JSF1006：無法實例類型

的轉換器，我實現瞭解決方案：JSF1006：無法實例類型

這樣的：

轉換器：

@FacesConverter(value="genericEnumConverter") 
public class GenericEnumConverter implements Converter { 

     private static final String ATTRIBUTE_ENUM_TYPE = "GenericEnumConverter.enumType"; 

     @Override 
     public String getAsString(FacesContext context, UIComponent component, Object value) { 
      if (value instanceof Enum) { 
       component.getAttributes().put(ATTRIBUTE_ENUM_TYPE, value.getClass()); 
       return ((Enum<?>) value).name(); 
      } else { 
       throw new ConverterException(new FacesMessage("Value is not an enum: " + value.getClass())); 
      } 
     } 

     @Override 
     @SuppressWarnings({"rawtypes", "unchecked"}) 
     public Object getAsObject(FacesContext context, UIComponent component, String value) { 
      Class<Enum> enumType = (Class<Enum>) component.getAttributes().get(ATTRIBUTE_ENUM_TYPE); 
      try { 
       return Enum.valueOf(enumType, value); 
      } catch (IllegalArgumentException e) { 
       throw new ConverterException(new FacesMessage("Value is not an enum of type: " + enumType)); 
      } 
     } 

    }

XHTML：

<p:selectManyCheckbox converter="genericEnumConverter" value="#{aView.newObject.someValue}">           
<f:selectItems value="#{enumBean.someValues}" var="s" itemValue="#{s}" itemLabel = "#{s.name}"/> 
</p:selectManyCheckbox>

