Spring Web Flow模型验证无法正常工作

Question

I am currently working on a web application, which uses Spring Web Flow for some forms. I want to use the automatic validation powered by spring, so therefore I have

• instantiated a 'validator' bean in my spring web flow configuration file (Class LocalValidatorFactoryBean).
• Created a method with the signature validate{VieStateId}(ValidationContext context) inside my model (which is associated to the view state in the flow configuration as a model).
• Used spring:bind tag from the spring tag library to show error message if it appears.

So far my web flow view page won't go further when Validator is associated, so I can see that it is going to my validate method. The problem is that I can't get my error message to show. When testing ${status.error} inside my bind tag, then it returns false, always.

My Validate method inside my Model Class.

public void validateEnterMovieDetails(ValidationContext context) {
    if (context.getUserEvent().equals("next")) {
        MessageContext messages = context.getMessageContext();

        if (this.title.isEmpty() || this.title == null) {
            messages.addMessage(new MessageBuilder().error().source("title").code("validation.movie.title.required").build())
        }
    }
}

My JSP file

<form:form modelAttribute="movie" action="${flowExecutionUrl}">
    <spring:bind path="title">
        <c:if test="${status.error}">
            <form:errors path="title" />
        </c:if>
    </spring:bind>
</form:form>

My problem is that it seems that my validation is working, since when I apply this validate method, then I can't go to the next view in the flow, though My bind can't seem to find any errors at all.

So I hope anyone please can help me solve this problem, since I have tried search the web for answers, and nothing seemed to help. You can see the full source code to my project at my GitHub account - https://github.com/martin-rohwedder/movstream

Answer 1

Is 'EnterMovieDetails' really the id of one of your view? (if you could post you WebFlow config file, that'd be helpful).

If you use SWF 2, please have a look at the paragraph 4.10 of the documentation .

You first need to make sure that your validation method contains the view id in its name.

Also, I don't think you need to use a bind tag in your JSP around your error tag.

Hope that helps!