拦截器未在Struts中被调用 [英] Interceptor not getting called in Struts

问题描述

在操作之前或之后没有调用我的拦截器(验证).任何想法如何使它起作用?

My interceptor (validation) is not getting called before or after the action. Any ideas how to get it work ?

注意:每次调用默认拦截器.

Note : Everytime the default interceptor is being called.

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
  <package name="default" namespace="/" extends="struts-default,json-default">
    <result-types>
      <result-type name="tiles" class="org.apache.struts2.views.tiles.TilesResult" />
      <result-type name="json" class="org.apache.struts2.json.JSONResult" />
    </result-types>

    <interceptors>
       <interceptor name="validation" class="ValidatorBaseAction"/>
      <interceptor-stack name="default">
        <interceptor-ref name="logger"/>
      </interceptor-stack>
      <interceptor-stack name="validationStack">
         <interceptor-ref name="validation"/>
         <interceptor-ref name="default"/>
      </interceptor-stack>
    </interceptors>

    <default-interceptor-ref name="default" />

    <action
        name="viewRequest"
        class="ViewAction"
        method="execute">
      <interceptor-ref name="validationStack" /> 
      <result name="input" type="redirectAction">explore</result>
      <result name="success" type="redirect">/showRequest.do?${explorerParameters}</result>
    </action>
  </package>
</struts>

推荐答案

主要问题:

动作和拦截器的

• class都必须指定 FQCN ，而不仅是名称.然后将其更改为:

  Main problem:

  • class both for Actions and Interceptors must specify the FQCN, not only the name. Then change it to something like:

    <interceptor name="validation" class="com.foo.bar.ValidatorBaseAction"/>
    

    ，然后将操作更改为

    <action name="viewRequest" class="com.foo.bar.ViewAction" method="execute">
    

  • 如果它不是Interceptor，请不要将其命名为ValidatorBaseAction，而应将其命名为ValidatorBaseInterceptor.并确保其中没有任何动作 ；
  • 不要仅使用一个拦截器使用拦截器堆栈，我敢肯定，在99％的情况下，它是没有用的.如果不确定，只需使用defaultStack，然后将拦截器添加到其中即可.
  • Don't call it ValidatorBaseAction if it is an Interceptor, call it ValidatorBaseInterceptor. And ensure there is nothing of an Action inside it;
  • Don't use an Interceptor Stack with only one Interceptor, I'm pretty sure it would be useless in 99% of the cases. If you are not sure, just use the defaultStack, adding your interceptor to it.

  • 与此等效

    <package ... extends="json-default"
    

    那是更干净的；

    由于您扩展了json-default，因此无需重新定义JSON结果，然后删除

    Since you extends json-default, you don't need to redefine the JSON result, then remove

    <result-type name="json" class="org.apache.struts2.json.JSONResult" />
    

    那没用.

    在重定向到操作时始终尝试使用redirectAction结果，并且仅在重定向到其他资源或外部URL时使用redirect结果

    Try always to prefer redirectAction result when redirecting to an Action, and use redirect result only when redirecting to other resources or external URLs

    这篇关于拦截器未在Struts中被调用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！