将输出流发送到浏览器并让浏览器保存它[重复]

Question

outputStream out=myMthodToCreateOutPutStream（）；

现在如何将此out保存到浏览器。

Answer 1

不清楚您从哪里读取数据。您需要创建一个InputStream来读取数据。

然后，首先需要将响应头设置为

HttpServletResponse.setHeader("Content-Disposition", "attachment; filename=datafile.xls");

使用您需要的任何文件名。

response.setContentType("application/vnd.ms-excel");

OutputStream outStream = response.getOutputStream();

byte[] buf = new byte[4096];
int len = -1;

//Write the file contents to the servlet response
//Using a buffer of 4kb (configurable). This can be
//optimized based on web server and app server
//properties
while ((len = inStream.read(buf)) != -1) {
    outStream.write(buf, 0, len);
}

outStream.flush();
outStream.close();