我有这个代码
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
ByteArrayOutputStream output = new ByteArrayOutputStream();
try{
response.setContentType("application/pdf");
response.setHeader("Content-Disposition", "inline; filename=details.pdf");
try{
Document document = new Document(PageSize.A4, 20, 20, 130, 20);
PdfWriter writer=PdfWriter.getInstance(document, output);
document.open();
BaseFont bf = BaseFont.createFont("c:/windows/fonts/arialuni.ttf", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);
writer.setPageEvent(new HeaderAndFooter(date));
XMLWorkerHelper worker = XMLWorkerHelper.getInstance();
List arrlist = new ArrayList();
List arrlist1 = new ArrayList();//user list
List arrlist2 = new ArrayList();//time list
Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/765a", "root", "root");
Statement st=con.createStatement( ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_UPDATABLE);
ResultSet rs=st.executeQuery("SELECT * FROM user_start2 where date='"+date+"' ");
while(rs.next()){
arrlist.add(rs.getString("data"));
arrlist1.add(rs.getString("users"));
arrlist2.add(rs.getString("strtime"));
}
for(int i=0;i
String str =(String) arrlist.get(i);
String str1 ='\n'+(String) arrlist1.get(i);
String str2 =(String) arrlist2.get(i);
String string =str.replace("
","\n").replace("
", "\n");document.add(new Paragraph(str1+"("+str2+")",new com.itextpdf.text.Font(bf, 10)));
document.add(new Paragraph(str2,new com.itextpdf.text.Font(bf, 10)));
document.add(new Paragraph(string,new com.itextpdf.text.Font(bf, 12)));
}
document.close();
response.setContentLength(output.size());
OutputStream os = response.getOutputStream();
output.writeTo(os);
os.flush();
os.close();
con.close();
}catch(IOException e){e.printStackTrace();}
}catch(IOException e){e.printStackTrace();}
catch(DocumentException e) {}
catch(Exception e) {
}
//PDF READER
// Create a reader
try{
OutputStream out = new ByteArrayOutputStream();
PdfReader reader = new PdfReader(output.toByteArray());
PdfStamper stamper = new PdfStamper(reader, out);
Document document = new Document();
document.open();
int n = reader.getNumberOfPages();
PdfContentByte cbq;
Font headerFont = new Font(FontFamily.COURIER, 13, Font.UNDERLINE);
for (int i = 1; i <= n; i++) {
cbq = stamper.getOverContent(i);
ColumnText ct = new ColumnText( cbq );
ct.setSimpleColumn( 300 , 300, 50, 50 , 150, Element.ALIGN_CENTER );
ct.addElement( new Paragraph( "Mathias" , headerFont ) );
ct.go();
}
// Close the stamper
stamper.close();
reader.close();
document.close();
} catch (DocumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
我正在尝试将页码添加到我的pdf中,但上面的代码不起作用 . 现在作为示例我只是添加文本 "mathias" 来检查它是否有效但文本 "mathias" 没有出现在pdf页面上 . 其他一切正常, Headers ,pdf上的文字显示 but not the data from the stamper .
我也试过用这个
for (int i = 1; i <= n; i++) {
getHeaderTable(i, n).writeSelectedRows(0, -1, 34, 803, stamper.getOverContent(i));
}
public static PdfPTable getHeaderTable(int x, int y) {
PdfPTable table = new PdfPTable(2);
table.setTotalWidth(527);
table.setLockedWidth(true);
table.getDefaultCell().setFixedHeight(20);
table.getDefaultCell().setBorder(Rectangle.BOTTOM);
table.addCell("FOOBAR FILMFESTIVAL");
table.getDefaultCell().setHorizontalAlignment(Element.ALIGN_RIGHT);
table.addCell(String.format("Page %d of %d", x, y));
return table;
}
但是压模没有出现任何东西 .
我错过了什么吗?
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