programming-examples/java/Servlets_Session_Swing_Util/An included servlet.java
2019-11-15 12:59:38 +01:00

43 lines
1.6 KiB
Java

An included servlet
package com.ack.web.servlet;
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 AnIncludedServlet extends HttpServlet {
public void doGet( HttpServletRequest req, HttpServletResponse res )
throws ServletException, IOException {
PrintWriter pw = res.getWriter();
/**
* note that a servlet that has been included within another
* servlet has access to both the original request uri, servlet
* path, path info, context path and query string through the
* HttpServletRequest object.
*
* However it also has access to these values that can be different
* depending on how the servlet include was dispatched. The servlet
* engine gives you access to these though request attributes as
* demonstrated before.
*/
pw.println( "<h1>The Included Servlet</h1>" );
pw.println( "<br>request uri: " +
req.getAttribute( "javax.servlet.include.request_uri" ) );
pw.println( "<br>context path: " +
req.getAttribute( "javax.servlet.include.context_path" ) );
pw.println( "<br>servlet path: " +
req.getAttribute( "javax.servlet.include.servlet_path" ) );
pw.println( "<br>path info: " +
req.getAttribute( "javax.servlet.include.path_info" ) );
pw.println( "<br>query string: " +
req.getAttribute( "javax.servlet.include.query_string" ) );
}
}