110 lines
3.7 KiB
Java
110 lines
3.7 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.catalina.startup;
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import java.io.IOException;
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import java.io.PrintWriter;
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import java.net.URL;
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import java.net.URLClassLoader;
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import javax.servlet.ServletException;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import org.junit.Assert;
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import org.junit.Test;
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import org.apache.catalina.Context;
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import org.apache.catalina.loader.WebappClassLoaderBase;
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import org.apache.tomcat.util.buf.ByteChunk;
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public class TestTomcatClassLoader extends TomcatBaseTest {
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@Test
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public void testDefaultClassLoader() throws Exception {
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Tomcat tomcat = getTomcatInstance();
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// No file system docBase required
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Context ctx = tomcat.addContext("", null);
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Tomcat.addServlet(ctx, "ClassLoaderReport", new ClassLoaderReport(null));
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ctx.addServletMappingDecoded("/", "ClassLoaderReport");
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tomcat.start();
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ByteChunk res = getUrl("http://localhost:" + getPort() + "/");
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Assert.assertEquals("WEBAPP,SYSTEM,OTHER,", res.toString());
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}
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@Test
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public void testNonDefaultClassLoader() throws Exception {
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ClassLoader cl = new URLClassLoader(new URL[0],
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Thread.currentThread().getContextClassLoader());
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Thread.currentThread().setContextClassLoader(cl);
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Tomcat tomcat = getTomcatInstance();
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tomcat.getServer().setParentClassLoader(cl);
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// No file system docBase required
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Context ctx = tomcat.addContext("", null);
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Tomcat.addServlet(ctx, "ClassLoaderReport", new ClassLoaderReport(cl));
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ctx.addServletMappingDecoded("/", "ClassLoaderReport");
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tomcat.start();
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ByteChunk res = getUrl("http://localhost:" + getPort() + "/");
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Assert.assertEquals("WEBAPP,CUSTOM,SYSTEM,OTHER,", res.toString());
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}
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private static final class ClassLoaderReport extends HttpServlet {
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private static final long serialVersionUID = 1L;
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private transient ClassLoader custom;
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public ClassLoaderReport(ClassLoader custom) {
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this.custom = custom;
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}
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@Override
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protected void doGet(HttpServletRequest req, HttpServletResponse resp)
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throws ServletException, IOException {
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resp.setContentType("text/plain");
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PrintWriter out = resp.getWriter();
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ClassLoader system = ClassLoader.getSystemClassLoader();
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ClassLoader cl = Thread.currentThread().getContextClassLoader();
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while (cl != null) {
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if (system == cl) {
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out.print("SYSTEM,");
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} else if (custom == cl) {
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out.print("CUSTOM,");
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} else if (cl instanceof WebappClassLoaderBase) {
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out.print("WEBAPP,");
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} else {
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out.print("OTHER,");
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}
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cl = cl.getParent();
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}
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}
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}
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}
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