小编Tom*_*ner的帖子

我想要一个文本字段的远程验证器.我的PHP返回true/false值.我尝试过这样的事情:

{
   xtype: 'textfield',
   fieldLabel: 'Field',
   allowBlank: false,
   validator : function(value) {
      Ext.Ajax.request({
      url: 'psc/validate',
      params: { psc: value },
      success: function(response){
       return response.responseText                             
      }
      });
   });
}

问题是ajax请求是异步的,验证器给出"未定义的值"错误.有没有回调？所以我默认会返回false,并且一旦ajax调用完成就使textfield有效.

我试图谷歌进行extjs远程验证,但没有太多关于它.

有人帮忙或建议？谢谢.

我正在使用Spring和Tomcat 7.0开发Web应用程序.当我在浏览器中测试页面时,它不会应用CSS,因为它无法加载外部样式表.

这是我的各种文件

web.xml中

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
  <display-name>MyProject</display-name>
  <servlet>
        <servlet-name>dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet>
    <servlet-name>ResourceServlet</servlet-name>
    <servlet-class>org.springframework.js.resource.ResourceServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
    </servlet>


    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>*.htm</url-pattern>
    </servlet-mapping>    
    <servlet-mapping>
    <servlet-name>ResourceServlet</servlet-name>
    <url-pattern>/resources/*</url-pattern>
</servlet-mapping>

    <welcome-file-list>
        <welcome-file>redirect.jsp</welcome-file>
    </welcome-file-list>
</web-app>

调度员servlet.xml中

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xmlns:p="http://www.springframework.org/schema/p"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
 http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
 http://www.springframework.org/schema/mvc
 http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
 http://www.springframework.org/schema/context
 http://www.springframework.org/schema/context/spring-context-3.0.xsd">

    <bean id="viewResolver"
        class="org.springframework.web.servlet.view.InternalResourceViewResolver"
        p:prefix="/WEB-INF/jsp/" p:suffix=".jsp" />

    <bean id="userService" class="com.abdus.service.UserServiceImpl" />

    <context:component-scan base-package="com.abdus.web" />
    <bean
        class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping" />
    <bean
        class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />

</beans>

这是来自jsp页面的头

welcomePage.jsp

   <meta charset="utf-8"/>
   <title>Welcome</title>
   <link …