Example usage for org.apache.commons.httpclient Header Header

List of usage examples for org.apache.commons.httpclient Header Header

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Introduction

In this page you can find the example usage for org.apache.commons.httpclient Header Header.

Prototype

public Header(String paramString1, String paramString2)

Source Link

Usage

From source file:spotlightclient.DBpediaspotlightClient.java

public List<DBpediaResource> extract(Text text) throws AnnotationException {

    LOG.info("Querying API.");
    String spotlightResponse;/*from w  w  w.  jav a2 s.  c  om*/
    try {
        GetMethod getMethod = new GetMethod(API_URL + "rest/annotate/?" + "confidence=" + confidence
                + "&support=" + SUPPORT + "&text=" + URLEncoder.encode(text.text(), "utf-8"));
        getMethod.addRequestHeader(new Header("Accept", "application/json"));

        spotlightResponse = request(getMethod);
    } catch (UnsupportedEncodingException e) {
        throw new AnnotationException("Could not encode text.", e);
    }

    assert spotlightResponse != null;

    JSONObject resultJSON = null;
    JSONArray entities = null;

    try {
        resultJSON = new JSONObject(spotlightResponse);
        entities = resultJSON.getJSONArray("Resources");
    } catch (JSONException e) {
        throw new AnnotationException("Received invalid response from DBpedia Spotlight API.");
    }

    LinkedList<DBpediaResource> resources = new LinkedList<DBpediaResource>();
    for (int i = 0; i < entities.length(); i++) {
        try {
            JSONObject entity = entities.getJSONObject(i);
            //System.out.println(entity.getString("@URI"));
            resources.add(new DBpediaResource(entity.getString("@URI"),
                    Integer.parseInt(entity.getString("@support"))));

        } catch (JSONException e) {
            LOG.error("JSON exception " + e);
        }

    }
    return resources;
}

From source file:textToURI.DBpediaSpotlightClient.java

@Override
public List<DBpediaResource> extract(Text text) throws AnnotationException {

    LOG.info("Querying API.");
    String spotlightResponse;//from  w  w  w  .j a v a  2s. co m
    try {
        GetMethod getMethod = new GetMethod(API_URL + "rest/annotate/?" + "confidence=" + confidence
                + "&support=" + support + "&text=" + URLEncoder.encode(text.text(), "utf-8"));
        getMethod.addRequestHeader(new Header("Accept", "application/json"));

        spotlightResponse = request(getMethod);
    } catch (UnsupportedEncodingException e) {
        throw new AnnotationException("Could not encode text.", e);
    }

    assert spotlightResponse != null;

    JSONObject resultJSON = null;
    JSONArray entities = null;

    try {
        resultJSON = new JSONObject(spotlightResponse);
        entities = resultJSON.getJSONArray("Resources");
    } catch (JSONException e) {
        throw new AnnotationException("Received invalid response from DBpedia Spotlight API.");
    }

    LinkedList<DBpediaResource> resources = new LinkedList<DBpediaResource>();
    for (int i = 0; i < entities.length(); i++) {
        try {
            JSONObject entity = entities.getJSONObject(i);
            resources.add(new DBpediaResource(entity.getString("@URI"),
                    Integer.parseInt(entity.getString("@support"))));

        } catch (JSONException e) {
            LOG.error("JSON exception " + e);
        }

    }

    return resources;
}

From source file:weka.gui.explorer.ClassifierPanelRemoteLauncher.java

/**
 * Send a task to the server/*from   w  w w. j  a v a2  s  . c  o  m*/
 * 
 * @param task the task to send
 * @return the task ID returned by the server
 */
protected String sendTaskToServer(NamedTask task) {

    InputStream is = null;
    PostMethod post = null;
    String taskID = null;

    try {
        byte[] serializedTask = WekaServer.serializeTask(task);

