Question

I had a doubt regarding Messages being set in the custom validator in JSF 2.0. here is the code

public void validate(FacesContext context, UIComponent component,
        Object value) throws ValidatorException {

    matcher = pattern.matcher(value.toString());
    if(!matcher.matches()){

        FacesMessage msg = 
            new FacesMessage("E-mail validation failed.", 
                    "Invalid E-mail format.");
        msg.setSeverity(FacesMessage.SEVERITY_ERROR);
        throw new ValidatorException(msg);

    }

}

Now here I am curious about how is it actually working, since we haven t written the part of the code context.add(msg)

SO没有在面目中添加这些讯息,它如何设法在国库上检索?

Answer 1

JSF do that in www.un.org/Depts/DGACM/index_french.htm 它只是在<条码>-副渔获物栏内打上你的有效器,捕获了<条码>的门槛值/代码>,从中抽取了<条码>的条码<标准/代码>,最后添加到关于客户身份的<条码>。

共同基金的实施是公开的。 http://javaserverfaces.java.net rel=“nofollow” 来源代码: 班级:

// If our value is valid and not empty or empty w/ validate empty fields enabled, call all validators
if (isValid() && (!isEmpty(newValue) || validateEmptyFields(context))) {
    if (validators != null) {
        Validator[] validators = this.validators.asArray(Validator.class);
        for (Validator validator : validators) {
            try {
                validator.validate(context, this, newValue);
            }
            catch (ValidatorException ve) {
                // If the validator throws an exception, we re
                // invalid, and we need to add a message
                setValid(false);
                FacesMessage message;
                String validatorMessageString = getValidatorMessage();

                if (null != validatorMessageString) {
                    message =
                          new FacesMessage(FacesMessage.SEVERITY_ERROR,
                                           validatorMessageString,
                                           validatorMessageString);
                    message.setSeverity(FacesMessage.SEVERITY_ERROR);
                } else {
                    Collection<FacesMessage> messages = ve.getFacesMessages();
                    if (null != messages) {
                        message = null;
                        String cid = getClientId(context);
                        for (FacesMessage m : messages) {
/* Here --> */              context.addMessage(cid, m);
                        }
                    } else {
                        message = ve.getFacesMessage();
                    }
                }
                if (message != null) {
/* And here --> */  context.addMessage(getClientId(context), message); 
                }
            }
        }
    }
}

Answer 2

jsf在背后有排他性,他正在宣读你的信息。

如果回答你的问题,我不理解你的问题。

maybe this link will help you: http://java.dzone.com/articles/jsf-validation-tutorial-error

你们也必须为错误留出一席之地。

友情链接