Windows命令行链接和断开vpn

gistfile1.java

public static void changIP() {
	try {
		System.out.println("Disconnecting...");
		Runtime.getRuntime().exec("rasdial myVpn /disconnect");
		System.out.println("Sleep for 10 seconds");
		Thread.sleep(10000);
		System.out.println("Connectiong..");
		Runtime.getRuntime().exec("rasdial myVpn wfwei wangfengwei");
		System.out.println("Over");
	} catch (Exception e) {
		LOG.error("Fail to change IP:" + e.getMessage());
		e.printStackTrace();
	}
}