Old values in input fields by GET request - forms

Question

I have got this JSF form in the file loginform.xhtml:
<h:form>
<h:panelGrid columns="3" styleClass="components" cellpadding="5px">
<h:outputText value="#{msg['login.username']}"/>
<h:inputText id="username" value="#{userManager.loginUser.username}" required="true"/>
<h:message styleClass="error" for="username"/>
<h:outputText value="#{msg['login.password']}"/>
<h:inputSecret id="password" value="#{userManager.loginUser.password}"
required="true"/>
<h:message styleClass="error" for="password"/>
<h:commandButton value="#{msg['login.confirm']}"
action="#{userManager.doLogin}"/>
</h:panelGrid>
</h:form>
With this ManagedBean:
public class UserManager implements Serializable {
/**
* Creates a new instance of UserManager
*/
public UserManager() {
}
private UserRecord loginUser = new UserRecord();
private UserRecord sessionUser;
#EJB
private UserRecordFacadeLocal userRecordFacade;
public UserRecord getLoginUser() {
return loginUser;
}
public void setLoginUser(UserRecord loginUser) {
this.loginUser = loginUser;
}
public UserRecord getSessionUser() {
return sessionUser;
}
public void setSessionUser(UserRecord sessionUser) {
this.sessionUser = sessionUser;
}
public String doLogout() {
setSessionUser(null);
return "logout";
}
public String doLogin() {
if (userRecordFacade.authorizedAcces(loginUser.getUsername(), loginUser.getPassword())) {
setSessionUser(loginUser);
return "success";
}
return "failure";
}
}
Here is my question: if I type a GET request to loginform.xhtml (in my case: http://localhost:8080/Impetus-web/loginform.xhtml), the form is filled by the old values! Even more correct values - this is really bad for the security of the system :-). The same happens, if I make the navigation to this page via h:link tag. It works fine only in the case, if I jump to the page via POST request (via commandButton f. e.).
How is it possible?

Answer 1

JSF doesn't do that (as evidence, look in generated HTML output). The webbrowser does that. This feature is called "autofill"/"autocomplete". Just tell it to not do that by adding autocomplete="off" to the individual input components.
<h:inputText ... autocomplete="off" />
<h:inputSecret ... autocomplete="off" />
Or if you're on JSF 2.2 (or are using OmniFaces Html5RenderKit), you could also set it form-wide.
<h:form ... autocomplete="off">