怎么用java代码读取linux主机的磁盘使用信息，同时截取出文件系统和已使用情况放在map中可以得到keyvalu

文件系统容量已用可用已用%挂载点/dev/sda855G4.6G47G9%/udev367M4.0K367M1%/devtmpfs150M848K149M1%/runno... 文件系统容量已用可用已用% 挂载点
/dev/sda8 55G 4.6G 47G 9% /
udev 367M 4.0K 367M 1% /dev
tmpfs 150M 848K 149M 1% /run
none 5.0M 0 5.0M 0% /run/lock
none 375M 624K 374M 1% /run/shm
none 100M 40K 100M 1% /run/user 展开

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#热议# 普通体检能查出癌症吗？

山水阿锐
2015-07-10 · TA获得超过34.3万个赞

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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());
}
}

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圣鸾OJ
推荐于2016-02-04 · TA获得超过1629个赞

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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());
}
}

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龙城一木
推荐于2016-12-03

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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());   
    } 
}


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