Вот что я сделал:
- После этого поста от Линкольна Бакстера Я скачал el-api-2.2.jar и el-impl-2.2.jar
- Затем создал изолированную библиотеку осколков и добавил их туда.
Мы используем Myfaces, поэтому в web.xml добавлен этот бит
<context-param>
<param-name>org.apache.myfaces.EXPRESSION_FACTORY</param-name>
<param-value>com.sun.el.ExpressionFactoryImpl</param-value><br>
</context-param>
Это проблема:
Я не думаю, что это поднято, и приложение все еще использует один из коробок на основе Apache.
Caused by: javax.el.ELException: Error Parsing: #{testBean.testel2('hello')}
at org.apache.el.lang.ExpressionBuilder.createNodeInternal(ExpressionBuilder.java:129)
at org.apache.el.lang.ExpressionBuilder.build(ExpressionBuilder.java:150)
at org.apache.el.lang.ExpressionBuilder.createMethodExpression(ExpressionBuilder.java:201)
at org.apache.el.ExpressionFactoryImpl.createMethodExpression(ExpressionFactoryImpl.java:56)
at org.apache.myfaces.view.facelets.tag.TagAttributeImpl.getMethodExpression(TagAttributeImpl.java:219)
at org.apache.myfaces.view.facelets.tag.jsf.ActionSourceRule$ActionMapper2.applyMetadata(ActionSourceRule.java:73)
at org.apache.myfaces.view.facelets.tag.MetadataImpl.applyMetadata(MetadataImpl.java:45)
at javax.faces.view.facelets.MetaTagHandler.setAttributes(MetaTagHandler.java:68)
at javax.faces.view.facelets.DelegatingMetaTagHandler.setAttributes(DelegatingMetaTagHandler.java:93)
at org.richfaces.view.facelets.html.BehaviorsAddingComponentHandlerWrapper.setAttributes(BehaviorsAddingComponentHandlerWrapper.java:115)
at org.apache.myfaces.view.facelets.tag.jsf.ComponentTagHandlerDelegate.apply(ComponentTagHandlerDelegate.java:269)
at javax.faces.view.facelets.DelegatingMetaTagHandler.apply(DelegatingMetaTagHandler.java:54)
at javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:51)
at javax.faces.view.facelets.DelegatingMetaTagHandler.applyNextHandler(DelegatingMetaTagHandler.java:59)
at org.richfaces.view.facelets.html.BehaviorsAddingComponentHandlerWrapper.applyNextHandler(BehaviorsAddingComponentHandlerWrapper.java:55)
at org.apache.myfaces.view.facelets.tag.jsf.ComponentTagHandlerDelegate.apply(ComponentTagHandlerDelegate.java:324)
at javax.faces.view.facelets.DelegatingMetaTagHandler.apply(DelegatingMetaTagHandler.java:54)
at javax.faces.view.facelets.DelegatingMetaTagHandler.applyNextHandler(DelegatingMetaTagHandler.java:59)
at org.richfaces.view.facelets.html.BehaviorsAddingComponentHandlerWrapper.applyNextHandler(BehaviorsAddingComponentHandlerWrapper.java:55)
at org.apache.myfaces.view.facelets.tag.jsf.ComponentTagHandlerDelegate.apply(ComponentTagHandlerDelegate.java:324)
at javax.faces.view.facelets.DelegatingMetaTagHandler.apply(DelegatingMetaTagHandler.java:54)
at javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:51)
at org.apache.myfaces.view.facelets.tag.ui.DefineHandler.applyDefinition(DefineHandler.java:86)
at org.apache.myfaces.view.facelets.tag.ui.CompositionHandler.apply(CompositionHandler.java:167)
at org.apache.myfaces.view.facelets.impl.TemplateContextImpl$TemplateManagerImpl.apply(TemplateContextImpl.java:128)
at org.apache.myfaces.view.facelets.impl.TemplateContextImpl.includeDefinition(TemplateContextImpl.java:92)
at org.apache.myfaces.view.facelets.impl.DefaultFaceletContext.includeDefinition(DefaultFaceletContext.java:433)
at org.apache.myfaces.view.facelets.tag.ui.InsertHandler.apply(InsertHandler.java:93)
at javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:51)
at org.apache.myfaces.view.facelets.compiler.NamespaceHandler.apply(NamespaceHandler.java:57)
at javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:51)
at org.apache.myfaces.view.facelets.compiler.EncodingHandler.apply(EncodingHandler.java:45)
at org.apache.myfaces.view.facelets.impl.DefaultFacelet.include(DefaultFacelet.java:322)
at org.apache.myfaces.view.facelets.impl.DefaultFacelet.include(DefaultFacelet.java:369)
at org.apache.myfaces.view.facelets.impl.DefaultFacelet.include(DefaultFacelet.java:347)
at org.apache.myfaces.view.facelets.impl.DefaultFaceletContext.includeFacelet(DefaultFaceletContext.java:215)
at org.apache.myfaces.view.facelets.tag.ui.CompositionHandler.apply(CompositionHandler.java:140)
at org.apache.myfaces.view.facelets.compiler.NamespaceHandler.apply(NamespaceHandler.java:57)
at org.apache.myfaces.view.facelets.compiler.EncodingHandler.apply(EncodingHandler.java:45)
at org.apache.myfaces.view.facelets.impl.DefaultFacelet.apply(DefaultFacelet.java:143)
at org.apache.myfaces.view.facelets.FaceletViewDeclarationLanguage.buildView(FaceletViewDeclarationLanguage.java:363)
at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:66)
at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:239)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:191)
... 31 more
Caused by: org.apache.el.parser.ParseException: Encountered "(" at line 1, column 26.
