Spring MVC Form validation error message

I have the following form:

<form:form method="POST" action="signin.dlp" commandName="user" >
<form:input path="useremail" id="useremail" /><FONT color="red"><form:errors path="useremail" /></FONT><Br />
<form:password path="pswd" id="pswd" /><FONT color="red"><form:errors path="pswd" /></FONT> <br />
<input id ="login" type="submit" value="Login"></input>                                 
</form:form>

and then I i have Validator which validates value from and send error.

what I would like to do is to add extra error 开发者_如何学编程label, for example

<form:errors path="generarError" />

and inside my validator I can do the following:

if (user.getA().equals(user.getB()))
 errors.rejectValue("generarError",
                "lengthOfUser.user.generarError",
                "A is not equeal to B. Sorry");
          }

The important thing that I generalError is not member of user object.

How can I do that?

I guess you cannot bind an error to the nonexistent field.

However, if you want to show an error that belongs to the form as a whole rather then to one of its fields, you can do the following:

<form:errors /> 

.

errors.reject("lengthOfUser.user.generarError",  "A is not equeal to B. Sorry");