linux怎么查看本机内存大小
245
2023-01-19
Java服务器主机信息监控工具类的示例代码
Java服务器主机信息监控工具类的示例代码
对接前端后效果展示如图：
1、CPU相关信息实体类
/**
* CPU相关信息
*
* @author csp
*/
public class Cpu
{
/**
* 核心数
*/
private int cpuNum;
/**
* CPU总的使用率
*/
private double total;
/**
* CPU系统使用率
*/
private double sys;
/**
* CPU用户使用率
*/
private double used;
/**
* CPU当前等待率
*/
private double wait;
/**
* CPU当前空闲率
*/
private double free;
public int getCpuNum()
{
return cpuNum;
}
public void setCpuNum(int cpuNum)
{
this.cpuNum = cpuNum;
}
public double getTotal()
{
return Arith.round(Arith.mul(total, 100), 2);
}
public void setTotal(double total)
{
this.total = total;
}
public double getSys()
{
return Arith.round(Arith.mul(sys / total, 100), 2);
}
public void setSys(double sys)
{
this.sys = sys;
}
public double getUsed()
{
return Arith.round(Arith.mul(used / total, 100), 2);
}
public void setUsed(double used)
{
this.used = used;
}
public double getWait()
{
return Arith.round(Arith.mul(wait / total, 100), 2);
}
public void setWait(double wait)
{
this.wait = wait;
}
public double getFree()
{
return Arith.round(Arith.mul(free / total, 100), 2);
}
public void setFree(double free)
{
this.free = free;
}
}
2、內存相关信息实体类
/**
* 內存相关信息
*
* @author csp
*/
public class Mem
{
/**
* 内存总量
*/
private double total;
/**
* 已用内存
*/
private double used;
/**
* 剩余内存
*/
private double free;
public double getTotal()
{
return Arith.div(total, (1024 * 1024 * 1024), 2);
}
public void setTotal(long total)
{
this.total = total;
}
public double getUsed()
{
return Arith.div(used, (1024 * 1024 * 1024), 2);
}
public void setUsed(long used)
{
this.used = used;
}
public double getFree()
{
return Arith.div(free, (1024 * 1024 * 1024), 2);
}
public void setFree(long free)
{
this.free = free;
}
public double getUsage()
{
return Arith.mul(Arith.div(used, total, 4), 100);
}
}
3、JVM相关信息实体类
/**
* JVM相关信息
*
* @author csp
*/
public class Jvm
{
/**
* 当前JVM占用的内存总数(M)
*/
private double total;
/**
* JVM最大可用内存总数(M)
*/
private double max;
/**
* JVM空闲内存(M)
*/
private double free;
/**
* JDK版本
*/
private String version;
/**
* JDK路径
*/
private String home;
public double getTotal()
{
return Arith.div(total, (1024 * 1024), 2);
}
public void setTotal(double total)
{
this.total = total;
}
public double getMax()
{
return Arith.div(max, (1024 * 1024), 2);
}
public void setMax(double max)
{
this.max = max;
}
public double getFree()
{
return Arith.div(free, (1024 * 1024), 2);
}
public void setFree(double free)
{
this.free = free;
}
public double getUsed()
{
return Arith.div(total - free, (1024 * 1024), 2);
}
public double getUsage()
{
return Arith.mul(Arith.div(total - free, total, 4), 100);
}
/**
* 获取JDK名称
*/
public String getName()
{
return ManagementFactory.getRuntimeMXBean().getVmName();
}
public String getVersion()
{
return version;
}
public void setVersion(String version)
{
this.version = version;
}
public String getHome()
{
return home;
}
public void setHome(String home)
{
this.home = home;
}
/**
* JDK启动时间
*/
public String getStartTime()
{
return DateUtils.parseDateToStr(DateUtils.YYYY_MM_DD_HH_MM_SS, DateUtils.getServerStartDate());
}
/**
* JDK运行时间
*/
public String getRunTime()
{
return DateUtils.getDatePoor(DateUtils.getNowDate(), DateUtils.getServerStartDate());
}
}
4、主机系统相关信息实体类
/**
* 系统相关信息
*
* @author csp
*/
public class Sys
{
/**
* 服务器名称
*/
private String computerName;
/**
* 服务器Ip
*/
private String computerIp;
/**
* 项目路径
*/
private String userDir;
/**
* 操作系统
*/
private String osName;
/**
* 系统架构
*/
private String osArch;
public String getComputerName()
