使用Apache POI创建Excel工作簿时，Xpages ExtLib对话框出错

使用XPages ExtLib对话框使用Apache POI创建MS Excel时，我收到一个错误“更新某些页面时出错。Node.replaceChild的参数1不是对象”如果从XPage上的按钮执行导出，则导出工作正常。
Domino9.0.1 FP8 请解释一下我在对话框中犯了什么错误？ 谢谢

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当对话框打开时，请怀疑faces上下文响应发生了变化。我对这些练习的长期建议是：创建一个JavaBean，将其添加为托管bean，以完成所有处理并调用类上的方法。灵感来源：谢谢你的建议，开始了我使用JavaBean的道路。

    <?xml version="1.0" encoding="UTF-8"?>
<xp:view
    xmlns:xp="http://www.ibm.com/xsp/core"
    xmlns:xe="http://www.ibm.com/xsp/coreex">
    <xp:this.resources>
        <xp:script
            src="/CreateStream.jss"
            clientSide="false">
        </xp:script>
    </xp:this.resources>
    <xp:table>
        <xp:tr>
            <xp:td>
                <xp:button
                    value="Test Export"
                    id="button1">
                    <xp:eventHandler
                        event="onclick"
                        submit="true"
                        refreshMode="complete">
                        <xp:this.action><![CDATA[#{javascript:CreateWorkbookStream();}]]></xp:this.action>
                    </xp:eventHandler>
                </xp:button>
            </xp:td>
            <xp:td></xp:td>
        </xp:tr>
        <xp:tr>
            <xp:td>
                <xp:button
                    value="Open Dialog"
                    id="button3">
                <xp:eventHandler
                    event="onclick"
                    submit="false">
                    <xp:this.script><![CDATA[XSP.openDialog("#{id:dialog1}");]]></xp:this.script>
                </xp:eventHandler></xp:button></xp:td>
            <xp:td></xp:td>
        </xp:tr>
    </xp:table>
    <xp:br></xp:br>
    <xe:dialog id="dialog1">
        <xp:panel>
            <xp:table>
                <xp:tr>
                    <xp:td>
                        <xp:button
                            value="Test Export"
                            id="button2">
                            <xp:eventHandler
                                event="onclick"
                                submit="true"
                                refreshMode="complete">
                                <xp:this.action><![CDATA[#{javascript:CreateWorkbookStream();}]]></xp:this.action>
                            </xp:eventHandler>
                        </xp:button>
                    </xp:td>
                    <xp:td></xp:td>
                </xp:tr>
                <xp:tr>
                    <xp:td>
                        <xp:button
                            value="Close Dialog"
                            id="button4">
                            <xp:eventHandler
                                event="onclick"
                                submit="false">
                                <xp:this.script><![CDATA[XSP.closeDialog("#{id:dialog1}");]]></xp:this.script>
                            </xp:eventHandler>
                        </xp:button>
                    </xp:td>
                    <xp:td></xp:td>
                </xp:tr>
            </xp:table>
        </xp:panel>
    </xe:dialog>
</xp:view>

    function CreateWorkbookStream(){
    importPackage(java.lang);
    importPackage(org.apache.poi.hssf.usermodel);
    importPackage(org.apache.poi.hssf.util);

    var sheetName = "sheet1";
    //Create a new workbook object from the poi library
    var wb:HSSFWorkbook = new HSSFWorkbook();
    //Create additional sheets using same sytnax and different sheet name
    var sheet1:HSSFSheet = wb.createSheet(sheetName);

    //Create row
    var row:HSSFRow = sheet1.createRow(0);
    var cell:HSSFCell = row.createCell((java.lang.Integer)(0));

    cell.setCellValue("One");

    //Create file name
    var workbookName = "exptest"
    var fileName = workbookName+".xls";

    //Write output
    // The Faces Context global object provides access to the servlet environment via the external content
    var extCont = facesContext.getExternalContext(); 
    // The servlet's response object provides control to the response object
    var pageResponse = extCont.getResponse();
    //Get the output stream to stream binary data
    var pageOutput = pageResponse.getOutputStream();

    // Set the content type and headers
    pageResponse.setContentType("application/x-ms-excel");
    pageResponse.setHeader("Cache-Control", "no-cache");
    pageResponse.setHeader("Content-Disposition","inline; filename=" + fileName);
    //Write the output, flush the buffer and close the stream
    wb.write(pageOutput);
    pageOutput.flush();
    pageOutput.close();

    //  Terminate the request processing lifecycle.
    facesContext.responseComplete();
}