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[英]ClientAbortException: java.io.IOException during big file upload
[英]How fix java download button continuous click ClientAbortException: java.io.IOException error?
我的下載頁面有兩個下載(pdf和安裝程序)按鈕。 僅單擊一次下載按鈕時,它工作正常。 但是,如果連續單擊它,則會引發ClientAbortException:java.io.IOException
錯誤。 我已經找到了許多ClientAbortException答案,但對我來說它們並不容易理解。 有人可以幫我解決這個錯誤嗎?
這是我在Controller中的下載按鈕的代碼:
@Repository
public interface UserRepository extends JpaRepository<User, Long> {
User findByToken(String token);
}
@Controller
public class UserController {
@RequestMapping(value = "download", method = RequestMethod.POST, params = "action=ins")
public String downloadInstaller(HttpServletRequest request, HttpServletResponse response, @ModelAttribute User user, Model model)
{
User user2 = userRepository.findByToken(user.getToken());
if(user2.getDownload() == 0) {
user2.setDownload(1);
userRepository.save(user2);
File file = new File("File");
download(file, response);
log.info(Log.LOG_DOWNLOAD_INSTALLER);
return "";
}
return "downloaded";
}
@RequestMapping(value = "download", method = RequestMethod.POST, params = "action=pdf")
public String downloadPDF(HttpServletResponse response, @ModelAttribute User user, Model model) {
User user2 = userRepository.findByToken(user.getToken());
if(user2.getDownload() == 0) {
user2.setDownload(1);
userRepository.save(user2);
File file = new File("Pdf");
download(file, response);
log.info(Log.LOG_DOWNLOAD_PDF);
return "";
}
return "downloaded";
}
public void download(File file, HttpServletResponse response) {
try {
InputStream is = new FileInputStream(file);
response.setContentType("application/octet-stream");
// Response header
response.setHeader("Content-Disposition", "attachment; filename=\"" + file.getName() + "\"");
// Read from the file and write into the response
OutputStream os = response.getOutputStream();
byte[] buffer = new byte[1024];
int len;
while ((len = is.read(buffer)) != -1) {
os.write(buffer, 0, len);
}
os.flush();
os.close();
is.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
您是否從“ os.flush();”獲取異常? download()方法的代碼行? 如果是這樣,則基本上意味着發送請求的客戶端不再等待響應。 如果您提出了兩個請求,則第一個請求可能會失敗。
如果您沒有想要通過多次單擊按鈕來實現的特殊要求,我想您可以捕獲並忽略download()中的異常嗎?
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