[jboss-user] [EJB 3.0] - Re: java.lang.ClassCastException

[tornadojava]

"tornadojava" wrote : MyAccount.class
  | package test.four;
  | 
  | import java.io.Serializable;
  | 
  | public interface MyAccount extends Serializable{
  | 	public int add(int i,int j) throws Exception;
  | 	public int getResult() throws Exception;
  | }
  | MyAccountBean.class
  | package test.four;
  | import javax.ejb.Local;
  | import javax.ejb.Stateful;
  | 
  | import org.jboss.annotation.ejb.LocalBinding;
  | 
  | 
  | @SuppressWarnings("serial")
  | @Stateful
  | @Local({MyAccount.class})
  | @LocalBinding(jndiBinding="test/MyAccountBean") 
  | public class MyAccountBean implements MyAccount {
  | 	private int add_falg=0;
  | 	private int total_flag=0;
  | 	public int add(int i, int j)  throws Exception {
  | 		this.add_falg=i+j;
  | 		this.total_flag+=this.add_falg;
  | 		return this.add_falg;
  | 	}
  | 
  | 	public int getResult()  throws Exception{		
  | 		return this.total_flag;
  | 	}
  | 
  | }
  | jsp client
  | <%@ page contentType="text/html; charset=iso"%>
  | <%@ page import="test.four.MyAccount,javax.naming.*"%>
  | <%
  | 		Properties props = new Properties();
  | 		props.setProperty("java.naming.factory.initial", "org.jnp.interfaces.NamingContextFactory");
  | 		props.setProperty("java.naming.provider.url", "localhost:1099");
  | 		props.setProperty("java.naming.factory.url.pkgs", "org.jboss.naming");	
  | 
  | 		InitialContext ctx = new InitialContext(props);
  | 		try {			
  | 							MyAccount A = ctx.lookup("test/MyAccountBean");
  | 						out.println("A.Add() Result is?"+ A.add(1,1));
  | 			out.println("A.getResult() result is?"+ A.getResult());
  |                } catch (Exception e) {
  | 		e.printStackTrace();
  | 			out.println(e.getMessage());
  | 		}
  | %>
  | 
  | code end
  | 
  | when I visit website http://localhst:8080/test/four.jsp,java.lang.ClassCastException was threw.
  | this exception detail:
  | java.lang.ClassCastException: $Proxy157
  | 17:33:13,447 ERROR [STDERR] 	at org.apache.jsp.four_jsp._jspService(four_jsp.java:69)
  | 17:33:13,447 ERROR [STDERR] 	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
  | 17:33:13,447 ERROR [STDERR] 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
  | 17:33:13,447 ERROR [STDERR] 	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
  | 17:33:13,457 ERROR [STDERR] 	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
  | 17:33:13,457 ERROR [STDERR] 	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
  | 17:33:13,457 ERROR [STDERR] 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
  | 17:33:13,457 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
  | 17:33:13,457 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  | 17:33:13,457 ERROR [STDERR] 	at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
  | 17:33:13,457 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
  | 17:33:13,457 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  | 17:33:13,457 ERROR [STDERR] 	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
  | 17:33:13,457 ERROR [STDERR] 	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
  | 17:33:13,457 ERROR [STDERR] 	at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
  | 17:33:13,457 ERROR [STDERR] 	at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
  | 17:33:13,457 ERROR [STDERR] 	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
  | 17:33:13,457 ERROR [STDERR] 	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
  | 17:33:13,457 ERROR [STDERR] 	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
  | 17:33:13,457 ERROR [STDERR] 	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
  | 17:33:13,457 ERROR [STDERR] 	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
  | 17:33:13,457 ERROR [STDERR] 	at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
  | 17:33:13,457 ERROR [STDERR] 	at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
  | 17:33:13,457 ERROR [STDERR] 	at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
  | 17:33:13,457 ERROR [STDERR] 	at java.lang.Thread.run(Thread.java:595)
  | 
  | 
  | pls help me
  | 

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