Example usage for java.net URLConnection connect

Introduction

In this page you can find the example usage for java.net URLConnection connect.

Prototype

public abstract void connect() throws IOException;

Source Link

Document

Opens a communications link to the resource referenced by this URL, if such a connection has not already been established.

Usage

From source file:servlet.GetCity.java

/**
 * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
 * methods.//from w w w .ja  v a 2s.  c  om
 *
 * @param request servlet request
 * @param response servlet response
 * @throws ServletException if a servlet-specific error occurs
 * @throws IOException if an I/O error occurs
 */

public String getData(String urlString) {
    String result = "";
    BufferedReader read = null;
    try {
        URL realurl = new URL(urlString);
        URLConnection connection = realurl.openConnection();
        connection.setRequestProperty("accept", "*/*");
        connection.setRequestProperty("connection", "Keep-Alive");
        connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
        connection.connect();
        Map<String, List<String>> map = connection.getHeaderFields();
        for (String key : map.keySet()) {
            System.out.println(key + "--->" + map.get(key));
        }
        read = new BufferedReader(new InputStreamReader(connection.getInputStream(), "UTF-8"));
        String line;
        while ((line = read.readLine()) != null) {
            result += line;
        }
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        if (read != null) {
            try {
                read.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }
    return result;
}

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From source file:org.pentaho.webpackage.deployer.archive.impl.WebPackageURLConnection.java

@Override
public InputStream getInputStream() throws IOException {
    try {/* www.j av a  2  s . c  om*/
        final PipedOutputStream pipedOutputStream = new PipedOutputStream();
        PipedInputStream pipedInputStream = new PipedInputStream(pipedOutputStream);

        // making this here allows to fail with invalid URLs
        final java.net.URLConnection urlConnection = this.url.openConnection();
        urlConnection.connect();
        final InputStream originalInputStream = urlConnection.getInputStream();

        this.transform_thread = EXECUTOR
                .submit(new WebPackageTransformer(this.url, originalInputStream, pipedOutputStream));

        return pipedInputStream;
    } catch (Exception e) {
        this.logger.error(getURL().toString() + ": Error opening url");

        throw new IOException("Error opening url", e);
    }
}

---

From source file:org.silverpeas.mobile.server.servlets.PublicationContentServlet.java

private String convertSpImageUrlToDataUrl(String url) {
    String data = url;// ww w  .j av a 2 s. co m
    if (url.contains("GalleryInWysiwyg")) {
        try {
            String instanceId = url.substring(url.indexOf("ComponentId") + "ComponentId".length() + 1);
            instanceId = instanceId.substring(0, instanceId.indexOf("&"));
            String imageId = url.substring(url.indexOf("ImageId") + "ImageId".length() + 1);
            imageId = imageId.substring(0, imageId.indexOf("&"));
            Photo photo = getGalleryService().getPhoto(new MediaPK(imageId));
            String[] rep = { "image" + imageId };

            String path = FileRepositoryManager.getAbsolutePath(null, instanceId, rep);
            File f = new File(path + photo.getFileName());

            FileInputStream is = new FileInputStream(f);
            byte[] binaryData = new byte[(int) f.length()];
            is.read(binaryData);
            is.close();
            data = "data:" + photo.getFileMimeType() + ";base64," + new String(Base64.encodeBase64(binaryData));
        } catch (Exception e) {
            SilverLogger.getLogger(SpMobileLogModule.getName())
                    .error("PublicationContentServlet.convertSpImageUrlToDataUrl", "root.EX_NO_MESSAGE", e);
        }
    } else if (url.contains("attachmentId")) {
        data = convertImageAttachmentUrl(url, data);
    } else {
        try {
            if (url.startsWith("/silverpeas")) {
                url = rootContext + url;
            }
            URL urlObject = new URL(url);
            URLConnection connection = urlObject.openConnection();
            connection.connect();
            String contentType = connection.getContentType();
            byte[] binaryData = new byte[(int) connection.getInputStream().available()];
            connection.getInputStream().read(binaryData);
            data = "data:" + contentType + ";base64," + new String(Base64.encodeBase64(binaryData));
        } catch (Exception e) {
            SilverLogger.getLogger(SpMobileLogModule.getName())
                    .error("PublicationContentServlet.convertImageUrlToDataUrl", "root.EX_NO_MESSAGE", e);
            // If can't connect to url, return the url without change
        }
    }
    return data;
}

---

From source file:org.squale.welcom.outils.WelcomConfigurator.java

/**
 * Initialise les proprits du fichier de configuration - lastDate - isGoodResources
 * //from  ww  w  .j  a  va 2 s .  c  o  m
 * @param pFileName fichier de configuration
 */
private void initializeFile(final String pFileName) {

    String realFileName = "";

    this.fileName = pFileName;

    InputStream is = null;

    if (!GenericValidator.isBlankOrNull(fileName)) {

        // Set up to load the property resource for this locale key, if we can
        realFileName = fileName.replace('.', '/') + ".properties";

        goodFileResources = true;
        final ClassLoader classLoader = Thread.currentThread().getContextClassLoader();

