标签:top oct map cat port buffered input null 形式
方法一:
@RequestMapping(‘download‘)
def download(HttpServletRequest request, HttpServletResponse response) {
TtxSession session = getSession(request)
String fileName=‘OrderData--20190225.csv‘
String pathName="C:\\export\\OrderData--20190225.csv"
downloadFile(response, fileName) { HttpServletResponse res ->
byte[] bs = new File(pathName).toPath().readBytes()
response.getOutputStream().write(bs)
}
return null
}
方法二
@RequestMapping(‘downloads‘)
def downloads(HttpServletRequest request, HttpServletResponse response) {
String path="C:\\export\\OrderData--20190225.csv"
// path是指欲下载的文件的路径。
File file = new File(path)
// 取得文件名。
String filename = file.getName()
// 取得文件的后缀名。
String ext = filename.substring(filename.lastIndexOf(".") + 1).toUpperCase()
// 以流的形式下载文件。
InputStream fis = new BufferedInputStream(new FileInputStream(path))
byte[] buffer = new byte[fis.available()]
fis.read(buffer)
fis.close()
// 清空respons
response.reset()
// 设置response的Header
response.addHeader("Content-Disposition", "attachment;filename=" + new String(filename.getBytes()))
response.addHeader("Content-Length", "" + file.length())
OutputStream toClient = new BufferedOutputStream(response.getOutputStream())
response.setContentType("application/octet-stream")
toClient.write(buffer)
toClient.flush()
toClient.close()
return null
}
标签:top oct map cat port buffered input null 形式
原文地址:https://www.cnblogs.com/joker331/p/10437198.html