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我尝试了下面的代码来阅读 pdf ：

val byteArrayOutPutStream: ByteArrayOutputStream = new ByteArrayOutputStream
    val file = new File(path + name)
    val inputStream = new FileInputStream(file)
    val document = new PDFDocumentReader(inputStream)
    var result: List[BufferedImage] = Nil
    val numPgs = document.getNumberOfPages

    for (i <- 0 until numPgs) {
      val pageDetail = new PageDetail("", "", i, "")
      val resourceDetails = document.getPageAsImage(pageDetail)

      val image = ImageIO.read(new ByteArrayInputStream(resourceDetails.getBytes()))
      result ::= image
    }

但是在特定的pdf中，我收到以下错误：

Oct 24, 2013 10:48:01 AM org.apache.pdfbox.pdmodel.font.PDTrueTypeFont getawtFont
INFO: Can't read the embedded font ESNOYH+Calibri-Bold
Oct 24, 2013 10:48:01 AM org.apache.pdfbox.util.PDFStreamEngine processOperator
WARNING: java.lang.NullPointerException
java.lang.NullPointerException
    at org.apache.pdfbox.pdmodel.font.PDTrueTypeFont.getawtFont(PDTrueTypeFont.java:427)
    at org.apache.pdfbox.pdmodel.font.PDSimpleFont.drawString(PDSimpleFont.java:97)
    at org.apache.pdfbox.pdfviewer.PageDrawer.processTextPosition(PageDrawer.java:190)
    at org.apache.pdfbox.util.PDFStreamEngine.processEncodedText(PDFStreamEngine.java:494)
    at org.apache.pdfbox.util.operator.ShowTextGlyph.process(ShowTextGlyph.java:62)
    at org.apache.pdfbox.util.PDFStreamEngine.processOperator(PDFStreamEngine.java:551)
    at org.apache.pdfbox.util.PDFStreamEngine.processSubStream(PDFStreamEngine.java:274)
    at org.apache.pdfbox.util.PDFStreamEngine.processSubStream(PDFStreamEngine.java:251)
    at org.apache.pdfbox.util.PDFStreamEngine.processStream(PDFStreamEngine.java:225)
    at org.apache.pdfbox.pdfviewer.PageDrawer.drawPage(PageDrawer.java:107)
    at org.apache.pdfbox.pdmodel.PDPage.convertToImage(PDPage.java:722)
    at org.apache.pdfbox.pdmodel.PDPage.convertToImage(PDPage.java:693)
    at org.dopdf.document.read.pdf.PDFPage.asImage(PDFPage.java:59)

我该如何解决这个问题？

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1 回答 1

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显然这是一个已知问题PDFBOX-490: Pdf Printing of text from embedded fonts已修复。但是我认为尚未发布的固定版本 2.0.0。

于 2013-10-24T06:51:52.073 回答