Example usage for java.net HttpURLConnection getResponseCode

Introduction

In this page you can find the example usage for java.net HttpURLConnection getResponseCode.

Prototype

public int getResponseCode() throws IOException 

Source Link

Document

Gets the status code from an HTTP response message.

Usage

From source file:brainleg.app.util.AppWeb.java

public static String post(String url, NameValuePair[] postParameters)
        throws RequestRejectedException, IOException {
    HttpConfigurable.getInstance().prepareURL(getUrl("api/proxyTest"));

    HttpURLConnection connection = doPost(url, join(Arrays.asList(postParameters)));
    int responseCode = connection.getResponseCode();

    String responseText;/*from  w ww  . j a v a 2 s .  c o m*/

    InputStream is = new BufferedInputStream(connection.getInputStream());
    try {
        responseText = readFrom(is);
    } finally {
        is.close();
    }

    if (responseCode != HttpURLConnection.HTTP_OK) {
        // if this is 400 this is an application error (something is rejected by the app)
        if (responseCode == 400 && responseText != null) {
            //normally we return error messages like this: REQUIRED_PARAM_MISSING:Required parameters missing
            List<String> tokens = Lists
                    .newArrayList(Splitter.on(":").omitEmptyStrings().trimResults().split(responseText));
            if (tokens.isEmpty()) {
                throw new RequestRejectedException();
            } else if (tokens.size() == 1) {
                throw new RequestRejectedException(tokens.get(0), null);
            } else {
                throw new RequestRejectedException(tokens.get(0), tokens.get(1));
            }
        } else {
            throw new IOException("response code from server: " + responseCode);
        }
    } else {
        return responseText;
    }
}

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From source file:Main.java

public static URI unredirect(URI uri) throws IOException {
    if (!REDIRECTOR_DOMAINS.contains(uri.getHost())) {
        return uri;
    }//w  ww . j av  a 2 s .co m
    URL url = uri.toURL();

    HttpURLConnection connection = (HttpURLConnection) url.openConnection();
    connection.setInstanceFollowRedirects(false);
    connection.setDoInput(false);
    connection.setRequestMethod("HEAD");
    connection.setRequestProperty("User-Agent", "ZXing (Android)");
    try {
        connection.connect();
        switch (connection.getResponseCode()) {
        case HttpURLConnection.HTTP_MULT_CHOICE:
        case HttpURLConnection.HTTP_MOVED_PERM:
        case HttpURLConnection.HTTP_MOVED_TEMP:
        case HttpURLConnection.HTTP_SEE_OTHER:
        case 307: // No constant for 307 Temporary Redirect ?
            String location = connection.getHeaderField("Location");
            if (location != null) {
                try {
                    return new URI(location);
                } catch (URISyntaxException e) {
                    // nevermind
                }
            }
        }
        return uri;
    } finally {
        connection.disconnect();
    }
}

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From source file:Main.java

public static boolean hasActiveInternetConnection(Context context) {
    if (isNetworkAvailable(context)) {
        try {/*w w w.j av  a 2  s  .c  o  m*/
            HttpURLConnection connection = (HttpURLConnection) (new URL(
                    "http://clients3.google.com/generate_204")).openConnection();
            connection.setRequestProperty("User-Agent", "Test");
            connection.setRequestProperty("Connection", "close");
            connection.setReadTimeout(1500);
            connection.connect();
            return (connection.getResponseCode() == 204 && connection.getContentLength() == 0);
        } catch (IOException e) {
            Log.e("ERROR", "Error checking internet connection");
        }
    } else
        Log.e("ERROR", "No network available");
    return false;
}

---

From source file:edu.jhu.cvrg.timeseriesstore.opentsdb.TimeSeriesUtility.java

protected static String readHttpResponse(HttpURLConnection httpConnection)
        throws OpenTSDBException, IOException {
    String result = "";
    int responseCode = httpConnection.getResponseCode();

    if (responseCode == 200) {
        result = readHTTPConnection(httpConnection);
    } else if (responseCode == 204) {
        result = String.valueOf(responseCode);
    } else {//  ww  w.  java2  s.  com
        throw new OpenTSDBException(responseCode, httpConnection.getURL().toString(), "");
    }
    httpConnection.disconnect();

    return result;
}

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From source file:io.cloudex.cloud.impl.google.compute.GoogleMetaData.java

/**
 * Call the metadata server, this returns details for the current instance not for
 * different instances. In order to retrieve the meta data of different instances
 * we just use the compute api, see getInstance
 * @param path/*from w w  w .ja  va 2 s  .co m*/
 * @return
 * @throws IOException
 */
public static String getMetaData(String path) throws IOException {
    log.debug("Retrieving metadata from server, path: " + path);
    URL metadata = new URL(METADATA_SERVER_URL + path);
    HttpURLConnection con = (HttpURLConnection) metadata.openConnection();

    // optional default is GET
    //con.setRequestMethod("GET");

    //add request header
    con.setRequestProperty("Metadata-Flavor", "Google");

    int responseCode = con.getResponseCode();

    StringBuilder response = new StringBuilder();

    if (responseCode == 200) {
        try (BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()))) {
            String inputLine;
            while ((inputLine = in.readLine()) != null) {
                response.append(inputLine);
            }
        }
    } else {
        String msg = "Metadata server responded with status code: " + responseCode;
        log.error(msg);
        throw new IOException(msg);
    }
    log.debug("Successfully retrieved metadata from server");

    return response.toString();
}

---

From source file:com.meetingninja.csse.database.GroupDatabaseAdapter.java

public static Group getGroup(String groupID) throws IOException {
    // Server URL setup
    String _url = getBaseUri().appendPath(groupID).build().toString();