{
return computerName;
}
public void setComputerName(String computerName)
{
this.computerName = computerName;
}
public String getComputerIp()
{
return computerIp;
}
public void setComputerIp(String computerIp)
{
this.computerIp = computerIp;
}
public String getUserDir()
{
return userDir;
}
public void setUserDir(String userDir)
{
this.userDir = userDir;
}
public String getOsName()
{
return osName;
}
public void setOsName(String osName)
{
this.osName = osName;
}
public String getOsArch()
{
return osArch;
}
public void setOsArch(String osArch)
{
this.osArch = osArch;
}
}
5、系统文件相关信息实体类
/**
* 系统文件相关信息
*
* @author csp
*/
public class SysFile
{
/**
* 盘符路径
*/
private String dirName;
/**
* 盘符类型
*/
private String sysTypeName;
/**
* 文件类型
*/
private String typeName;
/**
* 总大小
*/
private String total;
/**
* 剩余大小
*/
private String free;
/**
* 已经使用量
*/
private String used;
/**
* 资源的使用率
*/
private double usage;
public String getDirName()
{
return dirName;
}
public void setDirName(String dirName)
{
this.dirName = dirName;
}
public String getSysTypeName()
{
return sysTypeName;
}
public void setSysTypeName(String sysTypeName)
{
this.sysTypeName = sysTypeName;
}
public String getTypeName()
{
return typeName;
}
public void setTypeName(String typeName)
{
this.typeName = typeName;
}
public String getTotal()
{
return total;
}
public void setTotal(String total)
{
this.total = total;
}
public String getFree()
{
return free;
}
public void setFree(String free)
{
this.free = free;
}
public String getUsed()
{
return used;
}
public void setUsed(String used)
{
this.used = used;
}
public double getUsage()
{
return usage;
}
public void setUsage(double usage)
{
this.usage = usage;
}
}
6、服务器相关信息实体类
/**
* 服务器相关信息
*
* @author csp
*/
public class Server
{
private static final int OSHI_WAIT_SECOND = 1000;
/**
* CPU相关http://信息
*/
private Cpu cpu = new Cpu();
/**
* 內存相关信息
*/
private Mem mem = new Mem();
/**
* JVM相关信息
*/
private Jvm jvm = new Jvm();
/**
* 服务器相关信息
*/
private Sys sys = new Sys();
/**
* 磁盘相关信息
*/
private List
public Cpu getCpu()
{
return cpu;
}
public void setCpu(Cpu cpu)
{
this.cpu = cpu;
}
public Mem getMem()
{
return mem;
}
public void setMem(Mem mem)
{
this.mem = mem;
}
public Jvm getJvm()
{
return jvm;
}
public void setJvm(Jvm jvm)
{
this.jvm = jvm;
}
public Sys getSys()
{
return sys;
}
public void setSys(Sys sys)
{
this.sys = sys;
}
public List
{
return sysFiles;
}
public void setSysFiles(List
{
this.sysFiles = sysFiles;
}
/**
* 获取服务器主机相关信息
* @throws Exception
*/
public void copyTo() throws Exception
{
// 获取系统信息
SystemInfo si = new SystemInfo();
// 根据SystemInfo获取硬件实例
HardwareAbstractionLayer hal = si.getHardware();
// 获取硬件CPU信息
setCpuInfo(hal.getProcessor());
// 获取硬件内存信息
setMemInfo(hal.getMemory());
// 设置服务器信息
setSysInfo();
// 设置java虚拟机
setJvmInfo();
// 设置磁盘信息
setSysFiles(si.getOperatingSystem());
}
/**
* 设置CPU信息
*/
private void setCpuInfo(CentralProcessor processor)
{
// CPU信息
long[] prevTicks = processor.getSystemCpuLoadTicks();
Util.sleep(OSHI_WAIT_SECOND);
long[] ticks = processor.getSystemCpuLoadTicks();
long nice = ticks[TickType.NICE.getIndex()] - prevTicks[TickType.NICE.getIndex()];
long irq = ticks[TickType.IRQ.getIndex()] - prevTicks[TickType.IRQ.getIndex()];
long softirq = ticks[TickType.SOFTIRQ.getIndex()] - prevTicks[TickType.SOFTIRQ.getIndex()];
long steal = ticks[TickType.STEAL.getIndex()] - prevTicks[TickType.STEAL.getIndex()];
long cSys = ticks[TickType.SYSTEM.getIndex()] - prevTicks[TickType.SYSTEM.getIndex()];
