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Spring Framework example source code file (ClassPathXmlApplicationContextTests.java)

This example Spring Framework source code file (ClassPathXmlApplicationContextTests.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

autowiredservice, classpathresource, classpathresource, classpathxmlapplicationcontext, classpathxmlapplicationcontext, genericapplicationcontext, io, ioexception, object, service, service, string, string, stringwriter, util, xmlbeandefinitionreader

The Spring Framework ClassPathXmlApplicationContextTests.java source code

/*
 * Copyright 2002-2008 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.context.support;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.io.StringWriter;
import java.util.Arrays;
import java.util.List;
import java.util.Map;

import junit.framework.TestCase;

import org.springframework.aop.support.AopUtils;
import org.springframework.beans.ResourceTestBean;
import org.springframework.beans.TypeMismatchException;
import org.springframework.beans.factory.BeanCreationException;
import org.springframework.beans.factory.BeanFactoryUtils;
import org.springframework.beans.factory.CannotLoadBeanClassException;
import org.springframework.beans.factory.xml.XmlBeanDefinitionReader;
import org.springframework.context.ApplicationListener;
import org.springframework.context.MessageSource;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.FileSystemResource;
import org.springframework.core.io.Resource;
import org.springframework.util.FileCopyUtils;
import org.springframework.util.ObjectUtils;

/**
 * @author Juergen Hoeller
 */
public class ClassPathXmlApplicationContextTests extends TestCase {

	public void testSingleConfigLocation() {
		ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext(
				"/org/springframework/context/support/simpleContext.xml");
		assertTrue(ctx.containsBean("someMessageSource"));
		ctx.close();
	}

	public void testMultipleConfigLocations() {
		ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext(
				new String[] {
					"/org/springframework/context/support/test/contextB.xml",
					"/org/springframework/context/support/test/contextC.xml",
					"/org/springframework/context/support/test/contextA.xml"});
		assertTrue(ctx.containsBean("service"));
		assertTrue(ctx.containsBean("logicOne"));
		assertTrue(ctx.containsBean("logicTwo"));
		Service service = (Service) ctx.getBean("service");
		ctx.refresh();
		assertTrue(service.isProperlyDestroyed());
		service = (Service) ctx.getBean("service");
		ctx.close();
		assertTrue(service.isProperlyDestroyed());
	}

	public void testConfigLocationPattern() {
		ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext(
				"/org/springframework/context/support/test/context*.xml");
		assertTrue(ctx.containsBean("service"));
		assertTrue(ctx.containsBean("logicOne"));
		assertTrue(ctx.containsBean("logicTwo"));
		Service service = (Service) ctx.getBean("service");
		ctx.close();
		assertTrue(service.isProperlyDestroyed());
	}

	public void testSingleConfigLocationWithClass() {
		ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext(
				"simpleContext.xml", getClass());
		assertTrue(ctx.containsBean("someMessageSource"));
		ctx.close();
	}

	public void testAliasWithPlaceholder() {
		ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext(
				new String[] {
					"/org/springframework/context/support/test/contextB.xml",
					"/org/springframework/context/support/test/aliased-contextC.xml",
					"/org/springframework/context/support/test/contextA.xml"});
		assertTrue(ctx.containsBean("service"));
		assertTrue(ctx.containsBean("logicOne"));
		assertTrue(ctx.containsBean("logicTwo"));
		ctx.refresh();
	}

	public void testContextWithInvalidValueType() throws IOException {
		ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(
				new String[] {"/org/springframework/context/support/invalidValueType.xml"}, false);
		try {
			context.refresh();
			fail("Should have thrown BeanCreationException");
		}
		catch (BeanCreationException ex) {
			assertTrue(ex.contains(TypeMismatchException.class));
			assertTrue(ex.toString().indexOf("someMessageSource") != -1);
			assertTrue(ex.toString().indexOf("useCodeAsDefaultMessage") != -1);
			checkExceptionFromInvalidValueType(ex);
			checkExceptionFromInvalidValueType(new ExceptionInInitializerError(ex));
			assertFalse(context.isActive());
		}
	}

