Question

enter code here 首先，我以这种方式制作我的pdfFile：

PdfReader pdfr=new PdfReader(filepath1);//existing file
PdfStamper pdfs=new PdfStamper(pdfr, filepath2);//file to be modified
...
PdfContentByte cb=pdfs.getOverContent(1);
cb.setColorFill(new BaseColor(0x00,0x4E,0x44));
cb.rectangle(coordX,min_Y,60,haut);
cb.saveState();
PdfGState state=new PdfGState();
state.setFillOpacity(0.1f);
cb.setGState(state);
cb.fillStroke();
cb.restoreState();

使用Adobe Reader XI，文件pdf是正确的，但是当我尝试用servlet读取它时，我看不到任何矩形。 Servlet的：

protected void doPost(...){
File pdfFile=new File(filepath2);
FileInputStream fis=new FileInputStream(filepath2);
response.setContentType("application/pdf");
response.addHeader("Content-Disposition","inline;filename=pdfFN);
response.setContentLength((int) filepath2.length());
OutputStream resOS=response.getOutputStream();
int length=1;
byte[] buffer=new byte[8192];
while((length=fis.read(buffer))!=-1)
{resOS.write(buffer,0,length);
}
fis.close();
resOS.flush();resOS.close();

会发生什么？提前谢谢。

Answer 1

我道歉，我会更清楚。

首先我创建一个pdf文件（File1），这是一个每周网格（有几天和几小时），带有Itext - ＆gt;使用acrobat reader XI查看File1没问题。

我使用File1修改pdfStamper：

PdfReader pdfr=new PdfReader(File1);//existing file code here
PdfStamper pdfs=new PdfStamper(pdfr, File2);//file to be modified
...
PdfContentByte cb=pdfs.getOverContent(1);
cb.setColorFill(new BaseColor(0x00,0x4E,0x44));
cb.rectangle(coordX,min_Y,60,haut);
Phrase phrase = new Phrase(text, new Font(bf, fontSize));//insert text in rectangle
        ColumnText.showTextAligned(cb, Element.ALIGN_CENTER, phrase,
            // center horizontally
           (float) (coordX + coordX+60) / haut_c,   //haut_c
                rect1,
            0); 
cb.saveState();
PdfGState state=new PdfGState();
state.setFillOpacity(0.1f);//text is now visible
cb.setGState(state);
cb.fillStroke();
cb.restoreState();

我尝试阅读File2中的jsp：

<object data="/Empl_temps/MyServlet?file='+File2+' type="application/pdf" width="600" height="900"></object>

MyServlet：

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    // TODO Auto-generated method stub
    String pdfFileName=request.getParameter("file")+".pdf";
    String contextPath="Y:\\Empl_temps\\";
    System.out.println("Lect_pdf -"+contextPath+pdfFileName);
    File pdfFile=new File(contextPath+pdfFileName);
    FileInputStream fis=new FileInputStream(pdfFile);
    response.setContentType("application/pdf");
    response.addHeader("Content-Disposition", "inline;filename="+pdfFileName);
    response.setContentLength((int)pdfFile.length());
    OutputStream responseOutputStream=response.getOutputStream();
    int length=-1;
    byte[] buffer=new byte[8192];
    while((length=fis.read(buffer))!=-1)
    {
        responseOutputStream.write(buffer, 0, length);
    }
    fis.close();
    responseOutputStream.flush();responseOutputStream.close();
}

我可以阅读File2，但我看不到矩形，我只看到矩形文字。

servlet用矩形读取pdf

1 个答案: