Examples of org.apache.http.client.HttpClient

org.apache.http.client.HttpClient
are a request object HttpGet httpget = new HttpGet("http://www.apache.org/"); // Execute the request HttpResponse response = httpclient.execute(httpget); // Examine the response status System.out.println(response.getStatusLine()); // 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 = entity.getContent(); try { BufferedReader reader = new BufferedReader( new InputStreamReader(instream)); // do something useful with the response System.out.println(reader.readLine()); } catch (IOException ex) { // In case of an IOException the connection will be released // back to the connection manager automatically throw ex; } catch (RuntimeException ex) { // In case of an unexpected exception you may want to abort // the HTTP request in order to shut down the underlying // connection and release it back to the connection manager. httpget.abort(); throw ex; } finally { // Closing the input stream will trigger connection release instream.close(); } } @author Roland Weber @version $Revision: 679523 $ @since 4.0

    List<Header> headers = new LinkedList<Header>();
    headers.add(new BasicHeader("Connection", "Close"));
    HttpParams params = new BasicHttpParams();
    params.setParameter("http.default-headers", headers);


    HttpClient httpclient = new DefaultHttpClient(params);
    HttpGet httpget = new HttpGet("http://localhost:" + PORT + "/capturing/r1911");
    HttpResponse response = httpclient.execute(httpget);


    assertNotNull(response);
    assertEquals(404, response.getStatusLine().getStatusCode());
    assertEquals(new ProtocolVersion("HTTP", 1, 1), response.getStatusLine().getProtocolVersion());
    assertEquals("Not Found", response.getStatusLine().getReasonPhrase());

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    // TODO RS 101026 Verify that the actual body/entity is 2145094 bytes big (when we have support for "large" file)
  }


  @Test
  public void noBodyRequest() throws ClientProtocolException, IOException {
    HttpClient httpclient = new DefaultHttpClient();
    HttpGet httpget = new HttpGet("http://localhost:" + PORT + "/no_body");
    HttpResponse response = httpclient.execute(httpget);
    List<String> expectedHeaders = Arrays.asList(new String[] {"Server", "Date", "Content-Length", "Connection"});


    assertEquals(200, response.getStatusLine().getStatusCode());
    assertEquals(new ProtocolVersion("HTTP", 1, 1), response.getStatusLine().getProtocolVersion());
    assertEquals("OK", response.getStatusLine().getReasonPhrase());

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    assertEquals("0", response.getFirstHeader("Content-Length").getValue());
  }


  @Test
  public void movedPermanentlyRequest() throws ClientProtocolException, IOException {
    HttpClient httpclient = new DefaultHttpClient();
    HttpGet httpget = new HttpGet("http://localhost:" + PORT + "/moved_perm");
    HttpResponse response = httpclient.execute(httpget);
    List<String> expectedHeaders = Arrays.asList(new String[] {"Server", "Date", "Content-Length", "Connection", "Etag"});


    assertEquals(200, response.getStatusLine().getStatusCode());
    assertEquals(new ProtocolVersion("HTTP", 1, 1), response.getStatusLine().getProtocolVersion());
    assertEquals("OK", response.getStatusLine().getReasonPhrase());

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    assertEquals("Authentication failed", payLoad);
  }
  
  @Test
  public void queryParamsTest() throws ClientProtocolException, IOException {
    HttpClient httpclient = new DefaultHttpClient();
    HttpGet httpget = new HttpGet("http://localhost:" + PORT + "/query_params?key1=value1&key2=value2");
    HttpResponse response = httpclient.execute(httpget);
    List<String> expectedHeaders = Arrays.asList(new String[] {"Server", "Date", "Content-Length", "Etag", "Connection"});


    assertEquals(200, response.getStatusLine().getStatusCode());
    assertEquals(new ProtocolVersion("HTTP", 1, 1), response.getStatusLine().getProtocolVersion());
    assertEquals("OK", response.getStatusLine().getReasonPhrase());

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      server.deploy(archive);


      try
      {
         // Get an HTTP Client
         final HttpClient client = new DefaultHttpClient();


         // Make an HTTP Request
         final String echoValue = "EmbeddedBiatch";
         final List<NameValuePair> params = new ArrayList<NameValuePair>();
         params.add(new BasicNameValuePair("jsp", PATH_JSP));
         params.add(new BasicNameValuePair("echo", echoValue));
         final URI uri = URIUtils.createURI("http", "localhost", 8080,
               appName + SEPARATOR + servletClass.getSimpleName(), URLEncodedUtils.format(params, "UTF-8"), null);
         final HttpGet request = new HttpGet(uri);