	private void checkExceptionFromInvalidValueType(Throwable ex) throws IOException {
		ByteArrayOutputStream baos = new ByteArrayOutputStream();
		ex.printStackTrace(new PrintStream(baos));
		String dump = FileCopyUtils.copyToString(
				new InputStreamReader(new ByteArrayInputStream(baos.toByteArray())));
		assertTrue(dump.indexOf("someMessageSource") != -1);
		assertTrue(dump.indexOf("useCodeAsDefaultMessage") != -1);
	}

	public void testContextWithInvalidLazyClass() {
		ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext(
				"invalidClass.xml", getClass());
		assertTrue(ctx.containsBean("someMessageSource"));
		try {
			ctx.getBean("someMessageSource");
			fail("Should have thrown CannotLoadBeanClassException");
		}
		catch (CannotLoadBeanClassException ex) {
			assertTrue(ex.contains(ClassNotFoundException.class));
		}
		ctx.close();
	}

	public void testContextWithClassNameThatContainsPlaceholder() {
		ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext(
				"classWithPlaceholder.xml", getClass());
		assertTrue(ctx.containsBean("someMessageSource"));
		assertTrue(ctx.getBean("someMessageSource") instanceof StaticMessageSource);
		ctx.close();
	}

	public void testMultipleConfigLocationsWithClass() {
		ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext(
				new String[] {"test/contextB.xml", "test/contextC.xml", "test/contextA.xml"}, getClass());
		assertTrue(ctx.containsBean("service"));
		assertTrue(ctx.containsBean("logicOne"));
		assertTrue(ctx.containsBean("logicTwo"));
		ctx.close();
	}

	public void testFactoryBeanAndApplicationListener() {
		ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext(
				"/org/springframework/context/support/test/context*.xml");
		ctx.getBeanFactory().registerSingleton("manualFBAAL", new FactoryBeanAndApplicationListener());
		assertEquals(2, ctx.getBeansOfType(ApplicationListener.class).size());
		ctx.close();
	}

	public void testMessageSourceAware() {
		ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext(
				"/org/springframework/context/support/test/context*.xml");
		MessageSource messageSource = (MessageSource) ctx.getBean("messageSource");
		Service service1 = (Service) ctx.getBean("service");
		assertEquals(ctx, service1.getMessageSource());
		Service service2 = (Service) ctx.getBean("service2");
		assertEquals(ctx, service2.getMessageSource());
		AutowiredService autowiredService1 = (AutowiredService) ctx.getBean("autowiredService");
		assertEquals(messageSource, autowiredService1.getMessageSource());
		AutowiredService autowiredService2 = (AutowiredService) ctx.getBean("autowiredService2");
		assertEquals(messageSource, autowiredService2.getMessageSource());
		ctx.close();
	}

	public void testResourceArrayPropertyEditor() throws IOException {
		ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext(
				"/org/springframework/context/support/test/context*.xml");
		Service service = (Service) ctx.getBean("service");
		assertEquals(3, service.getResources().length);
		List resources = Arrays.asList(service.getResources());
		assertTrue(resources.contains(
		    new FileSystemResource(new ClassPathResource("/org/springframework/context/support/test/contextA.xml").getFile())));
		assertTrue(resources.contains(
		    new FileSystemResource(new ClassPathResource("/org/springframework/context/support/test/contextB.xml").getFile())));
		assertTrue(resources.contains(
		    new FileSystemResource(new ClassPathResource("/org/springframework/context/support/test/contextC.xml").getFile())));
		ctx.close();
	}

	public void testChildWithProxy() throws Exception {
		ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext(
				"/org/springframework/context/support/test/context*.xml");
		ClassPathXmlApplicationContext child = new ClassPathXmlApplicationContext(
				new String[] {"/org/springframework/context/support/childWithProxy.xml"}, ctx);
		assertTrue(AopUtils.isAopProxy(child.getBean("assemblerOne")));
		assertTrue(AopUtils.isAopProxy(child.getBean("assemblerTwo")));
		ctx.close();
	}

	public void testAliasForParentContext() {
		ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext(
				"/org/springframework/context/support/simpleContext.xml");
		assertTrue(ctx.containsBean("someMessageSource"));

