Hi, I tried to use the EA3 release of the JSTL standard tag library in Resin 2.0.4.
My JSP more or less looks like this: <%@ taglib uri="http://java.sun.com/jstl/ea/core"; prefix="c" %> <%@ taglib uri="http://java.sun.com/jstl/ea/xml"; prefix="x" %> <c:import url="http://localhost/path/to/file.xml"; var="xml"/> <x:parse source="$xml" var="doc" /> <x:forEach select="$doc/tic_stream/tic_bericht"> <x:expr select="Weg" /> ... and some more XPath expressions </x:forEach> I was unable to get this to work due to the following exception: TypeError: Cannot convert null to an object. at org.mozilla.javascript.NativeGlobal.constructError(Unknown Source) at org.mozilla.javascript.NativeGlobal.constructError(Unknown Source) at org.mozilla.javascript.NativeGlobal.typeError0(Unknown Source) at org.mozilla.javascript.ScriptRuntime.toObject(Unknown Source) at org.mozilla.javascript.Context.toObject(Unknown Source) at org.apache.taglibs.standard.lang.javascript.JavascriptExpressionEvaluator.pu tAttributesInScope(JavascriptExpressionEvaluator.java:159) at org.apache.taglibs.standard.lang.javascript.JavascriptExpressionEvaluator.ev aluate(JavascriptExpressionEvaluator.java:104) at org.apache.taglibs.standard.lang.support.ExpressionEvaluatorManager.evaluate (ExpressionEvaluatorManager.java:200) at org.apache.taglibs.standard.tag.el.core.ExpressionUtil.evalNotNull(Expressio nUtil.java:85) at org.apache.taglibs.standard.tag.el.core.ImportTag.evaluateExpressions(Import Tag.java:150) at org.apache.taglibs.standard.tag.el.core.ImportTag.doStartTag(ImportTag.java: 101) at _traffic2__jsp._jspService(/pda/traffic2.jsp:19) at com.caucho.jsp.JavaPage.service(JavaPage.java:74) at com.caucho.jsp.Page.subservice(Page.java:485) at com.caucho.server.http.FilterChainPage.doFilter(FilterChainPage.java:176) at com.caucho.server.http.Invocation.service(Invocation.java:278) at com.caucho.server.http.CacheInvocation.service(CacheInvocation.java:129) at com.caucho.server.http.ServletServer.serviceTop(ServletServer.java:847) at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:213) at com.caucho.server.http.HttpRequest.handleConnection(HttpRequest.java:158) at com.caucho.server.TcpConnection.run(TcpConnection.java:140) at java.lang.Thread.run(Thread.java:484) It turned out that a null pointer was stored somewhere in the JavaScript scope for the (null) attribute "caucho.authenticator", which is a built-in Resin attribute. Below is a patch for .../standard/src/org/apache/taglibs/standard/lang/javascript/JavascriptExpre ssionEvaluator.java that fixed this bug for me. I don't know whether this is the correct fix, but at least I was able to have my JSP working as I expected. --- JavascriptExpressionEvaluator.java.orig Thu Dec 20 15:48:57 2001 +++ JavascriptExpressionEvaluator.java Thu Dec 20 15:57:09 2001 @@ -156,7 +156,9 @@ while (attributes !=null && attributes.hasMoreElements()) { attribute = (String)attributes.nextElement(); value = pageContext.getAttribute(attribute, scope); - rhinoScope.put(attribute, rhinoScope, rhinoContext.toObject(value, rhinoScope)); + if (value != null) { + rhinoScope.put(attribute, rhinoScope, rhinoContext.toObject(value, rhinoScope)); + } } } @@ -174,7 +176,9 @@ while (attributes !=null && attributes.hasMoreElements()) { attribute = (String)attributes.nextElement(); value = (pageContext.getRequest()).getParameter(attribute); - rhinoScope.put(attribute, rhinoScope, rhinoContext.toObject(value, rhinoScope)); + if (value != null) { + rhinoScope.put(attribute, rhinoScope, rhinoContext.toObject(value, rhinoScope)); + } } } } Please review, Jeroen -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
