Java Context類代碼示例

import org.apache.catalina.Context; //導入依賴的package包/類
/**
 * Set the Container with which this Manager has been associated. If it is a
 * Context (the usual case), listen for changes to the session timeout
 * property.
 * 
 * @param container
 *            The associated Container
 */
public void setContainer(Container container) {

    // De-register from the old Container (if any)
    if ((this.container != null) && (this.container instanceof Context))
        ((Context) this.container).removePropertyChangeListener(this);

    // Default processing provided by our superclass
    super.setContainer(container);

    // Register with the new Container (if any)
    if ((this.container != null) && (this.container instanceof Context)) {
        setMaxInactiveInterval
            ( ((Context) this.container).getSessionTimeout()*60 );
        ((Context) this.container).addPropertyChangeListener(this);
    }

}
 

import org.apache.catalina.Context; //導入依賴的package包/類
@Test
public void testConnectToRootEndpoint() throws Exception {

    Tomcat tomcat = getTomcatInstance();
    // No file system docBase required
    Context ctx = tomcat.addContext("", null);
    ctx.addApplicationListener(TesterEchoServer.Config.class.getName());
    Tomcat.addServlet(ctx, "default", new DefaultServlet());
    ctx.addServletMapping("/", "default");
    Context ctx2 = tomcat.addContext("/foo", null);
    ctx2.addApplicationListener(TesterEchoServer.Config.class.getName());
    Tomcat.addServlet(ctx2, "default", new DefaultServlet());
    ctx2.addServletMapping("/", "default");

    tomcat.start();

    echoTester("");
    echoTester("/");
    // FIXME: The ws client doesn't handle any response other than the upgrade,
    // which may or may not be allowed. In that case, the server will return
    // a redirect to the root of the webapp to avoid possible broken relative
    // paths.
    // echoTester("/foo");
    echoTester("/foo/");
}
 

import org.apache.catalina.Context; //導入依賴的package包/類
@Override
public void sessionEvent(SessionEvent event) {
	if (!Session.SESSION_DESTROYED_EVENT.equals(event.getType())) {
		return;
	}

	Session session = event.getSession();
	Manager manager = session.getManager();
	if (manager == null) {
		return;
	}
	Context context = (Context) manager.getContainer();
	Authenticator authenticator = context.getAuthenticator();
	if (!(authenticator instanceof AuthenticatorBase)) {
		return;
	}
	SingleSignOn sso = ((AuthenticatorBase) authenticator).sso;
	if (sso == null) {
		return;
	}
	sso.sessionDestroyed(ssoId, session);
}
 

import org.apache.catalina.Context; //導入依賴的package包/類
/**
 * Set the Container with which this Logger has been associated.
 *
 * @param container The associated Container
 */
@Override
public void setContainer(Container container) {

    // Deregister from the old Container (if any)
    if ((this.container != null) && (this.container instanceof Context))
        ((Context) this.container).removePropertyChangeListener(this);

    // Process this property change
    Container oldContainer = this.container;
    this.container = container;
    support.firePropertyChange("container", oldContainer, this.container);

    // Register with the new Container (if any)
    if ((this.container != null) && (this.container instanceof Context)) {
        setReloadable( ((Context) this.container).getReloadable() );
        ((Context) this.container).addPropertyChangeListener(this);
    }

}
 

import org.apache.catalina.Context; //導入依賴的package包/類
/**
 * Start the background thread that will periodically check for
 * session timeouts.
 *
 * @exception IllegalStateException if we should not be starting
 *  a background thread now
 */
private void threadStart() {

    // Has the background thread already been started?
    if (thread != null)
        return;

    // Validate our current state
    if (!reloadable)
        throw new IllegalStateException
            (sm.getString("webappLoader.notReloadable"));
    if (!(container instanceof Context))
        throw new IllegalStateException
            (sm.getString("webappLoader.notContext"));

    // Start the background thread
    if (debug >= 1)
        log(" Starting background thread");
    threadDone = false;
    threadName = "WebappLoader[" + container.getName() + "]";
    thread = new Thread(this, threadName);
    thread.setDaemon(true);
    thread.start();

