java切换VPN让你像幽灵一样出现在全国各地

package com.selenium.test;import java.io.BufferedReader;import java.io.InputStream;import java.io.InputStreamReader;public class ConnectNetWork { /** * @param args * @throws Exception */ public static void main(String[] args) throws Exception { // TODO Auto-generated method stub connAdsl("VPN_Test","test", "test"); Thread.sleep(1000); cutAdsl("VPN_Test"); Thread.sleep(1000); } /** * 执行CMD命令,并返回String字符串 */ public static String executeCmd(String strCmd) throws Exception { System.out.println("cmd /c " + strCmd); Process p = Runtime.getRuntime().exec("cmd /c " + strCmd); StringBuilder sbCmd = new StringBuilder(); //这里很重要，设置GB2312解决乱码！！！ //如果程序默认编码就是GB2312，可以不写 //我NetBeans默认用UTF8 BufferedReader br = new BufferedReader(new InputStreamReader(p .getInputStream(), "GB2312")); String line; while ((line = br.readLine()) != null) { sbCmd.append(line + "\n"); } return sbCmd.toString(); /* //如果整个过程换成这样，就更清楚了。getInputStream是获取最原始的字节流， //cmd返回的是以GB2312双字节编码的字节流 InputStream in = p.getInputStream(); byte[] b = new byte[2000]; in.read(b); String msg = new String(b, "GB2312"); //用GB2312解释这堆字节，就可以组装成一个正常的String了 //如果上边不写GB2312，等于这里用UTF8组装，结果一样 return msg; */ } /** * 连接ADSL * 语法： rasdial 连接名称 username password * 实例： rasdial 我的宽带 hzhz1234567890 dfdfdfdfdf */ public static boolean connAdsl(String adslTitle, String adslName, String adslPass) throws Exception { System.out.println("正在建立连接."); String adslCmd = "rasdial " + adslTitle + " " + adslName + " " + adslPass; String tempCmd = executeCmd(adslCmd); //String tempCmd = executeCmd("ping www.youku.com"); // 判断是否连接成功 if (tempCmd.indexOf("已连接") > 0) { System.out.println("已成功建立连接."); return true; } else { System.err.println(tempCmd); System.err.println("建立连接失败"); return false; } } /** * 断开ADSL */ public static boolean cutAdsl(String adslTitle) throws Exception { String cutAdsl = "rasdial " + adslTitle + " /disconnect"; String result = executeCmd(cutAdsl); if (result.indexOf("没有连接")!=-1){ System.err.println(adslTitle + "连接不存在!"); return false; } else { System.out.println("连接已断开"); return true; } }}