Was expecting one of:
"}" ...
"." ...
"[" ...
">" ...
"gt" ...
"<" ...
"lt" ...
">=" ...
"ge" ...
"<=" ...
"le" ...
"==" ...
"eq" ...
"!=" ...
"ne" ...
"&&" ...
"and" ...
"||" ...
"or" ...
"*" ...
"+" ...
"-" ...
"/" ...
"div" ...
"%" ...
"mod" ...
at org.apache.el.parser.ELParser.generateParseException(ELParser.java:2142)
at org.apache.el.parser.ELParser.jj_consume_token(ELParser.java:2024)
at org.apache.el.parser.ELParser.DeferredExpression(ELParser.java:113)
at org.apache.el.parser.ELParser.CompositeExpression(ELParser.java:40)
at org.apache.el.lang.ExpressionBuilder.createNodeInternal(ExpressionBuilder.java:97)
Обновление : вместо этого я попытался использовать JBoss EL, и я заметил эту строку
[13/02/12 15:19:06:113 EST] 00000029 ExternalSpeci I MyFaces Unified EL support disabled
в журнале, и это привело меня к этомукод
Скопирован из источника myfaces-impl-2.1.6
package org.apache.myfaces.util;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.el.ELContext;
/**
* <p>
* Utility class for determining which specifications are available
* in the current process. See JIRA issue: http://issues.apache.org/jira/browse/MYFACES-2386
* </p>
*
* @author Jan-Kees van Andel
* @author Jakob Korherr (latest modification by $Author: lu4242 $)
* @version $Revision: 963000 $ $Date: 2010-07-11 01:54:18 -0500 (Sun, 11 Jul 2010) $
* @since 2.0
*/
public final class ExternalSpecifications
{
//private static final Log log = LogFactory.getLog(BeanValidator.class);
private static final Logger log = Logger.getLogger(ExternalSpecifications.class.getName());
private static volatile Boolean beanValidationAvailable;
private static volatile Boolean unifiedELAvailable;
//Removed code from here before posting on Stack Overflow
//Relevant method is below
/**
* This method determines if Unified EL is present.
*
* Eager initialization is used for performance. This means Unified EL binaries
* should not be added at runtime after this variable has been set.
* @return true if UEL is available, false otherwise.
*/
public static boolean isUnifiedELAvailable()
{
if (unifiedELAvailable == null)
{
try
{
// Check if the UEL classes are available.
// If the JSP EL classes are loaded first, UEL will not work
// properly, hence it will be disabled.
unifiedELAvailable = (
Class.forName("javax.el.ValueReference") != null
&& Class.forName("javax.el.ValueExpression")
.getMethod("getValueReference", ELContext.class) != null
);
}
catch (Throwable t)
{
//log.log(Level.FINE, "Error loading class (could be normal)", t);
unifiedELAvailable = false;
}
log.info("MyFaces Unified EL support " + (unifiedELAvailable ? "enabled" : "disabled"));
}
return unifiedELAvailable;
}
/**
* this class should not be instantiated.
*/
private ExternalSpecifications()
{
}
}
try Блок выдает исключение при обеих проверках при проверке и во время выполнения, как ожидается, идетдо catch, и в результате false возвращается.Я считаю, что из-за этого он возвращается к EL, предоставляемому WebSphere, а не JBoss EL.