Java tutorial
/* * Licensed to the OpenXdata Foundation (OXDF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The OXDF 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. * * Copyright 2010 http://www.openxdata.org. */ package org.openxdata.server.servlet; import java.io.IOException; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.io.IOUtils; import org.openxdata.server.OpenXDataConstants; import org.springframework.web.multipart.MultipartFile; import org.springframework.web.multipart.MultipartHttpServletRequest; import org.springframework.web.multipart.commons.CommonsMultipartResolver; /** * Servlet that handles opening of files. * * @author daniel * */ public class FormOpenServlet extends HttpServlet { public static final long serialVersionUID = 111111111111113L; private static final String KEY_FILE_CONTENTS = "FileContents"; @Override protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setHeader("Cache-Control", "no-cache"); response.setHeader("Pragma", "no-cache"); response.setDateHeader("Expires", -1); response.setHeader("Cache-Control", "no-store"); response.setContentType(OpenXDataConstants.HTTP_HEADER_CONTENT_TYPE_XML); response.getOutputStream().print((String) request.getSession().getAttribute(KEY_FILE_CONTENTS)); } @Override protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { try { CommonsMultipartResolver multipartResover = new CommonsMultipartResolver(/*this.getServletContext()*/); if (multipartResover.isMultipart(request)) { MultipartHttpServletRequest multipartRequest = multipartResover.resolveMultipart(request); MultipartFile uploadedFile = multipartRequest.getFile("filecontents"); if (uploadedFile != null && !uploadedFile.isEmpty()) request.getSession().setAttribute(KEY_FILE_CONTENTS, IOUtils.toString(uploadedFile.getInputStream(), "UTF-8")); } } catch (Exception ex) { ex.printStackTrace(); } } }