        String service = ExecuteTaskServlet.CONTEXT_PATH + "/?client=Y";
        String url = constructURL(service);
        post = new PostMethod(url);
        RequestEntity entity = new ByteArrayRequestEntity(serializedTask);
        post.setRequestEntity(entity);

        post.setDoAuthentication(true);
        post.addRequestHeader(new Header("Content-Type", "application/octet-stream"));

        // Get HTTP client
        HttpClient client = WekaServer.ConnectionManager.getSingleton().createHttpClient();
        WekaServer.ConnectionManager.addCredentials(client, m_username, m_password);

        int result = client.executeMethod(post);
        if (result == 401) {
            logMessage("Unable to send fold task to server - authentication " + "required");
        } else {
            is = post.getResponseBodyAsStream();
            ObjectInputStream ois = new ObjectInputStream(is);
            // System.out.println("Number of bytes in response " + ois.available());
            Object response = ois.readObject();
            if (response.toString().startsWith(WekaServlet.RESPONSE_ERROR)) {
                logMessage("A problem occurred at the sever : \n" + "\t" + response.toString());
            } else {
                taskID = response.toString();
            }
        }
    } catch (Exception ex) {
        logMessage("An error occurred while sending fold task to server: " + ex.getMessage());
        ex.printStackTrace();
    } finally {
        if (is != null) {
            try {
                is.close();
            } catch (Exception e) {
            }
        }

        if (post != null) {
            // Release current connection to the connection pool
            post.releaseConnection();
        }
    }

    return taskID;
}

From source file:weka.gui.explorer.ClassifierPanelRemoteLauncher.java

/**
 * Purge the supplied tasks from the server
 * //from  w  ww  . j av a  2 s  .c om
 * @param taskIDs a list of task IDs of tasks to purge
 */
protected void purgeTasksFromServer(List<String> taskIDs) {
    InputStream is = null;
    PostMethod post = null;
    StringBuffer tasks = new StringBuffer();
    for (String id : taskIDs) {
        tasks.append(id + ",");
    }
    String taskList = tasks.substring(0, tasks.lastIndexOf(","));

    try {
        String service = PurgeTaskServlet.CONTEXT_PATH + "/?name=" + taskList + "&client=Y";
        post = new PostMethod(constructURL(service));
        post.setDoAuthentication(true);
        post.addRequestHeader(new Header("Content-Type", "text/plain"));

        // Get HTTP client
        HttpClient client = WekaServer.ConnectionManager.getSingleton().createHttpClient();
        WekaServer.ConnectionManager.addCredentials(client, m_username, m_password);

        int result = client.executeMethod(post);
        if (result == 401) {
            logMessage("Unable to purge tasks from server - authentication " + "required");
        } else {
            is = post.getResponseBodyAsStream();
            ObjectInputStream ois = new ObjectInputStream(new BufferedInputStream(is));
            Object response = ois.readObject();
            if (response.toString().startsWith(WekaServlet.RESPONSE_ERROR)) {

                logMessage("Server returned an error: " + "while trying to purge completed tasks: '" + taskList
                        + "'. (" + response.toString() + ")." + " Check logs on server.");
            }
        }
    } catch (Exception ex) {
        logMessage(
                "An error occurred while trying to purge completed tasks from " + "server: " + ex.getMessage());
        ex.printStackTrace();
    } finally {
        if (is != null) {
            try {
                is.close();
            } catch (Exception e) {
            }
        }

        if (post != null) {
            // Release current connection to the connection pool
            post.releaseConnection();
        }
    }
}

From source file:weka.gui.explorer.ClassifierPanelRemoteLauncher.java

/**
 * Get a result from the server/*from  w  w w .j  a v  a 2 s.  c  om*/
 * 
 * @param taskID the ID of the task to retrieve the result for
 * @return the TaskStatusInfo object encapsulating the result
 */
protected TaskStatusInfo getResultFromServer(String taskID) {
    InputStream is = null;
    PostMethod post = null;
    TaskStatusInfo resultInfo = null;

    try {
        String service = GetTaskResultServlet.CONTEXT_PATH + "/?name=" + taskID + "&client=Y";
        post = new PostMethod(constructURL(service));
        post.setDoAuthentication(true);
        post.addRequestHeader(new Header("Content-Type", "text/plain"));

