JSF/JAVA 根据IP获取客户端Mac地址
需要对用户的 ip 和 mac 地址进行验证，这里用到获取客户端ip和mac地址的两个方法，留存。
1.获取客户端ip地址(这个必须从客户端传到后台)：
jsp页面下，很简单，request.getRemoteAddr();
因为系统的VIew层是用JSF来实现的，因此页面上没法直接获得类似request，在bean里做了个强制转换
public String getMyIP() {
try {
FacesContext fc = FacesContext.getCurrentInstance();
HttpServletRequest request = (HttpServletRequest)fc.getExternalContext().getRequest();
return request.getRemoteAddr();
}
catch (Exception e) {
e.printStackTrace();
}
return "";
} 2.获取客户端mac地址
调用window的命令，在后台Bean里实现 通过ip来获取mac地址。方法如下：public String getMACAddress(String ip){
String str = "";
String macAddress = "";
try {
Process p = Runtime.getRuntime().exec("nbtstat -A " + ip);
InputStreamReader ir = new InputStreamReader(p.getInputStream());
LineNumberReader input = new LineNumberReader(ir);
for (int i = 1; i < 100; i++) {
str = input.readLine();
if (str != null) {
if (str.indexOf("MAC Address") > 1) {
macAddress = str.substring(str.indexOf("MAC Address") + 14, str.length());
break;
}
}
}
} catch (IOException e) {
e.printStackTrace(System.out);
}
return macAddress;
} 完整代码：
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.LineNumberReader;
public class GetMACAddress {
public String getMACAddress(String ipAddress) {
String str = "", strMAC = "", macAddress = "";
try {
Process pp = Runtime.getRuntime().exec("nbtstat -a " + ipAddress);
InputStreamReader ir = new InputStreamReader(pp.getInputStream());
LineNumberReader input = new LineNumberReader(ir);
for (int i = 1; i < 100; i++) {
str = input.readLine();
if (str != null) {
if (str.indexOf("MAC Address") > 1) {
strMAC = str.substring(str.indexOf("MAC Address") + 14,
str.length());
break;
}
}
}
} catch (IOException ex) {
return "Can't Get MAC Address!";
}
//
if (strMAC.length() < 17) {
return "Error!";
}
macAddress = strMAC.substring(0, 2) + ":" + strMAC.substring(3, 5)
+ ":" + strMAC.substring(6, 8) + ":" + strMAC.substring(9, 11)
+ ":" + strMAC.substring(12, 14) + ":"
+ strMAC.substring(15, 17);
//
return macAddress;
}
public static void main(String[] args) {
GetMACAddress getMACAddress = new GetMACAddress();
System.out.println(getMACAddress.getMACAddress("59.78.63.38")); //获得该ip地址的mac地址
}
public static String procAll(String str) {
return procStringEnd(procFirstMac(procAddress(str)));
}
public static String procAddress(String str) {
int indexof = str.indexOf("Physical Address");
if (indexof > 0) {
return str.substring(indexof, str.length());
}
return str;
}
public static String procFirstMac(String str) {
int indexof = str.indexOf(":");
if (indexof > 0) {
return str.substring(indexof + 1, str.length()).trim();
}
return str;
}
public static String procStringEnd(String str) {
int indexof = str.indexOf("\r");
if (indexof > 0) {
return str.substring(0, indexof).trim();
}
return str;
}
} 只要写一个servlet来调用这个类的getMACAddress(Stringnetip)方法就可以获得客户端的mac地址了，相信你会写jsp应该对servlet也不陌生吧，在jsp中调用servlet通过session传递返回的mac地址，加以判断就可以了
mac地址是可以通过注册表修改的，不建议以此来作为限制依据~补充：
关于获取IP地址的方式，最近在linux下有一个教训，如果单纯通过InetAddress来获取IP地址，就会出现在不同的机器上IP地址不同的问题。
InetAddress.getLocalHost().getAddress()实际上是根据hostname来获取IP地址的。linux系统在刚刚装完默认的hostname是localhost，所以通过上面代码获取到的本机ip就是127.0.0.1,相对应，比如我的hostname就是rjlin.atsig.com返回的ip地址确是atsig.com的地址。暂时采用下面代码来处理，当然还不够灵活：
publicstaticbyte[]getIp()throwsUnknownHostException{
byte[]b=InetAddress.getLocalHost().getAddress();
EnumerationallNetInterfaces=null;
try{
allNetInterfaces=NetworkInterface.getNetworkInterfaces();
}catch(SocketExceptione){
e.printStackTrace();
}
InetAddressip=null;
NetworkInterfacenetInterface=null;
while(allNetInterfaces.hasMoreElements()){
netInterface=(NetworkInterface)allNetInterfaces.nextElement();
if(netInterface.getName().trim().equals("eth0")){
Enumerationaddresses=netInterface.getInetAddresses();
while(addresses.hasMoreElements()){
ip=(InetAddress)addresses.nextElement();
}
break;
}
}
if(ip!=null&&ipinstanceofInet4Address){
returnb=ip.getAddress();
}
returnb;
}补充：
// 获取真实IP的方法().
public String getIpAddr(HttpServletRequest request) {
Stringip=request.getHeader("x-forwarded-for");
if(ip==null||ip.length()==0||"unknown".equalsIgnoreCase(ip)){
ip=request.getHeader("Proxy-Client-IP");
}
if(ip==null||ip.length()==0||"unknown".equalsIgnoreCase(ip)){
ip=request.getHeader("WL-Proxy-Client-IP");
}
if(ip==null||ip.length()==0||"unknown".equalsIgnoreCase(ip)){
ip=request.getRemoteAddr();
}
returnip;
}