can a servlet read a jsp file and display its contents?

I posted this in another thread.

Here's some code that reads using a URL. This doesn't work with JSPs as the server executes JSP when it connects but it's useful for other file types. Note that the filename is a URI</h1>This is <code>show.jsp</code></h1>

<hr>

<%! String file = null; %>

<%! java.io.InputStream is = null; %>

<%

file = request.getParameterValues("filename")[0];

try {

is = (new java.net.URL(file)).openStream();

} catch (java.io.IOException ioe) { out.write(file + " not found!<br>"); }

java.io.BufferedReader in = new java.io.BufferedReader(new java.io.InputStreamReader(is));

String line = "";

%>

<pre>

<%

while((line = in.readLine()) != null) {

%>

<%=line%>

<%

}

%>

</pre>

eashanno at 2007-6-29 0:09:25 >

You need to get a "RequestDispatcher" for that JSP file and then "forward ()" the "ServletRequest" and "ServletResponse" to that JSP from your servlet. Processing is then handed over to that JSP file. Etc ...

Note: important words have been quoted. See references below for the people too lazy to look at the JDK docs or the Servlet SDK docs. Notice that "throw" clauses are not shown below.

ServletContext.getRequestDispatcher(java.lang.String path)

ServletContext.getNamedDispatcher(java.lang.String path)

ServletRequest.getRequestDispatcher(java.lang.String path)

RequestDispatcher.forward(ServletRequest request, ServletResponse response)

RequestDispatcher.include(ServletRequest request, ServletResponse response)

strrchr at 2007-6-29 0:09:25 >