}
 

import org.apache.catalina.Context; //導入依賴的package包/類
/**
 * Construct a new instance of this class, configured according to the
 * specified parameters.  If both servletPath and pathInfo are
 * <code>null</code>, it will be assumed that this RequestDispatcher
 * was acquired by name, rather than by path.
 *
 * @param wrapper The Wrapper associated with the resource that will
 *  be forwarded to or included (required)
 * @param requestURI The request URI to this resource (if any)
 * @param servletPath The revised servlet path to this resource (if any)
 * @param pathInfo The revised extra path information to this resource
 *  (if any)
 * @param queryString Query string parameters included with this request
 *  (if any)
 * @param name Servlet name (if a named dispatcher was created)
 *  else <code>null</code>
 */
public ApplicationDispatcher
    (Wrapper wrapper, String requestURI, String servletPath,
     String pathInfo, String queryString, String name) {

    super();

    // Save all of our configuration parameters
    this.wrapper = wrapper;
    this.context = (Context) wrapper.getParent();
    this.requestURI = requestURI;
    this.servletPath = servletPath;
    this.pathInfo = pathInfo;
    this.queryString = queryString;
    this.name = name;
    if (wrapper instanceof StandardWrapper)
        this.support = ((StandardWrapper) wrapper).getInstanceSupport();
    else
        this.support = new InstanceSupport(wrapper);

}
 

import org.apache.catalina.Context; //導入依賴的package包/類
/**
 * Unregister wrapper.
 */
private void unregisterWrapper(Wrapper wrapper) {

	Context context = (Context) wrapper.getParent();
	String contextPath = context.getPath();
	String wrapperName = wrapper.getName();

	if ("/".equals(contextPath)) {
		contextPath = "";
	}
	String version = context.getWebappVersion();
	String hostName = context.getParent().getName();

	String[] mappings = wrapper.findMappings();

	for (String mapping : mappings) {
		mapper.removeWrapper(hostName, contextPath, version, mapping);
	}

	if (log.isDebugEnabled()) {
		log.debug(sm.getString("mapperListener.unregisterWrapper", wrapperName, contextPath, connector));
	}
}
 

import org.apache.catalina.Context; //導入依賴的package包/類
private void pathParamExtenionTest(String path, String expected)
        throws Exception {
    // Setup Tomcat instance
    Tomcat tomcat = getTomcatInstance();

    // No file system docBase required
    Context ctx = tomcat.addContext("/testapp", null);

    Tomcat.addServlet(ctx, "servlet", new PathParamServlet());
    ctx.addServletMapping("*.txt", "servlet");

    tomcat.start();

    ByteChunk res = getUrl("http://localhost:" + getPort() + path);
    Assert.assertEquals(expected, res.toString());
}
 

import org.apache.catalina.Context; //導入依賴的package包/類
@Test
public void testTldListener() throws Exception {
    // Set up a container
    Tomcat tomcat = getTomcatInstance();

    File docBase = new File("test/webapp-3.0");
    Context ctx = tomcat.addContext("", docBase.getAbsolutePath());

    // Start the context
    tomcat.start();

    // Stop the context
    ctx.stop();

    String log = TesterTldListener.getLog();
    Assert.assertTrue(log, log.contains("PASS-01"));
    Assert.assertTrue(log, log.contains("PASS-02"));
    Assert.assertFalse(log, log.contains("FAIL"));
}
 

import org.apache.catalina.Context; //導入依賴的package包/類
/**
 * Remove an existing Context.
 *
 * @param name MBean Name of the comonent to remove
 *
 * @exception Exception if a component cannot be removed
 */
public void removeContext(String name) throws Exception {
    // Acquire a reference to the component to be removed
    ObjectName oname = new ObjectName(name);
    String serviceName = oname.getKeyProperty("service");
    String hostName = oname.getKeyProperty("host");
    String contextName = getPathStr(oname.getKeyProperty("path"));
    Server server = ServerFactory.getServer();
    Service service = server.findService(serviceName);
    Engine engine = (Engine) service.getContainer();
    Host host = (Host) engine.findChild(hostName);
    Context context = (Context) host.findChild(contextName);

    // Remove this component from its parent component
    host.removeChild(context);

