Example usage for java.net HttpURLConnection connect

Introduction

In this page you can find the example usage for java.net HttpURLConnection 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:com.google.gdocsfs.GoogleDocs.java

public final int getContentLength(URL source) throws IOException {
    HttpURLConnection connection = null;
    try {/*from w  w w .j a v  a  2s. co m*/
        connection = getConnection(source, "HEAD");
        connection.connect();

        { // get content length
            int contentLength = -1;
            String contentLengthStr = connection.getHeaderField("Content-Length");
            if (contentLengthStr != null) {
                try {
                    contentLength = Integer.parseInt(contentLengthStr);
                } catch (NumberFormatException e) {
                    log.warn("Can't parse the content lenght.", e);
                }
            }
            return contentLength;
        }

    } finally {
        if (connection != null) {
            connection.disconnect();
        }
    }
}

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From source file:com.cloudbees.mtslaves.client.VirtualMachineRef.java

/**
 * Synchronously boot and wait until its fully booted.
 *
 * @return//  w w w .ja  va  2 s.  c o  m
 *      The latest virtual machine state reported by the server when we confirmed a boot.
 */
public VirtualMachine bootSync() throws IOException, InterruptedException {
    HttpURLConnection con = open("boot");
    con.setRequestMethod("POST");
    con.setReadTimeout(BOOT_SYNC_READ_TIMEOUT_MS);
    con.connect();
    drain(con);
    verifyResponseStatus(con);

    for (int i = 0; i < TIMEOUT; i++) {
        Thread.sleep(1000);
        VirtualMachine state = getState();

        if (state.state == null)
            throw new IllegalStateException("Virtual machine failed to boot: " + state.json);

        switch (state.state.getId()) {
        default:
            throw new IllegalStateException(state.state.getId().toString());
        case booting:
            continue; // wait some more
        case running:
            return state;
        case error:
            throw new IllegalStateException("Virtual machine failed to boot: " + state.json);
        }
    }

    throw new IOException("Time out: VM is taking forever to boot" + url);
}

---

From source file:com.screenslicer.common.CommonUtil.java

public static String post(String uri, String recipient, String postData) {
    HttpURLConnection conn = null;
    try {/*from   w w  w  .  j  a  v a 2  s  .c  o m*/
        postData = Crypto.encode(postData, recipient);
        conn = (HttpURLConnection) new URL(uri).openConnection();
        conn.setDoOutput(true);
        conn.setUseCaches(false);
        conn.setRequestMethod("POST");
        conn.setConnectTimeout(0);
        conn.setRequestProperty("Content-Type", "application/json");
        byte[] bytes = postData.getBytes("utf-8");
        conn.setRequestProperty("Content-Length", String.valueOf(bytes.length));
        OutputStream os = conn.getOutputStream();
        os.write(bytes);
        conn.connect();
        if (conn.getResponseCode() == 205) {
            return NOT_BUSY;
        }
        if (conn.getResponseCode() == 423) {
            return BUSY;
        }
        return Crypto.decode(IOUtils.toString(conn.getInputStream(), "utf-8"), recipient);
    } catch (Exception e) {
        Log.exception(e);
    }
    return "";
}

---

From source file:com.google.gdocsfs.GoogleDocs.java

public final void download(URL source, File target) throws IOException {

    InputStream is = null;/*from  ww  w . j  a  v a2  s  . c o m*/
    FileOutputStream fos = null;
    HttpURLConnection connection = null;

    try {
        connection = getConnection(source, "GET");
        connection.connect();
        is = connection.getInputStream();
        fos = new FileOutputStream(target);
        int readCount;
        byte[] data = new byte[BLOCK_SIZE];
        while ((readCount = is.read(data)) > 0) {
            fos.write(data, 0, readCount);
        }

    } finally {
        if (fos != null) {
            fos.flush();
            fos.close();
        }
        if (is != null) {
            is.close();
        }
        if (connection != null) {
            connection.disconnect();
        }
    }
}

