File upload 覆盖文件上载控件的上载功能

File upload 覆盖文件上载控件的上载功能,file-upload,xpages,File Upload,Xpages,我想覆盖文件上载控件的上载功能,以便添加我需要的功能。我正在尝试将以下链接中的代码改编为我的案例 通过将第二个参数的类型更改为com.ibm.xsp.component.xp.XSPFileUpload,即: 以及MethodBinding mBinding中的代码,并使用我的文件上载控件的名称,即: var mBinding = facesContext.getApplication().createMethodBinding("#{javascript:print('Uploaded')

我想覆盖文件上载控件的上载功能,以便添加我需要的功能。我正在尝试将以下链接中的代码改编为我的案例

通过将第二个参数的类型更改为com.ibm.xsp.component.xp.XSPFileUpload,即:

以及MethodBinding mBinding中的代码,并使用我的文件上载控件的名称,即:

 var mBinding = facesContext.getApplication().createMethodBinding("#{javascript:print('Uploaded');}", null );
overrideFileDownloadAction( getComponent( 'fileUpload1' ) );
不幸的是,出现了javax.faces.FacesException

有人能帮我修改这段代码,以便在用户上传文件时打印这条消息吗

堆栈跟踪:

javax.faces.FacesException
javax.faces.FacesException.<init>(FacesException.java:97)
com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:86)
com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:210)
com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:96)
com.ibm.xsp.controller.FacesControllerImpl.execute(FacesControllerImpl.java:250)
com.ibm.xsp.webapp.FacesServlet.serviceView(FacesServlet.java:209)
com.ibm.xsp.webapp.FacesServletEx.serviceView(FacesServletEx.java:204)
com.ibm.xsp.webapp.FacesServlet.service(FacesServlet.java:160)
com.ibm.xsp.webapp.FacesServletEx.service(FacesServletEx.java:138)
com.ibm.xsp.webapp.DesignerFacesServlet.service(DesignerFacesServlet.java:103)
com.ibm.designer.runtime.domino.adapter.ComponentModule.invokeServlet(ComponentModule.java:576)
com.ibm.domino.xsp.module.nsf.NSFComponentModule.invokeServlet(NSFComponentModule.java:1281)
com.ibm.designer.runtime.domino.adapter.ComponentModule$AdapterInvoker.invokeServlet(ComponentModule.java:847)
com.ibm.designer.runtime.domino.adapter.ComponentModule$ServletInvoker.doService(ComponentModule.java:796)
com.ibm.designer.runtime.domino.adapter.ComponentModule.doService(ComponentModule.java:565)
com.ibm.domino.xsp.module.nsf.NSFComponentModule.doService(NSFComponentModule.java:1265)
com.ibm.domino.xsp.module.nsf.NSFService.doServiceInternal(NSFService.java:653)
com.ibm.domino.xsp.module.nsf.NSFService.doService(NSFService.java:476)
com.ibm.designer.runtime.domino.adapter.LCDEnvironment.doService(LCDEnvironment.java:341)
com.ibm.designer.runtime.domino.adapter.LCDEnvironment.service(LCDEnvironment.java:297)
com.ibm.domino.xsp.bridge.http.engine.XspCmdManager.service(XspCmdManager.java:272)

