Java 如何在jsp页面中显示客户端ip？
我正在尝试获取系统的ip，该系统正在查看我的jsp页面。当客户端系统是windows时，它可以正常工作。但在linux中它不工作。我使用以下代码来完成此操作。有人能建议我解决我的问题吗 代码： Mac.jspJava 如何在jsp页面中显示客户端ip？,java,linux,jsp,Java,Linux,Jsp,我正在尝试获取系统的ip，该系统正在查看我的jsp页面。当客户端系统是windows时，它可以正常工作。但在linux中它不工作。我使用以下代码来完成此操作。有人能建议我解决我的问题吗 代码： Mac.jsp <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<form action="mc" method="post">
<input type="submit" value="Send">
<p>Your IP address is: ${pageContext.request.remoteAddr}</p>
<% String ipAddress = request.getHeader("X-FORWARDED-FOR");
String is="";
if (ipAddress == null) {
is = request.getRemoteAddr();
}
String OS="";
String userAgent = request.getHeader("User-Agent");
if((userAgent.toLowerCase().indexOf("windows") >= 0)){
OS="windows";
}
else if((userAgent.toLowerCase().indexOf("linux") >= 0)){
OS="linux";
}
%>
<p>address:<%=is%> <%=userAgent%></p>
<input type="text" value="<%=is%>" name="ip">
<input type="text" value="<%=OS%>" name="os">
</form>
</body>
</html>
如何在jsp页面中显示linux系统ip根据注释中的讨论，服务器和客户端都在同一个系统中 localhost的IP地址是127.0.0.1
因此，您得到的输出是127.0.0.1从各种头文件中，您可以获得客户机的IP地址，试试看。尝试检查以上所有标题
public static String getClientIpAddr(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.getHeader("HTTP_CLIENT_IP");
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip))
ip = request.getHeader("HTTP_X_FORWARDED_FOR");
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip))
ip = request.getRemoteAddr();
return ip;
}
本地主机的ip地址是127.0.0.1您的linux系统是否托管您的web应用程序？@SpringLearner是的，我的linux系统已托管应用程序。您如何访问jsp。。还是@BigMike客户端通过使用我的ip访问我的jsp，比如192.168.1.145:8080/checkingfiles/mac.jsptry从另一台机器访问你的jsp，你看到了什么？你是说如果有其他linux客户端访问我的jsp就意味着它工作正常吗？@KVK我没有发现你的代码有任何错误，我的回答描述了为什么你会得到127.0.0.1
public static String getClientIpAddr(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.getHeader("HTTP_CLIENT_IP");
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip))
ip = request.getHeader("HTTP_X_FORWARDED_FOR");
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip))
ip = request.getRemoteAddr();
return ip;
}