spring mvc - jsr 303, handling error level messages

[gianluca gian]

hello, actually I'm using jsr 303 feature to validate user input and on jsp page I'm using Spring library to display error messages. This is my validator class:

 public class CheckAddressInputValidator implements ConstraintValidator<CheckAddressInput, Data> {  
      
        @Override  
        public void initialize(CheckAddressInput constraintAnnotation) {  
        }  
      
        @Override  
        public boolean isValid(Data data, ConstraintValidatorContext context) {  
              
    if(data.property.equals("")) return false // returns errors  
    else return true; // usre input are ok  
      
        }  
    }  

on the jsp i'm displaying error messages with spring like:

<spring:hasBindErrors name="data">  
                <div class="error">  
                    <spring:bind path="data.*">  
                        <c:forEach items="${status.errorMessages}" var="error">  
                            <span><spring:message code="${error}" /></span>  
                            <br>  
                        </c:forEach>  
                    </spring:bind>  
                </div>  
            </spring:hasBindErrors>  

I'm looking a way to set on the validator code, some king of "flag" that could bring to client side, the the error level severity information (error, warning, info), so that I could style messages on jsp with different colour (es. red for error level, blue for warning one). Could you please help me? thank you

[Bill Gorder]

This is really for validation which is by definition an error maybe use redirect attributes instead.

@RequestMapping(...)
 public String myMethod(RedirectAttributes redirectAttributes) {

List<Message> messages = new ArrayList<Message>();
   messages.add(new Message("info message","info");
   redirectAttributes.addFlashAttribute("messages", messages);
   return "view";
}

private class Message{

private String message;
private String severity;
...
}

<c:foreach items="${messages}">
...
</c:foreach>

[gianluca gian]

hello, at the end I resolved in this way, inside validator:

context.buildConstraintViolationWithTemplate(errorCode).addPropertyNode("warning").addConstraintViolation();	

and within jsp:

		<spring:hasBindErrors name="myFormBean" >			
				<spring:bind path="myFormBean.*">
					<c:set var="warningList"  value="${errors.warning}" />
					<c:if test="${fn:length(warningList) gt 0}">
					
					<div class="error">
						<c:forEach items="${warningList}" var="warn">
							<span><spring:message code="${warn.defaultMessage}" /></span>
							<br/>
						</c:forEach>
					</div>
					</c:if>
				</spring:bind>
		</spring:hasBindErrors>

not sure if it is formally correct. Thnak u. Bye