        // Get HTTP client
        HttpClient client = WekaServer.ConnectionManager.getSingleton().createHttpClient();
        WekaServer.ConnectionManager.addCredentials(client, m_username, m_password);

        int result = client.executeMethod(post);
        if (result == 401) {
            logMessage("Unable to retrieve task from server - authentication " + "required");
        } else {
            is = post.getResponseBodyAsStream();
            ObjectInputStream ois = new ObjectInputStream(new BufferedInputStream(new GZIPInputStream(is)));
            Object response = ois.readObject();
            if (response.toString().startsWith(WekaServlet.RESPONSE_ERROR)) {

                logMessage("Server returned an error: " + "while trying to retrieve task result for task: '"
                        + taskID + "'. (" + response.toString() + ")." + " Check logs on server.");
            } else {
                resultInfo = ((TaskStatusInfo) response);
            }
        }
    } catch (Exception ex) {
        logMessage(
                "An error occurred while trying to retrieve task result from " + "server: " + ex.getMessage());
        ex.printStackTrace();
    } finally {
        if (is != null) {
            try {
                is.close();
            } catch (Exception e) {
            }
        }

        if (post != null) {
            // Release current connection to the connection pool
            post.releaseConnection();
        }
    }

    return resultInfo;
}

From source file:weka.server.GetTaskResultServlet.java

protected static TaskStatusInfo getResultRemote(WekaServer server, String slave, String remoteTaskID,
        String origTaskID) {/*from   w ww  . java2s  .  c  om*/

    InputStream is = null;
    PostMethod post = null;
    TaskStatusInfo resultInfo = null;

    try {
        String url = "http://" + slave;
        url = url.replace(" ", "%20");
        url += CONTEXT_PATH;
        url += "/?name=" + URLEncoder.encode(remoteTaskID, "UTF-8") + "&client=Y";
        post = new PostMethod(url);
        post.setDoAuthentication(true);
        post.addRequestHeader(new Header("Content-Type", "text/plain"));

        // Get HTTP client
        HttpClient client = WekaServer.ConnectionManager.getSingleton().createHttpClient();
        WekaServer.ConnectionManager.addCredentials(client, server.getUsername(), server.getPassword());

        // Execute request
        int result = client.executeMethod(post);
        // System.out.println("[WekaServer] Response from master server : " +
        // result);
        if (result == 401) {
            System.err.println("[WekaServer] Unable to get remote result of task'" + origTaskID
                    + "' - authentication required.\n");
        } else {

            // the response
            is = post.getResponseBodyAsStream();
            ObjectInputStream ois = new ObjectInputStream(new BufferedInputStream(new GZIPInputStream(is)));
            Object response = ois.readObject();
            if (response.toString().startsWith(WekaServlet.RESPONSE_ERROR)) {
                System.err.println("[WekaServer] A problem occurred while "
                        + "trying to retrieve remote result of task : '" + origTaskID + "'");

            } else {
                if (response instanceof TaskStatusInfo) {
                    resultInfo = ((TaskStatusInfo) response);
                } else {
                    System.err.println("[WekaServer] A problem occurred while "
                            + "trying to retrieve remote result of task : '" + origTaskID + "'");
                }
            }
        }
    } catch (Exception ex) {
        System.err.println("[WekaServer] A problem occurred while "
                + "trying to retrieve remote result of task : '" + origTaskID + "' (" + ex.getMessage() + ")");
        System.err.println("Remote task id: " + remoteTaskID);
    } finally {
        if (is != null) {
            try {
                is.close();
                is = null;
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

        if (post != null) {
            post.releaseConnection();
            post = null;
        }
    }

    return resultInfo;
}

From source file:weka.server.GetTaskStatusServlet.java

protected static TaskStatusInfo getStatusRemote(WekaServer server, String slave, String remoteTaskID,
        String origTaskID) {//from  w  w  w  . j  av  a 2  s .c o m

