af:inputFile 没有调用 valueChangeListener 方法 [英] af:inputFile is not calling valueChangeListener method

问题描述

总结问题

我正在尝试将图像上传到数据库中的 blob，并且一直在关注各种在线博客以实现此目的.

I'm trying to upload an image to a blob in the database and have been following various blogs online to do so.

提供背景信息，包括您已经尝试过的内容

我尝试将输入文件包含在表单中，但收到警告:-每页仅支持一个 af:form.此警告稍后升级为服务器异常错误，我无法进入该页面.

I've tried enclosing the input file on a form but I get the warning:- "Only one af:form is supported per page. This warning later escalates to a server exception error and I can't enter said page.

显示一些代码

 <af:panelFormLayout id="pfl1">
      <f:facet name="footer"/>
      <af:form id="f1" usesUpload="true">
        <af:inputFile label="Label 1" id="if1"  value="#NewUploadImageBean.file}"
                      valueChangeListener="#{NewUploadImageBean.upLoadValueChangeListener}"/>
      </af:form>
    </af:panelFormLayout>

我在整个页面中只有这个表单.

I only have this one form in the entire page.

描述预期和实际结果，包括任何错误消息

希望 valueChangeListner 调用我的方法.目前我得到ADF_FACES-60097 错误，然后转换为:java.lang.IllegalStateException:ADF_FACES-30124:在 viewId 上检测到多个表单:/test_pages/employement.jsf.富客户端目前在处理多种表单方面存在一些限制.

Would like to the valueChangeListner to call my method. Currently I get the ADF_FACES-60097 error which then translates to : java.lang.IllegalStateException: ADF_FACES-30124:Multiple forms detected on viewId: /test_pages/employement.jsf. Rich client currently has some limitations in dealing with multiple forms.

推荐答案

如何修复 ADF_FACES-30124:在 viewId 上检测到多个表单?

为此，请删除 jsf 视图中的所有 af:forms，特别是包含 inputFile 的那个，并在最高视图标记级别仅添加一个 af:form useupload="true" :

To do so remove all the af:forms inside your jsf view expecially the one containing your inputFile and add only one af:form useupload="true" at the highest view tag level :

<af:document > 
 <af:form usesUpload="true" id="f1">
... ALL YOUR VIEW TAGS ...
</af:form>
</af:document>

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