java windows 进程监控 java监控进程是否死掉

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码海舵手之心 2023-07-17 23:35:39

文章标签 java windows 进程监控 cpu java jar tomcat 文章分类 Java 后端开发

java 监控linux服务器cpu、内存、java进程是否存活，发现异常发送邮件提醒

前一段时间在维护一个N年前的项目，这个项目有十几个服务器，每个服务器上有十几个服务。接手后的几个星期天天有事，要不就是服务挂了导致没有数据，要不就是把服务器跑宕机了。因为是老项目，所以不敢有大的动作，只能写一个简单的检测程序，检测一下服务器状态，cpu使用率，磁盘使用率，进程是否存在。程序不复杂，但是解放了自己。现在把这个小工具整理一下分享出来，希望可以帮到有需要的人。
我使用的是qq的发送邮箱，首先要开启QQ邮箱需获取相应的权限，
开启位置：QQ邮箱–>邮箱设置–>账户–>POP3/IMAP/SMTP/Exchange/CardDAV/CalDAV服务开启POP3/SMTP服务，然后获取16位授权码（注意不要将授权码泄露，一个账户可以拥有多个授权码)
话不多说直接上代码

package com.yyq;

import java.util.Properties;
import javax.mail.Authenticator;
import javax.mail.Message;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

/**
 * 
 * @author 杨永琪
 * @date 2021年8月16日
 */
public class CheckJava {

	/**
	 * 邮箱
	 */
	public static final String EMAIL = "XXXXXXX@qq.com";
	/**
	 * 密码
	 */
	public static final String EMAIL_PWD = "XXXXXXX";
	/**
	 * 接受邮件的邮箱
	 */
	public static final String RECIPIENT = "XXXXXXX@qq.com";
	
	public static void main(String[] args) {
		String jarName = "res_compare.jar";
		//查看程序进程号
		String process = checkJava(jarName);
		//查看磁盘使用率
		checkDisk();
		//查看总进程使用数量
		checkPid();
		if(null == process){
			return;
		}
		//查看进程cpu使用率
		checkCPU(process);
		//查看进程内存使用率
		checkMEM(process);
	}
	
	/**
	 * 检查指定的java进程是否存在 
	 * @param jarName  jar包名称
	 * @return 进程号
	 */
	public static String checkJava(String jarName){
		String checkJavaCmd =String.format("ps -ef | grep %s | grep -v grep | awk '{print $2}'|xargs",jarName);
		String result = MyRuntimeExec.exec(checkJavaCmd);
		System.out.println("当前程序 "+jarName+" 进程号是："+result);
		if(null == result || "".equals(result) || " ".equals(result)){
			sendMail(EMAIL, EMAIL_PWD, RECIPIENT, jarName+"服务挂了",String.format("主人,您的服务挂啦(%s),赶快处理呀!",jarName));
			return null;
		}
		return result.trim();
	}
	
	/**
	 * 检查 cpu是否超过阈值
	 * @param process  进程号
	 */
	public static void checkCPU(String process){
		int cpuMax = 350;//cpu阈值
		String cpuCmd = String.format("top -b -n 1 | grep %s | awk '{print int($9)}'",process);
		String cpuResult = MyRuntimeExec.exec(cpuCmd);
		cpuResult = cpuResult.trim();
		Integer cpu = Integer.valueOf(cpuResult);
		System.out.println("当前程序 "+process+" cpu使用率是："+cpu);
		if(cpu > cpuMax){
			sendMail(EMAIL, EMAIL_PWD, RECIPIENT, "cpu超过阈值了",String.format("主人,您的服务cpu爆表啦(%s)现在cpu是:%s,赶快处理呀!",process,cpuResult));
		}
	}
	/**
	 * 检查 内存是否超过阈值
	 * @param process  进程号
	 */
	public static void checkMEM(String process){
		int memMax = 50;//内存阈值
		String memCmd = String.format("top -b -n 1 | grep %s | awk '{print int($10)}'",process);
		String memResult = MyRuntimeExec.exec(memCmd);
		memResult = memResult.trim();
		Integer mem = Integer.valueOf(memResult);
		System.out.println("当前程序 "+process+" 内存使用率是："+mem);
		if(mem > memMax){
			sendMail(EMAIL, EMAIL_PWD, RECIPIENT, "内存超过阈值了",String.format("主人,您的服务内存爆表啦(%s)现在内存是:%s,赶快处理呀!",process,memResult));
		}
	}
	/**
	 * 检查linux 磁盘空间是否超过阈值
	 */
	public static void checkDisk(){
		int diskMax = 90;//磁盘使用阈值(百分比)
		String diskCmd = "df -h|head -2| awk '{print int($5)}'|xargs";
		String diskResult = MyRuntimeExec.exec(diskCmd);
		String useageStr = diskResult.split(" ")[1];
		Integer usage = Integer.valueOf(useageStr.trim());
		System.out.println("当前系统磁盘使用率是："+usage);
		if(usage > diskMax){
			sendMail(EMAIL, EMAIL_PWD, RECIPIENT, "磁盘超过阈值了",String.format("主人,您的磁盘快使用完啦,现在使用率是:%s,赶快处理呀!",useageStr));
		}
	}
	
	/**
	 * 检查linux进程数量是否超过阈值
	 */
	public static void checkPid(){
		
		int pidMax = 5000;//进程数量阈值
		String pidCmd = "pstree -p|wc -l";
		String pidResult = MyRuntimeExec.exec(pidCmd);
		Integer pids = Integer.valueOf(pidResult.trim());
		System.out.println("当前系统进程使用数量是："+pids);
		if(pids > pidMax){
			sendMail(EMAIL, EMAIL_PWD, RECIPIENT, "进程数超过阈值了",String.format("主人,您的进程数超过阈值啦,现在是:%s,赶快处理呀!",pidResult));
		}
	}
	
