java jar包独立运行_java独立进程启动jar-优快云博客

本文链接：https://blog.youkuaiyun.com/chc183/article/details/129736275

该文章描述了一个使用Java实现的监控exe程序的系统，当QQMusic.exe进程不存在时能自动重启。通过Eclipse导出jar包，配合批处理脚本和VBScript实现开机启动。程序使用ScheduledExecutorService定时检查进程是否存在，如果不存在则重新启动。

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eclipse项目上右键export->jar file->下一步选择启动类入口->导出jar包成功

将jar包和对应的编译版本的jre复制出来放在同一目录

新建文本文件，重命名为批处理文件xxx.bat

xxx.bat代码：

@echo off
start jre/bin/javaw -jar xxx.jar

新建xxxxx.vbs文件，并选择放入开机启动项

set ws = wscript.createobject("wscript.shell")
ws.run "cmd /c xxx.bat",vbhide

demo:

package com.ejt;

import java.io.BufferedReader;
import java.io.File;
import java.io.InputStreamReader;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
import java.util.logging.Logger;
/**
 * 监控exe程序 实现程序挂掉并重启
 * @author 18362
 */
public class Monitor{
    public static void main(String[] args) {
        new Thread(new MonitorRun()).start();
    }
}
class MonitorRun implements Runnable{
    public final Logger log = Logger.getLogger("Monitor");
    public final String EXE_NAME = "QQMusic.exe";  
    public final String EXE_PATH = "D:\\soft\\Tencent\\QQMusic\\";//exe存放路径
    public final String EXE_FULL_PATH = EXE_PATH+EXE_NAME;//exe存放路径
    @Override
    public void run() {
        ScheduledExecutorService executor = Executors.newSingleThreadScheduledExecutor();
        executor.scheduleAtFixedRate(this::checkExeExist, 0, 10, TimeUnit.SECONDS);
    }
    /**
     * 启动exe程序
     */
    private void startExe() {
        File file = new File(EXE_FULL_PATH);
        if (file.exists()) {
            Runtime runtime = null;
            try {
                runtime = Runtime.getRuntime();
                //启动exe执行程序
                runtime.exec("cmd /c start "+EXE_FULL_PATH);//启动应用
                System.out.println("程序启动成功");
            } catch (Exception e) {
                log.info("程序启动异常："+e.getMessage());
                e.printStackTrace();
            }finally{
                runtime.gc();
            }
        }else{
            log.info("程序不存在");
        }
    }
    /**
     * 关闭exe程序
     */
//    private void closeExe() {
//        try {
//            Runtime runtime = Runtime.getRuntime();
//            runtime.exec("taskkill /F /IM " + EXE_NAME );//停止应用
//            log.info("程序关闭成功");
//        } catch (Exception e) {
//            log.info("程序关闭异常："+e.getMessage());
//        }
//    }
    
    /**
     * //检测exe服务是否存在
     * @return
     */
    private boolean checkExeExist() {
        //判断是否存在进程
        boolean isExist = false;
        BufferedReader bufferedReader = null;
        try {
            Process proc = Runtime.getRuntime().exec("tasklist /fi " + '"' + "imagename eq " + EXE_NAME +'"');
            bufferedReader = new BufferedReader(new InputStreamReader(proc.getInputStream()));
            String line = null;
            while ((line = bufferedReader.readLine()) != null) {
                if (line.contains(EXE_NAME)) {
                    isExist = true;//存在
                    break;
                }
            }
            log.info("状态："+(isExist?"存在":"不存在"));
            if(!isExist) {//不存在 则先关闭再启动
//                closeExe();//先关闭会启动失败？
                startExe();
            }
        } catch (Exception ex) {
            log.info("查询程序进程异常："+ex.getMessage());
            return isExist;
        } finally {
            if (bufferedReader != null) {
                try {
                    bufferedReader.close();
                } catch (Exception ex) {}
            }
        }
        return isExist;
    }
}