GWT simple web form submit - redirect to new page

问题

I have a simple web form written in Google web toolkit. I want the user to follow a new URL when he clicks on the submit button. However I cannot find any examples of redirecting the user to a new URL from within GWT code. How may I achieve this?

回答1:

To redirect the user to a new page, use Window.Location.assign().

To have this happen when the user submits the form, use FormPanel.addSubmitHandler() , or addSubmitCompleteHandler() to have the redirect happen when the form submission is complete.

回答2:

the exact answer is:

    form.getElement().<FormElement>cast().setTarget("");

by this line you changing the target parameter of the form and now the main page redirected to the action url.

be careful that Window.Location.assign() makes a new GET request after your main POST request!, So it is not the answer.

回答3:

So actually what you need to do is to use the setAction() method of the FormPanel AND you need to construct the form panel as such:

FormPanel form = new FormPanel(new NamedFrame("_self"));

This will make the submit redirect as usual.

Hope this helps.

回答4:

You can have a look at example at roughain http://examples.roughian.com/index.htm#Panels~FormPanel

Also you can read javadoc @http://google-web-toolkit.googlecode.com/svn/javadoc/1.6/com/google/gwt/user/client/ui/FormPanel.html

To make user go to a url use setAction method of FormPanel

来源：https://stackoverflow.com/questions/4062104/gwt-simple-web-form-submit-redirect-to-new-page