import org.apache.catalina.util.StandardSessionIdGenerator; //导入依赖的package包/类
/**
 * Start this component and implement the requirements
 * of {@link org.apache.catalina.util.LifecycleBase#startInternal()}.
 *
 * @exception LifecycleException if this component detects a fatal error
 *  that prevents this component from being used
 */
@Override
protected synchronized void startInternal() throws LifecycleException {
    
    // Look up the SingleSignOn implementation in our request processing
    // path, if there is one
    Container parent = context.getParent();
    while ((sso == null) && (parent != null)) {
        Valve valves[] = parent.getPipeline().getValves();
        for (int i = 0; i < valves.length; i++) {
            if (valves[i] instanceof SingleSignOn) {
                sso = (SingleSignOn) valves[i];
                break;
            }
        }
        if (sso == null)
            parent = parent.getParent();
    }
    if (log.isDebugEnabled()) {
        if (sso != null)
            log.debug("Found SingleSignOn Valve at " + sso);
        else
            log.debug("No SingleSignOn Valve is present");
    }

    sessionIdGenerator = new StandardSessionIdGenerator();
    sessionIdGenerator.setSecureRandomAlgorithm(getSecureRandomAlgorithm());
    sessionIdGenerator.setSecureRandomClass(getSecureRandomClass());
    sessionIdGenerator.setSecureRandomProvider(getSecureRandomProvider());

    super.startInternal();
}
 

import org.apache.catalina.util.StandardSessionIdGenerator; //导入依赖的package包/类
@Test
public void test() throws Exception {
	StandardContext context = new StandardContext();
	context.setName("foo");
	WebappLoader loader = new WebappLoader() {
		@Override
		public ClassLoader getClassLoader() {
			return WebappLoader.class.getClassLoader();
		}
	};
	context.setLoader(loader);
	StandardHost host = new StandardHost();
	StandardEngine engine = new StandardEngine();
	engine.setService(new StandardService());
	host.setParent(engine);
	context.setParent(host);
	loader.setContext(context);

	RedisSessionManager manager = new RedisSessionManager();
	manager.setSessionIdGenerator(new StandardSessionIdGenerator());
	manager.setContext(context);
	manager.initializeSerializer();
	manager.initializeDatabaseConnection();
	manager.clear();
	
	StandardSession session = manager.createSession(null);
	session.setAttribute("foo", "test");
	
	manager.afterRequest();
	
	StandardSession loaded = manager.findSession(session.getId());
	Assert.assertEquals(session.getAttribute("foo"), loaded.getAttribute("foo"));
	
	Assert.assertEquals(1, manager.getSize());
	Assert.assertArrayEquals(new String[] { session.getId() }, manager.keys());
	
	manager.processExpires();

}
 

import org.apache.catalina.util.StandardSessionIdGenerator; //导入依赖的package包/类
/**
 * Start this component and implement the requirements of
 * {@link org.apache.catalina.util.LifecycleBase#startInternal()}.
 *
 * @exception LifecycleException
 *                if this component detects a fatal error that prevents this
 *                component from being used
 */
@Override
protected synchronized void startInternal() throws LifecycleException {

	// Look up the SingleSignOn implementation in our request processing
	// path, if there is one
	Container parent = context.getParent();
	while ((sso == null) && (parent != null)) {
		Valve valves[] = parent.getPipeline().getValves();
		for (int i = 0; i < valves.length; i++) {
			if (valves[i] instanceof SingleSignOn) {
				sso = (SingleSignOn) valves[i];
				break;
			}
		}
		if (sso == null)
			parent = parent.getParent();
	}
	if (log.isDebugEnabled()) {
		if (sso != null)
			log.debug("Found SingleSignOn Valve at " + sso);
		else
			log.debug("No SingleSignOn Valve is present");
	}

	sessionIdGenerator = new StandardSessionIdGenerator();
	sessionIdGenerator.setSecureRandomAlgorithm(getSecureRandomAlgorithm());
	sessionIdGenerator.setSecureRandomClass(getSecureRandomClass());
	sessionIdGenerator.setSecureRandomProvider(getSecureRandomProvider());

	super.startInternal();
}