HttpServletRequest: getUserPrincipal()

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class AuthenticationSnoop extends HttpServlet {

  public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException,
      IOException {
    res.setContentType("text/html");
    PrintWriter out = res.getWriter();

    out.println("<HTML><BODY>");

    out.println("<H1>This is a password protected resource</H1>");
    out.println("<PRE>");
    out.println("User Name: " + req.getRemoteUser());
    String name = (req.getUserPrincipal() == null) ? null : req.getUserPrincipal().getName();
    out.println("Principal Name: " + name);
    out.println("Authentication Type: " + req.getAuthType());
    out.println("Is a Manager: " + req.isUserInRole("manager"));
    out.println("</PRE>");
    out.println("</BODY></HTML>");
  }
}

Related examples in the same category

1.	HttpServletRequest: getAuthType()
2.	HttpServletRequest: getCookies()
3.	HttpServletRequest: getHeaders(String name)
4.	HttpServletRequest: getHeader( ) by Accept-Language
5.	HttpServletRequest: getHeader( ) by Accept-Charset
6.	HttpServletRequest: getRequestURI()
7.	ServletRequest: getReader()
8.	ServletRequest: getRequestDispatcher(String arg0)
9.	HttpServletRequest: getHeaderNames()
10.	HttpServletRequest: getPathInfo()
11.	HttpServletRequest: getPathTranslated()
12.	HttpServletRequest: getQueryString()
13.	HttpServletRequest: getRemoteUser()
14.	HttpServletRequest: getSession()
15.	HttpServletRequest: isRequestedSessionIdFromCookie()
16.	HttpServletRequest: isRequestedSessionIdFromURL()
17.	HttpServletRequest: isRequestedSessionIdValid()
18.	HttpServletRequest: isUserInRole(String arg0)

HttpServletRequest: getUserPrincipal() : HttpServletRequest « javax.servlet.http « Java by API

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