        // Recherche la date de derniere modification
        final URL url = classLoader.getResource(realFileName);
        URLConnection urlConn;
        try {
            urlConn = url.openConnection();
            urlConn.setUseCaches(false);
            urlConn.connect();
            urlConn.getLastModified();
            lastDateFile = new Date(urlConn.getLastModified());
        } catch (final Exception e) {
            goodFileResources = false;
        }

        // Regarde si le fichier n'est pas vide
        is = classLoader.getResourceAsStream(realFileName);
        goodFileResources = (is != null);
    }

}

---

From source file:net.sf.taverna.t2.security.credentialmanager.impl.HTTPAuthenticatorIT.java

@Test()
public void withAuthenticator() throws Exception {
    assertEquals("Unexpected calls to password provider", 0,
            HTTPAuthenticatorServiceUsernameAndPasswordProvider.getCalls());
    // Set the authenticator to our Credential Manager-backed one that also
    // counts calls to itself
    CountingAuthenticator authenticator = new CountingAuthenticator(credentialManager);
    assertEquals("Unexpected calls to authenticator", 0, authenticator.calls);
    Authenticator.setDefault(authenticator);
    //      FixedPasswordProvider.setUsernamePassword(new UsernamePassword(
    //            USERNAME, PASSWORD));

    URL url = new URL("http://localhost:" + PORT + "/test.html");
    httpAuthProvider.setServiceUsernameAndPassword(url.toURI(), new UsernamePassword(USERNAME, PASSWORD));
    URLConnection c = url.openConnection();

    c.connect();
    try {/* w ww  .  j a  v  a 2 s.c om*/
        c.getContent();
    } catch (Exception ex) {
    }
    System.out.println(c.getHeaderField(0));
    assertEquals("Did not invoke authenticator", 1, authenticator.calls);
    assertEquals("Did not invoke our password provider", 1,
            HTTPAuthenticatorServiceUsernameAndPasswordProvider.getCalls());
    assertEquals("HTTP/1.1 200 OK", c.getHeaderField(0));

    assertEquals("Unexpected prompt/realm", REALM, httpAuthProvider.getRequestMessage());
    assertEquals("Unexpected URI", url.toURI().toASCIIString() + "#" + REALM,
            HTTPAuthenticatorServiceUsernameAndPasswordProvider.getServiceURI().toASCIIString());

    // And test Java's cache:
    URLConnection c2 = url.openConnection();
    c2.connect();
    assertEquals("HTTP/1.1 200 OK", c2.getHeaderField(0));
    assertEquals("JVM invoked our authenticator again instead of caching", 1, authenticator.calls);
    assertEquals("Invoked our password provider again instead of caching", 1,
            HTTPAuthenticatorServiceUsernameAndPasswordProvider.getCalls());

}

---

From source file:net.sf.taverna.t2.security.credentialmanager.impl.HTTPAuthenticatorIT.java

@Test()
public void withAuthenticatorResetJava() throws Exception {
    assertTrue("Could not reset JVMs authCache, ignore on non-Sun JVM", credentialManager.resetAuthCache());

    assertEquals("Unexpected calls to password provider", 0,
            HTTPAuthenticatorServiceUsernameAndPasswordProvider.getCalls());
    CountingAuthenticator authenticator = new CountingAuthenticator(credentialManager);
    assertEquals("Unexpected calls to authenticator", 0, authenticator.calls);
    Authenticator.setDefault(authenticator);
    //      FixedPasswordProvider.setUsernamePassword(new UsernamePassword(
    //            USERNAME, PASSWORD));

    URL url = new URL("http://localhost:" + PORT + "/test.html");
    httpAuthProvider.setServiceUsernameAndPassword(url.toURI(), new UsernamePassword(USERNAME, PASSWORD));
    URLConnection c = url.openConnection();

    c.connect();
    try {/*w  w  w  .j a v a 2 s. co m*/
        c.getContent();
    } catch (Exception ex) {
    }

    assertEquals("HTTP/1.1 200 OK", c.getHeaderField(0));

    assertEquals("Did not invoke authenticator", 1, authenticator.calls);
    assertEquals("Did not invoke our password provider", 1,
            HTTPAuthenticatorServiceUsernameAndPasswordProvider.getCalls());

    assertEquals("Unexpected prompt/realm", REALM, httpAuthProvider.getRequestMessage());
    assertEquals("Unexpected URI", url.toURI().toASCIIString() + "#" + REALM,
            HTTPAuthenticatorServiceUsernameAndPasswordProvider.getServiceURI().toASCIIString());

    // And without Java's cache:
    assertTrue("Could not reset VMs authCache, ignore on non-Sun VM", credentialManager.resetAuthCache());

    URLConnection c2 = url.openConnection();
    c2.connect();
    assertEquals("HTTP/1.1 200 OK", c2.getHeaderField(0));
    assertEquals("Did not invoke our authenticator again", 2, authenticator.calls);
    assertEquals("Did not invoke our password provider again", 2,
            HTTPAuthenticatorServiceUsernameAndPasswordProvider.getCalls());

