I have a JSP page where I have to select a file Uploading after selecting a drop down value i.e. my file upload option is visible only i select a specific value from the drop down say "upload" else file upload option is invisible.
I have to process my request as a normal form request in case no file upload option is selected. and if the file is selected for upload it should be process accordingly. I have created my JSP like below:
Form 1: have all the fields including drop down., i.e normal form. if drop down value is selected "upload" then render the file upload option in 2nd form.
Form 2: having file upload field i.e. enctype="multipart/form-data" and a button.
While pressing the button in invoke a java script and check if file upload is null, if yes submit form1 i.e. form1.submit() else submit form2 i.e. form2.submit();
I am using : boolean isMultipart = FileUpload.isMultipartContent(request); check but each time it gives me the same boolean flag value is true, whether the file uploaded option is selected or not.
Interesting!!! But i dont understand very weel you problem. I need to see part of you code (servlet).
Please check this example they make comparation diferent to you. Try it! example
Joined: Sep 05, 2011
Thanks for response.
This problem is solved. The issue was <input type="submit" /> was in 2nd from and hence, it was submitting the enclosing form which was multi part. i changed to <input type=""button" /> and it solved my problem.
subject: Uploading Single File by Using enctype="multipart/form-data"