---

From source file:net.ae97.pokebot.extensions.scrolls.PlayerCommand.java

@Override
public void runEvent(CommandEvent event) {
    String name = event.getArgs().length > 0 ? event.getArgs()[0] : event.getUser().getNick();
    try {/*from w  w w  .  j  a  va 2 s .c  om*/
        URL playerURL = new URL(url.replace("{name}", name));
        List<String> lines = new LinkedList<>();
        HttpURLConnection conn = (HttpURLConnection) playerURL.openConnection();
        conn.setRequestProperty("User-Agent", "PokeBot - " + PokeBot.VERSION);
        conn.connect();
        try (BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()))) {
            String line;
            while ((line = reader.readLine()) != null) {
                lines.add(line);
            }
        }
        JsonParser parser = new JsonParser();
        JsonElement element = parser.parse(StringUtils.join(lines, "\n"));
        JsonObject obj = element.getAsJsonObject();

        String result = obj.get("msg").getAsString();
        if (!result.equalsIgnoreCase("success")) {
            event.respond("No data could be retrieved for " + name);
            return;
        }

        JsonObject dataObject = obj.get("data").getAsJsonObject();

        StringBuilder builder = new StringBuilder();

        if (event.getUser().getNick().equalsIgnoreCase(dataObject.get("name").getAsString())) {
            builder.append("Your");
        } else {
            builder.append(dataObject.get("name").getAsString()).append("'s");
        }
        builder.append(" stats - ");
        builder.append("Rating: ").append(dataObject.get("rating").getAsInt()).append(" - ");
        builder.append("Rank: ").append(dataObject.get("rank").getAsInt()).append(" - ");
        builder.append("Badge: ").append(badges.getBadge(dataObject.get("badgerank").getAsString()))
                .append(" - ");
        builder.append("Played: ").append(dataObject.get("played").getAsInt()).append(" - ");
        builder.append("Won: ").append(dataObject.get("won").getAsInt());
        builder.append(" (");
        builder.append(
                (int) ((dataObject.get("won").getAsDouble() / dataObject.get("played").getAsDouble()) * 100));
        builder.append("%) - ");
        builder.append("Judgement wins: ").append(dataObject.get("limitedwon").getAsInt()).append(" - ");
        builder.append("Ranked wins: ").append(dataObject.get("rankedwon").getAsInt()).append(" - ");
        builder.append("Last game played: ").append(parseTime(dataObject.get("lastgame").getAsInt()));

        event.respond(builder.toString());
    } catch (IOException | JsonSyntaxException ex) {
        extension.getLogger().log(Level.SEVERE, "Error on getting player stats for Scrolls for " + name, ex);
        event.respond("Error on getting player stats: " + ex.getLocalizedMessage());
    }
}

---

From source file:net.sf.taverna.t2.reference.impl.external.http.HttpReference.java

@Override
public Long getApproximateSizeInBytes() {
    long now = currentTimeMillis();
    if (cachedLength != null && cacheTime != null && cacheTime.getTime() + CACHE_TIMEOUT > now)
        return cachedLength;
    try {//from ww  w .  j  a  va2  s  .c  o m
        HttpURLConnection c = (HttpURLConnection) httpUrl.openConnection();
        c.setRequestMethod("HEAD");
        c.connect();
        String lenString = c.getHeaderField("Content-Length");
        if (lenString != null && !lenString.isEmpty()) {
            cachedLength = new Long(lenString);
            cacheTime = new Date(now);
            return cachedLength;
        }
        // there is no Content-Length field so we cannot know the size
    } catch (Exception e) {
        // something went wrong, but we don't care what
    }
    cachedLength = null;
    cacheTime = null;
    return new Long(-1);
}

---

From source file:com.ngdata.hbaseindexer.util.solr.SolrTestingUtility.java

/**
 * Creates a new core, associated with a collection, in Solr.
 *//*from   w  w w. j a  v  a 2  s .  c o m*/
public void createCore(String coreName, String collectionName, String configName, int numShards, String dataDir)
        throws IOException {
    String url = "http://localhost:" + solrPort + "/solr/admin/cores?action=CREATE&name=" + coreName
            + "&collection=" + collectionName + "&configName=" + configName + "&numShards=" + numShards;

    if (dataDir != null) {
        url += "&dataDir=" + dataDir;
    }

    URL coreActionURL = new URL(url);
    HttpURLConnection conn = (HttpURLConnection) coreActionURL.openConnection();
    conn.connect();
    int response = conn.getResponseCode();
    conn.disconnect();
    if (response != 200) {
        throw new RuntimeException("Request to " + url + ": expected status 200 but got: " + response + ": "
                + conn.getResponseMessage());
    }
}

