如何在Jsp中下载文件另存为Pdf [英] how to download file save as Pdf in Jsp
本文介绍了如何在Jsp中下载文件另存为Pdf的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
<a class="savetopdf" href="#" onclick='
<%
try {
String w = result;// "<html><body> This is my Project </body></html>";
OutputStream file = new FileOutputStream(new File("E:\\newfile.pdf"));
Document document = new Document();
PdfWriter.getInstance(document, file);
document.open();
@SuppressWarnings("deprecation")
HTMLWorker htmlWorker = new HTMLWorker(document);
htmlWorker.parse(new StringReader(w));
document.close();
file.close();
} catch (Exception e) {
e.printStackTrace();
}
%>
>Save as PDF</a>
这是我保存为Pdf的代码，目前保存到给定目录，但是我要单击一次，但是另存为PDf，然后应下载pdf格式的文件.
This is my code for save as Pdf currently it save to Given Directory But i want once i click on But save as PDf then It should download file which will pdf format.
推荐答案
您无法在onclick内编写scriptlet，您应该创建一个新的servlet来下载文件，并在定位标记内提供链接.
You can't write scriptlet inside onclick, you should create a new servlet to download the file and give it's link inside you anchor tag.
public class ServletDownloadDemo extends HttpServlet{
private static final int BYTES_DOWNLOAD = 1024;
public void doGet(HttpServletRequest request,
HttpServletResponse response) throws IOException{
response.setContentType("application/pdf");
response.setHeader("Content-Disposition",
"attachment;filename=downloadname.pdf");
ServletContext ctx = getServletContext();
InputStream is = ctx.getResourceAsStream("Pdf file to download");
int read=0;
byte[] bytes = new byte[BYTES_DOWNLOAD];
OutputStream os = response.getOutputStream();
while((read = is.read(bytes))!= -1){
os.write(bytes, 0, read);
}
os.flush();
os.close();
}
}
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