我試圖將PDF文件的第一頁轉換爲使用PDFBox的圖像。 當我加載一個大的PDF文件時,我得到一個異常。PDFbox加載大文件
代碼:
PDDocument doc;
try {
InputStream input = new URL("http://www.jewishfederations.org/local_includes/downloads/39497.pdf").openStream();
doc = PDDocument.load(input);
PDPage firstPage = (PDPage) doc.getDocumentCatalog().getAllPages().get(0);
BufferedImage image =firstPage.convertToImage();
File outputfile = new File("image2.png");
ImageIO.write(image, "png", outputfile);
input.close();
doc.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
例外:
org.apache.pdfbox.pdfparser.BaseParser parseCOSStream
WARNING: Specified stream length 72435 is wrong. Fall back to reading stream until 'endstream'.
org.apache.pdfbox.exceptions.WrappedIOException: Could not push back 72435 bytes in order to reparse stream. Try increasing push back buffer using system property org.apache.pdfbox.baseParser.pushBackSize
at org.apache.pdfbox.pdfparser.BaseParser.parseCOSStream(BaseParser.java:554)
at org.apache.pdfbox.pdfparser.PDFParser.parseObject(PDFParser.java:605)
at org.apache.pdfbox.pdfparser.PDFParser.parse(PDFParser.java:194)
at org.apache.pdfbox.pdmodel.PDDocument.load(PDDocument.java:1219)
at org.apache.pdfbox.pdmodel.PDDocument.load(PDDocument.java:1186)
at Worker.main(Worker.java:27)
Caused by: java.io.IOException: Push back buffer is full
at java.io.PushbackInputStream.unread(Unknown Source)
at org.apache.pdfbox.io.PushBackInputStream.unread(PushBackInputStream.java:144)
at org.apache.pdfbox.io.PushBackInputStream.unread(PushBackInputStream.java:133)
at org.apache.pdfbox.pdfparser.BaseParser.parseCOSStream(BaseParser.java:550)
... 5 more
當您增加推回緩衝區大小時會發生什麼? – azurefrog
到目前爲止,我沒有找到如何做到這一點。 – user2958571
你自己的錯誤消息說:'嘗試增加推回緩衝區使用系統屬性org.apache.pdfbox.baseParser.pushBackSize' – azurefrog