java 代碼如何獲取用戶的硬件信息，就是判斷用戶是否用同一個手機或者同一臺電腦或者同一個ipad訪問了

不可以，這屬于用戶隱私信息，再說如果可以的話，那我們的電腦你不覺得很危險嗎？隨便一個網(wǎng)頁都可以看到你的硬件信息，很危險的。我原來遇到過用戶想這樣搞，最后跟用戶談，不能實現(xiàn)，修改成cookie驗證了,像韓家_四少發(fā)的代碼，只可以在特定環(huán)境下使用，還需要考慮網(wǎng)絡狀態(tài)，而且nbtstat -a是windows 下面的命令，根本不可行。

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Java如何取得計算機硬件信息么

可以的

IMonitorService接口：??

public?interface?IMonitorService?{??

public?MonitorInfoBean?getMonitorInfoBean()?throws?Exception;??

}??

MonitorInfoBean類：??

/*采集系統(tǒng)存取數(shù)據(jù)JavaBean*/??

public?class?MonitorInfoBean?implements?ComparableMonitorInfoBean?{??

/**?操作系統(tǒng).?*/??

private?String?osName;??

/**?總的物理內存.?*/??

private?float?totalMemorySize;??

/**?已使用的物理內存.?*/??

private?float?usedMemory;??

/**?cpu使用率.?*/??

private?double?cpuRatio;??

/**?主機IP地址?*/??

private?String?mIpAddress;??

/**?數(shù)據(jù)存儲時間?*/??

private?String?dDateTime;??

/**內存使用率*/??

private?float?memoryRatio;??

/**linux下Buffers內存*/??

private?float?buffersMemory;???

/**linux下Cached內存*/??

private?float?cachedMemory;??

public?float?getBuffersMemory()?{??

return?buffersMemory;??

}??

public?float?getCachedMemory()?{??

return?cachedMemory;??

}??

public?String?getDDateTime()?{??

return?dDateTime;??

}??

public?void?setDDateTime(String?dateTime)?{??

dDateTime?=?dateTime;??

}??

public?String?getMIpAddress()?{??

return?mIpAddress;??

}??

public?void?setMIpAddress(String?ipAddress)?{??

mIpAddress?=?ipAddress;??

}??

public?String?getOsName()?{??

return?osName;??

}??

public?void?setOsName(String?osName)?{??

this.osName?=?osName;??

}??

public?float?getTotalMemorySize()?{??

return?totalMemorySize;??

}??

public?void?setTotalMemorySize(float?totalMemorySize)?{??

this.totalMemorySize?=?totalMemorySize;??

}??

public?float?getUsedMemory()?{??

return?usedMemory;??

}??

public?void?setUsedMemory(long?usedMemory)?{??

this.usedMemory?=?usedMemory;??

}??

public?double?getCpuRatio()?{??

return?cpuRatio;??

}??

public?void?setCpuRatio(double?cpuRatio)?{??

this.cpuRatio?=?cpuRatio;??

}??

public?int?compareTo(MonitorInfoBean?m)?{??

String?stra?=?this.getDDateTime();??

String?strb?=?m.getDDateTime();??

Timestamp?a?=?Timestamp.valueOf(stra);??

Timestamp?b?=?Timestamp.valueOf(strb);??

if?(a.before(b))?{??

return?-1;??

}?else?if?(a.after(b))?{??

return?1;??

}?else?{??

return?0;??

}??

}??

public?float?getMemoryRatio()?{??

return?memoryRatio;??

}??

public?void?setMemoryRatio(float?memoryRatio)?{??

this.memoryRatio?=?memoryRatio;??

}??

public?void?setUsedMemory(float?usedMemory)?{??

this.usedMemory?=?usedMemory;??

}??

public?void?setBuffersMemory(float?buffersMemory)?{??

this.buffersMemory?=?buffersMemory;??

}??

public?void?setCachedMemory(float?cachedMemory)?{??

this.cachedMemory?=?cachedMemory;??

}??

}??

import?java.io.BufferedReader;??

import?java.io.File;??

import?java.io.FileInputStream;??

import?java.io.FileNotFoundException;??

import?java.io.IOException;??

import?java.io.InputStream;??

import?java.io.InputStreamReader;??

import?java.io.LineNumberReader;??

import?java.net.Inet6Address;??

import?java.net.InetAddress;??

import?java.net.NetworkInterface;??

import?java.net.SocketException;??

import?java.net.UnknownHostException;??

import?java.util.Enumeration;??

import?java.util.StringTokenizer;??

import?sun.management.ManagementFactory;??

import?com.sun.management.OperatingSystemMXBean;

java如何讀取硬件信息 高手進

public?class?Main?{

public?static?void?main(String[]?args)?{

/*?Total?number?of?processors?or?cores?available?to?the?JVM?*/

System.out.println("Available?processors?(cores):?"?+?

Runtime.getRuntime().availableProcessors());

/*?Total?amount?of?free?memory?available?to?the?JVM?*/

System.out.println("Free?memory?(bytes):?"?+?

Runtime.getRuntime().freeMemory());

/*?This?will?return?Long.MAX_VALUE?if?there?is?no?preset?limit?*/

long?maxMemory?=?Runtime.getRuntime().maxMemory();

/*?Maximum?amount?of?memory?the?JVM?will?attempt?to?use?*/

System.out.println("Maximum?memory?(bytes):?"?+?

(maxMemory?==?Long.MAX_VALUE???"no?limit"?:?maxMemory));

/*?Total?memory?currently?available?to?the?JVM?*/

System.out.println("Total?memory?available?to?JVM?(bytes):?"?+?

Runtime.getRuntime().totalMemory());

/*?Get?a?list?of?all?filesystem?roots?on?this?system?*/

File[]?roots?=?File.listRoots();

/*?For?each?filesystem?root,?print?some?info?*/

for?(File?root?:?roots)?{

System.out.println("File?system?root:?"?+?root.getAbsolutePath());

System.out.println("Total?space?(bytes):?"?+?root.getTotalSpace());

System.out.println("Free?space?(bytes):?"?+?root.getFreeSpace());

System.out.println("Usable?space?(bytes):?"?+?root.getUsableSpace());

}

}}