long user = ticks[TickType.USER.getIndex()] - prevTicks[TickType.USER.getIndex()];
long iowait = ticks[TickType.IOWAIT.getIndex()] - prevTicks[TickType.IOWAIT.getIndex()];
long idle = ticks[TickType.IDLE.getIndex()] - prevTicks[TickType.IDLE.getIndex()];
long totalCpu = user + nice + cSys + idle + iowait + irq + softirq + steal;
cpu.setCpuNum(processor.getLogicalProcessorCount());// Cpu 核数
cpu.setTotal(totalCpu);// CPU总的使用率
cpu.setSys(cSys);// CPU系统使用率
cpu.setUsed(user);// CPU用户使用率
cpu.setWait(iowait);// CPU当前等待率
cpu.setFree(idle);// CPU当前空闲率
}
/**
* 设置内存信息
*/
private void setMemInfo(GlobalMemory memory)
{
mem.setTotal(memory.getTotal());// 总内存大小
mem.setUsed(memory.getTotal() - memory.getAvailable());// 已使用内存大小
mem.setFree(memory.getAvailable());// 空闲内存大小
}
/**
* 设置服务器信息
*/
private void setSysInfo()
{
// 获取当前的系统属性
Properties props = System.getProperties();
sys.setComputerName(IpUtils.getHostName());// 获取主机名称
sys.setComputerIp(IpUtils.getHostIp());// 获取主机IP
sys.setOsName(props.getProperty("os.name"));// 获取主机类型 Windows 10
sys.setOsArch(props.getProperty("os.arch"));// 获取主机显卡类型 amd64
sys.setUserDir(props.getProperty("user.dir"));// 获取项目所在路径 F:\git\ruoyi\RuoYi-vue
}
/**
* 设置Java虚拟机
*/
private void setJvmInfo() throws UnknownHostException
{
Properties props = System.getProperties();
jvm.setTotal(Runtime.getRuntime().totalMemory());// JVM总内存 625.5M
jvm.setMax(Runtime.getRuntime().maxMemory());// JVM已使用内存 347.99M
jvm.setFree(Runtime.getRuntime().freeMemory());// JVM空闲内存 277.51M
jvm.setVersion(props.getProperty("java.version"));// jdk版本 1.8
jvm.setHome(props.getProperty("java.home"));// JDK安装路径 C:\Program Files\Java\jdk1.8.0_201\jre
}
/**
* 设置磁盘信息
*/
private void setSysFiles(OperatingSystem os)
{
// 根据 操作系统（OS） 获取 FileSystem
FileSystem fileSystem = os.getFileSystem();
// 根据 FileSystem 获取主机磁盘信息list集合
List
for (OSFileStore fs : fsArray)
{
long free = fs.getUsableSpace();// 磁盘空闲容量
long total = fs.getTotalSpace();// 磁盘总容量
long used = total - free;// 磁盘已使用容量
SysFile sysFile = new SysFile();
sysFile.setDirName(fs.getMount());// 磁盘符号 C:\
sysFile.setSysTypeName(fs.getType());// 磁盘类型 NTFS
sysFile.setTypeName(fs.getName());// 磁盘名称 本地固定磁盘 (C:)
sysFile.setTotal(convertFileSize(total));// 磁盘总容量
sysFile.setFree(convertFileSize(free));// 磁盘空闲容量
sysFile.setUsed(convertFileSize(used));// 磁盘已使用容量
sysFile.setUsage(Arith.mul(Arith.div(used, total, 4), 100));// 磁盘资源的使用率
sysFiles.add(sysFile);
}
}
/**
* 字节转换
*
* @param size 字节大小
* @return 转换后值
*/
public String convertFileSize(long size)
{
long kb = 1024;
long mb = kb * 1024;
long gb = mb * 1024;
if (size >= gb)
{
return String.format("%.1f GB", (float) size / gb);
}
else if (size >= mb)
{
float f = (float) size / mb;
return String.format(f > 100 ? "%.0f MB" : "%.1f MB", f);
}
else if (size >= kb)
{
float f = (float) size / kb;
return String.format(f > 100 ? "%.0f KB" : "%.1f KB", f);
}
else
{
return String.format("%d B", size);
}
}
}
7、Controller接口对接前端
/**
* 服务器监控
*
* @author csp
*/
@RestController
@RequestMapping("/monitor/server")
public class ServerController
{
/**
* 获取服务器相关信息
* @return
* @throws Exception
*/
@PreAuthorize("@ss.hasPermi('monitor:server:list')")// Spring Security自定义权限控制注解，不影响结果，可以不加
// AjaxResult 自定义返回结果类，不影响结果，可以自定义
@GetMapping()
public AjaxResult getInfo() throws Exception
{
// 获取服务器相关信息
Server server = new Server();
server.copyTo();
return AjaxResult.success(server);
}
}
版权声明：本文内容由网络用户投稿，版权归原作者所有，本站不拥有其著作权，亦不承担相应法律责任。如果您发现本站中有涉嫌抄袭或描述失实的内容，请联系我们jiasou666@gmail.com 处理，核实后本网站将在24小时内删除侵权内容。
相关文章
发表评论
暂时没有评论，来抢沙发吧~