https://github.com/try0/wicket-fileupload-example/blob/main/wicket-fileupload-example-app/src/main/java/jp/try0/wicket/example/fileupload/HomePage.java#L52
if this line uncomment, FilesSelectedBehavior#onSelected is not fired. 2022年6月10日(金) 23:18 Ryo Tsunoda <try0.developm...@gmail.com>: > >Hum... if you can explain more I would appreciate it... because maybe > this can be improved in Wicket itself. > > If use FileUploadField#setRequired(true), FormComponent #validateRequired > -> #checkRequired will be executed. > But FileUploadField#getInput() returns null, so validation result in an > error. > Therefore, It seems that the Behavior's(FilesSelectedBehavior) event that > FileUploadField has is not fired. > > 2022年6月10日(金) 21:19 Ernesto Reinaldo Barreiro <reier...@gmail.com>: > >> Hi, >> >> On Fri, Jun 10, 2022 at 2:31 PM Ryo Tsunoda <try0.developm...@gmail.com> >> wrote: >> >> > Thanks for the reply. >> > >> > I have tried it and I can display the error without changing the request >> > limit. >> > Thank you. >> > >> >> Yes. This is just a kind of preprocessing. When the file (files) is (are) >> selected the info is collected via JavaScript and is sent to the server. >> Thus you can decide what to do before uploading: e.g an upload button >> might >> only be enabled if file (files) match your expectations regarding type, >> syze and so on. >> >> >> > It does not seem to work well when used with >> FileUploadField#setRequired. >> > I will change the implementation of the required validation and then use >> > that. >> > >> Hum... if you can explain more I would appreciate it... because maybe this >> can be improved in Wicket itself. >> >> >> >> > >> > 2022年6月10日(金) 16:21 Ernesto Reinaldo Barreiro <reier...@gmail.com>: >> > >> > > See >> > > >> > > >> > > >> > >> https://javadoc.io/doc/org.apache.wicket/wicket-core/9.4.0/org/apache/wicket/markup/html/form/upload/FilesSelectedBehavior.html >> > > >> > > This behavior can be used to get an AJAX round trip to the server when >> > the >> > > user selects a file (or files). Then you can use that information to >> let >> > > the user know the selected file is bigger than it should (and possibly >> > > disable the upload "button"). >> > > >> > > >> > > On Thu, Jun 9, 2022 at 2:57 PM Ryo Tsunoda < >> try0.developm...@gmail.com> >> > > wrote: >> > > >> > > > Hi. >> > > > >> > > > Looking at Form#onFileUploadException, I see that it sets an error >> > > message >> > > > (resource key: uploadTooLarge), is there any way to display this >> error >> > in >> > > > the browser? >> > > > >> > > > I use Form#setMaxSize and >> > ApplicationSettings#setDefaultMaximumUploadSize >> > > > methods. >> > > > When I upload a file that exceeds these settings, I would like to >> > return >> > > a >> > > > response with an error message and display it on browser. However, >> the >> > > > browser displays [ERR_CONNECTION_RESET] now. >> > > > >> > > > >> > > > Regards, >> > > > Ryo Tsunoda. >> > > > >> > > >> > > >> > > -- >> > > Regards - Ernesto Reinaldo Barreiro >> > > >> > >> >> >> -- >> Regards - Ernesto Reinaldo Barreiro >> >