WLS 9.2 using XmlBeans error

Question

Using WLS 9.2 MP1 and attempting to use XmlBean derived classes from a bean called from a JSP.
          Using XmlBeans v2.3.0.
          Server is WebLogic Server 9.2 MP1 Sun Jan 7 00:56:31 EST 2007 883308
          JSP version is 2.0
          Servlet API is 2.4
          An exception is thrown :
                    javax.servlet.jsp.el.ELException
               at javelin.jsp.el.ArrayRefEvaluator.evaluateBeanType(ArrayRefEvaluator.java:252)
               at javelin.jsp.el.ArrayRefEvaluator.evaluate(ArrayRefEvaluator.java:49)
               at javelin.jsp.el.ELNode$RefExpression.evaluate(ELNode.java:492)
               at javelin.jsp.el.ExpressionEvaluatorImpl$ELExpression.evaluate(ExpressionEvaluatorImpl.java:186)
               at javelin.jsp.el.ExpressionEvaluatorImpl.evaluate(ExpressionEvaluatorImpl.java:124)
               at javelin.jsp.el.ExpressionEvaluatorImpl.evaluate(ExpressionEvaluatorImpl.java:104)
               at jsp_servlet._order.__composeorder3._jsp__tag1(__composeorder3.java:229)
               at jsp_servlet._order.__composeorder3._jspService(__composeorder3.java:205)
               at weblogic.servlet.jsp.JspBase.service(JspBase.java:34)
               at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:223)
               at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
               at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:283)
               at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:175)
               at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3245)
               at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
               at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
               at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2003)
               at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:1909)
               at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1359)
               at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
               at weblogic.work.ExecuteThread.run(ExecuteThread.java:181)
                    This corresponds to the declaration of the root document within the bean e.g.
          ======== JSP code extract ===========
                    <%@ include file="/html/doctypes/StrictDoctype.html" %>
          <%@ taglib uri="utilTLD" prefix="util" %>
          <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
          <%@ taglib uri="http://java.sun.com/jsp/jstl/xml" prefix="x" %>
          <%@ page import="com.web.order.*" %>
          <%@ page language="java" session="false" %>
          <jsp:useBean id="composeXmlBean" scope="request" class="com.web.order.composeXmlBean">
          <jsp:setProperty name="composeXmlBean" property="*"/>
          </jsp:useBean>
          <c:set scope="page" var="xml" value="${composeXmlBean.myXmlString}"/>
                    ============End Jsp code =======
          ========Java code extract =======
                    public class ComposeXmlBean {
               public Document getMyXmlString() {
                         // Use XML Beans to construct the XML String
                     DDServiceDocument rootDoc = DDServiceDocument.Factory.newInstance();
                    ========End Java code ===========
          Anyone have any ideas about what could be causing this error. I have used XmlBeans without problem in WLS 8.1. Is this a WLS9.2 problem caused by Javelin ?
          regards,
          Chris

