Spring Framework example source code file (PdfViewTests.java)

This example Spring Framework source code file (PdfViewTests.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 - Spring Framework tags/keywords

abstractpdfview, bytearrayoutputstream, bytearrayoutputstream, document, document, exception, http, io, mockhttpservletrequest, mockhttpservletrequest, mockhttpservletresponse, mockhttpservletresponse, paragraph, pdf, pdfwriter, request, response, servlet, testcase, util

The Spring Framework PdfViewTests.java source code

/*
 * Copyright 2002-2007 the original author or authors.
 *
 * Licensed 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.springframework.web.servlet.view.document;

import java.io.ByteArrayOutputStream;
import java.util.HashMap;
import java.util.Map;

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

import com.lowagie.text.Document;
import com.lowagie.text.PageSize;
import com.lowagie.text.Paragraph;
import com.lowagie.text.pdf.PdfWriter;
import junit.framework.TestCase;

import org.springframework.mock.web.MockHttpServletRequest;
import org.springframework.mock.web.MockHttpServletResponse;

/**
 * @author Alef Arendsen
 * @author Juergen Hoeller
 */
public class PdfViewTests extends TestCase {

	public void testPdf() throws Exception {
		final String text = "this should be in the PDF";
		MockHttpServletRequest request = new MockHttpServletRequest();
		MockHttpServletResponse response = new MockHttpServletResponse();

		AbstractPdfView pdfView = new AbstractPdfView() {
			protected void buildPdfDocument(Map model, Document document, PdfWriter writer,
					HttpServletRequest request, HttpServletResponse response) throws Exception {
				document.add(new Paragraph(text));
			}
		};

		pdfView.render(new HashMap(), request, response);
		byte[] pdfContent = response.getContentAsByteArray();
		assertEquals("correct response content type", "application/pdf", response.getContentType());
		assertEquals("correct response content length", pdfContent.length, response.getContentLength());

		// rebuild iText document for comparison
		Document document = new Document(PageSize.A4);
		ByteArrayOutputStream baos = new ByteArrayOutputStream();
		PdfWriter writer = PdfWriter.getInstance(document, baos);
		writer.setViewerPreferences(PdfWriter.AllowPrinting | PdfWriter.PageLayoutSinglePage);
		document.open();
		document.add(new Paragraph(text));
		document.close();
		byte[] baosContent = baos.toByteArray();
		assertEquals("correct size", pdfContent.length, baosContent.length);

		int diffCount = 0;
		for (int i = 0; i < pdfContent.length; i++) {
			if (pdfContent[i] != baosContent[i]) {
				diffCount++;
			}
		}
		assertTrue("difference only in encryption", diffCount < 70);
	}

}