org.jgrasstools.server.jetty.fileupload.FileUpoadServlet Maven / Gradle / Ivy

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package org.jgrasstools.server.jetty.fileupload;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Iterator;
import java.util.List;

import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

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;

public class FileUpoadServlet extends HttpServlet {

    private static final long serialVersionUID = 1L;
    // public static final long MAX_UPLOAD_IN_MEGS = 50;

    public void doGet( HttpServletRequest request, HttpServletResponse response ) throws IOException {
        doPost(request, response);
    }

    public void doPost( HttpServletRequest request, HttpServletResponse response ) throws IOException {
        response.setContentType("text/html");
        PrintWriter out = response.getWriter();

        out.println("Hello
");

        boolean isMultipartContent = ServletFileUpload.isMultipartContent(request);
        if (!isMultipartContent) {
            out.println("You are not trying to upload
");
            return;
        }
        out.println("You are trying to upload
");

        FileItemFactory factory = new DiskFileItemFactory();
        ServletFileUpload upload = new ServletFileUpload(factory);
        // upload.setSizeMax(MAX_UPLOAD_IN_MEGS * 1024 * 1024);

        FileUploadProgressListener fileuploadProgressListener = new FileUploadProgressListener();
        upload.setProgressListener(fileuploadProgressListener);

        HttpSession session = request.getSession();
        session.setAttribute("testProgressListener", fileuploadProgressListener);

        try {
            List fields = upload.parseRequest(request);
            out.println("Number of fields: " + fields.size() + "

");
            Iterator it = fields.iterator();
            if (!it.hasNext()) {
                out.println("No fields found");
                return;
            }
            out.println("");
            while( it.hasNext() ) {
                out.println("");
                FileItem fileItem = it.next();
                boolean isFormField = fileItem.isFormField();
                if (isFormField) {
                    out.println("");
                } else {
                    out.println("");
                }
                out.println("");
            }
            out.println("regular form field FIELD NAME: " + fileItem.getFieldName() + "
STRING: "
                            + fileItem.getString());
                    out.println(" file form field FIELD NAME: " + fileItem.getFieldName() +
                    // "
STRING: " + fileItem.getString() +
                            "
NAME: " + fileItem.getName() + "
CONTENT TYPE: " + fileItem.getContentType()
                            + "
SIZE (BYTES): " + fileItem.getSize() + "
TO STRING: " + fileItem.toString());
                    out.println("");
        } catch (FileUploadException e) {
            out.println("Error: " + e.getMessage());
            e.printStackTrace();
        }
    }
}