/*
* Copyright 2015 Red Hat, Inc. and/or its affiliates.
*
* Licensed 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.uberfire.server;
import java.io.IOException;
import java.util.Iterator;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
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 org.apache.commons.io.IOUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.uberfire.io.IOService;
import org.uberfire.java.nio.file.Path;
public abstract class BaseUploadServlet extends BaseFilteredServlet {
private static final Logger logger = LoggerFactory.getLogger(BaseUploadServlet.class);
protected FileItem getFileItem(HttpServletRequest request) throws FileUploadException {
final Iterator iterator = getServletFileUpload().parseRequest(request).iterator();
while (iterator.hasNext()) {
FileItem item = (FileItem) iterator.next();
if (!item.isFormField()) {
return item;
}
}
return null;
}
protected void writeResponse(HttpServletResponse response,
String ok) throws IOException {
response.setContentType("text/html");
response.getWriter().write(ok);
response.getWriter().flush();
}
protected ServletFileUpload getServletFileUpload() {
FileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload upload = new ServletFileUpload(factory);
upload.setHeaderEncoding("UTF-8");
return upload;
}
protected void writeFile(final IOService ioService,
final Path path,
final FileItem uploadedItem) throws IOException {
if (!ioService.exists(path)) {
ioService.createFile(path);
}
ioService.write(path,
IOUtils.toByteArray(uploadedItem.getInputStream()));
uploadedItem.getInputStream().close();
}
protected void logError(Throwable e) {
logger.error("Failed to upload a file.",
e);
}
}