		ClassPathXmlApplicationContext child = new ClassPathXmlApplicationContext(
				new String[] {"/org/springframework/context/support/aliasForParent.xml"}, ctx);
		assertTrue(child.containsBean("someMessageSource"));
		assertTrue(child.containsBean("yourMessageSource"));
		assertTrue(child.containsBean("myMessageSource"));
		assertTrue(child.isSingleton("someMessageSource"));
		assertTrue(child.isSingleton("yourMessageSource"));
		assertTrue(child.isSingleton("myMessageSource"));
		assertEquals(StaticMessageSource.class, child.getType("someMessageSource"));
		assertEquals(StaticMessageSource.class, child.getType("yourMessageSource"));
		assertEquals(StaticMessageSource.class, child.getType("myMessageSource"));

		Object someMs = child.getBean("someMessageSource");
		Object yourMs = child.getBean("yourMessageSource");
		Object myMs = child.getBean("myMessageSource");
		assertSame(someMs, yourMs);
		assertSame(someMs, myMs);

		String[] aliases = child.getAliases("someMessageSource");
		assertEquals(2, aliases.length);
		assertEquals("myMessageSource", aliases[0]);
		assertEquals("yourMessageSource", aliases[1]);
		aliases = child.getAliases("myMessageSource");
		assertEquals(2, aliases.length);
		assertEquals("someMessageSource", aliases[0]);
		assertEquals("yourMessageSource", aliases[1]);

		child.close();
		ctx.close();
	}

	public void testAliasThatOverridesParent() {
		ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext(
				"/org/springframework/context/support/simpleContext.xml");
		Object someMs = ctx.getBean("someMessageSource");

		ClassPathXmlApplicationContext child = new ClassPathXmlApplicationContext(
				new String[] {"/org/springframework/context/support/aliasThatOverridesParent.xml"}, ctx);
		Object myMs = child.getBean("myMessageSource");
		Object someMs2 = child.getBean("someMessageSource");
		assertSame(myMs, someMs2);
		assertNotSame(someMs, someMs2);
		assertOneMessageSourceOnly(child, myMs);
	}

	public void testAliasThatOverridesEarlierBean() {
		ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext(
				new String[] {"/org/springframework/context/support/simpleContext.xml",
											"/org/springframework/context/support/aliasThatOverridesParent.xml"});
		Object myMs = ctx.getBean("myMessageSource");
		Object someMs2 = ctx.getBean("someMessageSource");
		assertSame(myMs, someMs2);
		assertOneMessageSourceOnly(ctx, myMs);
	}

	private void assertOneMessageSourceOnly(ClassPathXmlApplicationContext ctx, Object myMessageSource) {
		String[] beanNamesForType = ctx.getBeanNamesForType(StaticMessageSource.class);
		assertEquals(1, beanNamesForType.length);
		assertEquals("myMessageSource", beanNamesForType[0]);
		beanNamesForType = ctx.getBeanNamesForType(StaticMessageSource.class, true, true);
		assertEquals(1, beanNamesForType.length);
		assertEquals("myMessageSource", beanNamesForType[0]);
		beanNamesForType = BeanFactoryUtils.beanNamesForTypeIncludingAncestors(ctx, StaticMessageSource.class);
		assertEquals(1, beanNamesForType.length);
		assertEquals("myMessageSource", beanNamesForType[0]);
		beanNamesForType = BeanFactoryUtils.beanNamesForTypeIncludingAncestors(ctx, StaticMessageSource.class, true, true);
		assertEquals(1, beanNamesForType.length);
		assertEquals("myMessageSource", beanNamesForType[0]);

		Map beansOfType = ctx.getBeansOfType(StaticMessageSource.class);
		assertEquals(1, beansOfType.size());
		assertSame(myMessageSource, beansOfType.values().iterator().next());
		beansOfType = ctx.getBeansOfType(StaticMessageSource.class, true, true);
		assertEquals(1, beansOfType.size());
		assertSame(myMessageSource, beansOfType.values().iterator().next());
		beansOfType = BeanFactoryUtils.beansOfTypeIncludingAncestors(ctx, StaticMessageSource.class);
		assertEquals(1, beansOfType.size());
		assertSame(myMessageSource, beansOfType.values().iterator().next());
		beansOfType = BeanFactoryUtils.beansOfTypeIncludingAncestors(ctx, StaticMessageSource.class, true, true);
		assertEquals(1, beansOfType.size());
		assertSame(myMessageSource, beansOfType.values().iterator().next());
	}

