jsf - in jsf causing exception 的验证器 =""属性

Question

我们正在尝试从 WS5 迁移到 WAS7 并且 jsf 代码导致以下错误

原始异常:

Error Message: JSPG0227E: Exception caught while translating /jsp/listView/listViewUPD_MAP_UM01.jsp: JSPG0301E: Invalid attribute, validator, for deferred method returning void. 
Error Code: 500
Target Servlet: /jsp/listView/listViewUPD_MAP_UM01.jsp
Error Stack: 
com.ibm.ws.jsp.translator.JspTranslationException: JSPG0227E: Exception caught while translating /jsp/listView/listViewUPD_MAP_UM01.jsp: 
     JSPG0301E: Invalid attribute, validator, for deferred method returning void. 
     at com.ibm.ws.jsp.translator.visitor.generator.BaseTagGenerator.evaluateAttribute(BaseTagGenerator.java:527) 

Answer 1

有类似问题，从WAS6.1迁移到WAS7.0:

异常(exception):

com.ibm.ws.jsp.translator.JspTranslationException: JSPG0227E: Exception caught while translating /RegisterName.jsp:  
    JSPG0301E: Invalid attribute, validator, for deferred method returning void.
        at com.ibm.ws.jsp.translator.visitor.generator.BaseTagGenerator.evaluateAttribute(BaseTagGenerator.java:527)

RegisterName.jsp 片段:

<h:inputText
    id="callerName" 
    size="50"
    value="#{callerSC.currentCaller.name}"
    required="true" 
    validator="#{callerSC.validateCallerName}" 
    converter="StringTrimmer"
    onchange='return setFocusOn(this, "nextButton");'
>
        </h:inputText>

有一个技巧可以将以下代码片段包含到我的 jsp 页面中

<%@ page isELIgnored="false" deferredSyntaxAllowedAsLiteral="false"%>

为我工作，异常消失了

替代方法是将以下代码段添加到 web.xml 中以指定 el-ignored=false 为 JSP

<jsp-config>                                                            
<jsp-property-group>                                                    
<url-pattern>*.jsp</url-pattern>                                        
<el-ignored>false</el-ignored>                                          
</jsp-property-group>                                                   
</jsp-config>