获取PC硬件信息方法一：利用Java Applet



Java Applet可以运行在网页上面，实现功能是通过调用Java来获取本地硬盘信息，前提是本机必须安装Java环境才能运行，不然会提示你安装。

下面是代码：

package com.test;import java.applet.Applet;import java.awt.Graphics;import java.io.BufferedReader;import java.io.File;import java.io.FileWriter;import java.io.InputStreamReader;import java.net.InetAddress;import java.net.NetworkInterface;public class HardWareUtils extends Applet{public HardWareUtils(){}private static final long serialVersionUID = 1L;@Overridepublic void paint(Graphics paint) {super.paint(paint);paint.drawString("获取硬件信息", 10, 10);paint.drawString("CPU  SN:" + HardWareUtils.getCPUSerial(), 10, 30);paint.drawString("主板  SN:" + HardWareUtils.getMotherboardSN(), 10, 50);paint.drawString("C盘   SN:" + HardWareUtils.getHardDiskSN("c"), 10, 70);paint.drawString("MAC  SN:" + HardWareUtils.getMac(), 10, 90);}/** * 获取主板序列号 *  * @return */public static String getMotherboardSN() {String result = "";try {File file = File.createTempFile("realhowto", ".vbs");file.deleteOnExit();FileWriter fw = new java.io.FileWriter(file);String vbs = "Set objWMIService = GetObject(\"winmgmts:\\\\.\\root\\cimv2\")\n"+ "Set colItems = objWMIService.ExecQuery _ \n"+ "   (\"Select * from Win32_BaseBoard\") \n"+ "For Each objItem in colItems \n"+ "    Wscript.Echo objItem.SerialNumber \n"+ "    exit for  ' do the first cpu only! \n" + "Next \n";fw.write(vbs);fw.close();Process p = Runtime.getRuntime().exec("cscript //NoLogo " + file.getPath());BufferedReader input = new BufferedReader(new InputStreamReader(p.getInputStream()));String line;while ((line = input.readLine()) != null) {result += line;}input.close();} catch (Exception e) {e.printStackTrace();}return result.trim();}/** * 获取硬盘序列号 *  * @param drive *            盘符 * @return */public static String getHardDiskSN(String drive) {String result = "";try {File file = File.createTempFile("realhowto", ".vbs");file.deleteOnExit();FileWriter fw = new java.io.FileWriter(file);String vbs = "Set objFSO = CreateObject(\"Scripting.FileSystemObject\")\n"+ "Set colDrives = objFSO.Drives\n"+ "Set objDrive = colDrives.item(\""+ drive+ "\")\n"+ "Wscript.Echo objDrive.SerialNumber"; // see notefw.write(vbs);fw.close();Process p = Runtime.getRuntime().exec("cscript //NoLogo " + file.getPath());BufferedReader input = new BufferedReader(new InputStreamReader(p.getInputStream()));String line;while ((line = input.readLine()) != null) {result += line;}input.close();} catch (Exception e) {e.printStackTrace();}return result.trim();}/** * 获取CPU序列号 *  * @return */public static String getCPUSerial() {String result = "";try {File file = File.createTempFile("tmp", ".vbs");file.deleteOnExit();FileWriter fw = new java.io.FileWriter(file);String vbs = "Set objWMIService = GetObject(\"winmgmts:\\\\.\\root\\cimv2\")\n"+ "Set colItems = objWMIService.ExecQuery _ \n"+ "   (\"Select * from Win32_Processor\") \n"+ "For Each objItem in colItems \n"+ "    Wscript.Echo objItem.ProcessorId \n"+ "    exit for  ' do the first cpu only! \n" + "Next \n";fw.write(vbs);fw.close();Process p = Runtime.getRuntime().exec("cscript //NoLogo " + file.getPath());BufferedReader input = new BufferedReader(new InputStreamReader(p.getInputStream()));String line;while ((line = input.readLine()) != null) {result += line;}input.close();file.delete();} catch (Exception e) {e.fillInStackTrace();}if (result.trim().length() < 1 || result == null) {result = "无CPU_ID被读取";}return result.trim();}/** * 获取MAC地址 */public static String getMac() {try {byte[] mac = NetworkInterface.getByInetAddress(InetAddress.getLocalHost()).getHardwareAddress();StringBuffer sb = new StringBuffer();for (int i = 0; i < mac.length; i++) {if (i != 0) {sb.append("-");}String s = Integer.toHexString(mac[i] & 0xFF);sb.append(s.length() == 1 ? 0 + s : s);}return sb.toString().toUpperCase();} catch (Exception e) {return "";}}}

运行效果如下：

注意：如果直接在Eclipse里面运行正常，如果嵌入到网页中想要正常获取必须进行签名。

对Java Applet进行签名的方法如下：

怎样对java小程序签名受到很多人的关注，网上也有这些方面可供参考的文档，但都不是完整，在这里我给出一份可具体操作的文档，希望能给大家一些帮助。 场景：test.jar：内含待签名的java小程序 结果：签名后，客户端能自动下载java小程序，且java小程序能访问客户端的任何资源

步骤：

(1)将java小程序打包 
  jar cvf test.jar test.class

(2)生成名为chinani.store的密钥库,别名为chinani 
  keytool -genkey -keystore chinani.store -alias chinani
密码：123456 (根据需要自己输入) 以下根据需要输入，最后确认：y

(3)导出chinani.cer数字证书 
  keytool -export -keystore chinani.store -alias chinani -file chinani.cer
密码：123456 (根据需要自己输入)

(4)对test.jar文件进行签名 
  jarsigner -keystore chinani.store  test.jar chinani
密码：123456 (根据需要自己输入)

　　最后写一个html文件，运行此文件即可自动下载安装运行java小程序HTML文件内容如下：

<applet code=Test 
archive="Test.jar" 
width=320 height=300> 
</applet>