the complete code is in github: https://github.com/cuipengfei/MPJSP/tree/master/tmp
in the controller, there is a method that handles the submit:
@RequestMapping(value = "/home", method = RequestMethod.POST)
public void handleSubmit(Customer model, BindingResult result) {
System.out.println(model.getUserName());
result.rejectValue("userName", "required.userName", "user name invalid");
}
and in jsp, there is a form like this:
<form:form method="POST" action="home" modelAttribute="Customer">
<table>
<tr>
<td>Username :</td>
<td><form:input path="userName" /></td>
<td><form:errors path="userName" cssClass="error" /></td>
</tr>
<tr>
<td colspan="3"><input type="submit" /></td>
</tr>
</table>
</form:form>
the controllers just rejects value every time, but the error message is not displayed.
the complete code can be found here: https://github.com/cuipengfei/MPJSP/tree/master/tmp