我无法使用Itext

时间：2018-06-14 06:46:53

标签： java itext

Code的功能非常简单，需要您使用Itext在现有PDF上标记内容。 Input是InputStream，并为Servlet响应返回ByteArrayOutputStream。

不知何故，它返回整个PDF而不标记任何内容并且不返回错误/异常。代码曾经工作当这个函数是servlet的一部分时，但它确实不工作，因为它被转移到一个新类（现在在构造函数中初始化了Watermark属性） ）。

    public ByteArrayOutputStream watermarkPDFDocument (InputStream WatermarkedFileInputStream) throws DocumentException {
    ByteArrayOutputStream bytearrayos =new ByteArrayOutputStream();
    try
    {   
        PdfReader reader = new PdfReader(WatermarkedFileInputStream);
        PdfStamper stamper = new PdfStamper(reader, bytearrayos);
        PdfContentByte PdfContentOver; //PDFContent to get page data and to splash over pages. 
        Rectangle pagesize;
        float WatermarkCenterX, WatermarkCenterY;

        // loop over every page
        int TotalNoOfPages = reader.getNumberOfPages();
        for (int i = 1; i <= TotalNoOfPages; i++) {
            // get page size and position
            pagesize = reader.getPageSizeWithRotation(i);
            WatermarkCenterX = (pagesize.getLeft() + pagesize.getRight()) / 2;
            WatermarkCenterY = (pagesize.getTop() + pagesize.getBottom()) / 2;
            LOG.debug("Center of page  - [" + WatermarkCenterX + " , " + WatermarkCenterY+"]");

            //Initializing PageNo Phrase for Footer
            FooterPageNoPhrase = new Phrase("Page " + String.valueOf(i) + " of " + String.valueOf(TotalNoOfPages),FooterFont);

            PdfContentOver = stamper.getOverContent(i);
            PdfContentOver.saveState();

            //Setting Watermark opacity
            PdfGState CenterState = new PdfGState();
            PdfGState FooterState = new PdfGState();
            CenterState.setFillOpacity(CenterFontOpacity);
            FooterState.setFillOpacity(FooterFontOpacity);

            PdfContentOver.setGState(CenterState);//Sets Transparency for Center
            //Watermark at center
            ColumnText.showTextAligned(PdfContentOver, Element.ALIGN_CENTER, CenterPhraseDocState, WatermarkCenterX-(CenterFontSize/2), WatermarkCenterY+(CenterFontSize/2), 45);
            ColumnText.showTextAligned(PdfContentOver, Element.ALIGN_CENTER, CenterPhraseDocLogic, WatermarkCenterX+(CenterFontSize/2), WatermarkCenterY-(CenterFontSize/2), 45);
            LOG.debug("Stamped Center Watermark - " + CenterPhraseDocState + " , " + CenterPhraseDocLogic);
            PdfContentOver.setGState(FooterState); //Sets Transparency for Footer
            //Watermark at Footer Row 1
            ColumnText.showTextAligned(PdfContentOver, Element.ALIGN_LEFT, FooterPhraseDocState, (pagesize.getLeft()+ FooterDistanceFromLeft), (pagesize.getBottom() + FooterRow1Height), 0);
            ColumnText.showTextAligned(PdfContentOver, Element.ALIGN_RIGHT, FooterPhraseDocNumber, (pagesize.getRight()- FooterDistanceFromRight), (pagesize.getBottom() + FooterRow1Height), 0);
            ColumnText.showTextAligned(PdfContentOver, Element.ALIGN_CENTER, FooterPhraseDocName, WatermarkCenterX, (pagesize.getBottom() + FooterRow1Height), 0);
            //Watermark at Footer Row 2
            ColumnText.showTextAligned(PdfContentOver, Element.ALIGN_CENTER, FooterPhraseConfidential, WatermarkCenterX, (pagesize.getBottom() + FooterRow2Height), 0);
            ColumnText.showTextAligned(PdfContentOver, Element.ALIGN_RIGHT, FooterPageNoPhrase, (pagesize.getRight()- FooterDistanceFromRight), (pagesize.getBottom() + FooterRow2Height), 0);
            LOG.debug("Stamped Footer Watermark - " + FooterPhraseDocState + " , " + FooterPhraseDocNumber + " , " + FooterPhraseDocName + " , " + FooterPhraseConfidential);
            PdfContentOver.restoreState();
        }

        stamper.close();
        reader.close();

    }
    catch(IOException e)
    {
        LOG.error("ERROR while retrieving primary content's file  ", e);
    }
    return bytearrayos;


}

当我尝试运行代码时，这是记录器 - Logger Image Link 由于没有捕获Exceptions并且Servlet响应返回从InputStream生成的PDF，并且Itext Phrases返回非空值。我怀疑错误在PDFStates附近或将短语写在文本上，但在盯着它几个小时后，我无法弄清楚出错的地方。