}
 

import org.apache.catalina.Context; //導入依賴的package包/類
@Test
public void testUtf8Body() throws Exception {
    Tomcat tomcat = getTomcatInstance();
    // No file system docBase required
    Context root = tomcat.addContext("", null);
    Tomcat.addServlet(root, "Echo", new Utf8Echo());
    root.addServletMapping("/test", "Echo");

    tomcat.getConnector().setProperty("soTimeout", "300000");
    tomcat.start();

    for (Utf8TestCase testCase : TestUtf8.TEST_CASES) {
        String expected = null;
        if (testCase.invalidIndex == -1) {
            expected = testCase.outputReplaced;
        }
        doUtf8BodyTest(testCase.description, testCase.input, expected);
    }
}
 

import org.apache.catalina.Context; //導入依賴的package包/類
@Test
public void testTimeoutDispatchCustomErrorPage() throws Exception {
    Tomcat tomcat = getTomcatInstance();
    Context context = tomcat.addContext("", null);
    tomcat.addServlet("", "timeout", Bug58751AsyncServlet.class.getName())
            .setAsyncSupported(true);
    CustomErrorServlet customErrorServlet = new CustomErrorServlet();
    Tomcat.addServlet(context, "customErrorServlet", customErrorServlet);
    context.addServletMapping("/timeout", "timeout");
    context.addServletMapping("/error", "customErrorServlet");
    ErrorPage errorPage = new ErrorPage();
    errorPage.setLocation("/error");
    context.addErrorPage(errorPage);
    tomcat.start();

    ByteChunk responseBody = new ByteChunk();
    int rc = getUrl("http://localhost:" + getPort() + "/timeout", responseBody, null);

    Assert.assertEquals(503, rc);
    Assert.assertEquals(CustomErrorServlet.ERROR_MESSAGE, responseBody.toString());
}
 

import org.apache.catalina.Context; //導入依賴的package包/類
protected Session[] getSessionsForPath(String path) {
    if ((path == null) || (!path.startsWith("/") && path.equals(""))) {
        throw new IllegalArgumentException(sm.getString("managerServlet.invalidPath",
                                    RequestUtil.filter(path)));
    }
    String displayPath = path;
    if( path.equals("/") )
        path = "";
    Context context = (Context) host.findChild(path);
    if (null == context) {
        throw new IllegalArgumentException(sm.getString("managerServlet.noContext",
                                    RequestUtil.filter(displayPath)));
    }
    Session[] sessions = context.getManager().findSessions();
    return sessions;
}
 

import org.apache.catalina.Context; //導入依賴的package包/類
/**
 * Test for https://bz.apache.org/bugzilla/show_bug.cgi?id=47866
 */
@Test
public void testGetResource() throws Exception {
    Tomcat tomcat = getTomcatInstance();

    String contextPath = "/examples";

    File appDir = new File(getBuildDirectory(), "webapps" + contextPath);
    // app dir is relative to server home
    Context ctx =
        tomcat.addWebapp(null, "/examples", appDir.getAbsolutePath());

    Tomcat.addServlet(ctx, "testGetResource", new GetResource());
    ctx.addServletMapping("/testGetResource", "testGetResource");

    tomcat.start();

    ByteChunk res = new ByteChunk();

    int rc =getUrl("http://localhost:" + getPort() + contextPath +
            "/testGetResource", res, null);
    assertEquals(HttpServletResponse.SC_OK, rc);
    assertTrue(res.toString().contains("<?xml version=\"1.0\" "));
}
 

import org.apache.catalina.Context; //導入依賴的package包/類
/**
 * Find and return the ErrorPage instance for the specified exception's
 * class, or an ErrorPage instance for the closest superclass for which
 * there is such a definition.  If no associated ErrorPage instance is
 * found, return <code>null</code>.
 *
 * @param context The Context in which to search
 * @param exception The exception for which to find an ErrorPage
 */
private static ErrorPage findErrorPage
    (Context context, Throwable exception) {

    if (exception == null)
        return (null);
    Class<?> clazz = exception.getClass();
    String name = clazz.getName();
    while (!Object.class.equals(clazz)) {
        ErrorPage errorPage = context.findErrorPage(name);
        if (errorPage != null)
            return (errorPage);
        clazz = clazz.getSuperclass();
        if (clazz == null)
            break;
        name = clazz.getName();
    }
    return (null);

}