Richfaces fileuploader nullpointer firefox

问题

With the introduction of Firefox 62 my existing RichFaces fileuploader is suddenly throwing null pointers upon trying to decode the uploaded file. This is using Richfaces 3.3.3 on a JBoss 5.1 environment. I've tried uploading different image types to no avail. It's also to be noted that this issue only occurs on Firefox 62 and later all other browsers are working fine.

Stacktrace:

Caused by: java.lang.NullPointerException
at org.richfaces.renderkit.FileUploadRendererBase.doDecode(FileUploadRendererBase.java:139)
at org.ajax4jsf.renderkit.RendererBase.decode(RendererBase.java:75)
at javax.faces.component.UIComponentBase.decode(UIComponentBase.java:789)
at javax.faces.component.UIInput.decode(UIInput.java:725)
at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1031)
at javax.faces.component.UIInput.processDecodes(UIInput.java:639)
at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1026)
at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1026)
at javax.faces.component.UIForm.processDecodes(UIForm.java:209)
at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1026)
at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1026)
at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1026)
at javax.faces.component.UIInput.processDecodes(UIInput.java:639)
at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1026)
at org.ajax4jsf.component.AjaxViewRoot$1.invokeContextCallback(AjaxViewRoot.java:400)
at org.ajax4jsf.component.AjaxViewRoot.processPhase(AjaxViewRoot.java:240)
at org.ajax4jsf.component.AjaxViewRoot.processDecodes(AjaxViewRoot.java:417)
at com.sun.faces.lifecycle.ApplyRequestValuesPhase.execute(ApplyRequestValuesPhase.java:78)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:265)

Fileuploader xhtml:

<rich:fileUpload fileUploadListener="#{manageAttachmentContentItemAction.listener}"
maxFilesQuantity="1" 
id="upload" immediateUpload="true"
uploadControlLabel="#{messagesAction.getMessage('manage.content.item.action.upload.add_label')}" addControlLabel="#{messagesAction.getMessage('manage.content.item.action.upload.add_label')}"
progressLabel="#{messagesAction.getMessage('manage.content.item.action.upload.progress_label')}" 
disabled="#{manageAttachmentContentItemAction.previewItem != null}" 
listHeight="60px" listWidth="350px"
allowFlash="false" required="true" noDuplicate="true">
<a4j:support  event="onuploadcomplete" reRender="image_preview,uploadFunction" />
<a4j:support  event="onerror" action="#{manageAttachmentContentItemAction.onErrorOccurred}" reRender="uploadFunction" />
<a4j:support  event="ontyperejected" action="#{manageAttachmentContentItemAction.onTypeRejected}" reRender="uploadFunction" />
<a4j:support  event="onsizerejected" action="#{manageAttachmentContentItemAction.onFileSizeRejected}" reRender="uploadFunction"  />

Any hints would be greatly appreciated

回答1:

There is a work around to this problem, we can surround the code throwing this exception by try/catch and things will work fine. I have already tried this and it's working fine.

回答2:

You can works with NPE something like this.

1) Override the FileUploadRenderer

public class CustomFileUploadRenderer extends FileUploadRenderer {

@Override
protected void doDecode(FacesContext context, UIComponent component) {
    try {
        super.doDecode(context, component);
    } catch (NullPointerException e) {
        LOGGER.info("double decode error ignored", e);
    }
}

2) add custom class to the faces-config.xml

    <render-kit>
     <renderer>
          <component-family>org.richfaces.component.FileUpload</component-family>
          <renderer-type>org.richfaces.renderkit.html.FileUploadRenderer</renderer-type>
          <renderer-class>com.nnn.web.jsf.component.CustomFileUploadRenderer</renderer-class>
     </renderer>
</render-kit>

It works for me.

P/s I`m not sure, but this problem going from the issue https://bugzilla.mozilla.org/show_bug.cgi?id=583351

来源：https://stackoverflow.com/questions/52742539/richfaces-fileuploader-nullpointer-firefox

标签

java

firefox

jboss

richfaces