Java Servlet - Get User IP Address

import java.io.*;
import java.util.Enumeration;

import javax.servlet.*;
import javax.servlet.http.*;

public class ExampleServlet extends HttpServlet {

    protected void service(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {

        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        
        out.println("<html>");
        out.println("<head>");
        out.println("<title>Example Servlet to display user IP-address</title>");
        out.println("</head>");
        out.println("<body>");
        
        //Print out the IP address of the caller
        out.println(request.getRemoteAddr());
        
        out.println("</body>");
        out.println("</html>");
        out.close();
    }
}

import java.io.*;

import java.util.Enumeration;

import javax.servlet.*;

import javax.servlet.http.*;

public class ExampleServlet extends HttpServlet {

protected void service(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

response.setContentType("text/html;charset=UTF-8");

PrintWriter out = response.getWriter();

out.println("<html>");

out.println("<head>");

out.println("<title>Example Servlet to display user IP-address</title>");

out.println("</head>");

out.println("<body>");

//Print out the IP address of the caller

out.println(request.getRemoteAddr());

out.println("</body>");

out.println("</html>");

out.close();

}

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