/*
* 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.
*/
package org.apache.shindig.protocol.multipart;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileItemFactory;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import java.io.IOException;
import java.net.UnknownServiceException;
import java.util.Collection;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import com.google.common.collect.Lists;
/**
* Implementation of MultipartFormParser using Apache Commons file upload.
*/
public class DefaultMultipartFormParser implements MultipartFormParser {
private static final String MULTIPART = "multipart/";
public Collection<FormDataItem> parse(HttpServletRequest servletRequest)
throws IOException {
FileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload upload = new ServletFileUpload(factory);
try {
@SuppressWarnings("unchecked")
List<FileItem> fileItems = upload.parseRequest(servletRequest);
return convertToFormData(fileItems);
} catch (FileUploadException e) {
UnknownServiceException use = new UnknownServiceException("File upload error.");
use.initCause(e);
throw use;
}
}
private Collection<FormDataItem> convertToFormData(List<FileItem> fileItems) {
List<FormDataItem> formDataItems =
Lists.newArrayListWithCapacity(fileItems.size());
for (FileItem item : fileItems) {
formDataItems.add(new CommonsFormDataItem(item));
}
return formDataItems;
}
public boolean isMultipartContent(HttpServletRequest request) {
if (!"POST".equals(request.getMethod())) {
return false;
}
String contentType = request.getContentType();
if (contentType == null) {
return false;
}
return contentType.toLowerCase().startsWith(MULTIPART);
}
}