org.carrot2.dcs.HttpClientPostProvider.java Source code

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Here is the source code for org.carrot2.dcs.HttpClientPostProvider.java

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/*
 * Carrot2 project.
 *
 * Copyright (C) 2002-2010, Dawid Weiss, Stanisaw Osiski.
 * All rights reserved.
 *
 * Refer to the full license file "carrot2.LICENSE"
 * in the root folder of the repository checkout or at:
 * http://www.carrot2.org/carrot2.LICENSE
 */

package org.carrot2.dcs;

import java.io.*;
import java.net.URI;
import java.util.*;

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpStatus;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.methods.multipart.*;

/**
 * HTTP POST provider using Apache HTTP client.
 */
public class HttpClientPostProvider implements IHttpMultipartPostProvider {
    public InputStream post(URI dcsURI, Map<String, String> attributes) throws IOException {
        final HttpClient client = new HttpClient();
        final PostMethod post = new PostMethod(dcsURI.toString());
        final List<Part> parts = new ArrayList<Part>();
        for (Map.Entry<String, String> entry : attributes.entrySet()) {
            parts.add(new StringPart(entry.getKey(), entry.getValue()));
        }
        post.setRequestEntity(new MultipartRequestEntity(parts.toArray(new Part[parts.size()]), post.getParams()));

        try {
            if (client.executeMethod(post) != HttpStatus.SC_OK) {
                throw new IOException(
                        "Unexpected DCS response: " + post.getStatusCode() + ": " + post.getStatusText());
            }

            final byte[] body = StreamUtils.readFullyAndClose(post.getResponseBodyAsStream());
            return new ByteArrayInputStream(body);
        } finally {
            post.releaseConnection();
        }
    }

    public static void main(String[] args) throws IOException {
        new Examples(new HttpClientPostProvider()).runAllExamples();
    }
}