Do not issue parameters to POST request and URL from Form with Wicket

Hide POST request and URL parameters from Form in Wicket

Version Wicket 7.3

** Background **

By default, when onSubmit () is executed on the form component, the parameter value is displayed in the URL.

https://mysite.com/;jsessionid=B85EE5CB0349CCA2FE37AF76AB5C30C1?wicket:bookmarkablePage=:com.mycompany.cheese.CheeseMain&Title=Havarti&group=cheeseName

trial and error

It seems that PageParametersEncoder is used by default IPageParametersEncoder: Wicket Reference

Create IPageParametersEncoder with no parameters

NoParamsPageParametersEncoder.java

public class NoParamsPageParametersEncoder extends PageParametersEncoder {
  
	public NoParamsPageParametersEncoder() {
		super();
	}

	@Override
	public Url encodePageParameters(final PageParameters pageParameters) {
		Url url = new Url();
		//Return URL as is
		return url;
	}
}

It seems that you can specify this at the time of mounting

WicketApplication.java

mount(new MountedMapper("/NextPage", NextPage.class, new NoParamsPageParametersEncoder()));

And pass it with parameters from the form

PrevPage.java

StatelessForm<PrevPage> inputForm = new StatelessForm<PrevPage>("inputForm") {

	@Override
	protected void onSubmit() {
		PageParameters newParams = new PageParameters();
		newParams.set("USER", "user_id");
		newParams.set("PASSWD", "password");
		setResponsePage(new NextPage(newParams));
	}
};

By the way, it was possible with both Form and StatelessForm.

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