128 lines
4.1 KiB
Text
128 lines
4.1 KiB
Text
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<%-- $This file is distributed under the terms of the license in /doc/license.txt$ --%>
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<%@ page import="org.apache.commons.fileupload.disk.DiskFileItemFactory" %>
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<%@ page import="org.apache.commons.fileupload.servlet.ServletFileUpload" %>
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<%@ page import="org.apache.commons.fileupload.FileItem" %>
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<%@ page import="java.util.Iterator" %>
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<%@ page import="java.util.List" %>
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<%@ page import="java.io.File" %>
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<%@ taglib uri="http://java.sun.com/jstl/core" prefix="c" %>
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<%-- This is a jsp to handle uploading files. --%>
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<%-- It was written with Datastar in mind --%>
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<%-- This JSP code expects that the user is logged in,
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that a datastar project is specified, and that the
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request is a multipart POST. --%>
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<%-- Since this is for Datastar we need the URI of the user
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who is uploading this file, the URI of the project it is
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associated with and a project spcific directory to save
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the file to. %>
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<%! static final int MAX_IN_MEM_SIZE = 1024*1024 * 50 ; //50 Mbyte file limit %>
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<%-- http://vivo.library.cornell.edu/ns/0.1#coordinatorOf --%>
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<%-- http://vivo.library.cornell.edu/ns/0.1#resourceAuthor --%>
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<%! static final int MAX_IN_MEM_SIZE = 1024*1024 * 50; %>
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<%
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if( ! ServletFileUpload.isMultipartContent(request) ){
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//return an error message0.
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out.write("<html><p>you need to submit a file.</p></html>");
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return;
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}
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//Create a factory for disk-based file items
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DiskFileItemFactory factory = new DiskFileItemFactory();
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factory.setSizeThreshold(MAX_IN_MEM_SIZE);
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// Create a new file upload handler
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ServletFileUpload upload = new ServletFileUpload(factory);
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upload.setSizeMax(MAX_IN_MEM_SIZE);
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// Parse the request
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List /* FileItem */ items = upload.parseRequest(request);
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String user = getUserUri(request);
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String project = getProjectUri(request);
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String dir = getDirectory(user,project,request);
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if( ! canWriteDirectory( dir )){
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out.write( doDirectoryWriteError( dir ) );
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return;
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}
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Iterator iter = items.iterator();
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while( iter.hasNext()){
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FileItem item = (FileItem)iter.next();
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if( item.isFormField()){
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out.write("<p>");
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out.write("fieldname: " + item.getFieldName() + " value: " + item.getString() );
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out.write("</p>");
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}else{
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System.out.println("fileUPloadProcess.jsp: attempting to upload a file" );
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out.write("<p>");
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out.write("form field name: " + item.getFieldName()
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+" filename: " + item.getName()
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+" type: " + item.getContentType()
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+" isInMem: " + item.isInMemory() );
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out.write("</p>");
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String fileLocation = dir + '/' + item.getName();
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if( fileWithNameAlreadyExists( fileLocation ) ){
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doFileExistsError( fileLocation );
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return;
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}
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File uploadedFile = new File( fileLocation );
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item.write( uploadedFile );
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}
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}
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%>
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<%!
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public String getDirectory(String userUri, String projectUri, HttpServletRequest request){
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//this should be stored in the model as a dataproperty on the project
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return "/usr/local/datastar/data";
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}
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public String getUserUri( HttpServletRequest request ){
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return "http://vivo.library.cornell.edu/ns/0.1#individual762"; //Medha Devare
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}
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public String getProjectUri( HttpServletRequest request ){
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return "http://vivo.library.cornell.edu/ns/0.1#individual1"; //Mann Lib.
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}
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%>
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<%!
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public boolean canWriteDirectory( String dir ){
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File df = new File(dir);
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//attempt to create directory if not found
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if( ! df.exists() ){
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if( !df.mkdir() )
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return false;
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}
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return df.canWrite();
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}
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public String doDirectoryWriteError( String dir ) {
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return "The system could not save your file, contact you system"
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+" administrators and inform them that the directory "
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+ dir + " is not writeable";
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}
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public boolean fileWithNameAlreadyExists( String fileLocation ){
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File f = new File(fileLocation);
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return f.exists();
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}
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public String doFileExistsError( String file ) {
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return "There is already a file named " + file + " on the system. Please rename your file " ;
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}
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%>
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