编辑 - 我将无法附加日志文件，因为它包含来自系统其他部分的详细信息。我正在编写代码中的所有日志调试/错误。

2018-06-14 05:28:45,909 INFO [RMI TCP Connection(150)-132.189.104.47] wt.log4j.jmx.LoggerRepositoryMonitor.levelChanged - Logger=com.bsci.plm.watermark.BSCWatermarkFileGeneration, NewLevel=ALL
796: 2018-06-14 05:28:56,702 DEBUG [ajp-bio-8011-exec-2] com.bsci.plm.watermark.BSCWatermarkFileGeneration wcadmin - Font Size for Center Watermark - 30
797: 2018-06-14 05:28:56,702 DEBUG [ajp-bio-8011-exec-2] com.bsci.plm.watermark.BSCWatermarkFileGeneration wcadmin - Font Size for Footer Watermark - 10
798: 2018-06-14 05:28:56,702 DEBUG [ajp-bio-8011-exec-2] com.bsci.plm.watermark.BSCWatermarkFileGeneration wcadmin - RGB for Center Watermark - [255, 0, 0]
799: 2018-06-14 05:28:56,702 DEBUG [ajp-bio-8011-exec-2] com.bsci.plm.watermark.BSCWatermarkFileGeneration wcadmin - RGB for Footer Watermark - [0, 0, 0]
800: 2018-06-14 05:28:56,702 DEBUG [ajp-bio-8011-exec-2] com.bsci.plm.watermark.BSCWatermarkFileGeneration wcadmin - Opacity for Center Watermark - 0.4
801: 2018-06-14 05:28:56,702 DEBUG [ajp-bio-8011-exec-2] com.bsci.plm.watermark.BSCWatermarkFileGeneration wcadmin - Opacity for Footer Watermark - 0.9
802: 2018-06-14 05:28:56,702 DEBUG [ajp-bio-8011-exec-2] com.bsci.plm.watermark.BSCWatermarkFileGeneration wcadmin - Confidential Watermark - Confidential. Unauthorized use is prohibited.
803: 2018-06-14 05:28:56,702 DEBUG [ajp-bio-8011-exec-2] com.bsci.plm.watermark.BSCWatermarkFileGeneration wcadmin - Watermark BusinessLogic - 
804: 2018-06-14 05:28:56,730 DEBUG [ajp-bio-8011-exec-2] com.bsci.plm.watermark.BSCWatermarkFileGeneration wcadmin - Center of page - [306.0 , 396.0]
805: 2018-06-14 05:28:56,730 DEBUG [ajp-bio-8011-exec-2] com.bsci.plm.watermark.BSCWatermarkFileGeneration wcadmin - Stamped Center Watermark - [Released (Expiring)] , []
806: 2018-06-14 05:28:56,730 DEBUG [ajp-bio-8011-exec-2] com.bsci.plm.watermark.BSCWatermarkFileGeneration wcadmin - Stamped Footer Watermark - [Released (Expiring)] , [92001458 B.3] , [Global TMP 2] , [Confidential. Unauthorized use is prohibited.]
807: 2018-06-14 05:28:56,731 DEBUG [ajp-bio-8011-exec-2] com.bsci.plm.watermark.BSCWatermarkFileGeneration wcadmin - Center of page - [306.0 , 396.0]
808: 2018-06-14 05:28:56,731 DEBUG [ajp-bio-8011-exec-2] com.bsci.plm.watermark.BSCWatermarkFileGeneration wcadmin - Stamped Center Watermark - [Released (Expiring)] , []
809: 2018-06-14 05:28:56,731 DEBUG [ajp-bio-8011-exec-2] com.bsci.plm.watermark.BSCWatermarkFileGeneration wcadmin - Stamped Footer Watermark - [Released (Expiring)] , [92001458 B.3] , [Global TMP 2] , [Confidential. Unauthorized use is prohibited.]
810: 2018-06-14 05:28:56,731 DEBUG [ajp-bio-8011-exec-2] com.bsci.plm.watermark.BSCWatermarkFileGeneration wcadmin - Center of page - [306.0 , 396.0]
811: 2018-06-14 05:28:56,732 DEBUG [ajp-bio-8011-exec-2] com.bsci.plm.watermark.BSCWatermarkFileGeneration wcadmin - Stamped Center Watermark - [Released (Expiring)] , []
812: 2018-06-14 05:28:56,732 DEBUG [ajp-bio-8011-exec-2] com.bsci.plm.watermark.BSCWatermarkFileGeneration wcadmin - Stamped Footer Watermark - [Released (Expiring)] , [92001458 B.3] , [Global TMP 2] , [Confidential. Unauthorized use is prohibited.]

EDIT2 - 添加在servlet中调用方法的方式。 'IdentifierInfoDocument'和'SourceFileInputStream'正常工作，因为Logger最终得到了正确的水印消息，如果我的InputStream没有生成，我将不会得到响应PDF。 PDF是在InputStream的Response中生成的，并且由于所有Logger都被调用，我仍然认为像短语一样的问题会被标记在PDF上。

ByteArrayOutputStream bytearrayos = null; //
    try {
        BSCWatermarkFileGeneration WatermarkedFile =new BSCWatermarkFileGeneration(IdentifierInfoDocument(IdentifierInfo));
        bytearrayos = WatermarkedFile.watermarkPDFDocument(SourceFileInputStream(SourceFileServlet));
    } 
    catch (DocumentException e) {
        LOG.error("PDF Document not found - ", e);
        e.printStackTrace();
    }
    catch (WTException e) {
        LOG.error("Error while retrieving WTDOC - ", e);
        e.printStackTrace();
    }   
    catch (NullPointerException e) {
        LOG.error("Error while accessing watermark properties from property file - ", e);
        e.printStackTrace();
    }   
    catch (IOException e) {
        LOG.error("Error while accessing the source Servlet ",e);
        e.printStackTrace();
    }
    catch (NumberFormatException e) {
        LOG.error("Error while accessing integer/float values from property file - ", e);
        e.printStackTrace();
    }

    ServletOutputStream os = response.getOutputStream();
    if(bytearrayos!=null)
        bytearrayos.writeTo(os);
    os.flush();

最终编辑 - 我弄清楚出了什么问题而且真的很蠢。不透明度初始化为局部变量，而不是我在类中定义的变量。因为我在Logger中使用它们，所以我从未对未使用的变量发出任何警告，也无法追踪原因。

0 个答案:

没有答案
相关问题
最新问题