    InputStream is = null;
    PostMethod post = null;
    TaskStatusInfo resultInfo = null;

    try {
        String url = "http://" + slave;
        url = url.replace(" ", "%20");
        url += CONTEXT_PATH;
        url += "/?name=" + URLEncoder.encode(remoteTaskID, "UTF-8") + "&client=Y";
        post = new PostMethod(url);
        post.setDoAuthentication(true);
        post.addRequestHeader(new Header("Content-Type", "text/plain"));

        // Get HTTP client
        HttpClient client = WekaServer.ConnectionManager.getSingleton().createHttpClient();
        WekaServer.ConnectionManager.addCredentials(client, server.getUsername(), server.getPassword());

        // Execute request
        int result = client.executeMethod(post);
        // System.out.println("[WekaServer] Response from master server : " +
        // result);
        if (result == 401) {
            System.err.println("[WekaServer] Unable to get remote status of task'" + origTaskID
                    + "' - authentication required.\n");
        } else {

            // the response
            is = post.getResponseBodyAsStream();
            ObjectInputStream ois = new ObjectInputStream(new BufferedInputStream(new GZIPInputStream(is)));
            Object response = ois.readObject();
            if (response.toString().startsWith(WekaServlet.RESPONSE_ERROR)) {
                System.err.println("[WekaServer] A problem occurred while "
                        + "trying to retrieve remote status of task : '" + origTaskID + "'");

            } else {
                if (response instanceof TaskStatusInfo) {
                    resultInfo = ((TaskStatusInfo) response);
                } else {
                    System.err.println("[WekaServer] A problem occurred while "
                            + "trying to retrieve remote status of task : '" + origTaskID + "'");
                }
            }
        }
    } catch (Exception ex) {
        System.err.println("[WekaServer] A problem occurred while "
                + "trying to retrieve remote status of task : '" + origTaskID + "' (" + ex.getMessage() + ")");
        System.err.println("Remote task id: " + remoteTaskID);
    } finally {
        if (is != null) {
            try {
                is.close();
                is = null;
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

        if (post != null) {
            post.releaseConnection();
            post = null;
        }
    }

    return resultInfo;
}

From source file:weka.server.knowledgeFlow.FlowRunnerRemote.java

/**
 * Execute the current flow remotely on the server
 * //  w  w w.jav  a2 s  .com
 * @throws Exception if a problem occurs
 */
public void executeFlowRemote() throws Exception {
    Exception exception = null;

    NamedTask taskToRun = null;

    if (m_schedule == null) {
        taskToRun = new UnscheduledNamedKFTask(NAME_PREFIX + m_name, m_flowXML, m_sequential, m_parameters);
    } else {
        taskToRun = new ScheduledNamedKFTask(NAME_PREFIX + m_name, m_flowXML, m_sequential, m_parameters,
                m_schedule);

    }

    InputStream is = null;
    // BufferedInputStream bi = null;
    PostMethod post = null;

    try {

        // serialized and compressed
        byte[] serializedTask = WekaServer.serializeTask(taskToRun);
        System.out.println("Sending " + serializedTask.length + " bytes...");

        String service = ExecuteTaskServlet.CONTEXT_PATH + "/?client=Y";
        post = new PostMethod(constructURL(service));
        RequestEntity entity = new ByteArrayRequestEntity(serializedTask);
        post.setRequestEntity(entity);

        post.setDoAuthentication(true);
        post.addRequestHeader(new Header("Content-Type", "application/octet-stream"));

