表单的验证一直是Web开发头痛的问题，表单验证类 Validator就是为解决这个问题而写的，旨在使设计者从纷繁复杂的表单验证中解放出来，把精力集中于UI设计与业务逻辑上。-Verification form has been a headache for Web development, Forms Authentication is the type of Validator to solve this problem and wrote, designed to enable design