Question

java里,怎么取得IP地址

IP地址是114.241.37.152
内网IP是192.168.1.100
这个IP放我我的网站，jsp的网站
怎么取得这两个IP

Answer 1

package A;
import javax.servlet.http.HttpServletRequest;
public class a {
public String getRemortIP(HttpServletRequest request)
{
if (request.getHeader("x-forwarded-for") == null)
{
return request.getRemoteAddr();
}
return request.getHeader("x-forwarded-for");
}
public String getIpAddr(HttpServletRequest request) {
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();
}
return ip;
}
}
接着有些了个jsp来调用：
<%@ page language="java" import="java.util.*,A.*" pageEncoding="utf-8"%>
<jsp:useBean id="test" class="A.a" scope="request" > </jsp:useBean>
<%
out.println("request.getRemoteAddr(): " + request.getRemoteAddr()); //这里输出的不是真正的ip
test.getIpAddr(); //这里的参数怎么写？
%>