java.lang.NullPointerException
com.ibm.xsp.actions.ActionGroup.invoke(ActionGroup.java:135)
com.ibm.xsp.actions.ActionGroup.invoke(ActionGroup.java:135)
com.ibm.xsp.application.ActionListenerImpl.processAction(ActionListenerImpl.java:60)
javax.faces.component.UICommand.broadcast(UICommand.java:324)
com.ibm.xsp.component.UIEventHandler.broadcast(UIEventHandler.java:366)
com.ibm.xsp.component.UIViewRootEx.broadcast(UIViewRootEx.java:1535)
javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:307)
javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:428)
com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:94)
com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:210)
com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:96)
com.ibm.xsp.controller.FacesControllerImpl.execute(FacesControllerImpl.java:250)
com.ibm.xsp.webapp.FacesServlet.serviceView(FacesServlet.java:209)
com.ibm.xsp.webapp.FacesServletEx.serviceView(FacesServletEx.java:204)
com.ibm.xsp.webapp.FacesServlet.service(FacesServlet.java:160)
com.ibm.xsp.webapp.FacesServletEx.service(FacesServletEx.java:138)
com.ibm.xsp.webapp.DesignerFacesServlet.service(DesignerFacesServlet.java:103)
com.ibm.designer.runtime.domino.adapter.ComponentModule.invokeServlet(ComponentModule.java:576)
com.ibm.domino.xsp.module.nsf.NSFComponentModule.invokeServlet(NSFComponentModule.java:1281)
com.ibm.designer.runtime.domino.adapter.ComponentModule$AdapterInvoker.invokeServlet(ComponentModule.java:847)
com.ibm.designer.runtime.domino.adapter.ComponentModule$ServletInvoker.doService(ComponentModule.java:796)
com.ibm.designer.runtime.domino.adapter.ComponentModule.doService(ComponentModule.java:565)
com.ibm.domino.xsp.module.nsf.NSFComponentModule.doService(NSFComponentModule.java:1265)
com.ibm.domino.xsp.module.nsf.NSFService.doServiceInternal(NSFService.java:653)
com.ibm.domino.xsp.module.nsf.NSFService.doService(NSFService.java:476)
com.ibm.designer.runtime.domino.adapter.LCDEnvironment.doService(LCDEnvironment.java:341)
com.ibm.designer.runtime.domino.adapter.LCDEnvironment.service(LCDEnvironment.java:297)
com.ibm.domino.xsp.bridge.http.engine.XspCmdManager.service(XspCmdManager.java:272)
javax.faces.FacesException
faces.FacesException.(FacesException.java:97)
com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:86)
com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:210)
com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:96)
com.ibm.xsp.controller.FacesControllerImpl.execute(FacesControllerImpl.java:250)
com.ibm.xsp.webapp.FacesServlet.serviceView(FacesServlet.java:209)
com.ibm.xsp.webapp.FacesServletEx.serviceView(FacesServletEx.java:204)
com.ibm.xsp.webapp.FacesServlet.service(FacesServlet.java:160)
com.ibm.xsp.webapp.FacesServletEx.service(FacesServletEx.java:138)
com.ibm.xsp.webapp.DesignerFacesServlet.service(DesignerFacesServlet.java:103)
com.ibm.designer.runtime.domino.adapter.ComponentModule.invokeServlet(ComponentModule.java:576)
com.ibm.domino.xsp.module.nsf.NSFComponentModule.invokeServlet(NSFComponentModule.java:1281)
