public class iputil {
public static string getipaddr(httpservletrequest request) {
string ip = request.getheader("x-real-ip");
if (ip == null || ip.length() == 0 || "unknown".equalsignorecase(ip)) {
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();
}
//防止多级代理时返回过个ip。
if(ip != null && ip.indexof(",") != -1){
ip= ip.substring(0,ip.indexof(","));
}
return ip;
}
}
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