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1 下载 curl -O https://alibaba.github.io/arthas/arthas-boot.jar java -jar arthas-boot.jar dashboard 2 dashboard 命令 上面是先通过观察总体的线程信息，然后查看具体的线程运行情况。如果只是为了寻找 CPU 使用较高的线程，可以直接使用命令 thread -n [显示的线程个数...

StandardWrapperValveThe StandardWrapperValve class is the basic valve in a StandardWrapper instance.This valve does two thinds:1 Executes all filters associated with the servlet 2 Calls the sender's se

Support for ReloadingThe StandardContext class defines the reloadable property to indicate whether reloading of the application is enabled. When reloading is enabled, the application will be reloaded

参见： http://blog.youkuaiyun.com/qfzhangwei/article/details/53731206

The backgroundProcess MethodA context needs the help of other components, such as a loader and a manager. Often these components require a separate thread that handles background processing. For in

Server and ServiceOverview In previous chapters you have seen how you can have a servlet container by instantiating a connector and container and then associating them with each other. Only one conne

Container and ConnectorsA StandardService instance contains two types of components: a container and one or more connectors. Being able to have multiple connectors enable Tomcat to service multiple pro

Engine InterfaceThe org.apache.catalina.Engine interface represents an engine. An engine represents the entire Catalina servlet engine. You would want to use an engine if you want to support multip

图1 DispatchServlet 继承关系 图2一次http请求经过的处理类 tomcat ---coyote---catalina---springframework 图3 一次http请求经过的处理类 tomcat ---coyote---catalina---springframework 图4 catalina 中经过的Filter 调用链 Applicatio...

The loadServlet method of the StandardWrapper class calls the sender’s init method after the servlet is loaded. The init method is passed an instance of javax.servlet.ServletConfig. You may be wonderi

StandardService + Lifecycle(start/stop)+initializeThe lifecycle methods are the start and the stop methods inherited from the Lifecycle interface plus the initialize method.//initialize method calls th

SimplePipelineIn addition to the Pipeline interface, the SimplePipeline class implements the Lifecycle interface. The methods from the Lifecycle interface are left blank but now an instance of this cla

tomcat中的 设计模式–代理模式 Lifecycle接口 提供生命周期管理，并使用了LifecycleSupport接口，来实现对事件的发送，发送给其他组件容器。

The WebappLoader ClassThe org.apache.catalina.loader.WebappLoader class is the implementation of the Loader interface and represents a web application loader responsible for loading classes for a web a

The WebappClassLoader ClassThe org.apache.catalina.loader.WebappClassLoader class represents the class loader reponsible for loading the classes used in a web application. WebappClassLoader extends

Tomcat’s default connector and our connector use the SocketInputStream class for reading byte streams from the socket’s InputStream. An instance of SocketInputStream wraps the java.io.InputStream insta

The Simple Container ApplicationThe main purpose of the application in this chapter is show how to use the default connector. It consists of two classes:The SimpleContainer class implements org.apache.

The Manager Interface The Manager interface represents a Manager component. public interface Manager{ public Container getContainer(); public void setContainer(Container container

StandardContext (tomcat 4 and 5)历史 A context represents a web application and contains one or more wrappers, each of which represents a servlet definition. However, a context requires other components

Loading the ServletThe StandardWrapper class implements the load method of the Wrapper interface. The load method calls the loadServlet method that loads the servlet and calls its init me

I will develop my own servlet container by presenting two applications. The first application has been designed to be as simple as possible to make it easy for you to understand how a servlet containe