    // Establish connection
    URL url = new URL(_url);
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();

    // add request header
    conn.setRequestMethod("GET");
    addRequestHeader(conn, false);/* w  ww  .  jav a  2  s.co m*/

    // Get server response
    int responseCode = conn.getResponseCode();
    String response = getServerResponse(conn);
    JsonNode groupNode = MAPPER.readTree(response);

    return parseGroup(groupNode, new Group());
}

---

From source file:com.meetingninja.csse.database.NotesDatabaseAdapter.java

public static Boolean deleteNote(String noteID) throws IOException {
    String _url = getBaseUri().appendPath(noteID).build().toString();
    URL url = new URL(_url);
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();

    // add request header
    conn.setRequestMethod(IRequest.DELETE);
    addRequestHeader(conn, false);//ww w.ja  v a  2  s  .c o  m
    int responseCode = conn.getResponseCode();
    String response = getServerResponse(conn);

    boolean result = false;
    JsonNode tree = MAPPER.readTree(response);
    if (!response.isEmpty()) {
        if (!tree.has(Keys.DELETED)) {
            result = true;
        } else {
            logError("note.del.err", tree);
        }
    }

    conn.disconnect();
    return result;
}

---

From source file:jfix.util.Urls.java

/**
 * Returns true if given url can be connected via HTTP within given timeout
 * (specified in seconds). Otherwise the url might be broken.
 *//*from  w ww .j  av  a 2 s  .  c o  m*/
public static boolean isConnectable(String url, int timeout) {
    try {
        URLConnection connection = new URL(url).openConnection();
        if (connection instanceof HttpURLConnection) {
            HttpURLConnection httpConnection = (HttpURLConnection) connection;
            httpConnection.setConnectTimeout(timeout * 1000);
            httpConnection.setReadTimeout(timeout * 1000);
            httpConnection.connect();
            int response = httpConnection.getResponseCode();
            httpConnection.disconnect();
            return response == HttpURLConnection.HTTP_OK;
        }
    } catch (Exception e) {
        return false;
    }
    return false;
}

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From source file:jfix.util.Urls.java

/**
 * Returns the status code for connecting given url with given timeout.
 * Returns 0 if an IOException occurs./*ww  w  .  java 2 s . c  o  m*/
 */
public static int getStatus(String url, int timeout) {
    try {
        URLConnection connection = new URL(url).openConnection();
        if (connection instanceof HttpURLConnection) {
            HttpURLConnection httpConnection = (HttpURLConnection) connection;
            httpConnection.setConnectTimeout(timeout * 1000);
            httpConnection.setReadTimeout(timeout * 1000);
            httpConnection.connect();
            int response = httpConnection.getResponseCode();
            httpConnection.disconnect();
            return response;
        }
    } catch (IOException e) {
        // pass
    }
    return 0;
}

---

From source file:com.alexoree.jenkins.Main.java

private static String download(String localName, String remoteUrl) throws Exception {
    URL obj = new URL(remoteUrl);
    HttpURLConnection conn = (HttpURLConnection) obj.openConnection();
    conn.setReadTimeout(5000);//from   w w w. j  a v a  2s . c  o  m

    System.out.println("Request URL ... " + remoteUrl);

    boolean redirect = false;

    // normally, 3xx is redirect
    int status = conn.getResponseCode();
    if (status != HttpURLConnection.HTTP_OK) {
        if (status == HttpURLConnection.HTTP_MOVED_TEMP || status == HttpURLConnection.HTTP_MOVED_PERM
                || status == HttpURLConnection.HTTP_SEE_OTHER)
            redirect = true;
    }

    if (redirect) {

        // get redirect url from "location" header field
        String newUrl = conn.getHeaderField("Location");

        // get the cookie if need, for login
        String cookies = conn.getHeaderField("Set-Cookie");

        // open the new connnection again
        conn = (HttpURLConnection) new URL(newUrl).openConnection();

        String version = newUrl.substring(newUrl.lastIndexOf("/", newUrl.lastIndexOf("/") - 1) + 1,
                newUrl.lastIndexOf("/"));
        String pluginname = localName.substring(localName.lastIndexOf("/") + 1);
        String ext = "";
        if (pluginname.endsWith(".war"))
            ext = ".war";
        else
            ext = ".hpi";

        pluginname = pluginname.replace(ext, "");
        localName = localName.replace(pluginname + ext,
                "/download/plugins/" + pluginname + "/" + version + "/");
        new File(localName).mkdirs();
        localName += pluginname + ext;
        System.out.println("Redirect to URL : " + newUrl);

    }
    if (new File(localName).exists()) {
        System.out.println(localName + " exists, skipping");
        return localName;
    }

    byte[] buffer = new byte[2048];

    FileOutputStream baos = new FileOutputStream(localName);
    InputStream inputStream = conn.getInputStream();
    int totalBytes = 0;
    int read = inputStream.read(buffer);
    while (read > 0) {
        totalBytes += read;
        baos.write(buffer, 0, read);
        read = inputStream.read(buffer);
    }
    System.out.println("Retrieved " + totalBytes + "bytes");

    return localName;

}

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