标题：如何将pdf每一页保存为图片

Dim doc As org.apache.pdfbox.pdmodel.PDDocument = Nothing 'pdf,目录,文件名,文件数,页数

Try

    doc = org.apache.pdfbox.pdmodel.PDDocument.load(Args(0))

    Dim pages = doc.getDocumentCatalog().getAllPages()

    Dim i As Integer = 1

    Dim ii As Integer = 1

    Dim file As String

    For Each page As object In pages

        Dim resources = page.getResources()

        Dim imgs = resources.getImages()

        If imgs IsNot Nothing Then

            For Each key As object In imgs.keySet

                FileSys.CreateDirectory(Args(1))

                imgs.get(key).write2file(Args(1) & Args(2) & i)

                file = file & "|" & Args(1) & Args(2) & i

                file = file.Trim("|")

                i + = 1

                If i >= Args(3) Then

                    Exit For

                End If

            Next

        End If

        ii + = 1

        If ii >= Args(4) Then

            Exit For

        End If

    Next

    Return file

catch ex As exception

    

Finally

    If doc IsNot Nothing Then

        doc.close()

    End If

End Try