        // Get HTTP client
        HttpClient client = WekaServer.ConnectionManager.getSingleton().createHttpClient();
        WekaServer.ConnectionManager.addCredentials(client, m_username, m_password);

        // Execute request

        int result = client.executeMethod(post);
        System.out.println("Response status from server : " + result);

        // the response
        /*
         * is = post.getResponseBodyAsStream(); bi = new BufferedInputStream(is);
         * StringBuffer bodyB = new StringBuffer(); int c; while ((c =
         * bi.read())!=-1) { bodyB.append((char)c); }
         */

        if (result == 401) {
            // Security problem - authentication required
            /*
             * bodyB.setLength(0); bodyB.append("Unable to send task to server - " +
             * "authentication required.\n");
             */
            System.err.println("Unable to send task to server - authentication required.\n");
        } else {

            is = post.getResponseBodyAsStream();
            ObjectInputStream ois = new ObjectInputStream(is);
            // System.out.println("Number of bytes in response " + ois.available());
            Object response = ois.readObject();
            if (response.toString().startsWith(WekaServlet.RESPONSE_ERROR)) {
                System.err.println("A problem occurred at the sever : \n" + "\t" + response.toString());
            } else {
                System.out.println("Task ID from server : " + response.toString());
            }

            /*
             * String body = bodyB.toString(); if
             * (body.startsWith(WekaServlet.RESPONSE_ERROR)) {
             * System.err.println("A problem occurred at the sever : \n" + "\t" +
             * body); } else { System.out.println("Task ID from server : " + body);
             * }
             */
        }

    } catch (Exception ex) {
        ex.printStackTrace();
        exception = ex;
    } finally {
        /*
         * if (bi != null) { bi.close(); }
         */

        if (is != null) {
            is.close();
        }

        if (post != null) {
            // Release current connection to the connection pool
            post.releaseConnection();
        }
    }

    if (exception != null) {
        throw new Exception(exception.fillInStackTrace());
    }
}

From source file:weka.server.knowledgeFlow.legacy.FlowRunnerRemote.java

/**
 * Execute the current flow remotely on the server
 * /*from  w  w  w .j a  va  2 s.  c  o m*/
 * @throws Exception if a problem occurs
 */
public void executeFlowRemote() throws Exception {
    Exception exception = null;

    NamedTask taskToRun = null;

    if (m_schedule == null) {
        taskToRun = new LegacyUnscheduledNamedKFTask(NAME_PREFIX + m_name, m_flowXML, m_sequential,
                m_parameters);
    } else {
        taskToRun = new LegacyScheduledNamedKFTask(NAME_PREFIX + m_name, m_flowXML, m_sequential, m_parameters,
                m_schedule);

    }

    InputStream is = null;
    // BufferedInputStream bi = null;
    PostMethod post = null;

    try {

        // serialized and compressed
        byte[] serializedTask = WekaServer.serializeTask(taskToRun);
        System.out.println("Sending " + serializedTask.length + " bytes...");

        String service = ExecuteTaskServlet.CONTEXT_PATH + "/?client=Y";
        post = new PostMethod(constructURL(service));
        RequestEntity entity = new ByteArrayRequestEntity(serializedTask);
        post.setRequestEntity(entity);

        post.setDoAuthentication(true);
        post.addRequestHeader(new Header("Content-Type", "application/octet-stream"));

        // Get HTTP client
        HttpClient client = WekaServer.ConnectionManager.getSingleton().createHttpClient();
        WekaServer.ConnectionManager.addCredentials(client, m_username, m_password);

        // Execute request

        int result = client.executeMethod(post);
        System.out.println("Response status from server : " + result);

