com.dlmu.heipacker.crawler.client.ClientChunkEncodedPost.java Source code

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Here is the source code for com.dlmu.heipacker.crawler.client.ClientChunkEncodedPost.java

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/*
 * ====================================================================
 *
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 */

package com.dlmu.heipacker.crawler.client;

import java.io.File;
import java.io.FileInputStream;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.InputStreamEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;

/**
 * Example how to use unbuffered chunk-encoded POST request.
 */
public class ClientChunkEncodedPost {

    public static void main(String[] args) throws Exception {
        if (args.length != 1) {
            System.out.println("File path not given");
            System.exit(1);
        }
        HttpClient httpclient = new DefaultHttpClient();
        try {
            HttpPost httppost = new HttpPost(
                    "http://localhost:8080" + "/servlets-examples/servlet/RequestInfoExample");

            File file = new File(args[0]);

            InputStreamEntity reqEntity = new InputStreamEntity(new FileInputStream(file), -1);
            reqEntity.setContentType("binary/octet-stream");
            reqEntity.setChunked(true);
            // It may be more appropriate to use FileEntity class in this particular
            // instance but we are using a more generic InputStreamEntity to demonstrate
            // the capability to stream out data from any arbitrary source
            //
            // FileEntity entity = new FileEntity(file, "binary/octet-stream");

            httppost.setEntity(reqEntity);

            System.out.println("executing request " + httppost.getRequestLine());
            HttpResponse response = httpclient.execute(httppost);
            HttpEntity resEntity = response.getEntity();

            System.out.println("----------------------------------------");
            System.out.println(response.getStatusLine());
            if (resEntity != null) {
                System.out.println("Response content length: " + resEntity.getContentLength());
                System.out.println("Chunked?: " + resEntity.isChunked());
            }
            EntityUtils.consume(resEntity);
        } finally {
            // When HttpClient instance is no longer needed,
            // shut down the connection manager to ensure
            // immediate deallocation of all system resources
            httpclient.getConnectionManager().shutdown();
        }
    }

}