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我正在嘗試使用java.awt.print包打印PDF文檔。我這樣做是通過創建一個Printable對象來完成文件的簡短轉換(前一種技術是從不同的主題中導出的)。PDF Renderer導致零分差
private static void printDocument(File finalFile, PrintService printer, String name) throws PrinterException {
System.out.println(String.format("Starting %s document", name));
FileInputStream fileInputStream = null;
try {
fileInputStream = new FileInputStream(finalFile);
byte[] pdfContent = new byte[fileInputStream.available()];
fileInputStream.read(pdfContent, 0, fileInputStream.available());
ByteBuffer buffer = ByteBuffer.wrap(pdfContent);
final PDFFile pdfFile = new PDFFile(buffer);
//Create Printable object in preparation for printing
Printable printable = new Printable() {
public int print(Graphics graphics, PageFormat pageFormat, int pageIndex) throws PrinterException {
int pagenum = pageIndex + 1;
if ((pagenum >= 1) && (pagenum <= pdfFile.getNumPages())) {
Graphics2D graphics2D = (Graphics2D) graphics;
PDFPage page = pdfFile.getPage(pagenum);
Rectangle imageArea = new Rectangle((int) pageFormat.getImageableX(), (int) pageFormat.getImageableY(),
(int) pageFormat.getImageableWidth(), (int) pageFormat.getImageableHeight());
graphics2D.translate(0, 0);
PDFRenderer pdfRenderer = new PDFRenderer(page, graphics2D, imageArea, null, null);
try {
page.waitForFinish();
pdfRenderer.run();
}
catch (InterruptedException e) {
e.printStackTrace();
throw new PrinterException("Oh noes!");
}
return PAGE_EXISTS;
}
else {
return NO_SUCH_PAGE;
}
}
};
PrinterJob printJob = PrinterJob.getPrinterJob();
printJob.setPrintService(printer);
PageFormat pageFormat = printJob.defaultPage();
Book book = new Book();
book.append(printable, pageFormat, pdfFile.getNumPages());
printJob.setPageable(book);
Paper paper = new Paper();
paper.setImageableArea(0, 0, paper.getWidth(), paper.getHeight());
pageFormat.setPaper(paper);
PrintRequestAttributeSet pset = new HashPrintRequestAttributeSet();
printJob.setJobName(finalFile.getName() +
"|" + String.valueOf(1) +
"|" + ("T"));
printJob.print(pset);
}
catch (Exception e) {
e.printStackTrace();
throw new PrinterException();
}
finally {
if (fileInputStream != null) {
try {
fileInputStream.close();
}
catch (IOException e) {
e.printStackTrace();
}
}
}
System.out.println(String.format("Finished %s document", name));
}
某些特定情況下的PDF文件的沒有反應良好這個轉換過程中,沒有對pdfRenderer.run();符合該堆棧跟蹤:
java.lang.ArithmeticException:/by zero
at com.sun.pdfview.pattern.PatternType1$Type1PaintContext.getRaster(PatternType1.java:354)
at sun.java2d.pipe.AlphaPaintPipe.renderPathTile(AlphaPaintPipe.java:106)
at sun.java2d.pipe.DuctusShapeRenderer.renderTiles(DuctusShapeRenderer.java:147)
at sun.java2d.pipe.DuctusShapeRenderer.renderPath(DuctusShapeRenderer.java:100)
at sun.java2d.pipe.DuctusShapeRenderer.fill(DuctusShapeRenderer.java:50)
at sun.java2d.pipe.PixelToParallelogramConverter.fill(PixelToParallelogramConverter.java:146)
at sun.java2d.pipe.ValidatePipe.fill(ValidatePipe.java:142)
at sun.java2d.SunGraphics2D.fill(SunGraphics2D.java:2376)
at sun.print.ProxyGraphics2D.fill(ProxyGraphics2D.java:1381)
at com.sun.pdfview.pattern.PatternType1$TilingPatternPaint.fill(PatternType1.java:278)
at com.sun.pdfview.PDFRenderer.fill(PDFRenderer.java:261)
at com.sun.pdfview.PDFShapeCmd.execute(PDFShapeCmd.java:77)
at com.sun.pdfview.PDFRenderer.iterate(PDFRenderer.java:570)
at com.sun.pdfview.BaseWatchable.run(BaseWatchable.java:101)
at **MYFILEHERE**
這在一個文件中,只有一半的打印,停止甚至跨越文本行的中心導致文件中途失敗,結果硬是(和有些幽默)。
這個錯誤的原因是什麼?它在渲染過程中處於如此低級別,處理個人形狀操作,我不得不相信它是我無法控制的。 有沒有辦法,我可以讓我的過程繞過損壞的數據,它可能正在努力並繼續呈現文件完整?
什麼這裏發生了什麼? 'PatternType1.java:278'和'PDFRenderer.java:261' – Brian
獲取更多數據的建議:在您的代碼中捕獲異常。從catch塊中,將緩衝區的內容轉儲到磁盤文件,然後在pdf閱讀程序中打開它。另外,你確定你總是閱讀整個輸入文件嗎? –
@布萊恩我不認爲我可以知道。這是com.sun代碼。 –