        // the response
        /*
         * is = post.getResponseBodyAsStream(); bi = new BufferedInputStream(is);
         * StringBuffer bodyB = new StringBuffer(); int c; while ((c =
         * bi.read())!=-1) { bodyB.append((char)c); }
         */

        if (result == 401) {
            // Security problem - authentication required
            /*
             * bodyB.setLength(0); bodyB.append("Unable to send task to server - " +
             * "authentication required.\n");
             */
            System.err.println("Unable to send task to server - authentication required.\n");
        } else {

            is = post.getResponseBodyAsStream();
            ObjectInputStream ois = new ObjectInputStream(is);
            // System.out.println("Number of bytes in response " + ois.available());
            Object response = ois.readObject();
            if (response.toString().startsWith(WekaServlet.RESPONSE_ERROR)) {
                System.err.println("A problem occurred at the sever : \n" + "\t" + response.toString());
            } else {
                System.out.println("Task ID from server : " + response.toString());
            }

            /*
             * String body = bodyB.toString(); if
             * (body.startsWith(WekaServlet.RESPONSE_ERROR)) {
             * System.err.println("A problem occurred at the sever : \n" + "\t" +
             * body); } else { System.out.println("Task ID from server : " + body);
             * }
             */
        }

    } catch (Exception ex) {
        ex.printStackTrace();
        exception = ex;
    } finally {
        /*
         * if (bi != null) { bi.close(); }
         */

        if (is != null) {
            is.close();
        }

        if (post != null) {
            // Release current connection to the connection pool
            post.releaseConnection();
        }
    }

    if (exception != null) {
        throw new Exception(exception.fillInStackTrace());
    }
}

From source file:weka.server.PurgeTaskServlet.java

protected String purgeRemote(String slave, String remoteTaskID, String origTaskID) {

    String ok = "";
    InputStream is = null;/* w w  w .j  a v a  2s .  c  o m*/
    PostMethod post = null;

    try {
        String url = "http://" + slave;
        url = url.replace(" ", "%20");
        url += CONTEXT_PATH;
        url += "/?name=" + URLEncoder.encode(remoteTaskID, "UTF-8") + "&client=Y";
        post = new PostMethod(url);
        post.setDoAuthentication(true);
        post.addRequestHeader(new Header("Content-Type", "text/plain"));

        // Get HTTP client
        HttpClient client = WekaServer.ConnectionManager.getSingleton().createHttpClient();
        WekaServer.ConnectionManager.addCredentials(client, m_server.getUsername(), m_server.getPassword());

        // Execute request
        int result = client.executeMethod(post);
        // System.out.println("[WekaServer] Response from master server : " +
        // result);
        if (result == 401) {
            System.err.println("[WekaServer] Unable to purge remote task '" + origTaskID
                    + "' - authentication required.\n");
            ok = "Unable to purge remote task '" + origTaskID + "' - authentication required for slave ("
                    + slave + ")";
        } else {

            // the response
            is = post.getResponseBodyAsStream();
            ObjectInputStream ois = new ObjectInputStream(is);
            Object response = ois.readObject();
            if (response.toString().startsWith(WekaServlet.RESPONSE_ERROR)) {
                System.err.println("[WekaServer] A problem occurred while " + "trying to purge task : '"
                        + origTaskID + "' from remote server (" + slave + "). Remote " + "task ID : "
                        + remoteTaskID);
                ok = "A problem occurred while " + "trying to purge task : '" + origTaskID
                        + "' from remote server (" + slave + "). Remote " + "task ID : " + remoteTaskID;
            }
        }
    } catch (Exception ex) {
        System.err.println("[WekaServer] A problem occurred while " + "trying to purge task : '" + origTaskID
                + "' from remote server: " + slave + " (" + ex.getMessage() + ")");
        ok = "A problem occurred while " + "trying to purge task : '" + origTaskID + "' from remote server: "
                + slave + " (" + ex.getMessage() + ")";
    } finally {
        if (is != null) {
            try {
                is.close();
                is = null;
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

        if (post != null) {
            post.releaseConnection();
            post = null;
        }
    }

    return ok;
}