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Objective: In this article, I want to understand connector. getContainer (). invoke (request, response); how does one pass the invoke of the container to servlet or jsp?StandardEngine does not have the invoke method. It inherits from ContainerBase (in fact, all containers are inherited from ContainerBase and there are some common methods and attributes of containers in the ContainerBase class). The invoke method of the abstract class ContainerBase is as follows:[Java]Protected Pipeline pipeline
Nested componentsThese components are specific implementations for Tocmat, whose primary purpose is to enable the various Tomcat containers to do their work.1. Valves (Valve)Valve is a processing element that can be included in the processing path of each Tomcat container-such as engine, host, context, and servelt wrappers. To add Valve to the Tomcat container yo
Container findchild (String name); Public container[] Findchildren (); A container can also have other components, such as Loader,logger,manager, Realm, and resources, which will be discussed in a later section. What's more interesting is that the Container interface is designed to be a pattern that TOMCAT administrators can use Server.xml file configuration to determine how it works by using a pipeline (pipelining) and a series of valves that will be in the next section discussed in Pipelin
introduced into the pipeline pipeline ④ for the assembly line with the valve ⑤ Connectors and Containers on Why is Tomcat designed this way, the master design is certainly justified, and I can only find life examples to convince myself that this is really good. The client's request is like a bottle of muddy water, which has everything, this bottle of water needs to be processed. Finally get pure water, the connector is like a transporter, always on s
Operating principle of Transistor Transistor PrincipleTo understand the effect of transistor amplification, remember that energy will not be generated for no reason, so the transistor will not produce energy ,. However, the most amazing thing about the transistor is that it can control large current through small current. The principle of amplification is that large static DC is controlled through small AC input. Suppose the transistor is a dam. The strange thing about the dam is that there are
hardware design2.1 ECU structure compositionThe ABS system consists of three parts: wheel speed sensor, electronic controller (ECU), and solenoid valve. The core part of the system is ECU, which consists of two parts: system power management, wheel speed signal processing, processor (Single Chip Microcomputer), solenoid valve driver and ABS Fault Detection. WheelThe speed signal processing module changes
; 4. Org.apache.catalina. ContainerListener Container event Listener, note that start,stop is a normal life cycle event (liftcycleevent) is not a container event. Main methods: Handling Container Events public void ContainerEvent (ContainerEvent event); 5. Org.apache.catalina. Pipeline Pipleline is a collection of valve that, when invoked, invokes the valve
; public class Simplepipeline implements Pipeline {public simplepipeline (Container Container) {Setcontainer (Container) ; }//The basic Valve (if any) associated with this Pipeline. protected Valve basic = null; The Container with which this Pipeline is associated. protected Container Container = null; The array of valves protected Valve valves[] = new
conditions:(1) General monitoring contents of chilled water pump, cooling water pump and cooling tower fan:Monitor operation status, fault status and manual/automatic form, cumulative run time, count of running times, and BAS can start and stop control of these devices.(2) Variable frequency speed control of chilled water pump:The pressure difference between the supply and return mains is monitored, and the pressure difference is used as the process variable to control the frequency conversion
Responsibility chain mode: The chain of responsibility model can be used in such a scenario, when a request comes over, it is necessary to do a series of processing of this request, the use of the chain of responsibility model can make each processing components, reduce coupling. can also be used when a request comes in, you need to find the right processing method. When a process is not suitable for this request, it is passed to the next processing method, which attempts to process the request
Tomcat source code analysis (startup Framework) Preface: This article is some of my experiences after reading the Tomcat source code. It mainly explains the Tomcat System Framework and startup process. If you have any mistakes, please criticize them! Suggestion: After all, the Tomcat framework is still complicated. It is not easy to grasp the Tomcat framework simply by understanding the text. Therefore, you must practice, practice, and practice again. We recommend that you download the Tomca
The understanding of the amplification of the transistor, remember one thing: energy does not produce for no reason, so the transistor must not produce energy. But what makes the transistor so powerful is that it can control large currents by small currents. The principle of amplification is that the large static DC is controlled by a small AC input. Assuming the transistor is a dam, the strange part of the dam is that there are two valves, a large valve
From: http://blog.csdn.net/hoope/archive/2008/11/09/3262644.aspx Transistor Principle Understanding the function of transistor release remember: energy is the reason for the production of the triode production energy Power-on Current Control Working principle: Controls static DC through AC Input Let us assume that the double transistor dam is strange. Two Valves, valves, valves, and valves, can be applied to the valve by gravity. The work flow will be
Humble Indie Bundle launched the Linux version at the time of release, and all the versions after this game had a Linux version (and Linux users spent a lot of Money). At the same time, services such as Desura and Ubuntu software Center have emerged, giving Linux gamers access to a few stores that are friendly and can buy and manage Linux games.However, the real platform for Linux users to enjoy close to 1000 professional, commercial masterpiece, from Valve's hands. "At the end of 2013,
seems that when we use a pressure cooker in the future, we can't be careless. So what is the correct way to use the pressure cooker? Food and water cannot be too full, preferably less than 2/3; When stamped, the upper and lower three alignment, spin into the tank, until the upper and lower handles alignment, after the fire, when the steam steadily emerges from the exhaust pipe, the pressure limiting valve can be promptly deducted. The pressure limi
because we were nearing the National Day. The condition in the ward is good. It is clean and tidy. There are 3 beds, toilets and hot water, air conditioners and drinking water. The price is also affordable. 60 yuan is spent one night with one person, 10 yuan a night. When I went to the ward, I had already had two patients, one of whom was similar to my mother. I was 60 years old. I changed my mitral valve for a week and it looked good. However, her i
important to note that there are many methods and properties in the class, which are limited to the length of the list.EnigneThe engine is the topmost container, which is a combination of the host container. Its standard implementation class is: Java code org.apache.catalina.core.StandardEngine Take a look at the main logical unit concept diagram for Standardengine. As you can see from the diagram, the engine has four components: Cluster: The ability to implement Tomcat clusters, such as se
parameter detection is about 60 points). The distribution of points in the station monitoring system is as follows: (1) Tunnel Ventilation System: the BAS system monitors and controls four tunnel fans, linkage air valves, two thrust fans and combination air valves, and monitors fan overload fault alarm signals, detects the temperature and humidity of the tunnels at both ends. The total points are do 20, di 28, and AI 8. (2) station Datong Air Conditioning System: the BAS system monitors and con
Tags: Tomcat Reading Notes Valve Components Chapter 5 servlet container chapter 5th discusses the container module. Container refers to the org. Apache. Catalina. Container interface, which has four types: Engine, host, context, and wrapper. This chapter provides two programs that work on context and wrapper. Containers are divided into four categories. The class diagram is as follows: A wrapper is a servlet; A context contains several wrapper; This
serversocketaccept () blocking, essentially calling Serversocketchannel.accept () Acceptor adds the received socket to a poller in the Poller pool poller the socket into a socketprocessor socketprocessor call GetHandler () through the worker thread Get the corresponding Connectionhandler Connectionhandler the socket to http11processor processing, parse HTTP header and body Http11processor call service () The packaged request and response passed to Coyoteadapter Coyoteadapter will be sent throug
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