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我在 PrimeFaces 应用程序上遇到了非常奇怪的错误，这是我以前从未见过的。

无法恢复 StateHolder 类型org.primefaces.component.resetinput.ResetInputActionListener（缺少无参数构造函数？）

该类org.primefaces.component.resetinput.ResetInputActionListener实际上没有无参数构造函数，但以前不是问题......否则没有primefaces应用程序将运行......

该错误的实际原因是什么以及如何解决？

我在WebSphere 7上使用PrimeFaces 3.5和MyFaces 2.0.7。

                                 javax.faces.FacesException: java.lang.RuntimeException: Could not restore StateHolder of type org.primefaces.component.resetinput.ResetInputActionListener (missing no-args constructor?)
    at org.apache.myfaces.shared_impl.context.ExceptionHandlerImpl.wrap(ExceptionHandlerImpl.java:241)
    at org.apache.myfaces.shared_impl.context.ExceptionHandlerImpl.handle(ExceptionHandlerImpl.java:156)
    at org.apache.myfaces.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.java:191)
    at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:189)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1663)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1597)
    at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:131)
    at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:79)
    at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:188)
    at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:116)
    at de.datev.commons.web.filter.CharsetEncodingFilter.doFilter(CharsetEncodingFilter.java:54)
    at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:188)
    at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:116)
    at com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:77)
    at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:908)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:934)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:502)
    at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:179)
    at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:91)
    at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:864)
    at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1592)
    at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:186)
    at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:452)
    at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewRequest(HttpInboundLink.java:511)
    at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.processRequest(HttpInboundLink.java:305)
    at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:83)
    at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)
    at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
    at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
    at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138)
    at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:204)
    at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:775)
    at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:905)
    at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1604)
Caused by: java.lang.RuntimeException: Could not restore StateHolder of type org.primefaces.component.resetinput.ResetInputActionListener (missing no-args constructor?)
    at javax.faces.component.UIComponentBase.restoreAttachedState(UIComponentBase.java:1603)
    at javax.faces.component._DeltaList.restoreState(_DeltaList.java:251)
    at javax.faces.component.UIComponentBase.restoreAttachedState(UIComponentBase.java:1616)
    at javax.faces.component.UIComponentBase.restoreState(UIComponentBase.java:1730)
    at javax.faces.component.UIComponentBase.processRestoreState(UIComponentBase.java:1386)
    at javax.faces.component.UIComponentBase.processRestoreState(UIComponentBase.java:1429)
    at javax.faces.component.UIComponentBase.processRestoreState(UIComponentBase.java:1429)
    at javax.faces.component.UIComponentBase.processRestoreState(UIComponentBase.java:1429)
    at javax.faces.component.UIComponentBase.processRestoreState(UIComponentBase.java:1429)
    at javax.faces.component.UIComponentBase.processRestoreState(UIComponentBase.java:1429)
    at javax.faces.component.UIViewRoot.processRestoreState(UIViewRoot.java:736)
    at org.apache.myfaces.application.StateManagerImpl.restoreView(StateManagerImpl.java:129)
    at org.apache.myfaces.shared_impl.view.ViewDeclarationLanguageBase.restoreView(ViewDeclarationLanguageBase.java:106)
    at org.apache.myfaces.view.facelets.FaceletViewDeclarationLanguage.restoreView(FaceletViewDeclarationLanguage.java:1464)
    at org.apache.myfaces.application.ViewHandlerImpl.restoreView(ViewHandlerImpl.java:279)
    at org.apache.myfaces.lifecycle.RestoreViewExecutor.execute(RestoreViewExecutor.java:123)
    at org.apache.myfaces.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.java:171)
    ... 32 more
Caused by: java.lang.InstantiationException: org.primefaces.component.resetinput.ResetInputActionListener
    at java.lang.J9VMInternals.newInstanceImpl(Native Method)
    at java.lang.Class.newInstance(Class.java:1345)
    at javax.faces.component.UIComponentBase.restoreAttachedState(UIComponentBase.java:1599)
    ... 48 more
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1 回答 1

0

Primefaces 3.5 中的p:resetInput有问题（从 4.0 更正），它缺少无参数构造函数。

请改用Omnifaces ResetInputAjaxActionListener，或者定义一个自定义的 resetInput 方法，该方法重用 Primefaces 代码并从您的操作中调用它：

public static void resetInputs(String targetIds) {
    ActionEvent event = new ActionEvent(Faces.getViewRoot());
    ResetInputActionListener reset = new ResetInputActionListener(Components.createValueExpression(targetIds, String.class));
    reset.processAction(event);
}

注意：覆盖 ResetInputActionListener 并添加缺少的构造函数不起作用，因为包含的组件未正确恢复。

于 2016-10-03T17:21:32.913 回答