IOS学习笔记(十)之UIImageView图片视图的基本概念和使用方法
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; @Override public 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 note 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>
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