struts1的errors标签有关问题

public class ValidateForm extends ActionForm {        private User user = new User();        public User getUser() {        return user;    }        public void setUser(User user) {        this.user = user;    }    @Override    public ActionErrors validate(ActionMapping mapping, HttpServletRequest request) {        ActionErrors errors = new ActionErrors();        if(user.getName() == null || "".equals(user.getName().trim())) {            System.out.println("name must be not null!");            errors.add("name", new ActionMessage("name", "name must be not null!"));        }        if(errors.get().hasNext()) {            System.out.println("here is ValidateForm and has errors");            return errors;        } else {            System.out.println("here is ValidateForm and no errors");            return null;        }    }}Action的execute方法只有一句mapping.findForward("success");

<struts-config>    <form-beans>        <form-bean name="validateForm"            type="com.struts.form.ValidateForm">        </form-bean>    </form-beans>    <action-mappings>        <!-- 带有验证功能的ACTION -->        <action path="/validateAction" name="validateForm"            type="com.struts.action.ValidateAction"            input="/ValidateAction/errors.jsp" validate="true">            <forward name="success" path="/WEB-INF/user/success.jsp"></forward>        </action>    </action-mappings>    <message-resources parameter="MessageResources" /></struts-config>

name must be not null!here is ValidateForm and has errors//上面这两句是System.out.println输出的2011-4-27 21:32:02 org.apache.struts.util.PropertyMessageResources loadLocale警告:   Resource MessageResources_zh_CN.properties Not Found.2011-4-27 21:32:02 org.apache.struts.util.PropertyMessageResources loadLocale警告:   Resource MessageResources_zh.properties Not Found.2011-4-27 21:32:02 org.apache.struts.util.PropertyMessageResources loadLocale警告:   Resource MessageResources.properties Not Found.