---

From source file:org.sample.nonblocking.TestClient.java

/**
 * Processes requests for both HTTP// w ww  . j  a v  a2s. co  m
 * <code>GET</code> and
 * <code>POST</code> methods.
 *
 * @param request servlet request
 * @param response servlet response
 * @throws ServletException if a servlet-specific error occurs
 * @throws IOException if an I/O error occurs
 */
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    response.setContentType("text/html;charset=UTF-8");
    try (PrintWriter out = response.getWriter()) {
        out.println("<html>");
        out.println("<head>");
        out.println("<title>Servlet TestClient</title>");
        out.println("</head>");
        out.println("<body>");
        out.println("<h1>Servlet TestClient at " + request.getContextPath() + "</h1>");

        String path = "http://" + request.getServerName() + ":" + request.getServerPort()
                + request.getContextPath() + "/ReadTestServlet";
        out.println("Invoking the endpoint: " + path + "<br>");
        out.flush();
        URL url = new URL(path);
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setChunkedStreamingMode(2);
        conn.setDoOutput(true);
        conn.connect();
        try (BufferedWriter output = new BufferedWriter(new OutputStreamWriter(conn.getOutputStream()))) {
            out.println("Sending data ..." + "<br>");
            out.flush();
            output.write("Hello");
            output.flush();
            out.println("Sleeping ..." + "<br>");
            out.flush();
            Thread.sleep(5000);
            out.println("Sending more data ..." + "<br>");
            out.flush();
            output.write("World");
            output.flush();
            output.close();
        }
        out.println("<br><br>Check GlassFish server.log");
        out.println("</body>");
        out.println("</html>");
    } catch (InterruptedException | IOException ex) {
        Logger.getLogger(ReadTestServlet.class.getName()).log(Level.SEVERE, null, ex);
    }
}

---

From source file:Servlet.Cancel.java

/**
 * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
 * methods./*w  ww . ja v a  2 s.co  m*/
 *
 * @param request servlet request
 * @param response servlet response
 * @throws ServletException if a servlet-specific error occurs
 * @throws IOException if an I/O error occurs
 */
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {

    try {

        String eventUrl = request.getParameter("eventUrl");
        System.out.print(eventUrl);

        String valid = "valid";

        OAuthConsumer consumer = new DefaultOAuthConsumer("test6-40942", "oQ4q4oBiv9y4jPr7");
        URL url = new URL(eventUrl);
        HttpURLConnection requestUrl = (HttpURLConnection) url.openConnection();
        consumer.sign(requestUrl);
        requestUrl.connect();

        GetResponse gr = new GetResponse();
        gr.validateUrl(valid);

        String result = null;
        StringBuilder sb = new StringBuilder();
        requestUrl.setRequestMethod("GET");
        BufferedReader br = new BufferedReader(new InputStreamReader(requestUrl.getInputStream()));
        String inputLine = "";
        while ((inputLine = br.readLine()) != null) {
            sb.append(inputLine);
        }

        result = sb.toString();

        DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
        InputSource src = new InputSource();
        src.setCharacterStream(new StringReader(result));

        //parsing elements by name tags from event url
        Document doc = builder.parse(src);
        String creatorName = doc.getElementsByTagName("fullName").item(0).getTextContent();
        String companyName = doc.getElementsByTagName("name").item(0).getTextContent();
        String edition = doc.getElementsByTagName("editionCode").item(0).getTextContent();
        String returnUrl = doc.getElementsByTagName("returnUrl").item(0).getTextContent();

        System.out.print(creatorName);
        System.out.print(companyName);
        System.out.print(edition);
        System.out.print(returnUrl);

