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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=12517 JSP compilation error with nested scripting variable Summary: JSP compilation error with nested scripting variable Product: Tomcat 4 Version: 4.1.9 Platform: PC OS/Version: Windows XP Status: NEW Severity: Major Priority: Other Component: Jasper 2 AssignedTo: [EMAIL PROTECTED] ReportedBy: [EMAIL PROTECTED] Hello The actual version of Tomcat is 4.1.10, but there's no choice for it. I've a JSP page extending TagSupport with a custom tag that defines a scripting variable with a NESTED scope. Here's the extra info class: public class WizardExtraInfo extends TagExtraInfo { public VariableInfo[] getVariableInfo(TagData data) { return new VariableInfo[] { new VariableInfo("profiles", "browser.client.jsp.Profiles", true, VariableInfo.NESTED) }; } } When referencing the scripting variable inside the tag body a NullPointerException is thrown. Looking at the generated java code I see that the variable is declared immediately after doStartTag() but synchronized only after doAfterBody(). /* ---- cb:wizard ---- */ browser.client.jsp.tag.Wizard _jspx_th_cb_wizard_0 = browser.client.jsp.tag.Wizard) _jspx_tagPool_cb_wizard_undoAction_nextPage_nextAction_cancelAction.get (browser.client.jsp.tag.Wizard.class); _jspx_th_cb_wizard_0.setPageContext(pageContext); _jspx_th_cb_wizard_0.setParent(null); _jspx_th_cb_wizard_0.setXXX; int _jspx_eval_cb_wizard_0 = _jspx_th_cb_wizard_0.doStartTag(); if (_jspx_eval_cb_wizard_0 != javax.servlet.jsp.tagext.Tag.SKIP_BODY) { browser.client.jsp.Profiles profiles = null; do { /* body */ ... profiles.get(...); // throws NullPointerException ... /* end body */ int evalDoAfterBody = _jspx_th_cb_wizard_0.doAfterBody(); profiles = (browser.client.jsp.Profiles) pageContext.findAttribute ("profiles"); if (evalDoAfterBody != javax.servlet.jsp.tagext.BodyTag.EVAL_BODY_AGAIN) break; } while (true); } if (_jspx_th_cb_wizard_0.doEndTag() == javax.servlet.jsp.tagext.Tag.SKIP_PAGE) return; _jspx_tagPool_cb_wizard_undoAction_nextPage_nextAction_cancelAction.reuse (_jspx_th_cb_wizard_0); The same page compiled with Tomcat 3.3.1 correctly translates to int _jspx_eval_cb_wizard_0 = _jspx_th_cb_wizard_0.doStartTag(); if (_jspx_eval_cb_wizard_0 == javax.servlet.jsp.tagext.BodyTag.EVAL_BODY_TAG) throw new JspTagException("Since tag handler..."); if (_jspx_eval_cb_wizard_0 != javax.servlet.jsp.tagext.Tag.SKIP_BODY) { do { browser.client.jsp.Profiles profiles = null; profiles = (browser.client.jsp.Profiles) pageContext.findAttribute ("profiles"); .... Thanks in advance. Daniele Gaffuri -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
