Hallo Lauri,
> -----Ursprüngliche Nachricht-----
> Von: Lauri <dbam...@hotmail.com>
> Gesendet: Montag, 29. Mai 2023 11:36
> An: users@tomcat.apache.org
> Betreff: Cannot upload an image file from a deployed JSP page in Tomcat 10
>
> 1) Summary of the problem:
>
> From Tomcat 10 and onwards there has been a move from Java EE to Jakarta
> EE as part of the transfer of Java EE to the Eclipse Foundation, the primary
> package for all implemented APIs has changed from javax.* to jakarta.*.
>
> I have a JSP page deployed in Tomcat 10 that is intended to upload a file
> from the desktop (Windows 10) to the server where Tomcat 10 is running
> (OEL 8).
> I am unable to upload an image, and I get this error:
> -
> org.apache.jasper.JasperException: Unable to compile class for JSP:
> An error occurred at line: [24] in the jsp file: [/index.jsp] The type
> javax.servlet.http.HttpServletRequest cannot be resolved. It is indirectly
> referenced from required type
> org.apache.commons.fileupload.servlet.ServletFileUpload
> 21: ServletFileUpload upload = new ServletFileUpload(factory);
> 22:
> 23: // Parse the request
> 24: List<FileItem> items = upload.parseRequest(request);
> 25:
> 26: // Process the uploaded items
> 27: Iterator<FileItem> iter = items.iterator();
> -
>
> My application name: TESTS
> I have these libraries for the TESTS application:
> /u01/tomcat/base/middleware/tomcat10/webapps/TESTS/WEB-INF/lib:
> commons-fileupload-1.5-test-sources.jar
> commons-fileupload-1.5-tests.jar
> commons-fileupload-1.5-sources.jar
> commons-fileupload-1.5-javadoc.jar
> commons-fileupload-1.5.jar
>
> I have in my Tomcat 10 this library:
> /u01/tomcat/base/middleware/tomcat10/lib:
> -rw-r--r--. 1 tomcat tomcat 365905 Apr 25 12:16 servlet-api.jar
>
> 2) The deployed JSP page:
>
> -
> <%@ page import="org.apache.commons.fileupload.*" %> <%@ page
> import="org.apache.commons.fileupload.disk.*" %> <%@ page
> import="org.apache.commons.fileupload.servlet.*" %> <%@ page
> import="java.io.*" %> <%@ page import="java.util.*" %> <%@ page
> import="jakarta.servlet.*" %> <%@ page import="jakarta.servlet.http.*" %>
> <%@ page import="jakarta.sql.*" %> <%@ page import="java.sql.*" %>
> <%@ page
> import="org.apache.commons.fileupload.disk.DiskFileItemFactory" %> <%@
> page import="org.apache.commons.fileupload.FileItemFactory" %>
>
> <%
> // Set the upload directory
> String uploadDir = "/tmp/";
>
> // Create a factory for disk-based file items FileItemFactory factory = new
> DiskFileItemFactory();
>
> // Create a new file upload handler
> ServletFileUpload upload = new ServletFileUpload(factory);
>
> // Parse the request
> List<FileItem> items = upload.parseRequest(request);
>
> // Process the uploaded items
> Iterator<FileItem> iter = items.iterator(); while (iter.hasNext()) {
> FileItem item = iter.next();
>
> // If the item is a file, save it to the upload directory
> if (!item.isFormField()) {
> String fileName = new File(item.getName()).getName();
> String filePath = uploadDir + fileName;
> File uploadedFile = new File(filePath);
> item.write(uploadedFile);
> }
> }
> %>
> <html>
> <head>
> <title>File Upload Example</title>
> </head>
> <body>
> <h1>File Upload Example</h1>
> <form method="post" enctype="multipart/form-data">
> <input type="file" name="file" />
> <br />
> <input type="submit" value="Upload" />
> </form>
> </body>
> </html>
> -
>
> I have found that it looks like:
> https://www.linuxquestions.org/questions/linux-server-73/fileupload-class-
> not-working-with-tomcat-10-a-4175710078/
> But in my situation, it seems to be a different problem.
>
> Does someone know if this is related to a bug ?
> Do I use the correct servlet-api jar package ?
> Do Tomcat 10 need to be specifically configured for using servlet-api and
> jakarta EE packages ?
> Does someone know what can be the problem ?
>
> Thanks by advance for any tip(s) and/or suggestion(s).
I had the same issue because I used internal Tomcat classes.
In the past the servlet specification didn't have methods to deal with
multipart uploads.
Since Servlet 3.0 there are methods for retrieving the uploads:
https://docs.oracle.com/javaee/6/tutorial/doc/gmhba.html
I replace the ServletFileUpload and used standard methods like getParts().
This worked for me.
Greetings,
Thomas
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