第一种直接用java自带的InetAddress类：
import java.net.InetAddress;
import java.text.SimpleDateFormat;
import java.util.Date;
public class test{
public static void main(String[] args) throws Exception{
InetAddress addr = InetAddress.getLocalHost();
String ip=addr.getHostAddress();//获得本机IP
String address=addr.getHostName();//获得本机名称
Date d = new Date();
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String dateNowStr = sdf.format(d);
System.out.println("IP: "+ip+" Name: "+address+" Time: "+dateNowStr);
}
}
输出结果如下：
第二种根据Web request请求获取：
package demo.login;
import ins.framework.web.Struts2Action;
import java.text.SimpleDateFormat;
import java.util.Date;
import javax.servlet.http.HttpServletRequest;
import java.net.InetAddress;
@SuppressWarnings("serial")
public class LoginAction extends Struts2Action {
public String login() {
HttpServletRequest request=this.getRequest();
this.getIpAddress(request);
return SUCCESS;
}
public void getIpAddress(HttpServletRequest request) {
String ip = request.getHeader("x-forwarded-for");
System.out.println("x-forwarded-for ip: " + ip);
if (ip != null && ip.length() != 0 && !"unknown".equalsIgnoreCase(ip)) {
// 多次反向代理后会有多个ip值，第一个ip才是真实ip
if( ip.indexOf(",")!=-1 ){
ip = ip.split(",")[0];
}
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("Proxy-Client-IP");
System.out.println("Proxy-Client-IP ip: " + ip);
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("WL-Proxy-Client-IP");
System.out.println("WL-Proxy-Client-IP ip: " + ip);
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("HTTP_CLIENT_IP");
System.out.println("HTTP_CLIENT_IP ip: " + ip);
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("HTTP_X_FORWARDED_FOR");
System.out.println("HTTP_X_FORWARDED_FOR ip: " + ip);
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("X-Real-IP");
System.out.println("X-Real-IP ip: " + ip);
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getRemoteAddr();
System.out.println("getRemoteAddr ip: " + ip);
}
//获取本地ip
if("0:0:0:0:0:0:0:1".equals(ip)){
try {
ip = InetAddress.getLocalHost().getHostAddress();
} catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println("getLocal ip: " + ip);
}
Date d = new Date();
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String dateNowStr = sdf.format(d);
System.out.println("登录IP: " + ip+"登录时间:"+dateNowStr);
}
}
本地会输出：
服务器端如下：