Answer 1

Chris,
          Firstly, I think your pasted jsp's line below is not correct:
          <jsp:useBean id="composeXmlBean" scope="request"
          class="com.web.order.composeXmlBean">
          Should it be <jsp:useBean id="composeXmlBean" scope="request"
          class="com.web.order.ComposeXmlBean"> ?
          I tried to reprodcue your issues locally, but fails (my testcase works fine)
          since I have not your customerized classes.
          My codes are listed below:
          1) Bean codes:
          package com.web.order;
          public class ComposeXmlBean {
          public String getMyXmlString() {
          return "100";
          public void setMyXmlString(String setV) {
          return;
          2) JSP codes:
          <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
          <%@ taglib uri="http://java.sun.com/jsp/jstl/xml" prefix="x" %>
          <%@ page import="com.web.order.*" %>
          <%@ page language="java" session="false" %>
          <jsp:useBean id="composeXmlBean" scope="request"
          class="com.web.order.ComposeXmlBean">
          <jsp:setProperty name="composeXmlBean" property="*"/>
          </jsp:useBean>
          <c:set scope="page" var="xml" value="${composeXmlBean.myXmlString}"/>
          My sugegstions:
          1) is it a XML bean related issue?
          can you remove XML releated logic to verify whether JSP compiler could
          support this kind of EL ( "${composeXmlBean.myXmlString}") correctly?
          2) If possible, can you pasted a reproducer here(a .war)?
          3) As for WLS8.1, which only support JSP1.2 and dose not support JSP2.0's
          EL, while your failed points is at EL: "${composeXmlBean.myXmlString}" in
          fact, I think your testcases are different during these two tests(WLS 8.1
          and WLS 9.2), Or that EL dose not work at all in WLS8.1. Can you help to
          clarify this?
          Regards
          Leon
          <Chris Thorp> wrote in message news:[email protected]...
          Using WLS 9.2 MP1 and attempting to use XmlBean derived classes from a bean
          called from a JSP.
          Using XmlBeans v2.3.0.
          Server is WebLogic Server 9.2 MP1 Sun Jan 7 00:56:31 EST 2007 883308
          JSP version is 2.0
          Servlet API is 2.4
          An exception is thrown :
                    javax.servlet.jsp.el.ELException
          at
          javelin.jsp.el.ArrayRefEvaluator.evaluateBeanType(ArrayRefEvaluator.java:252)
          at javelin.jsp.el.ArrayRefEvaluator.evaluate(ArrayRefEvaluator.java:49)
          at javelin.jsp.el.ELNode$RefExpression.evaluate(ELNode.java:492)
          at
          javelin.jsp.el.ExpressionEvaluatorImpl$ELExpression.evaluate(ExpressionEvaluatorImpl.java:186)
          at
          javelin.jsp.el.ExpressionEvaluatorImpl.evaluate(ExpressionEvaluatorImpl.java:124)
          at
          javelin.jsp.el.ExpressionEvaluatorImpl.evaluate(ExpressionEvaluatorImpl.java:104)
          at jsp_servlet._order.__composeorder3._jsp__tag1(__composeorder3.java:229)
          at jsp_servlet._order.__composeorder3._jspService(__composeorder3.java:205)
          at weblogic.servlet.jsp.JspBase.service(JspBase.java:34)
          at
          weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:223)
          at
          weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
          at
          weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:283)
          at
          weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:175)
          at
          weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3245)
          at
          weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
          at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
          at
          weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2003)
          at
          weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:1909)
          at
          weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1359)
          at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
          at weblogic.work.ExecuteThread.run(ExecuteThread.java:181)
                    This corresponds to the declaration of the root document within the bean
          e.g.
          ======== JSP code extract ===========
                    <%@ include file="/html/doctypes/StrictDoctype.html" %>
          <%@ taglib uri="utilTLD" prefix="util" %>
          <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
          <%@ taglib uri="http://java.sun.com/jsp/jstl/xml" prefix="x" %>
          <%@ page import="com.web.order.*" %>
          <%@ page language="java" session="false" %>
          <jsp:useBean id="composeXmlBean" scope="request"
          class="com.web.order.composeXmlBean">
          <jsp:setProperty name="composeXmlBean" property="*"/>
          </jsp:useBean>
          <c:set scope="page" var="xml" value="${composeXmlBean.myXmlString}"/>
                    ============End Jsp code =======
          ========Java code extract =======
                    public class ComposeXmlBean {
          public Document getMyXmlString() {
                         // Use XML Beans to construct the XML String
                DDServiceDocument rootDoc =
          DDServiceDocument.Factory.newInstance();
                    ========End Java code ===========
          Anyone have any ideas about what could be causing this error. I have used
          XmlBeans without problem in WLS 8.1. Is this a WLS9.2 problem caused by
          Javelin ?
          regards,
          Chris