但收到此錯誤：

com.sun.faces.application.ApplicationImpl createConverter 
SEVERE: JSF1006: Cannot instantiate converter of type 
javax.faces.FacesException: Expression Error: Named Object: ' not found. 
at com.sun.faces.application.ApplicationImpl.createConverter(ApplicationImpl.java:1334) 
    at com.sun.faces.facelets.tag.jsf.ValueHolderRule$LiteralConverterMetadata.applyMetadata(ValueHolderRule.java:85) 
    at com.sun.faces.facelets.tag.MetadataImpl.applyMetadata(MetadataImpl.java:81) 
    at javax.faces.view.facelets.MetaTagHandler.setAttributes(MetaTagHandler.java:129) 
    at javax.faces.view.facelets.DelegatingMetaTagHandler.setAttributes(DelegatingMetaTagHandler.java:102) 
    at com.sun.faces.facelets.tag.jsf.ComponentTagHandlerDelegateImpl.doNewComponentActions(ComponentTagHandlerDelegateImpl.java:402) 
    at com.sun.faces.facelets.tag.jsf.ComponentTagHandlerDelegateImpl.apply(ComponentTagHandlerDelegateImpl.java:159) 
    at javax.faces.view.facelets.DelegatingMetaTagHandler.apply(DelegatingMetaTagHandler.java:120) 
    at javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:98) 
    at javax.faces.view.facelets.DelegatingMetaTagHandler.applyNextHandler(DelegatingMetaTagHandler.java:137) 
    at com.sun.faces.facelets.tag.jsf.ComponentTagHandlerDelegateImpl.apply(ComponentTagHandlerDelegateImpl.java:184) 
    at javax.faces.view.facelets.DelegatingMetaTagHandler.apply(DelegatingMetaTagHandler.java:120) 
    at javax.faces.view.facelets.DelegatingMetaTagHandler.applyNextHandler(DelegatingMetaTagHandler.java:137) 
    at com.sun.faces.facelets.tag.jsf.ComponentTagHandlerDelegateImpl.apply(ComponentTagHandlerDelegateImpl.java:184) 
    at javax.faces.view.facelets.DelegatingMetaTagHandler.apply(DelegatingMetaTagHandler.java:120) 
    at javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:98) 
    at javax.faces.view.facelets.DelegatingMetaTagHandler.applyNextHandler(DelegatingMetaTagHandler.java:137) 
    at com.sun.faces.facelets.tag.jsf.ComponentTagHandlerDelegateImpl.apply(ComponentTagHandlerDelegateImpl.java:184) 
    at javax.faces.view.facelets.DelegatingMetaTagHandler.apply(DelegatingMetaTagHandler.java:120) 
    at javax.faces.view.facelets.DelegatingMetaTagHandler.applyNextHandler(DelegatingMetaTagHandler.java:137) 
    at com.sun.faces.facelets.tag.jsf.ComponentTagHandlerDelegateImpl.apply(ComponentTagHandlerDelegateImpl.java:184) 
    at javax.faces.view.facelets.DelegatingMetaTagHandler.apply(DelegatingMetaTagHandler.java:120) 
    at javax.faces.view.facelets.DelegatingMetaTagHandler.applyNextHandler(DelegatingMetaTagHandler.java:137) 
    at com.sun.faces.facelets.tag.jsf.ComponentTagHandlerDelegateImpl.apply(ComponentTagHandlerDelegateImpl.java:184) 
    at javax.faces.view.facelets.DelegatingMetaTagHandler.apply(DelegatingMetaTagHandler.java:120) 
    at javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:98) 
    at javax.faces.view.facelets.DelegatingMetaTagHandler.applyNextHandler(DelegatingMetaTagHandler.java:137) 
    at com.sun.faces.facelets.tag.jsf.ComponentTagHandlerDelegateImpl.apply(ComponentTagHandlerDelegateImpl.java:184) 
    at javax.faces.view.facelets.DelegatingMetaTagHandler.apply(DelegatingMetaTagHandler.java:120) 
    at javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:98) 
    at javax.faces.view.facelets.DelegatingMetaTagHandler.applyNextHandler(DelegatingMetaTagHandler.java:137) 
    at com.sun.faces.facelets.tag.jsf.ComponentTagHandlerDelegateImpl.apply(ComponentTagHandlerDelegateImpl.java:184) 
    at javax.faces.view.facelets.DelegatingMetaTagHandler.apply(DelegatingMetaTagHandler.java:120) 
    at javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:98) 
    at javax.faces.view.facelets.DelegatingMetaTagHandler.applyNextHandler(DelegatingMetaTagHandler.java:137) 
    at com.sun.faces.facelets.tag.jsf.ComponentTagHandlerDelegateImpl.apply(ComponentTagHandlerDelegateImpl.java:184) 
    at javax.faces.view.facelets.DelegatingMetaTagHandler.apply(DelegatingMetaTagHandler.java:120) 
    at javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:98) 
    at com.sun.faces.facelets.tag.ui.DefineHandler.applyDefinition(DefineHandler.java:103) 
    at com.sun.faces.facelets.tag.ui.CompositionHandler.apply(CompositionHandler.java:178) 
    at com.sun.faces.facelets.impl.DefaultFaceletContext$TemplateManager.apply(DefaultFaceletContext.java:395) 
    at com.sun.faces.facelets.impl.DefaultFaceletContext.includeDefinition(DefaultFaceletContext.java:366) 
    at com.sun.faces.facelets.tag.ui.InsertHandler.apply(InsertHandler.java:108) 
    at javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:98) 
    at javax.faces.view.facelets.DelegatingMetaTagHandler.applyNextHandler(DelegatingMetaTagHandler.java:137) 
    at com.sun.faces.facelets.tag.jsf.ComponentTagHandlerDelegateImpl.apply(ComponentTagHandlerDelegateImpl.java:184) 
    at javax.faces.view.facelets.DelegatingMetaTagHandler.apply(DelegatingMetaTagHandler.java:120) 
    at javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:98) 
    at javax.faces.view.facelets.DelegatingMetaTagHandler.applyNextHandler(DelegatingMetaTagHandler.java:137) 
    at com.sun.faces.facelets.tag.jsf.ComponentTagHandlerDelegateImpl.apply(ComponentTagHandlerDelegateImpl.java:184) 
    at javax.faces.view.facelets.DelegatingMetaTagHandler.apply(DelegatingMetaTagHandler.java:120) 
    at javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:98) 
    at com.sun.faces.facelets.tag.jsf.core.ViewHandler.apply(ViewHandler.java:186) 
    at javax.faces.view.facelets.DelegatingMetaTagHandler.applyNextHandler(DelegatingMetaTagHandler.java:137) 
    at com.sun.faces.facelets.tag.jsf.ComponentTagHandlerDelegateImpl.apply(ComponentTagHandlerDelegateImpl.java:184) 
    at javax.faces.view.facelets.DelegatingMetaTagHandler.apply(DelegatingMetaTagHandler.java:120) 
    at javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:98) 
    at com.sun.faces.facelets.compiler.NamespaceHandler.apply(NamespaceHandler.java:93) 
    at javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:98) 
    at com.sun.faces.facelets.compiler.EncodingHandler.apply(EncodingHandler.java:82) 
    at com.sun.faces.facelets.impl.DefaultFacelet.include(DefaultFacelet.java:308) 
    at com.sun.faces.facelets.impl.DefaultFacelet.include(DefaultFacelet.java:367) 
    at com.sun.faces.facelets.impl.DefaultFacelet.include(DefaultFacelet.java:346) 
    at com.sun.faces.facelets.impl.DefaultFaceletContext.includeFacelet(DefaultFaceletContext.java:199) 
    at com.sun.faces.facelets.tag.ui.CompositionHandler.apply(CompositionHandler.java:155) 
    at com.sun.faces.facelets.compiler.NamespaceHandler.apply(NamespaceHandler.java:93) 
    at com.sun.faces.facelets.compiler.EncodingHandler.apply(EncodingHandler.java:82) 
    at com.sun.faces.facelets.impl.DefaultFacelet.apply(DefaultFacelet.java:152) 
    at com.sun.faces.application.view.FaceletViewHandlingStrategy.buildView(FaceletViewHandlingStrategy.java:744) 
    at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:100) 
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) 
    at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139) 
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:509) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
    at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:79) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
    at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:233) 
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) 
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98) 
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) 
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040) 
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607) 
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:315) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) 
    at java.lang.Thread.run(Thread.java:724)

它看起來像轉換器沒有註冊到JSF，但我用：

@FacesConverter(value="genericEnumConverter")

沒有人對此有什麼看法嗎？

來源

2014-04-08 lamostreta

嘗試'@FacesConverter（「genericEnumConverter」）' – Daniel

註釋看起來很好。然而，這個錯誤很奇怪。這表明你實際上使用'converter =「＃{genericEnumConverter}」'而不是'converter =「genericEnumConverter」'。但是，您的代碼顯示了正確的方式。你確定你正在運行你認爲你正在運行的代碼嗎？也許你在其他地方使用這個轉換器，其中'＃{}'是錯誤的？或者，也許你沒有正確地重建/重新部署/重新啓動''converter'屬性後襬弄？ – BalusC

@丹尼爾我試過了，但沒有奏效。 – lamostreta

我和JBoss + JSF 2.0 + SEAM有同樣的錯誤。通過添加以下幾行代碼，問題就解決了。

@Name("testConverter") 
@Scope(ScopeType.CONVERSATION) 
@org.jboss.seam.annotations.faces.Converter 
@BypassInterceptors 
public class TestConverter implements Converter { 
    ... 
}

來源

2015-11-26 15:05:55 spilymp

JSF1006：無法實例類型

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