Hi, I have the following strange behaviour: I implemented a simple
stateless session bean (EJB3.0) that returns a Vector of a custom class
called 'Info', which contains a String field accessible via Info.getName().
The method of the bean interface is as follows:
public Vector getInfoVector();
The Info class is serializable and everything works fine using a stand-alone
Java client.
But when I try to use this bean in a JSP file, the following problem occurs:
I am able to invoke the session bean method (getInfoVector) and I get the Vector result.
I can successfully do the following:
Object obj = vecResult.get(0);
out.println(obj.getClass().getName()+"<br/>");
Object objRes = obj.getClass().getMethod("getName", new Class[]{}).invoke(obj, new Object[]{});
The class name of line 2 is exactly the class of Info and the intrtospection
call results the correct data, i.e., the serialization of the Info class worked correctly.
But I *cannot* do this:
Info info = (Info)vecResult.get(0);
out.println("Info: " + info.getName());
The first (casting) line throws the following exception:
java.lang.ClassCastException: com.dcx.rt.iqminer.ejbs.dataprovider.params.DataSourceInfo
at org.apache.jsp.DataSourcesOverview_jsp._jspService(org.apache.jsp.DataSourcesOverview_jsp:76)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
.....
Anyone any idea?
Thanks in advance!
BTW: I am using JBoss 4.0.4RC1 and it does not seam to be an error
resulting from not using generics. It will crash in the same way if I use Vector as return type.