com.ibm.designer.runtime.domino.adapter.ComponentModule$AdapterInvoker.invokeServlet(ComponentModule.java:847)
com.ibm.designer.runtime.domino.adapter.ComponentModule$ServletInvoker.doService(ComponentModule.java:796)
com.ibm.designer.runtime.domino.adapter.ComponentModule.doService(ComponentModule.java:565)
com.ibm.domino.xsp.module.nsf.NSFComponentModule.doService(NSFComponentModule.java:1265)
com.ibm.domino.xsp.module.nsf.NSFService.doServiceInternal(NSFService.java:653)
com.ibm.domino.xsp.module.nsf.NSFService.doService(NSFService.java:476)
com.ibm.designer.runtime.domino.adapter.LCDEnvironment.doService(LCDEnvironment.java:341)
com.ibm.designer.runtime.domino.adapter.LCDEnvironment.service(LCDEnvironment.java:297)
com.ibm.domino.xsp.bridge.http.engine.XspCmdManager.service(XspCmdManager.java:272)
java.lang.NullPointerException
com.ibm.xsp.actions.ActionGroup.invoke(ActionGroup.java:135)
com.ibm.xsp.actions.ActionGroup.invoke(ActionGroup.java:135)
com.ibm.xsp.application.ActionListenerImpl.processAction(ActionListenerImpl.java:60)
javax.faces.component.UICommand.broadcast(UICommand.java:324)
com.ibm.xsp.component.UIEventHandler.broadcast(UIEventHandler.java:366)
com.ibm.xsp.component.UIViewRootEx.broadcast(UIViewRootEx.java:1535)
javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:307)
javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:428)
com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:94)
com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:210)
com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:96)
com.ibm.xsp.controller.FacesControllerImpl.execute(FacesControllerImpl.java:250)
com.ibm.xsp.webapp.FacesServlet.serviceView(FacesServlet.java:209)
com.ibm.xsp.webapp.FacesServletEx.serviceView(FacesServletEx.java:204)
com.ibm.xsp.webapp.FacesServlet.service(FacesServlet.java:160)
com.ibm.xsp.webapp.FacesServletEx.service(FacesServletEx.java:138)
com.ibm.xsp.webapp.DesignerFacesServlet.service(DesignerFacesServlet.java:103)
com.ibm.designer.runtime.domino.adapter.ComponentModule.invokeServlet(ComponentModule.java:576)
com.ibm.domino.xsp.module.nsf.NSFComponentModule.invokeServlet(NSFComponentModule.java:1281)
com.ibm.designer.runtime.domino.adapter.ComponentModule$AdapterInvoker.invokeServlet(ComponentModule.java:847)
com.ibm.designer.runtime.domino.adapter.ComponentModule$ServletInvoker.doService(ComponentModule.java:796)
com.ibm.designer.runtime.domino.adapter.ComponentModule.doService(ComponentModule.java:565)
com.ibm.domino.xsp.module.nsf.NSFComponentModule.doService(NSFComponentModule.java:1265)
com.ibm.domino.xsp.module.nsf.NSFService.doServiceInternal(NSFService.java:653)
com.ibm.domino.xsp.module.nsf.NSFService.doService(NSFService.java:476)
com.ibm.designer.runtime.domino.adapter.LCDEnvironment.doService(LCDEnvironment.java:341)
com.ibm.designer.runtime.domino.adapter.LCDEnvironment.service(LCDEnvironment.java:297)
com.ibm.domino.xsp.bridge.http.engine.XspCmdManager.service(XspCmdManager.java:272)
我还注意到,如果我向事件(例如onChange)添加一个脚本,以便创建一个事件处理程序,则不会发生异常。所以我认为抛出异常是因为没有事件处理程序,这会导致空指针。现在,我已经在onChange事件中添加了所需的功能,这是可以的,但是如果有人能告诉我是否有方法覆盖它,那就太好了


