struts2 配置出现错误信息This is usually caused by using Struts tags without the associated filter

pjchen

于 2011-07-13 22:55:23 发布

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分类专栏： JAVA 文章标签： struts filter tags servlet

本文链接：https://blog.youkuaiyun.com/pjchen/article/details/6604268

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本文探讨了 Struts2 框架中过滤器配置的重要性，并通过实例展示了如何正确配置过滤器以确保 Struts 标签能够正常工作。文章首先介绍了因配置不当导致的问题，随后给出了具体的解决方案。

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The Struts dispatcher cannot be found. This is usually caused by using Struts tags without the associated filter. Struts tags are only usable when the request has passed through its servlet filter, which initializes the Struts dispatcher needed for this tag. - [unknown location]
开始配置的时候只有配置了下面的让过滤器只能接受act而不能接受jsp

<filter-mapping>
  <filter-name>struts2</filter-name>
  <url-pattern>*.act</url-pattern>
  <dispatcher>REQUEST</dispatcher>
  <dispatcher>FORWARD</dispatcher>
</filter-mapping>

补充完下面的就正常了

<filter-mapping>
  <filter-name>struts2</filter-name>
  <url-pattern>*.jsp</url-pattern>
  <dispatcher>REQUEST</dispatcher>
  <dispatcher>FORWARD</dispatcher>
</filter-mapping>