Need to pay attention to two places:
1: There will be garbled codes under IE, so you need to use the userAgent part to deal with
2: After entering the method, it will not download, and there is no response. My situation is because I used AJAX to submit, so I have to solve this problem
1: Set AJAX parameters
2: Change a request method instead of AJAX
public ActionForward creatCollectFileReport(ActionMapping mapping,
ActionForm form, HttpServletRequest request,
HttpServletResponse response) throws Exception {
String filePath = getMyParamPlus(request, "filePath", "");
String userAgent = request.getHeader("User-Agent");
String fileName = "";
int start = filePath.lastIndexOf("/");
if (start != -1) {
fileName = filePath.substring(start + 1);
}
StringBuffer localStringBuffer = new StringBuffer(50);
FileInputStream localFileInputStream = null;
BufferedOutputStream localBufferedOutputStream = null;
File localFile1 = new File(filePath);
if ((localFile1 != null) && (localFile1.exists())
&& (localFile1.isFile())) {
long l = localFile1.length();
try {
localFileInputStream = new FileInputStream(localFile1);
response.reset();
response.setContentType("application/octet-stream");
response.setContentLength((int) l);
// 针对IE或者以IE为内核的浏览器：
if (userAgent.contains("MSIE") || userAgent.contains("Trident")) {
fileName = java.net.URLEncoder.encode(fileName, "UTF-8");
} else {
// 非IE浏览器的处理：
fileName = new String(fileName.getBytes("UTF-8"), "ISO-8859-1");
}
response.setHeader("Content-Disposition","attachment;filename="+ new String(fileName.getBytes("utf-8"),"ISO-8859-1"));
localBufferedOutputStream = new BufferedOutputStream(response.getOutputStream());
try {
byte[] arrayOfByte1 = new byte[2048];
int i;
while ((i = localFileInputStream.read(arrayOfByte1)) > 0) {
localBufferedOutputStream.write(arrayOfByte1, 0, i);
}
localBufferedOutputStream.flush();
} catch (Exception localException2) {
}
localBufferedOutputStream.close();
localFileInputStream.close();
} catch (Exception localException3) {
}
}
try {
if (localBufferedOutputStream != null) {
localBufferedOutputStream.flush();
localBufferedOutputStream.close();
}
if (localFileInputStream != null) {
localFileInputStream.close();
}
} catch (Exception localException1) {
}
return null;
}