fr.ippon.wip.http.request.MultipartRequestBuilder.java Source code

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Here is the source code for fr.ippon.wip.http.request.MultipartRequestBuilder.java

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/*
 *   Copyright 2010,2011 Ippon Technologies 
 *  
 *   This file is part of Web Integration Portlet (WIP).
 *   Web Integration Portlet (WIP) is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU Lesser General Public License as published by
 *   the Free Software Foundation, either version 3 of the License, or
 *   (at your option) any later version.
 *
 *   Web Integration Portlet (WIP) is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU Lesser General Public License for more details.
 *
 *   You should have received a copy of the GNU Lesser General Public License
 *   along with Web Integration Portlet (WIP).  If not, see <http://www.gnu.org/licenses/>.
 */

package fr.ippon.wip.http.request;

import java.io.InputStream;
import java.io.Serializable;
import java.net.URISyntaxException;
import java.util.List;
import java.util.Map.Entry;

import javax.portlet.ActionRequest;

import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItem;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.portlet.PortletFileUpload;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpRequestBase;
import org.apache.http.entity.mime.HttpMultipartMode;
import org.apache.http.entity.mime.MultipartEntity;
import org.apache.http.entity.mime.content.InputStreamBody;
import org.apache.http.entity.mime.content.StringBody;

import com.google.common.collect.Multimap;

/**
 * Container class for all data describing a POST multipart-content request from
 * a remote host.
 * 
 * @author Yohan Legat
 * 
 */
public class MultipartRequestBuilder extends AbstractRequestBuilder implements Serializable, RequestBuilder {

    private static PortletFileUpload fileUploadPortlet;

    private List<DiskFileItem> files;

    {
        DiskFileItemFactory factory = new DiskFileItemFactory(0, null);
        fileUploadPortlet = new PortletFileUpload(factory);
    }

    protected MultipartRequestBuilder(String url, ResourceType resourceType, ActionRequest portletRequest,
            Multimap<String, String> parameterMap) throws FileUploadException {
        super(url, HttpMethod.POST, resourceType, parameterMap);
        files = fileUploadPortlet.parseRequest(portletRequest);
    }

    public HttpRequestBase buildHttpRequest() throws URISyntaxException {
        MultipartEntity multipartEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
        try {
            for (DiskFileItem fileItem : files) {
                if (fileItem.isFormField())
                    multipartEntity.addPart(fileItem.getFieldName(), new StringBody(new String(fileItem.get())));
                else {
                    //               FileBody fileBody = new FileBody(fileItem.getStoreLocation(), fileItem.getName(), fileItem.getContentType(), fileItem.getCharSet());
                    InputStreamBody fileBody = new InputStreamKnownSizeBody(fileItem.getInputStream(),
                            fileItem.get().length, fileItem.getContentType(), fileItem.getName());
                    multipartEntity.addPart(fileItem.getFieldName(), fileBody);
                }
            }

            // some request may have additional parameters in a query string
            if (parameterMap != null)
                for (Entry<String, String> entry : parameterMap.entries())
                    multipartEntity.addPart(entry.getKey(), new StringBody(entry.getValue()));

        } catch (Exception e) {
            e.printStackTrace();
        }

        HttpPost postRequest = new HttpPost(requestedURL);
        postRequest.setEntity(multipartEntity);
        return postRequest;
    }

    /*
     * With InputStreamBody, getContentLength() method return -1 so we have to override it
     */
    private class InputStreamKnownSizeBody extends InputStreamBody {
        private int lenght;

        public InputStreamKnownSizeBody(final InputStream in, final int lenght, final String mimeType,
                final String filename) {
            super(in, mimeType, filename);
            this.lenght = lenght;
        }

        @Override
        public long getContentLength() {
            return this.lenght;
        }
    }
}