I tried to reproduce the bug with the following simple jsp:
<%@ taglib prefix = "fmt" uri = "http://java.sun.com/jsp/jstl/fmt"; %>
<html>
<head>
<title>String/Object bug</title>
</head>
<body>
<%
request.setAttribute("now", new java.util.Date());
%>
<fmt:formatDate pattern="yyyy-MM-dd" value="${now}" />
</body>
</html>
but both Java versions (oracle 1.8.0_201 and openjdk 1.8.0_222) produce
the following java parts with tomcat 9.0.27:
...
// /index.jsp(12,6) name = value type = null reqTime = true required =
true fragment = false deferredValue = false expectedTypeName = null
deferredMethod = false methodSignature = null
_jspx_th_fmt_005fformatDate_005f0.setValue((java.util.Date)
org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate("${now}",
java.util.Date.class, (javax.servlet.jsp.PageContext)_jspx_page_context,
null));
...
Can you share your tag implementation or even better give us a minimal
webapp that shows the error?
Is the Tomcat version the same for the different Java implementations?
Felix
Am 27.10.19 um 18:14 schrieb LoBello,Jeff:
> Sorry for not mentioning that before, Felix. I’ve seen this bug under Mac &
> Windows Java versions. We only support Java 1.8, at the moment.
>
>
> Mac:
>
> openjdk version "1.8.0_222"
>
> OpenJDK Runtime Environment (AdoptOpenJDK)(build 1.8.0_222-b10)
>
> OpenJDK 64-Bit Server VM (AdoptOpenJDK)(build 25.222-b10, mixed mode)
>
>
>
> Windows:
>
> openjdk version "1.8.0_192"
>
> OpenJDK Runtime Environment (AdoptOpenJDK)(build 1.8.0_192-b12)
>
> OpenJDK 64-Bit Server VM (AdoptOpenJDK)(build 25.192-b12, mixed mode)
>
> We’ve also reproduced this issue with multiple Tomcat versions, including 7,
> 8 & 9. If we use Oracle Java, the issue is fixed & doesn’t happen. The bug
> is very subtle since the JSP does compile, but the data passed to our tag is
> a String instead of a Date object.
>
> Thanks,
>
> Jeff LoBello
> Lead Software Engineer
> Cerner | www.cerner.com<http://www.cerner.com/>
>
>
>
> From: Felix Schumacher <[email protected]>
> Reply-To: Tomcat Users List <[email protected]>
> Date: Saturday, October 26, 2019 at 4:18 PM
> To: Tomcat Users List <[email protected]>
> Subject: Re: JSP custom tag operating different when adoptOpenJDK is used vs
> Oracle (cross post from tomcat-taglibs-user)
>
>
>
> Am 25. Oktober 2019 19:33:19 MESZ schrieb "LoBello,Jeff"
> <[email protected]<mailto:[email protected]>>:
> We have a custom tag, FormatDateTag extends
> org.apache.taglibs.standard.tag.common.fmt.FormatDateSupport. It’s
> been working ok for a number of years under tomcat & Oracle JVM. Now,
> we are moving to adoptOpenJDK & we are seeing some differences in how
> tomcat generation of JSP to Java classes happens when tomcat is doing
> the EL evaluation. Here is an example JSP which shows the issue…
>
> Which Java versions have you used exactly? What os was this? Which tomcat
> version have you used?
>
> Are there any other differences in the setup?
>
> Felix
>
>
> <%@ page language="java" contentType="text/html" isELIgnored="false" %>
> <%@ page import="java.util.Date" %>
> <%@ taglib uri="/WEB-INF/tld/suitags.tld" prefix="sui" %>
>
> <%
> Date chdt = new Date();
> request.setAttribute("chdt", chdt);
> %>
>
> <sui:formatDate value="${chdt}" type="date" dateStyle="shortfull" />
>
> Looking at the compiled JSP source code under Oracle JVM, we see this…
>
> // /tagUnitTests/sui/formatDate/testCaliHDateTime1.jsp(20,0) name =
> value type = java.lang.Object reqTime = true required = true fragment =
> false deferredValue = false expectedTypeName = null deferredMethod =
> false methodSignature = null
> _jspx_th_sui_005fformatDate_005f0.setValue((java.lang.Object)
> org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate("${chdt}",
> java.lang.Object.class,
> (javax.servlet.jsp.PageContext)_jspx_page_context, null));
>
> The same source compiled using AdoptOpenJDK, we see this…
>
> // /tagUnitTests/sui/formatDate/ testCaliHDateTime1.jsp(20,0) name =
> value type = java.lang.Object reqTime = true required = true fragment =
> false deferredValue = false expectedTypeName = null deferredMethod =
> false methodSignature = null
> _jspx_th_sui_005fformatDate_005f0.setValue((java.lang.String)
> org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate("${chdt}",
> java.lang.String.class,
> (javax.servlet.jsp.PageContext)_jspx_page_context, null));
>
> As a workaround, we’re adding calls to <fmt:parseDate> to convert the
> String back to a Date. Has anyone run into this? Any ideas we can try
> to find the root cause?
>
> Thanks,
>
> Jeff LoBello
> Lead Software Engineer
> Cerner | www.cerner.com<http://www.cerner.com/>
>
>
>
>
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> CONFIDENTIALITY NOTICE This message and any included attachments are from
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> non-public information under international, federal, or state securities
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> such information is strictly prohibited and may be unlawful. If you are not
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> the delivery error by e-mail or you may call Cerner's corporate offices in
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