我正在尝试获取查看我的jsp页面的系统的IP。当客户端系统是 Windows 时它工作正常。但在 Linux 中它不起作用。我使用以下代码来执行此操作。任何人都可以建议我解决我的问题
代码:
Mac.jsp
<%@ 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>
findMac.java
package checkingfiles;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Servlet implementation class mc
*/
@WebServlet("/mc")
public class mc extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public mc() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
PrintWriter out=response.getWriter();
Pattern macpt = null;
String c="";
String ip=request.getParameter("ip");
String OS=request.getParameter("os");
System.out.println(ip);
System.out.println(OS);
String[] cmd={};
if (OS.contains("win")) {
// Windows
macpt = Pattern
.compile("[0-9a-f]+-[0-9a-f]+-[0-9a-f]+-[0-9a-f]+-[0-9a-f]+-[0-9a-f]+");
String[] a = { "arp", "-a", ip };
cmd = a;
} else {
// Mac OS X, Linux
macpt = Pattern.compile("[0-9a-f]+:[0-9a-f]+:[0-9a-f]+:[0-9a-f]+:[0-9a-f]+:[0-9a-f]+");
//String ping="ping"+ip;
String ping="ping 192.168.1.136";
try {
Process p = Runtime.getRuntime().exec(ping);
BufferedReader inputStream = new BufferedReader(new InputStreamReader(p.getInputStream()));
String s = "";
inputStream.close();
p.destroy();
} catch (Exception e) {
e.printStackTrace();
}
c="ifconfig -a";
System.out.println(ip);
}
try {
// Run command
Process p=null;
if(OS.contains("win")){
p = Runtime.getRuntime().exec(cmd);
}
else{
p = Runtime.getRuntime().exec(c);
}
p.waitFor();
// read output with BufferedReader
BufferedReader reader = new BufferedReader(new InputStreamReader(
p.getInputStream()));
String line = reader.readLine();
System.out.println("command"+line);
// Loop trough lines
while (line != null) {
Matcher m = macpt.matcher(line);
// when Matcher finds a Line then return it as result
if (m.find()) {
System.out.println("Found");
System.out.println("MAC: " + m.group(0));
// return m.group(0);
}
line = reader.readLine();
}
} catch (IOException e1) {
e1.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
输出 您的IP地址是:127.0.0.1
地址:127.0.0.1 Mozilla/5.0(X11；Ubuntu；Linux i686；rv:36.0)Gecko/20100101 Firefox/36.0
如何在jsp页面中显示linux系统ip
最佳答案
根据评论中的讨论，服务器和客户端都在同一个系统中
本地主机的IP地址是127.0.0.1
因此您得到的输出是 127.0.0.1
关于java - 如何在jsp页面中显示客户端ip？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/33996350/