基于java的linux线程监控

来源：互联网发布：linux设置ftp目录权限编辑：程序博客网时间：2024/06/06 02:46

在阿里云上弄了个最小的云服务器，512m内存，建了个百度网盘资源站省淘网,tomcat有时会因内存占用过多，被系统回收，暂时没有太好的解决方法，就写了个小程序，监控tomcat线程，如果线程没了，就自动启动，代码如下：

package monitor;import java.io.ByteArrayOutputStream;import org.apache.commons.exec.CommandLine;import org.apache.commons.exec.DefaultExecutor;import org.apache.commons.exec.PumpStreamHandler;public class Monitor {public static void main(String[] args) {try {while (true) {Thread.sleep(10000);String command = "ps -ef";ByteArrayOutputStream errorStream = new ByteArrayOutputStream();CommandLine commandline = CommandLine.parse(command);DefaultExecutor exec = new DefaultExecutor();exec.setExitValue(0);PumpStreamHandler streamHandler = new PumpStreamHandler(errorStream);exec.setStreamHandler(streamHandler);exec.execute(commandline);String result = errorStream.toString("UTF-8");if (result.indexOf("tomcat") < 0) {System.out.println("未找到进程，启动tomcat");command = "./startup.sh";commandline = CommandLine.parse(command);exec.execute(commandline);}}} catch (Exception e) {e.printStackTrace();}}}

需要依赖apache的commons-exec-1.2.jar包

当时对linux系统不熟，才写的这个，现在已经改为用linux crontab的方式了

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