tomcat jsp 打印 sigar

末蓝、 2022-05-04 14:28 170阅读 0赞

<%@page session="false" contentType="text/html; charset=ISO-8859-1" %>
    <%@page import="org.hyperic.sigar.*" %>
    <%@page import="java.io.PrintWriter" %>
    <%@page import="java.net.InetAddress" %>
    <%@page import="java.net.UnknownHostException" %>
    <%@page import="java.util.Map" %>
    <%@page import="java.util.Properties" %>
    <%
    		Sigar sigar = new Sigar();
    		// cpu 使用率
    		CpuPerc cpuList[] = null;
            cpuList = sigar.getCpuPercList();
            double combined = 0.0;
            for (int i = 0; i < cpuList.length; i++) {
                combined += cpuList[i].getCombined();
            }
            combined = combined / cpuList.length;
    		String p = String.valueOf(combined * 100.0D);
            int ix = p.indexOf(".") + 1;
            String cpu = p.substring(0, ix) + p.substring(ix, ix + 1);
    		 // 当前内存使用量
    		Mem mem = sigar.getMem();
            long memory = mem.getUsed()*100/mem.getTotal();
    		// jvm当前使用率
    		Runtime r = Runtime.getRuntime();
    		long jvm = r.freeMemory()*100/r.totalMemory();
    		// 磁盘使用率
    		long total = 0;
            long totalFree = 0;
            long totalPercent = 0;
            FileSystem fslist[] = sigar.getFileSystemList();
            for (int i = 0; i < fslist.length; i++) {
                FileSystem fs = fslist[i];
                FileSystemUsage usage = null;
                usage = sigar.getFileSystemUsage(fs.getDirName());
                switch (fs.getType()) {
                    case 0: // TYPE_UNKNOWN ：未知
                        break;
                    case 1: // TYPE_NONE
                        break;
                    case 2: // TYPE_LOCAL_DISK : 本地硬盘
                        // 文件系统总大小
                        total += usage.getTotal();
                        // 文件系统剩余大小
                        totalFree += usage.getFree();
                        // 文件系统可用大小
                        // 文件系统已经使用量
                        double usePercent = usage.getUsePercent() * 100D;
                        // 文件系统资源的利用率
                        totalPercent += usePercent;
                        break;
                    case 3:// TYPE_NETWORK ：网络
                        break;
                    case 4:// TYPE_RAM_DISK ：闪存
                        break;
                    case 5:// TYPE_CDROM ：光驱
                        break;
                    case 6:// TYPE_SWAP ：页面交换
                        break;
                }
            }
            long disk = totalPercent/fslist.length;
    		%>
    <%out.print("{\"cpu\":\""+cpu+"\",\"jvm\":\""+jvm+"\",\"memory\":\""+memory+"\",\"disk\":\""+disk+"\"}");%>