JSF 获取客户端的IP地址

来源：互联网发布：影视特效制作软件编辑：程序博客网时间：2024/06/05 08:44

在jsf 中直接使用request.getRemoteAddr() 来获取客户端的IP 会报空指针异常。所以在后台bean中写了个方法

       public String getClientIP() {
        try {
            FacesContext fc = FacesContext.getCurrentInstance();

             //实例化request
            HttpServletRequest request = (HttpServletRequest)fc.getExternalContext().getRequest();
            return request.getRemoteAddr();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        return "";
    }

这样就可以获取没有使用代理的客户端的IP地址，若使用了代理则获得的是127.0.0.1或者是192.168.1.110而不是真实的IP地址

可以使用以下方法获得

public String getIpAddr(HttpServletRequest request) {

try{

FacesContext fc = FacesContext.getCurrentInstance();

           HttpServletRequest request = (HttpServletRequest)fc.getExternalContext().getRequest();
    String ip = 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();
    }

} catch (Exception e) {
            e.printStackTrace();
        }
    return ip;
}

也可以获得客户端的MAC地址

   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;
    }