Sigar linux系统中 java编程简单实用例子

1.下载Sigar (主要是要获取sigar.jar 和so文件)

wget http://downloads.sourceforge.net/project/sigar/sigar/1.6/hyperic-sigar-1.6.4-src.tar.gz

wget http://downloads.sourceforge.net/project/sigar/sigar/1.6/hyperic-sigar-1.6.4-src.tar.gz

tar zxf hyperic-sigar-1.6.4-src.tar.gz

cd hyperic-sigar-1.6.4-src

cd src

cd bindings

cd java

ant （没有ant时候，先安装ant）

2.拷贝出需要的jar包（sigar.jar）和so文件（libsigar-amd64-linux.so，libsigar-x86-linux.so）

so文件在bindings/Java/sigar-bin/lib中，把libsigar-amd64-linux.so文件放入/usr/lib64/中，需要sudo chmod 744 或 chmod 777 -R 修改libsigar-amd64-linux.so文件权限。(根据自己电脑是32/64位选择)

将jar包导入java工程，这个jar包也在bindings/Java/sigar-bin/lib中。

也可以maven导入：

<!-- https://mvnrepository.com/artifact/org.fusesource/sigar -->
<dependency>
<groupId>org.fusesource</groupId>
<artifactId>sigar</artifactId>
<version>1.6.4</version>
</dependency>

gradle导入：

//https://mvnrepository.com/artifact/org.fusesource/sigar
compile group: 'org.fusesource', name: 'sigar', version: '1.6.4'

3.在java项目中创建工具类(类中用的import有的你可能没有，自己下载或是找其他替换就好)

只获取cpu和内存信息，其他类似，可以自己扩展。

import java.util.Map;

import com.alibaba.fastjson.JSON;
import com.google.api.client.util.Maps;
import org.hyperic.sigar.CpuInfo;
import org.hyperic.sigar.CpuPerc;
import org.hyperic.sigar.Mem;
import org.hyperic.sigar.Sigar;
import org.hyperic.sigar.SigarException;
import org.hyperic.sigar.Swap;

/**
*  <p>Description：</p>
*  <p>Copyright：Copyright (c) 2016</p>
*  <p>Company：//////</p>
*  <p>Email：///////</p>
*
*  @author weijian
*  @date 16-10-25:下午2:04
*
*/
public class SigarUtils {
private static Sigar sigar;
public static Sigar getInstance() {
if (null == sigar) {
sigar = new Sigar();
}
return sigar;
}
/**
* 获取cpu信息返回json
*
* @return String
* @throws SigarException
*/
public static String getCpuInfosListMap() throws SigarException {
Map<String,Object> retMap = Maps.newHashMap();
CpuInfo[] cpuInfos = getInstance().getCpuInfoList();
CpuPerc[] cpuPercs = getInstance().getCpuPercList();
int count = cpuInfos.length;
for (int i = 0; i < count; i++) {
Map<String, Object> cpuMap = Maps.newHashMap();
cpuMap.put("amounts", cpuInfos[i].getMhz());//总量Mhz
cpuMap.put("Vendor", cpuInfos[i].getVendor());//供应商
cpuMap.put("model", cpuInfos[i].getModel());//类型
cpuMap.put("cacheSize", cpuInfos[i].getCacheSize());//缓冲存储器数量
cpuMap.put("user", cpuPercs[i].getUser());//用户使用率
cpuMap.put("sys", cpuPercs[i].getSys());//系统使用率
cpuMap.put("wait", cpuPercs[i].getWait());//当前等待率
cpuMap.put("nice", cpuPercs[i].getNice());//错误率
cpuMap.put("idle", cpuPercs[i].getIdle());//空闲率
cpuMap.put("combined", cpuPercs[i].getCombined());//总使用率
retMap.put("cpu"+ i, cpuMap);
}
return JSON.toJSONString(retMap);
}
/**
* 获取内存信息返回json
*
* @return
* @throws SigarException
*/
public static String getMemoryInfosMap() throws SigarException {
Map<String, Object> retmap = Maps.newHashMap();
Mem mem = getInstance().getMem();
Swap swap = getInstance().getSwap();
retmap.put("Total", mem.getTotal() / 1024L + "K");
retmap.put("Used", mem.getUsed() / 1024L + "K");
retmap.put("Free", mem.getFree() / 1024L + "K");
retmap.put("swapTotal", swap.getTotal() / 1024L + "K");
retmap.put("swapUsed", swap.getUsed() / 1024L + "K");
retmap.put("swapFree", swap.getFree() / 1024L + "K");
return JSON.toJSONString(retma
4000
p);
}
public static void main(String[] args){
try {
System.out.println(SigarUtils.getCpuInfosListMap());
System.out.println(SigarUtils.getMemoryInfosMap());
}  catch (SigarException e) {
}
}
}

运行结果：(json格式，可自己修改)

{
"cpu2":{
"wait":0,
"cacheSize":6144,
"amounts":3700,
"idle":0.2916666666666667,
"model":"Core(TM) i5-4590 CPU @ 3.30GHz",
"Vendor":"Intel",
"combined":0.7083333333333333,
"sys":0.16666666666666666,
"user":0.5416666666666666,
"nice":0
},
"cpu3":{
"wait":0,
"cacheSize":6144,
"amounts":3700,
"idle":0.6326530612244898,
"model":"Core(TM) i5-4590 CPU @ 3.30GHz",
"Vendor":"Intel",
"combined":0.36734693877551017,
"sys":0.08163265306122448,
"user":0.2857142857142857,
"nice":0
},
"cpu0":{
"wait":0,
"cacheSize":6144,
"amounts":3700,
"idle":0.6458333333333334,
"model":"Core(TM) i5-4590 CPU @ 3.30GHz",
"Vendor":"Intel",
"combined":0.3541666666666667,
"sys":0.0625,
"user":0.2916666666666667,
"nice":0
},
"cpu1":{
"wait":0,
"cacheSize":6144,
"amounts":3700,
"idle":0.52,
"model":"Core(TM) i5-4590 CPU @ 3.30GHz",
"Vendor":"Intel",
"combined":0.48000000000000004,
"sys":0.08,
"user":0.4,
"nice":0
}
}
{
"swapFree":"6711980K",
"Used":"7766396K",
"swapUsed":"1554768K",
"Total":"8055600K",
"swapTotal":"8266748K",
"Free":"289204K"
}