Commons FileUpload example source code file (SizesTest.java)

This example Commons FileUpload source code file (SizesTest.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Commons FileUpload tags/keywords

bytearrayoutputstream, content_type, diskfileitemfactory, diskfileitemfactory, fileitem, fileitem, fileuploadexception, http, io, ioexception, request, response, servlet, servletfileupload, servletfileupload, string, this, us-ascii, us-ascii, util

The Commons FileUpload SizesTest.java source code

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF 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.
 */
package org.apache.commons.fileupload;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;

import javax.servlet.http.HttpServletRequest;

import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;


/**
 * Unit test for items with varying sizes.
 */
public class SizesTest extends FileUploadTestCase
{
	/** Runs a test with varying file sizes.
	 */
	public void testFileUpload()
            throws IOException, FileUploadException
    {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        int add = 16;
        int num = 0;
        for (int i = 0;  i < 16384;  i += add) {
            if (++add == 32) {
                add = 16;
            }
            String header = "-----1234\r\n"
                + "Content-Disposition: form-data; name=\"field" + (num++) + "\"\r\n"
                + "\r\n";
            baos.write(header.getBytes("US-ASCII"));
            for (int j = 0;  j < i;  j++) {
                baos.write((byte) j);
            }
            baos.write("\r\n".getBytes("US-ASCII"));
        }
        baos.write("-----1234--\r\n".getBytes("US-ASCII"));

        List fileItems = parseUpload(baos.toByteArray());
        Iterator fileIter = fileItems.iterator();
        add = 16;
        num = 0;
        for (int i = 0;  i < 16384;  i += add) {
            if (++add == 32) {
                add = 16;
            }
            FileItem item = (FileItem) fileIter.next();
            assertEquals("field" + (num++), item.getFieldName());
            byte[] bytes = item.get();
            assertEquals(i, bytes.length);
            for (int j = 0;  j < i;  j++) {
                assertEquals((byte) j, bytes[j]);
            }
        }
        assertTrue(!fileIter.hasNext());
    }

	/** Checks, whether limiting the file size works.
	 */
	public void testFileSizeLimit()
            throws IOException, FileUploadException
    {
		final String request =
			"-----1234\r\n" +
			"Content-Disposition: form-data; name=\"file\"; filename=\"foo.tab\"\r\n" +
			"Content-Type: text/whatever\r\n" +
			"\r\n" +
			"This is the content of the file\n" +
			"\r\n" +
			"-----1234--\r\n";

		ServletFileUpload upload = new ServletFileUpload(new DiskFileItemFactory());
		upload.setFileSizeMax(-1);
        HttpServletRequest req = new MockHttpServletRequest(request.getBytes("US-ASCII"), CONTENT_TYPE);
        List fileItems = upload.parseRequest(req);
        assertEquals(1, fileItems.size());
        FileItem item = (FileItem) fileItems.get(0);
        assertEquals("This is the content of the file\n", new String(item.get()));
        
		upload = new ServletFileUpload(new DiskFileItemFactory());
		upload.setFileSizeMax(40);
        req = new MockHttpServletRequest(request.getBytes("US-ASCII"), CONTENT_TYPE);
        fileItems = upload.parseRequest(req);
        assertEquals(1, fileItems.size());
        item = (FileItem) fileItems.get(0);
        assertEquals("This is the content of the file\n", new String(item.get()));

		upload = new ServletFileUpload(new DiskFileItemFactory());
		upload.setFileSizeMax(30);
        req = new MockHttpServletRequest(request.getBytes("US-ASCII"), CONTENT_TYPE);
        try {
        	upload.parseRequest(req);
        	fail("Expected exception.");
        } catch (FileUploadBase.FileSizeLimitExceededException e) {
        	assertEquals(30, e.getPermittedSize());
        }
    }
}