在 Oracle ADF 中上传文件期间,无法在 Inputfile 的 valuechangelistener 外部访问值

Value not accessible outside valuechangelistener of Inputfile during fileupload in Oracle ADF

我正在 Oracle ADF 中创建一个表单,我在其中使用输入文件将文件上传到数据库。当我 select 通过输入文件值接收文件时,在 ValueChangeListener 中收到但如果我尝试通过 public 变量或 getter 、 setter 函数访问 valuchangelistener 函数之外的值收到的值为空。

// Value Change Listener for inputFileComponent
    public void onFileUploadVCL(ValueChangeEvent valueChangeEvent) {
        file=(UploadedFile)valueChangeEvent.getNewValue();
        // get the file name
        uploadedFileName=file.getFilename();
        // get the mime type
        contentType = file.getContentType();
        // get blob
        blob=getBlob(file);      
    }

  //submit function where i need to use values

   public void onSubmit(ActionEvent actionEvent) {
        // Add event code here...
        System.out.println("String:"+inEmpCode+"#"+outDesignation+"#"+inFromDate+"#"+inToDate+"#"+uploadedFileName+"$$"+blob);
        insertRow(inEmpCode,inFromDate,inToDate,uploadedFileName,blob);               
    }

// 从它的角度看代码

                            <af:selectOneChoice value="#{AddReviewBean.inEmpCode}"
                                                label="#{bindings.Empcode.label}"
                                                required="#{bindings.Empcode.hints.mandatory}"
                                                shortDesc="#{bindings.Empcode.hints.tooltip}" id="soc1"
                                                valueChangeListener="#{AddReviewBean.onSelectionChange}" autoSubmit="true">
                                <f:selectItems value="#{bindings.Empcode.items}" id="si1"/>
                                <f:validator binding="#{bindings.Empcode.validator}"/>
                            </af:selectOneChoice>

                            <p xmlns="http://www.w3.org/1999/xhtml">
                <af:inputText value="#{AddReviewBean.outDesignation}" readOnly="true" label="Designation" id="txtDesignation"
                              partialTriggers="soc1"/>
            </p>
             <p xmlns="http://www.w3.org/1999/xhtml">
                <af:inputDate label="From" id="dateTxtFrom" required="true" value="#{AddReviewBean.inFromDate}"/>
            </p>
            <p xmlns="http://www.w3.org/1999/xhtml">
                <af:inputDate label="To" id="dateTxtTo" required="true" value="#{AddReviewBean.inToDate}"/>
            </p>

            <p xmlns="http://www.w3.org/1999/xhtml">
            <af:inputFile label="Upload Review" maximumFiles="1" autoSubmit="true" id="inFileReview"
                          valueChangeListener="#{AddReviewBean.onFileUploadVCL}" value="#{AddReviewBean.file}"/>
            </p>
            <p xmlns="http://www.w3.org/1999/xhtml">

                <af:button partialSubmit="true" text="Submit" id="btnSubmit"
                           actionListener="#{AddReviewBean.onSubmit}"/>
            </p>

        </af:panelFormLayout>

将您的变量声明为静态变量,它应该可以工作。

如果您在 pageFlowScope 或 sessionScope 中声明托管 bean(如果您认为它应该在整个用户会话中存活)并将变量设为私有(非静态),则该变量将保留在那里。