + elapsed);
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return result;
}
.
RESULTS:
Without GZIP: average of 5 runs = 2923ms
With GZIP: average of 5 runs = 3179ms
There are at least two major contributions in the timing:
client side: connection speed vs. decoding speed
server side: connection speed vs. encoding speed
The gzip encoding can be static or dynamic on the server side. For some content it would make sense to store query data in already compressed form. For some content it can't be done and the server may have the "compression engine" occupied.
The timings are likely to change between ADSL, WLAN or direct ethernet connections.
Anyone ever called the setlist.fm API from Android? I'm trying to execute the following code:
DefaultHttpClient client = new DefaultHttpClient();
HttpGet getRequest;
try
{
getRequest = new HttpGet(url);
HttpResponse getResponse = client.execute(getRequest);
HttpEntity getResponseEntity = getResponse.getEntity();
return getResponseEntity.getContent();
}
catch (Exception e)
{
Log.w(getClass().getSimpleName(), "Error for URL " + url, e);
return null;
}
But I run into 2 issues it seems. The execute always seems to return correctly with a statusline of 200, but when I try to get the entity the length is -1 even though the response object shows a basichttpentity object was returned. Also, when I try to call getContent it blows up for some reason with a generic exception. A sample API call that I'm trying to use is http://api.setlist.fm/rest/0.1/search/setlists.json?artistName=Prince.
Any suggestions would be gladly welcomed.
Thanks!
I figured out the issue. It seems that the response coming back from the API is streamed and comes in chunks and I was attempting to grab the entity before it was finished. I removed this code:
HttpEntity getResponseEntity = getResponse.getEntity();
return getResponseEntity.getContent();
And replaced it with:
return EntityUtils.toString(getResponse.getEntity());