Examples of java.net.HttpURLConnection

java.net.HttpURLConnection
3.org/pub/WWW/Protocols/"> the spec for details.
Each HttpURLConnection instance is used to make a single request but the underlying network connection to the HTTP server may be transparently shared by other instances. Calling the close() methods on the InputStream or OutputStream of an HttpURLConnection after a request may free network resources associated with this instance but has no effect on any shared persistent connection. Calling the disconnect() method may close the underlying socket if a persistent connection is otherwise idle at that time. @see java.net.HttpURLConnection#disconnect() @since JDK1.1


    Model model = ModelFactory.createDefaultModel();
    model.read(new File("testdata/danbri-20060920123618661.rdf").toURL()
        .toString());
    model = LeanDiffPatch.leanify(model);
    HttpURLConnection connection = (HttpURLConnection) sourceURL
        .openConnection();
    connection.addRequestProperty("Cookie", "login=beta:tester");
    connection.setDoOutput(true);
    connection.setRequestMethod("PUT");
    OutputStream out = connection.getOutputStream();
    model.write(out);
    int responseCode = connection.getResponseCode();
    assertEquals(200, responseCode);
    connection.disconnect();
    Model retrievedModel = ModelFactory.createDefaultModel();
    retrievedModel.read(sourceURL.toString());
    assertTrue("Retrieved model isomorphic to equals", model.isIsomorphicWith(retrievedModel));
    webServer.stop();

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    Model model = ModelFactory.createDefaultModel();
    model.read(new File("testdata/danbri-20060920123618661.rdf").toURL()
        .toString());
    model = LeanDiffPatch.leanify(model);
    HttpURLConnection connection = (HttpURLConnection) sourceURL
        .openConnection();
    connection.addRequestProperty("Cookie", "login=beta:wrong");
    connection.setDoOutput(true);
    connection.setRequestMethod("PUT");
    OutputStream out = connection.getOutputStream();
    model.write(out);
    int responseCode = connection.getResponseCode();
    assertEquals(403, responseCode);
    connection.disconnect();
    webServer.stop();


  }

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   */
  private SliceResponse getSlice(URL remoteService, String source, Date date) {
    try {
      log.info("getting slice of " + source + " at " + date);
      URL sliceURL = getSliceURL(remoteService, source, date);
      HttpURLConnection connection = (HttpURLConnection) sliceURL
          .openConnection();
      String gvsFollowing = connection.getHeaderField("X-GVS-Following");
      Date nextFollowing = null;
      if (gvsFollowing != null) {
        StringTokenizer tokenizer = new StringTokenizer(gvsFollowing,
            ",");
        try {
          String nextFollowingString = tokenizer.nextToken();
          nextFollowing = millisDateFormat.parse(nextFollowingString);
        } catch (NoSuchElementException e) {
        } catch (ParseException e) {
          throw new RuntimeException(e);
        }
      }
      Model model = ModelFactory.createDefaultModel();
      model.read(connection.getInputStream(), sliceURL.toExternalForm());
      // model.write(System.out);
      return new SliceResponse(model, nextFollowing);
    } catch (IOException e) {
      throw new RuntimeException(e);
    }

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  private void downloadSource(Source source) {
    log.info("Spidering: "+source);
    Model downloadModel = ModelFactory.createDefaultModel();
    try {
      URL url = new URL(source.getURIRef());
      HttpURLConnection connection = (HttpURLConnection) url.openConnection();
      connection.setInstanceFollowRedirects(false);
      connection.addRequestProperty(HeaderName.ACCEPT.toString(), "application/rdf+xml; q=1, application/xml; q=.9, text/xml; q=.8, */*; q=.1");
      connection.setReadTimeout(3000);
      connection.connect();
      int responseCode = connection.getResponseCode(); 
      if (responseCode != 200) {
        log.info("Response code: "+connection.getResponseCode());
        if ((responseCode >= 300) && (responseCode < 400)) {
          String location = connection.getHeaderField(HeaderName.LOCATION.toString());
          if (location != null) {
            connection.disconnect();
            downloadSource(new SourceImpl(location));
          }
        }
        
        return;
      }
      downloadModel.read(connection.getInputStream(), source.getURIRef());
      store.assertGraph(source, new FCAGraphImpl(downloadModel));
      connection.disconnect();
    } catch (MalformedURLException e) {
      throw new RuntimeException(e);
    } catch (IOException e) {
      throw new RuntimeException(e);
    } finally {

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            for (String parameter : keys) {
                URL = URL + parameter + "=" + workItem.getParameter(parameter) + "&";
            }




            HttpURLConnection connection;
            
            URL getUrl = new URL(URL);
            connection = (HttpURLConnection) getUrl.openConnection();
            connection.setRequestMethod("GET");
            System.out.println("Content-Type: " + connection.getContentType());


            BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));


            String line = reader.readLine();
            String response = "";
            while ((line = reader.readLine()) != null) { 
                response +=line;
            } 


            setHttpResponseCode(connection.getResponseCode());


            
            this.results = parseResults(response);
            
            System.out.println("" + response);
            connection.disconnect();


        } catch (MalformedURLException ex) {
            Logger.getLogger(RestGeoCodeApiCallWorkItemHandler.class.getName()).log(Level.SEVERE, null, ex);
        } catch (IOException ex) {
            Logger.getLogger(RestGeoCodeApiCallWorkItemHandler.class.getName()).log(Level.SEVERE, null, ex);

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public class JSONCodecTest extends TestCase {
  public static final String END_POINT = "http://localhost:8080/album/json/picasa";
  
  protected String postOnEndPoint(String postBody) throws MalformedURLException, IOException {
    HttpURLConnection connection = (HttpURLConnection) new URL(END_POINT).openConnection();
    connection.setRequestProperty("Content-Type", "application/json");
    connection.setDoOutput(true);
    connection.getOutputStream().write(postBody.getBytes());
    BufferedReader bufReader = new BufferedReader(new InputStreamReader(connection.getResponseCode() < 300 ? connection.getInputStream() :
      connection.getErrorStream()));
    StringBuffer buf = new StringBuffer();
    String str = bufReader.readLine();
    while(str != null){
      buf.append(str);
      str = bufReader.readLine();

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import com.jsonws.JSONCodecTest;


public class TestCheckEndPonitDocument extends JSONCodecTest{
  
  public void testEndpointDocument() throws MalformedURLException, IOException{
    HttpURLConnection connection = (HttpURLConnection) new URL(END_POINT).openConnection();
    assertEquals(connection.getResponseCode(), 200);
    
    connection = (HttpURLConnection) new URL(END_POINT + "?config").openConnection();
    assertEquals(connection.getResponseCode(), 200);
  }

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     *
     * @param url the HTTP URL
     * @return the HTML as a string
     */
    String get(String url) throws IOException {
        HttpURLConnection conn = (HttpURLConnection) new URL(url).openConnection();
        conn.setRequestMethod("GET");
        conn.setInstanceFollowRedirects(true);
        if (acceptLanguage != null) {
            conn.setRequestProperty("accept-language", acceptLanguage);
        }
        conn.connect();
        int code = conn.getResponseCode();
        contentType = conn.getContentType();
        if (code != HttpURLConnection.HTTP_OK) {
            throw new IOException("Result code: " + code);
        }
        InputStream in = conn.getInputStream();
        String result = IOUtils.readStringAndClose(new InputStreamReader(in), -1);
        conn.disconnect();
        return result;
    }

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     * @param fileName the file name to post
     * @param in the input stream
     * @return the result
     */
    String upload(String url, String fileName, InputStream in) throws IOException {
        HttpURLConnection conn = (HttpURLConnection) new URL(url).openConnection();
        conn.setDoOutput(true);
        conn.setDoInput(true);
        conn.setUseCaches(false);
        conn.setRequestMethod("POST");
        conn.setRequestProperty("Connection", "Keep-Alive");
        String boundary = UUID.randomUUID().toString();
        conn.setRequestProperty("Content-Type", "multipart/form-data;boundary="+boundary);
        conn.connect();
        DataOutputStream out = new DataOutputStream(conn.getOutputStream());
        out.writeBytes("--" + boundary + "--\r\n");
        out.writeBytes("Content-Disposition: form-data; name=\"upload\";"
                + " filename=\"" + fileName +"\"\r\n\r\n");
        IOUtils.copyAndCloseInput(in, out);
        out.writeBytes("\r\n--" + boundary + "--\r\n");
        out.close();
        int code = conn.getResponseCode();
        if (code != HttpURLConnection.HTTP_OK) {
            throw new IOException("Result code: " + code);
        }
        in = conn.getInputStream();
        String result = IOUtils.readStringAndClose(new InputStreamReader(in), -1);
        conn.disconnect();
        return result;
    }

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            System.setProperty("http.proxyHost", "");
            System.setProperty("http.proxyPort", "" + -1);
        }


        try {
            HttpURLConnection uc = (HttpURLConnection) url.openConnection();
            if (useProxy && username.trim().length() > 0) {
            String proxyUPB64 = Base64.encode(username + ":" + password);
            uc.setRequestProperty("Proxy-Authorization", "Basic " + proxyUPB64);
            }
            
            uc.setRequestMethod("GET");
            uc.setDoOutput(true);
            uc.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible;MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322; InfoPath.1; .NET CLR2.0.50727)");
            
            return uc;
        } catch (IOException ie) {
            throw new HttpConnectionException(ie);
        }

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