        DefaultHttpClient httpClient = new DefaultHttpClient();
        HttpPost xmlResponse = new HttpPost(returnUrl);
        StringEntity input = new StringEntity(
                "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?><result><success>true</success><message>Account change successful</message>");
        input.setContentType("text/xml");
        xmlResponse.setEntity(input);
        httpClient.execute(xmlResponse);

    } catch (OAuthMessageSignerException ex) {
        Logger.getLogger(Cancel.class.getName()).log(Level.SEVERE, null, ex);
    } catch (OAuthExpectationFailedException ex) {
        Logger.getLogger(Cancel.class.getName()).log(Level.SEVERE, null, ex);
    } catch (OAuthCommunicationException ex) {
        Logger.getLogger(Cancel.class.getName()).log(Level.SEVERE, null, ex);
    } catch (SAXException ex) {
        Logger.getLogger(Cancel.class.getName()).log(Level.SEVERE, null, ex);
    } catch (ParserConfigurationException ex) {
        Logger.getLogger(Cancel.class.getName()).log(Level.SEVERE, null, ex);
    }
}

---

From source file:net.ae97.pokebot.extensions.scrolls.ExperimentalPriceCommand.java

@Override
public void runEvent(CommandEvent event) {
    if (event.getArgs().length == 0 || (event.getArgs()[0].equals("-d") && event.getArgs().length < 3)) {
        event.respond("Usage: .price <-d days> [name]");
        return;//www  .  jav  a  2 s  . c om
    }
    int days = 2;
    String[] name = event.getArgs();
    if (event.getArgs()[0].equals("-d")) {
        name = new String[event.getArgs().length - 2];
        for (int i = 2; i < event.getArgs().length; i++) {
            name[i - 2] = event.getArgs()[i];
        }
        try {
            days = Integer.parseInt(event.getArgs()[1]);
        } catch (NumberFormatException e) {
            event.respond("Usage: .price <-d days> [name]");
            return;
        }
        if (days > 10 || days < 0) {
            event.respond("The days must be between 1 and 10 (inclusive)");
            return;
        }
    }
    try {
        URL playerURL = new URL(
                url.replace("{days}", Integer.toString(days)).replace("{name}", StringUtils.join(name, "%20")));
        List<String> lines = new LinkedList<>();
        HttpURLConnection conn = (HttpURLConnection) playerURL.openConnection();
        conn.setRequestProperty("User-Agent", "PokeBot - " + PokeBot.VERSION);
        conn.connect();
        try (BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()))) {
            String line;
            while ((line = reader.readLine()) != null) {
                lines.add(line);
            }
        }

        JsonParser parser = new JsonParser();
        JsonElement element = parser.parse(StringUtils.join(lines, "\n"));
        JsonObject obj = element.getAsJsonObject();

        String result = obj.get("msg").getAsString();
        if (!result.equalsIgnoreCase("success")) {
            event.respond("Scroll not found");
            return;
        }
        JsonObject dataObject = obj.get("data").getAsJsonArray().get(0).getAsJsonObject();

        StringBuilder builder = new StringBuilder();

        builder.append("Buy: ").append(dataObject.get("buy").getAsJsonObject().get("price").getAsInt())
                .append(" Gold - ");
        builder.append("Bought: ").append(dataObject.get("buy").getAsJsonObject().get("pop").getAsInt())
                .append(" - ");
        builder.append("Sell: ").append(dataObject.get("sell").getAsJsonObject().get("price").getAsInt())
                .append(" Gold - ");
        builder.append("Sold: ").append(dataObject.get("sell").getAsJsonObject().get("pop").getAsInt());
        String[] message = builder.toString().split("\n");
        for (String msg : message) {
            event.respond("" + msg);
        }

    } catch (IOException | JsonSyntaxException | IllegalStateException ex) {
        PokeBot.getLogger().log(Level.SEVERE,
                "Error on getting scroll for Scrolls for '" + StringUtils.join(event.getArgs(), " ") + "'", ex);
        event.respond("Error on getting scroll: " + ex.getLocalizedMessage());

    }
}

---

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