struts2: The Struts dispatcher cannot be found

最新推荐文章于 2025-08-24 15:22:07 发布

转载最新推荐文章于 2025-08-24 15:22:07 发布 · 56 阅读

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原文链接：http://www.cnblogs.com/molao-doing/articles/3549074.html

文章标签：

#java #runtime

本文解决了Struts2中因配置不当导致的Struts标签无法正常工作的问题。通过调整URL模式匹配规则，确保请求能够正确地通过Struts的过滤器。

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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]
    at org.apache.struts2.views.jsp.TagUtils.getStack(TagUtils.java:60)
    at org.apache.struts2.views.jsp.StrutsBodyTagSupport.getStack(StrutsBodyTagSupport.java:44)
    at org.apache.struts2.views.jsp.ComponentTagSupport.doStartTag(ComponentTagSupport.java:48)
    at org.apache.jsp.constants.manager_005flogin_jsp._jspx_meth_s_005fproperty_005f0(manager_005flogin_jsp.java:211)
    at org.apache.jsp.constants.manager_005flogin_jsp._jspService(manager_005flogin_jsp.java:145)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:388)
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

经过分析得出 : <url-pattern>*.action</url-pattern>没有匹配到.jsp所以应该把*.action改成/*

    <filter>
       <filter-name>struts2</filter-name>
       <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
    </filter>
    
    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>*.action</url-pattern>
    </filter-mapping>

或者添加

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

问题解决

转载于:https://www.cnblogs.com/molao-doing/articles/3549074.html