Question

在迁移Web应用程序期间从WAS 6.1到WAS 7时出现异常。此应用程序使用JSF1.1（MyFaces）+ Facelets + Spring（用于支持bean）开发。在某些页面上，我遇到以下异常：

Caused by: javax.faces.FacesException: Could not retrieve value of component with path : {Component-Path : [Class: javax.faces.component.UIViewRoot,ViewId: /pages/recovery_accs.xhtml][Class: javax.faces.component.html.HtmlForm,Id: sequestration][Class: javax.faces.component.html.HtmlDataTable,Id: _id37][Class: javax.faces.component.UIColumn,Id: _id50][Class: javax.faces.component.html.HtmlOutputText,Id: _id52]}

    at org.apache.myfaces.shared_impl.renderkit.RendererUtils.getValue(RendererUtils.java:271)

    at org.apache.myfaces.shared_impl.renderkit.RendererUtils.getStringValue(RendererUtils.java:226)

    at org.apache.myfaces.shared_impl.renderkit.html.HtmlTextRendererBase.renderOutput(HtmlTextRendererBase.java:69)

    at org.apache.myfaces.shared_impl.renderkit.html.HtmlTextRendererBase.encodeEnd(HtmlTextRendererBase.java:57)

    at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:799)

... 46 more

Caused by: javax.faces.el.PropertyNotFoundException: /pages/sub/idocAccsRecoverySub.xhtml @34,55 value="#{varbean.idocAcc.vzOrder}": Bean: com.test.project.bean.idoc.accs.IdocAccBean, property: idocAcc

    at com.sun.facelets.el.LegacyValueBinding.getValue(LegacyValueBinding.java:58)

    at javax.faces.component.UIOutput.getValue(UIOutput.java:118)

    at org.apache.myfaces.shared_impl.renderkit.RendererUtils.getValue(RendererUtils.java:267)

    ... 50 more

Caused by: java.beans.IntrospectionException: Parameter type in setter method does not corresponds to predefined.

    at java.beans.PropertyDescriptor.setWriteMethod(Unknown Source)

    at java.beans.PropertyDescriptor.<init>(Unknown Source)

    at java.beans.StandardBeanInfo.introspectProperties(Unknown Source)

    at java.beans.StandardBeanInfo.<init>(Unknown Source)

    at java.beans.Introspector.getBeanInfoImpl(Unknown Source)

    at java.beans.Introspector.getBeanInfoImpl(Unknown Source)

    at java.beans.Introspector.getBeanInfoImplAndInit(Unknown Source)

    at java.beans.Introspector.getBeanInfo(Unknown Source)

    at org.apache.myfaces.el.PropertyResolverImpl.getPropertyDescriptor(PropertyResolverImpl.java:474)

    at org.apache.myfaces.el.PropertyResolverImpl.getProperty(PropertyResolverImpl.java:438)

    at org.apache.myfaces.el.PropertyResolverImpl.getValue(PropertyResolverImpl.java:85)

    at com.sun.facelets.el.LegacyELContext$LegacyELResolver.getValue(LegacyELContext.java:141)

    at org.apache.el.parser.AstValue.getValue(AstValue.java:123)

    at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)

    at com.sun.facelets.el.TagValueExpression.getValue(TagValueExpression.java:71)

    at com.sun.facelets.el.LegacyValueBinding.getValue(LegacyValueBinding.java:56)

    ... 52 more

尝试使用不同版本的facelet库和不同的EL实现。甚至尝试使用IBM的JDK重新编译项目。仍然没有成功。在Apache Tomcat上它没有问题。

在上面的堆栈跟踪中 - IdocAccBean 是一个常规java bean，它扩展了一个抽象类 IdocAccCore 。如果我使用扩展该类的其他支持bean，我会得到相同的异常。不是从 IdocAccCore 派生的所有其他bean都能正常工作。 IdocAccCore 类中没有什么特别之处，它非常大，所以我认为没有必要提供完整的源代码。

有什么建议 IdocAccCore 类有什么问题吗？

Answer 1

通过更新IBM版本的JRE解决了这个问题。实际上，我在想我正在使用最新版本的IBM JRE。我确实从IBM的网站IBM Development Package for Eclipse下载了一个。问题是这个包包含相当旧版本的IBM java 1.6。我在Websphere AS的fixpacks中找到的IBM java的新版本。您可以在IBM的java 1.6 here

中找到已修复错误的详细列表

WebSphere AS 7上的JSF1.1 Webapp IntrospectionException

1 个答案: