使用Sigar在不同操作系统遇到的坑

最近由于工作需要，需要监控服务器的内存和cpu的使用情况，使用Sigar来获取服务器的基础数据，下面是依赖的sigar包

    org.fusesource
    sigar
    1.6.4

 

@RequestMapping(value = "/sigar",method = RequestMethod.GET)
    public String siger() {
        SigerVO vo = new SigerVO();
        try{
            Sigar sigar = new Sigar();
            int ratioCPU = new BigDecimal(sigar.getCpuPerc().getCombined()).setScale(2,BigDecimal.ROUND_HALF_UP).multiply(new BigDecimal("100")).intValue();
            vo.setRatioCPU(ratioCPU);
            Mem mem = sigar.getMem();
            double totalMemory = new BigDecimal(mem.getTotal() / 1024.00 /1024.00 /1024.00).setScale(1, BigDecimal.ROUND_HALF_UP).doubleValue();
            vo.setTotalMemory(totalMemory);

            double useMemory = new BigDecimal(mem.getUsed() / 1024.00 /1024.00 /1024.00).setScale(1, BigDecimal.ROUND_HALF_UP).doubleValue();
            vo.setUseMemory(useMemory);

            double freeMemory = new BigDecimal(mem.getFree() / 1024.00 /1024.00 /1024.00).setScale(1, BigDecimal.ROUND_HALF_UP).doubleValue();
            vo.setFreeMemory(freeMemory);

            int ratioMemory = new BigDecimal(useMemory/totalMemory).setScale(2,BigDecimal.ROUND_HALF_UP).multiply(new BigDecimal("100")).intValue();
            vo.setRatioMemory(ratioMemory);
        }catch (SigarException ex){
            ex.printStackTrace();
        }
        logger.info("【内存与cpu】结果{}",vo.toString());
        return "success";
    }

public class SigerVO {

    /**
     * 当前时间(HH:mm:ss)
     */
    private String nowTime;

    /**
     * cpu利用率
     */
    private Integer ratioCPU;

    /**
     * 当前总内存(G)
     */
    private double totalMemory;
    /**
     * 已使用内存(G)
     */
    private double useMemory;

    /**
     * 剩余内存(G)
     */
    private double freeMemory;

    /**
     * 内存使用率
     */
    private Integer ratioMemory;


    public String getNowTime() {
        return nowTime;
    }

    public void setNowTime(String nowTime) {
        this.nowTime = nowTime;
    }

    public Integer getRatioCPU() {
        return ratioCPU;
    }

    public void setRatioCPU(Integer ratioCPU) {
        this.ratioCPU = ratioCPU;
    }

    public double getTotalMemory() {
        return totalMemory;
    }

    public void setTotalMemory(double totalMemory) {
        this.totalMemory = totalMemory;
    }

    public double getUseMemory() {
        return useMemory;
    }

    public void setUseMemory(double useMemory) {
        this.useMemory = useMemory;
    }

    public double getFreeMemory() {
        return freeMemory;
    }

    public void setFreeMemory(double freeMemory) {
        this.freeMemory = freeMemory;
    }

    public Integer getRatioMemory() {
        return ratioMemory;
    }

    public void setRatioMemory(Integer ratioMemory) {
        this.ratioMemory = ratioMemory;
    }

    @Override
    public String toString() {
        return "SigerVO{" +
                "nowTime='" + nowTime + '\'' +
                ", ratioCPU=" + ratioCPU +
                ", totalMemory=" + totalMemory +
                ", useMemory=" + useMemory +
                ", freeMemory=" + freeMemory +
                ", ratioMemory=" + ratioMemory +
                '}';
    }
}

在调用接口的时候突然报错了，

java.lang.UnsatisfiedLinkError: org.hyperic.sigar.Cpu.gather(Lorg/hyperic/sigar/Sigar;)V
	at org.hyperic.sigar.Cpu.gather(Native Method)
	at org.hyperic.sigar.Cpu.fetch(Cpu.java:30)
	at org.hyperic.sigar.Sigar.getCpu(Sigar.java:320)
	at org.hyperic.sigar.Sigar.getCpuPerc(Sigar.java:341)
	at com.zhy.open.sigar.SigerDemo.siger(SigerDemo.java:32)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205)
	at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:133)
	at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:97)
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827)
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738)
	at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:967)
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:901)
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
	at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:635)
	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:108)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:81)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.springframework.boot.web.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:115)
	at org.springframework.boot.web.support.ErrorPageFilter.access$000(ErrorPageFilter.java:59)
	at org.springframework.boot.web.support.ErrorPageFilter$1.doFilterInternal(ErrorPageFilter.java:90)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	at org.springframework.boot.web.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:108)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:496)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1468)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:748)

之后各种找博客帖子，里面各种说法，经过实践，找到了问题的处理方法，

首先在不同的操作系统中需要不同的依赖文件

文件的下载地址可以去

sigar包的相关文件.zip

里面文件的目录是这样的

如果是windows系统，那么需要

sigar-amd64-winnt.dll(64位的)或者是sigar-x86-winnt.dll（32位系统的）

如果是linux系统，需要

libsigar-amd64-linux.so（64位系统的）或者libsigar-x86-linux.so（32位系统的）

放的路径就需要根据一个小小的程序来判断了

@RequestMapping(value = "/test",method = RequestMethod.GET)
    public String test(){
        String property = System.getProperty("java.library.path");
        logger.info("【java.library.path路径】{}",property);
        return property;
    }

在我linux系统输出的是：/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib

所以我们只需要放入其中一个文件夹里面就行，我这里放的是/usr/lib64目录下面，亲测正常使用，下面是查询出来的结果

【内存与cpu】结果SigerVO{nowTime='null', ratioCPU=2, totalMemory=1.8, useMemory=1.2, freeMemory=0.6, ratioMemory=67}

总结：sigar的依赖放置位置是根据 Sysytem.getProperty("java.library.path")获取的路径来确定的，有问题记录一下，激励自己，帮助他人，欢迎关注微信公总号"干活集市"，里面有海量整套视频教学的资源，总有一款适合你。