package com.cmmb.util;

import java.io.*;

/**

* linux 下cpu 内存 磁盘 jvm的使用监控

* @author avery_leo

*

*/

public class DiskSpace {

/**

* 获取cpu使用情况

* @return

* @throws Exception

*/

public double getCpuUsage() throws Exception {

double cpuUsed = 0;

Runtime rt = Runtime.getRuntime();

Process p = rt.exec("top -b -n 1");// 调用系统的“top"命令

BufferedReader in = null;

try {

in = new BufferedReader(new InputStreamReader(p.getInputStream()));

String str = null;

String[] strArray = null;

while ((str = in.readLine()) != null) {

int m = 0;

if (str.indexOf(" R ") != -1) {// 只分析正在运行的进程，top进程本身除外 &&

strArray = str.split(" ");

for (String tmp : strArray) {

if (tmp.trim().length() == 0)

continue;

if (++m == 9) {// 第9列为CPU的使用百分比(RedHat

cpuUsed += Double.parseDouble(tmp);

}

}

}

}

} catch (Exception e) {

e.printStackTrace();

} finally {

in.close();

}

return cpuUsed;

}

/**

* 内存监控

* @return

* @throws Exception

*/

public double getMemUsage() throws Exception {

double menUsed = 0;

Runtime rt = Runtime.getRuntime();

Process p = rt.exec("top -b -n 1");// 调用系统的“top"命令

BufferedReader in = null;

try {

in = new BufferedReader(new InputStreamReader(p.getInputStream()));

String str = null;

String[] strArray = null;

while ((str = in.readLine()) != null) {

int m = 0;

if (str.indexOf(" R ") != -1) {// 只分析正在运行的进程，top进程本身除外 &&

//

// System.out.println("------------------3-----------------");

strArray = str.split(" ");

for (String tmp : strArray) {

if (tmp.trim().length() == 0)

continue;

if (++m == 10) {

// 9)--第10列为mem的使用百分比(RedHat 9)

menUsed += Double.parseDouble(tmp);

}

}

}

}

} catch (Exception e) {

e.printStackTrace();

} finally {

in.close();

}

return menUsed;

}

/**

* 获取磁盘空间大小

*

* @return

* @throws Exception

*/

public double getDeskUsage() throws Exception {

double totalHD = 0;

double usedHD = 0;

Runtime rt = Runtime.getRuntime();

Process p = rt.exec("df -hl /home");//df -hl 查看硬盘空间

BufferedReader in = null;

try {

in = new BufferedReader(new InputStreamReader(p.getInputStream()));

String str = null;

String[] strArray = null;

while ((str = in.readLine()) != null) {

int m = 0;

strArray = str.split(" ");

for (String tmp : strArray) {

if (tmp.trim().length() == 0)

continue;

++m;

System.out.println("----tmp----" + tmp);

if (tmp.indexOf("G") != -1) {

if (m == 2) {

System.out.println("---G----" + tmp);

if (!tmp.equals("") && !tmp.equals("0"))

totalHD += Double.parseDouble(tmp

.substring(0, tmp.length() - 1)) * 1024;

}

if (m == 3) {

System.out.println("---G----" + tmp);

if (!tmp.equals("none") && !tmp.equals("0"))

usedHD += Double.parseDouble(tmp.substring(

0, tmp.length() - 1)) * 1024;

}

}

if (tmp.indexOf("M") != -1) {

if (m == 2) {

System.out.println("---M---" + tmp);

if (!tmp.equals("") && !tmp.equals("0"))

totalHD += Double.parseDouble(tmp

.substring(0, tmp.length() - 1));

}

if (m == 3) {

System.out.println("---M---" + tmp);

if (!tmp.equals("none") && !tmp.equals("0"))

usedHD += Double.parseDouble(tmp.substring(

0, tmp.length() - 1));

System.out.println("----3----" + usedHD);

}

}

}

}

} catch (Exception e) {

e.printStackTrace();

} finally {

in.close();

}

//上面写在userd和total写反了，懒得改了，就反着用了

System.out.println("----totalHD----" + usedHD);

System.out.println("----usedHD----" + totalHD);

return (totalHD / usedHD) * 100;

}

public static void main(String[] args) throws Exception {

DiskSpace cpu = new DiskSpace();

System.out.println("---------------cpu used:" + cpu.getCpuUsage() + "%");

System.out.println("---------------mem used:" + cpu.getMemUsage() + "%");

System.out.println("---------------HD used:" + cpu.getDeskUsage() + "%");

System.out.println("------------jvm监控----------------------");

Runtime lRuntime = Runtime.getRuntime();

System.out.println("--------------Free Momery:" + lRuntime.freeMemory()+"K");

System.out.println("--------------Max Momery:" + lRuntime.maxMemory()+"K");

System.out.println("--------------Total Momery:" + lRuntime.totalMemory()+"K");

System.out.println("---------------Available Processors :"

+ lRuntime.availableProcessors());

}

}

import java.io.BufferedReader;

import java.io.InputStreamReader;

public class Linux {

public static Desk getDeskUsage() {

Desk desk = new Desk();

try {

Runtime rt = Runtime.getRuntime();

Process p = rt.exec("df -hl");// df -hl 查看硬盘空间

BufferedReader in = null;

try {

in = new BufferedReader(new InputStreamReader(

p.getInputStream()));

String str = null;

String[] strArray = null;

int line = 0;

while ((str = in.readLine()) != null) {

line++;

if (line != 2) {

continue;

}

int m = 0;

strArray = str.split(" ");

for (String para : strArray) {

if (para.trim().length() == 0)

continue;

++m;

if (para.endsWith("G") || para.endsWith("Gi")) {

// 目前的服务器

if (m == 2) {

desk.setTotal(para);

}

if (m == 3) {

desk.setUsed(para);

}

}

if (para.endsWith("%")) {

if (m == 5) {

desk.setUse_rate(para);

}

}

}

}

} catch (Exception e) {

e.printStackTrace();

} finally {

in.close();

}

} catch (Exception e) {

e.printStackTrace();

}

return desk;

}

public static class Desk {

private String total;

private String used;

private String use_rate;

public String toString(){

return "总磁盘空间："+total+"，已使用："+used+"，使用率达："+use_rate;

}

public String getTotal() {

return total;

}

public void setTotal(String total) {

this.total = total;

}

public String getUsed() {

return used;

}

public void setUsed(String used) {

this.used = used;

}

public String getUse_rate() {

return use_rate;

}

public void setUse_rate(String use_rate) {

this.use_rate = use_rate;

}

}

public static void main(String[] args) {

System.out.println(getDeskUsage());

// 总磁盘空间：234Gi，已使用：100Gi，使用率达：44%

}

}