Programmer Think

1, What is a filter 1. Filter is one of the three major components of Java Web. The three components are: Servlet program, Listener listener and filter filter 2. Filter is a Java EE specification. That is, the interface. 3. The function of Filter is to intercept requests and Filter responses. Common application scenarios: 1. Permission che ...

Code reference: 200 lines of JS code to implement lambda interpreter PP boss code Interpreter construction A lambda interpreter is mainly composed of the following aspects: Lexer: decomposes character stream into token streamParser: build an abstract syntax tree AST by using the symbol stream according to the syntaxSyntax Interpreter / syn ...

1. Start process of Container stay Tomcat source code analysis (1) - structure composition and core components In, the author analyzes the general composition of Tomcat. The Container container is a core component strongly related to the upper business logic, and is divided into four levels. During the startup of tomcat, the startup proces ...

1.Servlet life cycle Servlet has no main() method and cannot run independently. Its operation is completely controlled and scheduled by servlet engine. The so-called life cycle refers to the whole process of when the servlet container creates a servlet instance, when it calls its methods to process requests, and when it and destroys its instan ...

This paper mainly records how to build a system running environment under Linux environment, mainly using redis, nacos, tomcat, JDK and nginx Tip: the following is the main content of this article. The following cases can be used for reference preface Download the compressed package first Link: https://pan.baidu.com/s/1a3y3sKzP0fTddD ...

Spring Boot internally starts an embedded Web container. Tomcat is a component-based design, so it is to start these components. The Tomcat independent deployment mode is started through the startup script. The Bootstrap and Catalina in Tomcat are responsible for initializing the class loader and parsing the server XML and start these compo ...

I brief introduction In fact, I didn't want to write this, but after the domain name was filed yesterday, I configured https for a long time. It's really urgent. There are so many cheating tutorials on csdn. I've taken a lot of detours. While I still remember now, I'll record it. It may also be used later. After writing this article, I'll be r ...

Main knowledge points The servlet API gets the request parameters using request getParameter("xxx")In spring MVC, you only need to declare the parameter with the corresponding name in the processing method to automatically match the parameter passed in by the request and perform the corresponding type conversion (the servlet API also ...

summary Do you know how Tomcat loads Spring and Spring MVC? Today we'll figure out the process (record the most critical things) It will involve large and small knowledge, including design patterns during loading, Servlet knowledge, etc. you must gain something after rea ...

catalogue preface install Tomcat analysis Main documents Upload directory Tomcat penetration Tomcat arbitrary file write (CVE-2017-12615) Tomcat remote code execution (CVE-2019-0232) Tomcat weak password & background getshell vulnerability Tomcat manager App brute force cracking Tomcat AJP file contains vulnerability analysis (CV ...