iText-为PDF添加水印

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 private static void addWatermark(PdfStamper stamper, Rectangle pageRectangle, int waterMarkCount,      String waterMarkName) {    PdfContentByte content;    BaseFont base = null;    try {      //设置字体      base = BaseFont.createFont(BaseFont.HELVETICA, BaseFont.WINANSI, BaseFont.NOT_EMBEDDED);    } catch (DocumentException e) {      e.printStackTrace();    } catch (IOException e) {      e.printStackTrace();    }//计算水印X,Y坐标    float x = pageRectangle.getWidth() / 2;    float y = pageRectangle.getHeight() / 2;    for (int i = 1; i < waterMarkCount + 1; i++) {　　      content = stamper.getOverContent(i);//获得PDF最顶层      content.saveState();      // set Transparency      PdfGState gs = new PdfGState();      gs.setFillOpacity(0.2f);//设置透明度为0.2      content.setGState(gs);            content.beginText();      content.setColorFill(BaseColor.GRAY);      content.setFontAndSize(base, 40);      content.showTextAligned(Element.ALIGN_CENTER, waterMarkName, x, y, 35);//水印文字成35度角倾斜      content.endText();      content.beginText();            content.setColorFill(BaseColor.GRAY);      content.setFontAndSize(base, 30);      String seeAttached="(See attached digital certificate)";      content.showTextAligned(Element.ALIGN_CENTER, seeAttached, x, y-42, 35);      content.endText();      content.restoreState();//注意这里必须调用一次restoreState 否则设置无效    }  }

1 楼 wearwlnd 2011-11-02 需要加什么库么 2 楼 kong6001 2011-11-15 wearwlnd 写道需要加什么库么
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