//下載文件
@RequestMapping("downloadDemo")
@ResponseBody
public synchronized void downloadDemo(HttpServletRequest request, HttpServletResponse response) throws IOException{
InputStream inputStream = null;
ServletOutputStream servletOutputStream = null;
try {
String filename = "文件.xls";
String path = "static/file/文件.xls";
//String path = "static/file/文件.xlsx";
org.springframework.core.io.Resource resource = resourceLoader.getResource("classpath:"+path);
response.setContentType("application/vnd.ms-excel");
response.addHeader("Cache-Control", "no-cache, no-store, must-revalidate");
response.addHeader("charset", "utf-8");
response.addHeader("Pragma", "no-cache");
String encodeName = URLEncoder.encode(filename, StandardCharsets.UTF_8.toString());
response.setHeader("Content-Disposition", "attachment; filename=\"" + encodeName + "\"; filename*=utf-8''" + encodeName);
inputStream = resource.getInputStream();
response.setHeader("Content-Length", String.valueOf(inputStream.available()));//xlsx格式的文件可以下載
servletOutputStream = response.getOutputStream();
IOUtils.copy(inputStream, servletOutputStream);
response.flushBuffer();
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (servletOutputStream != null) {
servletOutputStream.close();
servletOutputStream = null;
}
if (inputStream != null) {
inputStream.close();
inputStream = null;
}
// 召喚jvm的垃圾回收器
System.gc();
} catch (Exception e) {
e.printStackTrace();
}
}
}
下載靜態文件
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