tomcat初始化做了什么
最近没事，看了下tomcat源码，tomcat启动的时候做了些什么?org\apache\catalina\startup\Bootstrap.java 发现这个类有个main访问，启动的时候调用这个类。
我想应用启动的时候应该是后台启动一个线程在跑。
public void init()
throws Exception
{
// Set Catalina path
setCatalinaHome();
setCatalinaBase();
initClassLoaders();
Thread.currentThread().setContextClassLoader(catalinaLoader);
SecurityClassLoad.securityClassLoad(catalinaLoader);
// Load our startup class and call its process() method
if (log.isDebugEnabled())
log.debug("Loading startup class");
Class startupClass =
catalinaLoader.loadClass
("org.apache.catalina.startup.Catalina");
Object startupInstance = startupClass.newInstance();
// Set the shared extensions class loader
if (log.isDebugEnabled())
log.debug("Setting startup class properties");
String methodName = "setParentClassLoader";
Class paramTypes[] = new Class;
paramTypes = Class.forName("java.lang.ClassLoader");
Object paramValues[] = new Object;
paramValues = sharedLoader;
Method method =
startupInstance.getClass().getMethod(methodName, paramTypes);
method.invoke(startupInstance, paramValues);
catalinaDaemon = startupInstance;
}
主要的初始化都在这个类了。
public final class SecurityClassLoad {
public static void securityClassLoad(ClassLoader loader)
throws Exception {
if( System.getSecurityManager() == null ){
return;
}
loadCorePackage(loader);
loadLoaderPackage(loader);
loadServletsPackage(loader);
loadSessionPackage(loader);
loadUtilPackage(loader);
loadJavaxPackage(loader);
loadCoyotePackage(loader);
loadHttp11Package(loader);
loadTomcatPackage(loader);
}
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