提前谢谢你

你想做什么?我认为这个代码段是不可能的(它覆盖了下载链接的一个事件处理程序,该链接仅可用于上传控件)


也许这段代码可以帮助您:

请包含您得到的异常堆栈跟踪…为什么不使用onChange?它起作用了。无论如何,为了上传文件,您需要调用完全刷新。是的,这就是我最终得到的解决方案。起初,我找到了关于文件下载的片段,并尝试使用这种方法。谢谢你的评论!非常感谢。我来看看。我还编辑了这个问题,试图澄清它。我只是想知道是否有一种方法可以像代码片段中显示的fileDownload的delete函数那样覆盖upload函数。@kmak:upload控件没有可以修改的事件/函数。我将所需的功能添加到onChange事件中,效果很好,但很高兴知道第一种方法失败的原因。谢谢你
javax.faces.FacesException
javax.faces.FacesException.<init>(FacesException.java:97)
com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:86)
com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:210)
com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:96)
com.ibm.xsp.controller.FacesControllerImpl.execute(FacesControllerImpl.java:250)
com.ibm.xsp.webapp.FacesServlet.serviceView(FacesServlet.java:209)
com.ibm.xsp.webapp.FacesServletEx.serviceView(FacesServletEx.java:204)
com.ibm.xsp.webapp.FacesServlet.service(FacesServlet.java:160)
com.ibm.xsp.webapp.FacesServletEx.service(FacesServletEx.java:138)
com.ibm.xsp.webapp.DesignerFacesServlet.service(DesignerFacesServlet.java:103)
com.ibm.designer.runtime.domino.adapter.ComponentModule.invokeServlet(ComponentModule.java:576)
com.ibm.domino.xsp.module.nsf.NSFComponentModule.invokeServlet(NSFComponentModule.java:1281)
com.ibm.designer.runtime.domino.adapter.ComponentModule$AdapterInvoker.invokeServlet(ComponentModule.java:847)
com.ibm.designer.runtime.domino.adapter.ComponentModule$ServletInvoker.doService(ComponentModule.java:796)
com.ibm.designer.runtime.domino.adapter.ComponentModule.doService(ComponentModule.java:565)
com.ibm.domino.xsp.module.nsf.NSFComponentModule.doService(NSFComponentModule.java:1265)
com.ibm.domino.xsp.module.nsf.NSFService.doServiceInternal(NSFService.java:653)
com.ibm.domino.xsp.module.nsf.NSFService.doService(NSFService.java:476)
com.ibm.designer.runtime.domino.adapter.LCDEnvironment.doService(LCDEnvironment.java:341)
com.ibm.designer.runtime.domino.adapter.LCDEnvironment.service(LCDEnvironment.java:297)
com.ibm.domino.xsp.bridge.http.engine.XspCmdManager.service(XspCmdManager.java:272)

java.lang.NullPointerException
com.ibm.xsp.actions.ActionGroup.invoke(ActionGroup.java:135)
com.ibm.xsp.actions.ActionGroup.invoke(ActionGroup.java:135)
com.ibm.xsp.application.ActionListenerImpl.processAction(ActionListenerImpl.java:60)
javax.faces.component.UICommand.broadcast(UICommand.java:324)
com.ibm.xsp.component.UIEventHandler.broadcast(UIEventHandler.java:366)
com.ibm.xsp.component.UIViewRootEx.broadcast(UIViewRootEx.java:1535)
javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:307)
javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:428)
com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:94)
com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:210)
com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:96)
com.ibm.xsp.controller.FacesControllerImpl.execute(FacesControllerImpl.java:250)
com.ibm.xsp.webapp.FacesServlet.serviceView(FacesServlet.java:209)
com.ibm.xsp.webapp.FacesServletEx.serviceView(FacesServletEx.java:204)
com.ibm.xsp.webapp.FacesServlet.service(FacesServlet.java:160)
com.ibm.xsp.webapp.FacesServletEx.service(FacesServletEx.java:138)
com.ibm.xsp.webapp.DesignerFacesServlet.service(DesignerFacesServlet.java:103)
com.ibm.designer.runtime.domino.adapter.ComponentModule.invokeServlet(ComponentModule.java:576)
com.ibm.domino.xsp.module.nsf.NSFComponentModule.invokeServlet(NSFComponentModule.java:1281)
com.ibm.designer.runtime.domino.adapter.ComponentModule$AdapterInvoker.invokeServlet(ComponentModule.java:847)
com.ibm.designer.runtime.domino.adapter.ComponentModule$ServletInvoker.doService(ComponentModule.java:796)
com.ibm.designer.runtime.domino.adapter.ComponentModule.doService(ComponentModule.java:565)
com.ibm.domino.xsp.module.nsf.NSFComponentModule.doService(NSFComponentModule.java:1265)
com.ibm.domino.xsp.module.nsf.NSFService.doServiceInternal(NSFService.java:653)
com.ibm.domino.xsp.module.nsf.NSFService.doService(NSFService.java:476)
com.ibm.designer.runtime.domino.adapter.LCDEnvironment.doService(LCDEnvironment.java:341)
com.ibm.designer.runtime.domino.adapter.LCDEnvironment.service(LCDEnvironment.java:297)
com.ibm.domino.xsp.bridge.http.engine.XspCmdManager.service(XspCmdManager.java:272)