java文件下载,在下载对话框中没有显示自己给定的文件名
本人写了一个下载文件的类,下载文件时,文件能够被下载,但是默认的文件名不是我想要的文件名：
public class DownloadCSVFileAction extends Action{
public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {
try {
String fileName = request.getParameter( "fileName ");
long maID = Long.parseLong(request.getParameter( "maID "));
String filePath = request.getSession().getServletContext().getRealPath( "/ ")+ "csv/ "+maID+ "/ "+fileName;
File fdown = new File(filePath);
int filelength = Integer.parseInt(String.valueOf(fdown.length()));
response.setContentType( "application/text;charset=GB2312 ");
response.setHeader( "Content-Dispositon ", "attachment;filename=销售详细记录.csv "); //销售详细记录.csv是我想要的下载文件的文件名,但是下载对话框中显示的是 downLoadCSVFile.do
response.setContentLength(filelength);
byte b[]=new byte[filelength];
FileInputStream fi=new FileInputStream(fdown);
OutputStream o=response.getOutputStream();
int n = 0;
while((n=fi.read(b))!=-1) {
o.write(b,0,n);
}
fi.close();
o.close();
return null;
}catch (Exception e) {
request.setAttribute( "ERROR ", e);
return mapping.findForward( "error ");
}
}
}
[解决办法]
试试下面的写法
response.setHeader( "Content-disposition ", "attachment;filename=\ " "+new String(销售详细记录.csv.getBytes( "GB2312 "), "ISO8859_1 ")+ "\ " ")
[解决办法]
我以前都是用的servlet
下面是我下载pdf文档的一段代码，希望对你有帮助，
----------------------------------------------------
import ...........
public class OutPutDataAction extends HttpServlet{
............
public void doPost(HttpServletRequest request,HttpServletResponse response) throws java.io.IOException{
//设置类型为pdf
response.setContentType( "application/pdf;charset=gb2312 ");
//Function.randomFileName()生成一个随机的文件名,如：13059853263
//最好不要为中文
String filepath = F:/pdffile/ "+Function.randomFileName()+ ".pdf ";
//这里设置下载框中的文件名
String title= "下载的文件名 ";
response.setHeader( "Content-disposition ", "attachment; filename= "
+new String( title.getBytes( "GBK "), "ISO8859_1 " )+ ".pdf ");
//---------------------------------
//下面建立pdf文档
Document document = new Document(PageSize.A4, 36,36,36,36);
java.io.FileOutputStream output = new java.io.FileOutputStream(filepath);
try{
PdfWriter writer = PdfWriter.getInstance(document, output);
document.addTitle(title);
document.addAuthor( "SWOKY ");
document.addSubject( "This example explains "+title);
document.addKeywords( "jishou university,swoky ");
document.addCreator( "Powder by :SWOKY ");
document.open();
Image img = Image.getInstance(SystemProperty.get( "WEBROOT ")+ "/jsp/file/temp.jpg ");
img.setAlignment(Image.ALIGN_CENTER);
document.add(img);
document.close();
------------------------
//以上为在服务器由filepath所指向的路径建立一个pdf文档
//downloadFile()为将刚才建立的文档输出到客户端
downloadFile(filepath,response);
}catch (DocumentException de){
//异常
}
}
private void downloadFile(String filepath,HttpServletResponse response) throws java.io.IOException {
java.io.BufferedInputStream bis =
new java.io.BufferedInputStream(
new java.io.FileInputStream(new String( filepath.getBytes( "GBK "), "ISO8859_1 " )));
javax.servlet.ServletOutputStream bos = response.getOutputStream();
byte[] buff = new byte[2048];
int bytesRead;
while(-1 != (bytesRead = bis.read(buff, 0, buff.length))) {
bos.write(buff,0,bytesRead);
}
bos.flush();
bis.close();
bos.close();
//timeout
response.setStatus(response.SC_OK );
response.flushBuffer();
}
..................
}
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