How to add java startup command to tomcat service

Existing code:

1. Main function: mainGame.java (pickup function for game startup.)

2. Framework running class: gameEnterFrame.java (responsible for loop execution, I Set it to run every 2 seconds and write the number in the database.)

There are two key points about self-starting:

1. You need to modify a configuration file named web.xml

in WEB-INF under webRoot.

If you don't have the same path as my image, unfortunately your project type was created incorrectly.

Remember to create a new web server project.

This file simply adds three lines of code to tell tomcat that I want to run an auto-start class, and I will name it autoRun. As shown below, the blue part is the code I added.

listener-classgame.autoRun/listener-class

/When listener is running, you can execute the autoRun class under the game package (the game package is the game package I created myself, you can create your own favorite package name). This autoRun class is the self-starting code I wrote.

For details, see below:

2. How to write the self-starting code:

We need to let the self-starting code lead to the main function. Therefore, under the game package, create a new file named autoRun.java

packagegame

import javax . servlet . SERVLETContextEvent; //This is the class used for self-starting, server background Event

import javax . servlet . servlet context listener; //This is a class used for self-starting, and the background is the server monitor

import game . main game;//We import the main function , easy to operate

//Declare an autoRun class and use the server background listening interface. Fixed usage, rote memorization

publicclass autorunelementsservletcontextlistener {

//When the background is initialized, the tomcat startup event occurs. This is the fixed usage

public void context initialized(servletcontexteventarg 0){

//What you want to do, write it here

system . out . println(' main functionis running,');

maingame . main(null );

}

//When the background is destroyed, a tomcat shutdown event occurs. This is a fixed usage

public void context destored(servletcontexteventarg 0){

//The execution content is written here

}

}As you can see, there are two parts to monitoring the startup and shutdown status of tomcat.

A beginning. What should I do

another close. What should I do

Of course it is closed. I don't need to take any action yet. I just need to perform the main functions of the game upon launch. So I left the main function in startup.

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