         // Execute the request
         log.info("Executing request to: " + request.getURI());
         final HttpResponse response = client.execute(request);
         final HttpEntity entity = response.getEntity();
         if (entity == null)
         {
            TestCase.fail("Request returned no entity");
         }

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      server.deploy(archive);


      try
      {
         // Get an HTTP Client
         final HttpClient client = new DefaultHttpClient();


         // Make an HTTP Request
         final URI uri = URIUtils.createURI("http", "localhost", 8080,
               appName + SEPARATOR + servletClass.getSimpleName(), null, null);
         final HttpGet request = new HttpGet(uri);


         // Execute the request
         log.info("Executing request to: " + request.getURI());
         final HttpResponse response = client.execute(request);
         final HttpEntity entity = response.getEntity();
         if (entity == null)
         {
            TestCase.fail("Request returned no entity");
         }

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    for (Status status : statuses.status)
      System.out.println(status);
  }


  private static HttpClient createClient() {
    HttpClient httpClient = new DefaultHttpClient();
        
    // Use Proxy to access if you are in one of the countries that cannot connects to twitter directly.   
//    HttpHost proxy = new HttpHost("your_proxy_url", your_proxy_port);
//    httpClient.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY,
//        proxy);

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      // Create an HttpClient with the ThreadSafeClientConnManager.
      // This connection manager must be used if more than one thread will
      // be using the HttpClient.
      ClientConnectionManager cm = new ThreadSafeClientConnManager(params, schemeRegistry);
      HttpClient httpClient = new DefaultHttpClient(cm, params);


      final ApacheHttpClient4Executor executor = new ApacheHttpClient4Executor(httpClient);
      return executor;
   }

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      OutputStream outputStream = null;


      try {
        byte[] buffer = new byte[1024];


        final HttpClient httpClient = HttpXmlUtils.getHttpClient();
        final HttpGet method = new HttpGet(url);


        if (!_cancelled) {
          final HttpResponse response = httpClient.execute(method);


          if (response.getStatusLine().getStatusCode() != 200) {
            throw new InvalidHttpResponseException(url, response);
          }

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        res.setSampleLabel(url.toString()); // May be replaced later
        res.setHTTPMethod(method);
        res.setURL(url);


        HttpClient httpClient = setupClient(url);
        
        HttpRequestBase httpRequest = null;
        try {
            URI uri = url.toURI();
            if (method.equals(POST)) {
                httpRequest = new HttpPost(uri);
            } else if (method.equals(PUT)) {
                httpRequest = new HttpPut(uri);
            } else if (method.equals(HEAD)) {
                httpRequest = new HttpHead(uri);
            } else if (method.equals(TRACE)) {
                httpRequest = new HttpTrace(uri);
            } else if (method.equals(OPTIONS)) {
                httpRequest = new HttpOptions(uri);
            } else if (method.equals(DELETE)) {
                httpRequest = new HttpDelete(uri);
            } else if (method.equals(GET)) {
                httpRequest = new HttpGet(uri);
            } else {
                throw new IllegalArgumentException("Unexpected method: "+method);
            }
            setupRequest(url, httpRequest, res); // can throw IOException
        } catch (Exception e) {
            res.sampleStart();
            res.sampleEnd();
            HTTPSampleResult err = errorResult(e, res);
            err.setSampleLabel("Error: " + url.toString());
            return err;
        }


        HttpContext localContext = new BasicHttpContext();


        res.sampleStart();


        final CacheManager cacheManager = getCacheManager();
        if (cacheManager != null && GET.equalsIgnoreCase(method)) {
           if (cacheManager.inCache(url)) {
               res.sampleEnd();
               res.setResponseNoContent();
               res.setSuccessful(true);
               return res;
           }
        }


        try {
            currentRequest = httpRequest;
            // Handle the various methods
            if (method.equals(POST)) {
                String postBody = sendPostData((HttpPost)httpRequest);
                res.setQueryString(postBody);
            } else if (method.equals(PUT)) {
                String putBody = sendPutData((HttpPut)httpRequest);
                res.setQueryString(putBody);
            }
            HttpResponse httpResponse = httpClient.execute(httpRequest, localContext); // perform the sample


            // Needs to be done after execute to pick up all the headers
            res.setRequestHeaders(getConnectionHeaders((HttpRequest) localContext.getAttribute(ExecutionContext.HTTP_REQUEST)));


            Header contentType = httpResponse.getLastHeader(HEADER_CONTENT_TYPE);

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