java代码关闭tomcat程序

1.通过java代码实现tomcat的关闭

2.tomcatStop.java

package test;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class tomcatStop {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        System.out.println("访问已超出日访问量");
        String command = "D:\apache-tomcat-8.5.39\bin\shutdown.bat";// 关闭tomcat命令
        try {
            callCommand(command);
        } catch (IOException e) {
            System.out.println("执行命令时出错：" + e.getMessage());
        }
    }

    public static void callCommand(String command) throws IOException {

        Runtime runtime = Runtime.getRuntime();// 返回与当前的Java应用相关的运行时对象
        // 指示Java虚拟机创建一个子进程执行指定的可执行程序，并返回与该子进程对应的Process对象实例
        Process process = runtime.exec(command);
        runtime.gc();// 运行垃圾回收器
        String line = null;
        String content = "";
        BufferedReader br = new BufferedReader(new InputStreamReader(process.getInputStream()));
        while ((line = br.readLine()) != null) {
            content += line + "
";
        }
        System.out.println(content);

    }
}

3.执行关闭命令

4.常见错误

执行代码后可能出现：

The CATALINA_HOME environment variable is not defined correctly

This environment variable is needed to run this program

此时需设置环境变量：

本人设置后运行依然报错，但是将电脑注销一下再次运行即可。