为什么请求要去Struts Dispatcher?

本文介绍了为什么请求要去Struts Dispatcher?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我同时配置了 Struts 2 和 Spring MVC.我的 web.xml 如下所示.当我点击 REST URL 上传文件时，它会调用 struts 调度程序而不是 Spring.

I have both Struts 2 and Spring MVC configured. My web.xml looks like below. When I hit a REST URL to upload file, it invokes struts dispatcher instead of Spring.

为什么 URL /rest/uploadfile/iec9.pdf 要去 Struts Dispatcher?

Why URL /rest/uploadfile/iec9.pdf is going to Struts Dispatcher?

web.xml:

<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
</filter>

<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

<servlet>
<servlet-name>springmvc-dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
<servlet-name>springmvc-dispatcher</servlet-name>
<url-pattern>/rest/*</url-pattern>
</servlet-mapping>

<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/springmvc-dispatcher-servlet.xml</param-value>
</context-param>

<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<filter>
<filter-name>jsonpCallbackFilter</filter-name>
<filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
</filter>
 
<filter-mapping>
<filter-name>jsonpCallbackFilter</filter-name>
<url-pattern>*.json</url-pattern>
</filter-mapping>

推荐答案

您的 spring MVC 调度程序 servlet 被映射到 Struts 过滤器处理的 URL 子集.至于过滤器在任何其他 servlet 之前调用，那么它将具有优先权.要解决此问题，您需要配置 Struts 以从映射中排除某些 URL.

Your spring MVC dispatcher servlet is mapped to the subset of URLs handled by the Struts filter. As far as filter invoked before any other servlets then it will have precedence. To workaround you need to configure Struts to exclude some URLs from mapping.

<struts>
    <constant name="struts.action.excludePattern" value="/rest/?.*"/>
    ...

</struts>

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