}

---

From source file:ddf.catalog.source.opensearch.SecureRemoteConnectionImpl.java

@Override
public BinaryContent getData(String urlStr) throws IOException {
    URL url = new URL(urlStr);
    URLConnection conn = url.openConnection();
    if (conn instanceof HttpsURLConnection) {
        try {/*  www.j a  v a  2  s . c o  m*/
            ((HttpsURLConnection) conn).setSSLSocketFactory(getSocketFactory());
        } catch (Exception e) {
            throw new IOException("Error in creating SSL socket.", e);
        }
    }
    conn.connect();
    MimeType mimeType = DEFAULT_MIMETYPE;
    try {
        mimeType = new MimeType(conn.getContentType());
    } catch (MimeTypeParseException e) {
        LOGGER.debug("Error creating mime type with input [" + conn.getContentType() + "], defaulting to "
                + DEFAULT_MIMETYPE.toString());
    }
    return new BinaryContentImpl(conn.getInputStream(), mimeType);
}

---

From source file:org.jahia.utils.maven.plugin.TestMojo.java

private void executeAllTests() {
    try {/*from w  w w  .  j  ava 2 s.com*/
        List<String> targets = new ArrayList<String>();
        String url1 = testURL + "/test" + (StringUtils.isNotEmpty(test) ? "/" + test : "");
        if (skipCoreTests) {
            url1 += "?skipCoreTests=true";
        }
        getLog().info("Get tests from : " + url1);
        URLConnection conn = null;

        if (startupWait) {
            getLog().info("Waiting for jahia startup");
            for (int i = startupTimeout; i > 0; i--) {
                try {
                    conn = new URL(url1).openConnection();
                    conn.connect();
                    break;
                } catch (IOException e) {
                    try {
                        Thread.sleep(1000);
                    } catch (InterruptedException e1) {
                        e1.printStackTrace();
                    }
                    System.out.print(".");
                }
            }
        } else {
            conn = new URL(url1).openConnection();
        }

        InputStream is = null;
        if (conn != null) {
            is = conn.getInputStream();
        }
        BufferedReader r = new BufferedReader(new InputStreamReader(is));
        String line;
        while ((line = r.readLine()) != null) {
            getLog().info("Adding test " + line);
            targets.add(line);
        }
        if (is != null) {
            is.close();
        }

        long timer = System.currentTimeMillis();

        getLog().info("Start executing all tests (" + targets.size() + ")...");
        for (String s : targets) {
            executeTest(s, false);
        }
        getLog().info("...done in " + (System.currentTimeMillis() - timer) / 1000 + " s");

    } catch (IOException e) {
        getLog().error(e);
    }
}

---

From source file:uk.co.tekkies.readings.activity.ReadingsActivity.java

private String backgroundDownloadNewsToast(String versionName) {
    String summary = null;/*from  ww w.j  a v  a  2s .  com*/
    URL url;
    try {
        //Append version, so we can easily prompt users to upgrade, if necessary.
        url = new URL(NEWS_TOAST_URL + "?v=" + versionName);
        URLConnection connection = url.openConnection();
        connection.connect();
        BufferedReader reader = new BufferedReader(new InputStreamReader(url.openStream()));
        String line = reader.readLine();
        //Sanity check message:  e.g. We wouldn't want to toast html from a hotspot paywall
        if (line != null) {
            if (line.equals("uk.co.tekkies.readings.news-toast")) {
                line = reader.readLine();
                summary = "";
                while (line != null) {
                    summary += line + "\n";
                    line = reader.readLine();
                }
            }
        }
        reader.close();
    } catch (UnknownHostException e) {
        //swallow it
    } catch (ConnectException e) {
        //swallow it
    } catch (SocketException e) {
        //swallow it
    } catch (FileNotFoundException e) {
        //swallow it
    } catch (SocketTimeoutException e) {
        //swallow it
    } catch (Exception e) {
        Analytics.reportCaughtException(this, e);
    }
    return summary;
}

---

From source file:net.sf.taverna.t2.activities.wsdl.WSDLActivity.java

private void parseWSDL() throws ParserConfigurationException, WSDLException, IOException, SAXException,
        UnknownOperationException {//  w  ww.j  a  v  a  2  s .c  om
    String wsdlLocation = configurationBean.get("operation").get("wsdl").textValue();
    URLConnection connection = null;
    try {
        URL wsdlURL = new URL(wsdlLocation);
        connection = wsdlURL.openConnection();
        connection.setConnectTimeout(RemoteHealthChecker.getTimeoutInSeconds() * 1000);
        connection.connect();
    } catch (MalformedURLException e) {
        throw new IOException("Malformed URL", e);
    } catch (SocketTimeoutException e) {
        throw new IOException("Timeout", e);
    } catch (IOException e) {
        throw e;
    } finally {
        if ((connection != null) && (connection.getInputStream() != null)) {
            connection.getInputStream().close();
        }
    }
    parser = new WSDLParser(wsdlLocation);
    isWsrfService = parser.isWsrfService();
}

---

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