> From: André Warnier [mailto:a...@ice-sa.com]
> Subject: HelloWorld servlet, or just about
>
> Better yet (but I don't want to abuse your patience), just paste the
> code right here below :
package myPackage;
import java.io.IOException;
import java.io.PrintWriter;
import java.security.Principal;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public final class ShowUser extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws IOException, ServletException {
Principal user = request.getUserPrincipal();
String userName = user == null ? "" : user.getName();
PrintWriter writer;
response.setContentType("text/html");
writer = response.getWriter();
writer.println("<html>");
writer.println("<head>");
writer.println("<title>Sample Servlet to display current
Principal</title>");
writer.println("</head>");
writer.println("<body>");
writer.println("<p>");
writer.println("Current user is " + (userName.length() == 0 ?
"<null>" : userName));
writer.println("</p>");
writer.println("</body>");
writer.println("</html>");
}
}
In your web.xml, include the following:
<servlet>
<servlet-name>UserServlet</servlet-name>
<servlet-class>myPackage.ShowUser</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>UserServlet</servlet-name>
<url-pattern>/showuser</url-pattern>
</servlet-mapping>
- Chuck
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