protectedservlet.java

beginJsp2.0外文书籍源代码

package com.wrox.servlets;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import java.security.*;

public class ProtectedServlet extends HttpServlet 
{
  public void init(ServletConfig cfg) throws ServletException 
  {
    super.init(cfg);
  }

  public void doGet(HttpServletRequest req, HttpServletResponse res) 
              throws IOException, ServletException 
  {
    res.setContentType("text/plain");
    PrintWriter out = res.getWriter();
    String authType = req.getAuthType();
    out.println("You are authorized to view this page");
    out.println("You were authenticated using: " + authType 
                + " method of authentication");
    Principal princ = req.getUserPrincipal();
    out.println("The user is: " + princ.getName());
  }
}