	
	
	
	
	/**
	 * 
	 * @param sender  		寄件人
	 * @param senderPwd  	寄件人密码
	 * @param recipient  	收件人
	 * @param text  		内容
	 * @param title			标题
	 * @return
	 */
	public static boolean sendMail(String sender, String senderPwd, String recipient, String text, String title) {
		try {
			final Properties props = new Properties();
			props.put("mail.smtp.auth", "true");
			props.put("mail.smtp.host", "smtp.qq.com");

			// 发件人的账号
			props.put("mail.user", sender);
			// 发件人的密码
			props.put("mail.password", senderPwd);

			// 构建授权信息，用于进行SMTP进行身份验证
			Authenticator authenticator = new Authenticator() {
				@Override
				protected PasswordAuthentication getPasswordAuthentication() {
					// 用户名、密码
					String userName = props.getProperty("mail.user");
					String password = props.getProperty("mail.password");
					return new PasswordAuthentication(userName, password);
				}
			};
			// 使用环境属性和授权信息，创建邮件会话
			Session mailSession = Session.getInstance(props, authenticator);
			// 创建邮件消息
			MimeMessage message = new MimeMessage(mailSession);
			// 设置发件人
			String username = props.getProperty("mail.user");
			InternetAddress form = new InternetAddress(username);
			message.setFrom(form);

			// 设置收件人
			InternetAddress toAddress = new InternetAddress(recipient);
			message.setRecipient(Message.RecipientType.TO, toAddress);

			// 设置邮件标题
			message.setSubject(title);

			// 设置邮件的内容体
			message.setContent(text, "text/html;charset=UTF-8");
			// 发送邮件
			Transport.send(message);
			
			System.out.println("给" + recipient + "发送邮件成功");
			return true;
		} catch (Exception e) {
			System.out.println("给" + recipient + "发送邮件失败,错误：" + e.getMessage());
			e.printStackTrace();
		}
		return false;
	}
	
}

执行linux命令并解析的工具类

package com.yyq;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;

/**
 * 
 * @author 杨永琪
 * @date 2021年5月9日
 */
public class MyRuntimeExec {

	private static String DEFAULTCHART = "UTF-8";
	
	public static String exec(String cm){
		String os = System.getProperty("os.name").toLowerCase();
		Process ps = null;
		InputStream er = null;
		InputStream is = null;
		String result = null;
		try {
			if(os.contains("win")){
				String[] cmd = { "cmd", "/c", cm };
				ps = Runtime.getRuntime().exec(cmd);
			}else if (os.contains("linux")){
				if(cm.contains("rm ")){
					System.err.println("不能执行危险命令"+cm);
					return result;
				}
				if(cm.contains("mv ")){
					System.err.println("不能执行危险命令"+cm);
					return result;
				}
				String[] cmd = { "/bin/sh", "-c", cm };
				ps = Runtime.getRuntime().exec(cmd);
			}
			is = ps.getInputStream();
			result = getInString(is);
//			System.err.println("执行命令："+cm+" 执行结果--<"+result+" >--");
		} catch (Exception e) {
			System.err.println(e.getMessage());
		} finally {
			try {
				if (null != ps)
					ps.waitFor();
				if (null != is)
					is.close();
				if (null != er)
					er.close();
				if (null != ps)
					ps.destroy();
			} catch (Exception e) {
				System.err.println(e.getMessage());
				e.printStackTrace();
			}
		}
		return result;
	}
	public static String execEnter(String cm){
		String os = System.getProperty("os.name").toLowerCase();
		Process ps = null;
		InputStream er = null;
		InputStream is = null;
		String result = null;
		try {
			if(os.contains("win")){
				String[] cmd = { "cmd", "/c", cm };
				ps = Runtime.getRuntime().exec(cmd);
			}else if (os.contains("linux")){
				String[] cmd = { "/bin/sh", "-c", cm };
				ps = Runtime.getRuntime().exec(cmd);
			}
			is = ps.getInputStream();
			result = getInStringEnter(is);
			System.err.println("执行命令："+cm+" 执行结果--<"+result+" >--");
		} catch (Exception e) {
			System.err.println(e.getMessage());
		} finally {
			try {
				if (null != ps)
					ps.waitFor();
				if (null != is)
					is.close();
				if (null != er)
					er.close();
				if (null != ps)
					ps.destroy();
			} catch (Exception e) {
				System.err.println(e.getMessage());
				e.printStackTrace();
			}
		}
		return result;
	}

	public static String getInString(InputStream is) throws Exception{
		StringBuffer result = new StringBuffer();
		BufferedReader reader = new BufferedReader(new InputStreamReader(is,DEFAULTCHART));
		String line;
		while ((line = reader.readLine()) != null) {
			result.append(line + " ");
		}
		return result.toString();
	}
	public static String getInStringEnter(InputStream is) throws Exception{
		StringBuffer result = new StringBuffer();
		BufferedReader reader = new BufferedReader(new InputStreamReader(is,DEFAULTCHART));
		String line;
		while ((line = reader.readLine()) != null) {
			result.append(line + "\n");
		}
		return result.toString();
	}
}

效果

java windows 进程监控 java监控进程是否死掉_tomcat

用到的jar包
javax.mail-api-1.5.5.jar
javax.mail-1.5.5.jar

maven依赖

<dependency>
    <groupId>javax.mail</groupId>
    <artifactId>javax.mail-api</artifactId>
    <version>1.5.5</version>
</dependency>
<dependency>
    <groupId>com.sun.mail</groupId>
    <artifactId>javax.mail</artifactId>
    <version>1.5.5</version>
</dependency>

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