我正在尝试开发一个Java Web应用程序(Servlet),我需要获取客户端的IP地址。
请不要将此视为重复问题,因为我尝试了stackoverflow中可用的所有可能答案。
以下是我的代码:
1)
String ipAddress = request.getRemoteAddr();
在这种情况下,我得到了大部分的“默认网关地址”(147.120.1.5)。不是我的机器IP地址(174.120.100.17)。
2)
String ipAddress = request.getHeader("X-FORWARDED-FOR");
if (ipAddress == null) {
ipAddress = request.getRemoteAddr();
}
在这种情况下,我得到了大部分的“默认网关地址”(147.120.1.5)。不是我的机器IP地址(174.120.100.17)。
3)
InetAddress IP=InetAddress.getLocalHost();
System.out.println(IP.getHostAddress());
在这种情况下,我得到了服务器IP地址(147.120.20.1)。
我在147.120.100.17中的IP地址。现在我不知道如何获取真正的客户端IP地址。请回答。
非常感谢。
答案 0 :(得分:40)
试试这个,
String ipAddress = request.getHeader("X-FORWARDED-FOR");
if (ipAddress == null) {
ipAddress = request.getRemoteAddr();
}
参考:http://www.mkyong.com/java/how-to-get-client-ip-address-in-java/
答案 1 :(得分:0)
如果您正在尝试获取Dev-environment的IP地址,那么您可以使用: -
public String processRegistrationForm(HttpServletRequest request)
{
String appUrl = request.getScheme() + "://"+ request.getLocalAddr();
return appUrl;
}
request.getLocalAddr()
将返回请求接收系统的IP地址。
希望它有所帮助。
答案 2 :(得分:0)
尝试这个。在所有情况下
private static final String[] HEADERS_TO_TRY = {
"X-Forwarded-For",
"Proxy-Client-IP",
"WL-Proxy-Client-IP",
"HTTP_X_FORWARDED_FOR",
"HTTP_X_FORWARDED",
"HTTP_X_CLUSTER_CLIENT_IP",
"HTTP_CLIENT_IP",
"HTTP_FORWARDED_FOR",
"HTTP_FORWARDED",
"HTTP_VIA",
"REMOTE_ADDR"};
private String getClientIpAddress(HttpServletRequest request) {
for (String header : HEADERS_TO_TRY) {
String ip = request.getHeader(header);
if (ip != null && ip.length() != 0 && !"unknown".equalsIgnoreCase(ip)) {
return ip;
}
}
return request.getRemoteAddr();
}
答案 3 :(得分:-1)
import java.net.UnknownHostException;
/**
* Simple Java program to find IP Address of localhost. This program uses
* InetAddress from java.net package to find IP address.
*
*/
public class IPTest {
public static void main(String args[]) throws UnknownHostException {
InetAddress addr = InetAddress.getLocalHost();
//Getting IPAddress of localhost - getHostAddress return IP Address
// in textual format
String ipAddress = addr.getHostAddress();
System.out.println("IP address of localhost from Java Program: " + ipAddress);
//Hostname
String hostname = addr.getHostName();
System.out.println("Name of hostname : " + hostname);
}
}
<强>输出:强>
IP address of localhost from Java Program: 190.12.209.123
Name of hostname : PCLOND3433