	public void testResourceAndInputStream() throws IOException {
		ClassPathXmlApplicationContext ctx =
		    new ClassPathXmlApplicationContext("/org/springframework/beans/factory/xml/resource.xml") {
			public Resource getResource(String location) {
				if ("classpath:org/springframework/beans/factory/xml/test.properties".equals(location)) {
					return new ClassPathResource("test.properties", ClassPathXmlApplicationContextTests.class);
				}
				return super.getResource(location);
			}
		};
		ResourceTestBean resource1 = (ResourceTestBean) ctx.getBean("resource1");
		ResourceTestBean resource2 = (ResourceTestBean) ctx.getBean("resource2");
		assertTrue(resource1.getResource() instanceof ClassPathResource);
		StringWriter writer = new StringWriter();
		FileCopyUtils.copy(new InputStreamReader(resource1.getResource().getInputStream()), writer);
		assertEquals("contexttest", writer.toString());
		writer = new StringWriter();
		FileCopyUtils.copy(new InputStreamReader(resource1.getInputStream()), writer);
		assertEquals("contexttest", writer.toString());
		writer = new StringWriter();
		FileCopyUtils.copy(new InputStreamReader(resource2.getResource().getInputStream()), writer);
		assertEquals("contexttest", writer.toString());
		writer = new StringWriter();
		FileCopyUtils.copy(new InputStreamReader(resource2.getInputStream()), writer);
		assertEquals("contexttest", writer.toString());
		ctx.close();
	}

	public void testGenericApplicationContextWithXmlBeanDefinitions() {
		GenericApplicationContext ctx = new GenericApplicationContext();
		XmlBeanDefinitionReader reader = new XmlBeanDefinitionReader(ctx);
		reader.loadBeanDefinitions(new ClassPathResource("test/contextB.xml", getClass()));
		reader.loadBeanDefinitions(new ClassPathResource("test/contextC.xml", getClass()));
		reader.loadBeanDefinitions(new ClassPathResource("test/contextA.xml", getClass()));
		ctx.refresh();
		assertTrue(ctx.containsBean("service"));
		assertTrue(ctx.containsBean("logicOne"));
		assertTrue(ctx.containsBean("logicTwo"));
		ctx.close();
	}

	public void testGenericApplicationContextWithXmlBeanDefinitionsAndClassLoaderNull() {
		GenericApplicationContext ctx = new GenericApplicationContext();
		ctx.setClassLoader(null);
		XmlBeanDefinitionReader reader = new XmlBeanDefinitionReader(ctx);
		reader.loadBeanDefinitions(new ClassPathResource("test/contextB.xml", getClass()));
		reader.loadBeanDefinitions(new ClassPathResource("test/contextC.xml", getClass()));
		reader.loadBeanDefinitions(new ClassPathResource("test/contextA.xml", getClass()));
		ctx.refresh();
		assertEquals(ObjectUtils.identityToString(ctx), ctx.getId());
		assertEquals(ObjectUtils.identityToString(ctx), ctx.getDisplayName());
		assertTrue(ctx.containsBean("service"));
		assertTrue(ctx.containsBean("logicOne"));
		assertTrue(ctx.containsBean("logicTwo"));
		ctx.close();
	}

	public void testGenericApplicationContextWithXmlBeanDefinitionsAndSpecifiedId() {
		GenericApplicationContext ctx = new GenericApplicationContext();
		ctx.setId("testContext");
		XmlBeanDefinitionReader reader = new XmlBeanDefinitionReader(ctx);
		reader.loadBeanDefinitions(new ClassPathResource("test/contextB.xml", getClass()));
		reader.loadBeanDefinitions(new ClassPathResource("test/contextC.xml", getClass()));
		reader.loadBeanDefinitions(new ClassPathResource("test/contextA.xml", getClass()));
		ctx.refresh();
		assertEquals("testContext", ctx.getId());
		assertEquals("testContext", ctx.getDisplayName());
		assertTrue(ctx.containsBean("service"));
		assertTrue(ctx.containsBean("logicOne"));
		assertTrue(ctx.containsBean("logicTwo"));
		ctx.close();
	}

}

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