错误“'java.io.File'的类型初始值设定项引发了异常。”

Question

我正在尝试使用VB.NET将XSL-FO转换为PDF，我正在使用AppacheFOP.NET将XSL-FO转换为PDF，但这会引发错误：

  

“ java.io.File”的类型初始值设定项引发了异常。

自从我放置网站池应用程序v4.5 / CLR v4以来出现此错误。

我的代码：

Private Function GeneratePDF(ByVal streamFO As IO.Stream, ByVal pdfFile As String) As Boolean

        'OLD Dim streamFO As java.io.FileInputStream = New java.io.FileInputStream(foFile)
        Dim memStreamFo As ApacheFop.Net.tools.DotNetInputStream = New ApacheFop.Net.tools.DotNetInputStream(streamFO)

        Dim src As org.xml.sax.InputSource = New org.xml.sax.InputSource(memStreamFo)

        Dim streamOut As java.io.FileOutputStream = New java.io.FileOutputStream(pdfFile)
        Dim oDriver As org.apache.fop.apps.Driver = New org.apache.fop.apps.Driver(src, streamOut)

        oDriver.setRenderer(org.apache.fop.apps.Driver.RENDER_PDF)
        Try
            oDriver.run()
            BCreated = True
        Catch ex As Exception
            BCreated = False

        Finally
            streamOut.close()
            streamFO.close()
            oDriver.reset()
            GC.Collect()

        End Try

    End Function

我需要使用FOP，因为我所有的xsl已经完成，所以如何在框架4.5中使用该.dll？