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Using ME 4.1.1 GA, Eclipse 3.1, weblogic 8.1 (sp3), struts 1.2.7 on win 2000 (sp4)
I have a simple Struts based web component – whenever I make a change to any java code, save & refresh the web page I always get –
<02-May-2006 16:10:32 o’clock BST> <Error> <HTTP> <BEA-101020> <[ServletContext(id=12584614,name=HWInt,context-path=/HWInt)] Servlet failed with Exception
java.lang.ClassCastException
at org.apache.struts.action.ActionServlet.getProcessorForModule(ActionServlet.java:622)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1190)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
………………………………….I have to redeploy the web component after EVERY change to test – this can’t be right!
any idea what might be wrong?
thanks
harry
ah ha, thought I’d seen this before – In a prevoius thread I had exactly the same thing & solved it by putting –
<container-descriptor>
<servlet-reload-check-secs>-1</servlet-reload-check-secs>
</container-descriptor>in weblogic.xml – works fine now!
Sorry!!!!!!!!!!!!!!!!!!
I am having the same problem. Setting the servet-reload-check-secs effectively disables hot deployment. The problem is stemming from the fact that Weblogic is trying to get stuff out of the servlet context, causing a ClassCastException. The only way around this is by redeploying. Is there a way to force MyEclipse to write the REDEPLOY file out to weblogic in situations like this?
Here is the code that duplicates that problem:
package com.lehman.test;
import java.io.IOException;
public class TestServlet extends HttpServlet {
/**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {response.setContentType(“text/html”);
PrintWriter out = response.getWriter();
out.println(“<!DOCTYPE HTML PUBLIC \”-//W3C//DTD HTML 4.01 Transitional//EN\”>”);
out.println(“<HTML>”);
out.println(” <HEAD><TITLE>A Servlet</TITLE></HEAD>”);
out.println(” <BODY>”);
out.print(” This is “);
out.print(this.getClass());TestObject obj=(TestObject) getServletContext().getAttribute(“test”);
if (obj==null)
{
obj=new TestObject();
getServletContext().setAttribute(“test”,obj);
out.println(“<BR>Created a new TestObject instance”);
}out.println(“<BR>obj=”+obj);
out.println(“<BR>M1”);
out.println(“<BR>M2”);
out.println(“<BR>M3″);out.println(” </BODY>”);
out.println(“</HTML>”);
out.flush();
out.close();}
}
package com.lehman.test;
public class TestObject {
}
<?xml version=”1.0″ encoding=”UTF-8″?>
<web-app version=”2.4″
xmlns=”http://java.sun.com/xml/ns/j2ee”
xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance”
xsi:schemaLocation=”http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd”>
<servlet>
<description>This is the description of my J2EE component</description>
<display-name>This is the display name of my J2EE component</display-name>
<servlet-name>TestServlet</servlet-name>
<servlet-class>com.lehman.test.TestServlet</servlet-class>
</servlet><servlet-mapping>
<servlet-name>TestServlet</servlet-name>
<url-pattern>/servlet/TestServlet</url-pattern>
</servlet-mapping></web-app>
I believe WL just checks the timestamp on the REDEPLOY file, in that case in MyEclipse use File > Open External File and open that file and every time you make changes, add a space then remove the space and save that REDEPLOY file.
Currently we likely won’t make app-server specific changes to the deployers but moving forward we are looking at adopting the WTP connectors if they offer benefits to our users, that that may be a possiliblity.
Opening the REDEPLOY file and manually touching it is the same thing as clicking on the redeploy button in the myeclipse application deployer. What I am looking for is a way of automatically deploying applications without having to click on a button or touching a file.
I don’t understand what you mean by not modifying your deployers with app-server specific stuff. It seems you guys already have many app-server specific deployers. Adding code to support the REDEPLOY file seems to be trivial because it appears you already have a weblogic specific deployer, and all you need to do is write a file out.
I was hoping you guys would have this because I do not want to resort to creating my own eclipse builder that just does this. I also think that hot deploy is almost useless without being able to support this.
