【发布时间】：2014-08-23 05:29:13
【问题描述】：
我已经使用 iText 将表格内容导出为 pdf。
这是我的代码：
JSP：
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Export to Excel - Demo</title>
<script src="scripts.js"></script>
<script language="javascript">
function exportToExcel()
{
$("#datatoexport").val($("#customers").html());
$('#myForm').submit();
}
</script>
</head>
<body>
<form id="myForm" action="Sample" method="post">
<div id="customers">
<table id="exportTableSelector" align="left" border="2">
<thead>
<tr bgcolor="lightgreen">
<th>Sr. No.</th>
<th>Text Data</th>
<th>Number Data</th>
</tr>
</thead>
<tbody>
<%
for (int i = 0; i < 10; i++) {
%>
<tr bgcolor="lightblue">
<td align="center"><%=i + 1%></td>
<td align="center">This is text data <%=i%></td>
<td align="center"><%=i * i%></td>
</tr>
<%
}
%>
</tbody>
</table>
</div>
<br><br>
<p>
some text
</p>
<textarea name="datatoexport" id="datatoexport"></textarea>
<a href="" onclick="exportToExcel();" target="_blank">Export to Excel</a>
</form>
</body>
</html>
小服务程序：
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.pdf.PdfWriter;
/**
* Servlet implementation class Sample
*/
public class Sample extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public Sample() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
System.out.println("Inside doGet");
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
System.out.println("Inside doPost");
try {
// Get the text that will be added to the PDF
String text = request.getParameter("datatoexport");
if (text == null || text.trim().length() == 0) {
text = "You didn't enter any text.";
}
// step 1
Document document = new Document();
// step 2
ByteArrayOutputStream baos = new ByteArrayOutputStream();
PdfWriter.getInstance(document, baos);
// step 3
document.open();
// step 4
document.add(new Paragraph(text));
// step 5
document.close();
// setting some response headers
response.setHeader("Expires", "0");
response.setHeader("Cache-Control",
"must-revalidate, post-check=0, pre-check=0");
response.setHeader("Pragma", "public");
// setting the content type
response.setContentType("application/pdf");
// the contentlength
response.setContentLength(baos.size());
// write ByteArrayOutputStream to the ServletOutputStream
OutputStream os = response.getOutputStream();
baos.writeTo(os);
os.flush();
os.close();
}
catch(DocumentException e) {
throw new IOException(e.getMessage());
}
}
}
使用了itextpdf-5.1.0.jar 这是我的 JSP 页面。
如果我单击“导出到 Excel”按钮，它会显示类似 pdf 的文件
从jsp获取字符串时，
String text = request.getParameter("datatoexport");
我得到的内容与 table td tr... 相同，而不是实际值。 有什么帮助吗？
【问题讨论】：
-
您需要使用对象模型来呈现 PDF 文档中的数据。
PDFPTable我认为是要添加表的对象的名称。
标签： java html jsp servlets itext