I'm doing a GET request with version 4.3.3 of Apache HttpClient, like this:
HttpGet httpGet = new HttpGet("http://www.revenue.ie/en/tax/it/forms/med1.pdf");
CloseableHttpClient client = HttpClients.createDefault();
CloseableHttpResponse response = client.execute(httpGet);
client.close();
The response status code tells me 200, and the content length as returned by response.getEntity().getContentLength() is 1213954, but the InputStream as returned from a call to:
response.getEntity().getContent()
...is reporting 0 bytes available.
I have been successfully making GET calls like this to retrieve and parse the HTML of other URLs, but is there something different I need to do here since it's file contents that I'm interested in?
The problem was that I was closing the http client too early i.e. client.close() before I tried to retrieve the response InputStream with a call to response.getEntity().getContent().
Related
I am trying to write a video downloader from kissanime.to . I am using HttpClient library. This site is using cloudflare. It redirects after 5 secs. How can I set so my application will go to the redirected link? My code below isnt working. Where am I going wrong and how can I fix it.
HttpGet request = new HttpGet(url);
HttpClient httpClient = HttpClientBuilder.create()
.setRedirectStrategy(new LaxRedirectStrategy()).build();
HttpResponse response = httpClient.execute(request);
HttpEntity entity = response.getEntity();
String entityContents = EntityUtils.toString(entity);`
It means that given site is under DDOS protection mode (maybe you try to open it too often?) to workaround you would need to stop hitting it that much (e.g. wait some time between tries). Or if you insist use some javascript executing library (Rhino?) that would execute javascript that cloudflare is using.
I have a php script that makes a few api calls in a row and once an api call has
returned data the script outputs the content. Meaning if you call the script on
the browser you will wait 1 second then see some content appear, than after 2 seconds
more content will be appended to the page and so on.
The thing is I am accessing this content from java/android in one of my apps.
Is there a way I can read this content from java WHILE it is updating? This
way I will populate the application content as new data is being fetched from
the script.
I have tried something like this when I have accessed xml files but they
were not continuously updating.
try {
// defaultHttpClient
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
xml = EntityUtils.toString(httpEntity);
}
Yes, use URLConnection instead of HttpClient. Here's a tutorial.
Like in the tutorial, connection.getInputStream() will return a stream you can read and process, for example line-wise.
I'm writing a network android application that uses http requests to get data. The data is HTML format. I use Apache HttpClient and JSoup.
When I'm out of traffic with my mobile internet provider, I am always redirected to the providers' page saying that I should pay some money. Of course, it is a bad idea to parse this page.
How to detect occured page substitution?
This code will help you to know with is the final target of your request, if isn't the page that you asked for, is the provider page.
DefaultHttpClient httpclient = new DefaultHttpClient();
HttpContext localContext = new BasicHttpContext();
HttpGet httpget = new HttpGet("http://www.google.com/");
HttpResponse response = httpclient.execute(httpget, localContext);
HttpHost target = (HttpHost) localContext.getAttribute(
ExecutionContext.HTTP_TARGET_HOST);// this is the final page of the request
System.out.println("Final target: " + target);
HttpEntity entity = response.getEntity();
EntityUtils.consume(entity);
Thanks
If your provider is lying to you by immediately returning a 200 OK but not giving you the resource you've requested, your best option is probably to set a custom HTTP response header that your client can check before continuing.
I am suppose to send song (mp3/wav) file and some data through secure restful web service. I am using MultipartEntity to make HttpPost request. but When I execute it through HttpClient, the server replies this error
HTTP Status 400 - Bad Request
type: Status report
message : Bad Request
The request sent by the client was syntactically incorrect (Bad Request).
But the service is doing very well if we call it from its Web interface. please help
its the code
HttpClient httpclient = new DefaultHttpClient();
HttpPost postRequest = new HttpPost();
try {
MultipartEntity reqEntity = new MultipartEntity();
reqEntity.addPart("email", new StringBody("test#testmail.com"));
reqEntity.addPart("password", new StringBody("123"));
reqEntity.addPart("title", new StringBody("My new song"));
reqEntity.addPart("musicData", new FileBody(new File(FilePath)));
// FIlePath is path to file and contains correct file location
postRequest.setEntity(reqEntity);
postRequest.setURI(new URI(ServiceURL));
HttpResponse response = httpclient.execute(postRequest);
} catch (URISyntaxException e) {
Log.e("URISyntaxException", e.toString());
}
I also included apache-mime4j, httpclient, httpcore and httpmime jars for MultipartEntity.
This is HTML page snap for the Service.
Try removing the setURI method and passing the URL in when you create your HttpPost object, as follows. This worked for me (more here).
HttpClient httpclient = new DefaultHttpClient();
HttpPost postRequest = new HttpPost(ServiceURL);
try {
MultipartEntity reqEntity = new MultipartEntity();
reqEntity.addPart("email", new StringBody("test#testmail.com"));
reqEntity.addPart("password", new StringBody("123"));
reqEntity.addPart("title", new StringBody("My new song"));
reqEntity.addPart("musicData", new FileBody(new File(FilePath)));
postRequest.setEntity(reqEntity);
HttpResponse response = httpclient.execute(postRequest);
} catch (URISyntaxException e) {
Log.e("URISyntaxException", e.toString());
}
It seems header of the request is incorrect, this problem can occur if you use a different Auth protocol or upper/lower case or simply wrong things in header that server side can't handle.
Dont waste your time by trying different different combinations.There are some HTTP Request tools available for HTTP with which you can track request and response you are getting.Ex. HTTP Analyzer download trial version
Call URL from your working webinterface , copy request and response
then do same with from program the tool is enogh capable to capture your request and response data.
Now compare working and non working request you will surely able to dignose the issue whether it can be header issue or some authentication related issue.
I'm using DefaultHttpClient to make an http connection. I [think] we can set the preferred locale in the http headers [http accept-language] when making a connection, which the server can check and send back content in a matching language (if it wants).
Anyone know if this is possible, or how to go about doing this with DefaultHttpClient?
Thanks
You have to add your header to HttpRequest object
HttpClient client = new DefaultHttpClient();
HttpPost request = new HttpPost(URL);
request.addHeader("Accept-Language", "en");
HttpResponse response = client.execute(request);