Home > Java > javaTutorial > body text

How to add java startup command to tomcat service

王林
Release: 2023-04-28 12:34:06
forward
1252 people have browsed it

Existing code:

1. Main function: maingame.java (starting function for game startup.)

2. Frame running class: gameenterframe. java (responsible for loop execution, I set it to run every 2 seconds and write data to the database.)

Regarding self-starting, there are two key points:

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

in the web-inf under webroot.

If you don’t have the same path as my picture, unfortunately, it means you created the wrong project type.

Remember to create a new web server project.

Simply add three lines of code to this file to tell tomcat that I want to run an auto-start class. I will name it autorun and that's it. As shown below, the blue part is the code I added.

It’s convenient for everyone to use, just paste it.

<listener> 
<listener-class>game.autorun</listener-class>
</listener>
Copy after login

With this monitoring, you can execute the autorun class under the game package (the game package is a game class package I created myself, you can create the name of the package you like) at runtime. . This autorun class is the self-starting code I wrote.

How to write specifically, see below:

2. How to write the self-starting code:

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

package game;
import javax.servlet.servletcontextevent;//这个是自启动要用到的类,服务器后台事件
import javax.servlet.servletcontextlistener;//这个是自启动要用到的类,服务器后台监听
import game.maingame;//我们把主函数导入进来以便于运行
//声明一个autorun类,使用服务器后台监听接口。固定用法,死记硬背
public class autorun implements servletcontextlistener{
//当后台被初始化,即发生了tomcat启动了事件,固定用法
public void contextinitialized(servletcontextevent arg0){
//你要做的事儿,写在这里
system.out.println("mainfunction is running."); 
maingame.main(null);
}
//当后台被销毁,即发生了tomcat关闭了事件,固定用法
public void contextdestroyed(servletcontextevent arg0){
//执行内容写在这里
}
}
Copy after login

You can see that there are two parts in monitoring tomcat startup and shutdown status,

  • One What do I want to do if it is enabled?

  • The other is what do I want to do if it is closed?

Of course, if it is closed, I don’t need to execute anything yet. action. I just need to execute the main function of the game after startup. So I put the main function in the startup.

The above is the detailed content of How to add java startup command to tomcat service. For more information, please follow other related articles on the PHP Chinese website!

Related labels:
source:yisu.com
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template