Spring Framework example source code file (XsltViewTests.java)

This example Spring Framework source code file (XsltViewTests.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

classpathresource, element, element, exception, exception, hashmap, hashmap, io, list, map, map, mockhttpservletresponse, parser, product, sax, string, util, xml, xsltview

The Spring Framework XsltViewTests.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.xslt;

import java.io.IOException;
import java.io.InputStreamReader;
import java.io.StringReader;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.Source;
import javax.xml.transform.stream.StreamSource;

import junit.framework.TestCase;
import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
import org.xml.sax.SAXException;

import org.springframework.context.support.StaticApplicationContext;
import org.springframework.core.JdkVersion;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;
import org.springframework.mock.web.MockHttpServletRequest;
import org.springframework.mock.web.MockHttpServletResponse;
import org.springframework.test.AssertThrows;

/**
 * @author Rob Harrop
 * @author Juergen Hoeller
 */
public class XsltViewTests extends TestCase {

	private static final String HTML_OUTPUT = "org/springframework/web/servlet/view/xslt/products.xsl";

	private MockHttpServletRequest request;

	private MockHttpServletResponse response;

	protected void setUp() throws Exception {
		this.request = new MockHttpServletRequest();
		this.response = new MockHttpServletResponse();
	}

	public void testWithNoSource() throws Exception {
		final XsltView view = getXsltView(HTML_OUTPUT);
		new AssertThrows(IllegalArgumentException.class) {
			public void test() throws Exception {
				view.render(new HashMap(), request, response);
			}
		}.runTest();
	}

	public void testWithoutUrl() throws Exception {
		final XsltView view = new XsltView();
		new AssertThrows(IllegalArgumentException.class) {
			public void test() throws Exception {
				view.afterPropertiesSet();
			}
		}.runTest();
	}

	public void testSimpleTransformWithSource() throws Exception {
		Source source = new StreamSource(getProductDataResource().getInputStream());
		Map model = new HashMap();
		model.put("someKey", source);
		doTestWithModel(model);
	}

	public void testSimpleTransformWithDocument() throws Exception {
		org.w3c.dom.Document document = getDomDocument();
		Map model = new HashMap();
		model.put("someKey", document);
		doTestWithModel(model);
	}

	public void testSimpleTransformWithNode() throws Exception {
		org.w3c.dom.Document document = getDomDocument();
		Map model = new HashMap();
		model.put("someKey", document.getDocumentElement());
		doTestWithModel(model);
	}

	public void testSimpleTransformWithInputStream() throws Exception {
		Map model = new HashMap();
		model.put("someKey", getProductDataResource().getInputStream());
		doTestWithModel(model);
	}

	public void testSimpleTransformWithReader() throws Exception {
		Map model = new HashMap();
		model.put("someKey", new InputStreamReader(getProductDataResource().getInputStream()));
		doTestWithModel(model);
	}

	public void testSimpleTransformWithResource() throws Exception {
		Map model = new HashMap();
		model.put("someKey", getProductDataResource());
		doTestWithModel(model);
	}

	public void testWithSourceKey() throws Exception {
		XsltView view = getXsltView(HTML_OUTPUT);
		view.setSourceKey("actualData");

		Map model = new HashMap();
		model.put("actualData", getProductDataResource());
		model.put("otherData", new ClassPathResource("dummyData.xsl", getClass()));

		view.render(model, this.request, this.response);
		assertHtmlOutput(this.response.getContentAsString());
	}

	public void testContentTypeCarriedFromTemplate() throws Exception {
		XsltView view = getXsltView(HTML_OUTPUT);

		Source source = new StreamSource(getProductDataResource().getInputStream());
		Map model = new HashMap();
		model.put("someKey", source);

		view.render(model, this.request, this.response);
		assertTrue(this.response.getContentType().startsWith("text/html"));
		assertEquals("UTF-8", this.response.getCharacterEncoding());
	}

	public void testModelParametersCarriedAcross() throws Exception {
		Map model = new HashMap();
		model.put("someKey", getProductDataResource());
		model.put("title", "Product List");
		doTestWithModel(model);
		assertTrue(this.response.getContentAsString().indexOf("Product List") > -1);
	}

	public void testStaticAttributesCarriedAcross() throws Exception {
		XsltView view = getXsltView(HTML_OUTPUT);
		view.setSourceKey("actualData");
		view.addStaticAttribute("title", "Product List");

		Map model = new HashMap();
		model.put("actualData", getProductDataResource());
		model.put("otherData", new ClassPathResource("dummyData.xsl", getClass()));

		view.render(model, this.request, this.response);
		assertHtmlOutput(this.response.getContentAsString());
		assertTrue(this.response.getContentAsString().indexOf("Product List") > -1);

	}

	private org.w3c.dom.Document getDomDocument() throws ParserConfigurationException, SAXException, IOException {
		DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
		DocumentBuilder builder = dbf.newDocumentBuilder();
		org.w3c.dom.Document document = builder.parse(getProductDataResource().getInputStream());
		return document;
	}

	private void doTestWithModel(Map model) throws Exception {
		XsltView view = getXsltView(HTML_OUTPUT);
		view.render(model, this.request, this.response);
		assertHtmlOutput(this.response.getContentAsString());
	}

	private void assertHtmlOutput(String output) throws Exception {
		if (JdkVersion.getMajorJavaVersion() < JdkVersion.JAVA_15) {
			// TODO: find out why the SAXReader.read call fails on JDK 1.4 and 1.3
			return;
		}

		SAXReader reader = new SAXReader();
		Document document = reader.read(new StringReader(output));
		List nodes = document.getRootElement().selectNodes("/html/body/table/tr");

		Element tr1 = (Element) nodes.get(0);
		assertRowElement(tr1, "1", "Whatsit", "12.99");
		Element tr2 = (Element) nodes.get(1);
		assertRowElement(tr2, "2", "Thingy", "13.99");
		Element tr3 = (Element) nodes.get(2);
		assertRowElement(tr3, "3", "Gizmo", "14.99");
		Element tr4 = (Element) nodes.get(3);
		assertRowElement(tr4, "4", "Cranktoggle", "11.99");
	}

	private void assertRowElement(Element elem, String id, String name, String price) {
		Element idElem = (Element) elem.elements().get(0);
		Element nameElem = (Element) elem.elements().get(1);
		Element priceElem = (Element) elem.elements().get(2);

		assertEquals("ID incorrect.", id, idElem.getText());
		assertEquals("Name incorrect.", name, nameElem.getText());
		assertEquals("Price incorrect.", price, priceElem.getText());
	}

	private XsltView getXsltView(String templatePath) {
		XsltView view = new XsltView();
		view.setUrl(templatePath);
		view.setApplicationContext(new StaticApplicationContext());
		view.initApplicationContext();
		return view;
	}

	private Resource getProductDataResource() {
		return new ClassPathResource("productData.xml", getClass());
	}
}