getvalue of check box on server side in GWT

Question

I am using GWT. I have a chkBox and fileupload which are added to formPanel.

after formPanel.submit();

On Server Side

I want the value of chkbox

so

if (item.isFormField()) {
        if (item.getFieldName().equalsIgnoreCase("chkbox")) {
                        chkbox= Streams.asString(item.openStream());
                    }

                }

when chkbox.getvalue is true , the value on server side is On and chkbox.getValue is false the i get null on the server side.

i need the values of chkbox so that i can perform operation on file depending on the value of chkbox

The logical thing to do would be to pass the value up from the client as part of the request. IMO, the server should be agnostic of UI -- as far as the server should be concerned, the UI doesn't exist. — Chris Cashwell, Apr 25 '12 at 14:50

score 1 · Accepted Answer · answered Apr 25 '12 at 16:55

"On" is the default value of a checkbox when no form value has been provided.

That value will only be sent to the server if the box is checked (absence of the field means it was unchecked): http://www.w3.org/TR/html5/form-submission.html#constructing-form-data-set

If you really want to send anything else, then don't give your checkbox a name and instead use a Hidden field that you update using a ValueChangeHandler on the Checkbox.

getvalue of check box on server side in GWT

1 Answers1