What is a war file and how to open it

The war file is a web application format that contains a collection of all source codes in a project and is organized according to a certain directory structure. Since all files are merged into one file, file transfer time is saved. You can open it in the webapps directory under Tomcat and run it

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war file

war is a web application format that contains all the content in the web application. All content in this file will be organized according to a certain directory structure. Generally, the war file contains html, jsp files or directories containing these two files. In addition, it also contains a web-inf directory, which stores the application configuration file web.xml and the classes directory. The classes directory contains compiled Servlet classes and other classes that Jsp or Servlet depends on. Since the war file merges all the files into one, it reduces the file transfer time

Why is the war file needed

War A package is a collection of all source codes under a website project during web development. It contains the code for the front-end page HTML/CSS/JS/JSP, etc., as well as the code for compiling Java. After developers debug all the code in their own development environment and pass it, they package it and send it to testers for testing. Testers can directly place it in the webapps or word directory under Tomcat. As the tomcat server starts, it can be automatically decompressed and then run.

How to open a war file and run it

We can deploy the file to Tomcat, unzip it and run it in the browser

(1) Open the Tomcat installation path and enter the webapps folder

(2) Place the packaged demo.war file into the webapps folder

(3 ) Start Tomcat, enter "http:localhost:8080/demo" in the browser to open the index.jsp page in the demo project in the browser

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