异常启动过滤器struts2 - 尝试添加JAR，但结果相同 [英] Exception starting filter struts2 - tried adding JAR's, but same result

问题描述

以下是我遇到的错误：

SEVERE: Exception starting filter struts2
java.lang.NoClassDefFoundError: com/opensymphony/xwork2/config/FileManagerProvider
    at org.apache.struts2.dispatcher.Dispatcher.init_FileManager(Dispatcher.java:336)
    at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:465)
    at org.apache.struts2.dispatcher.FilterDispatcher.init(FilterDispatcher.java:193)
    at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:295)
    at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:424)
    at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:115)
    at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4072)
    at org.apache.catalina.core.StandardContext.start(StandardContext.java:4726)
    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:799)
    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:779)
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:601)
    at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:675)
    at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:601)
    at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:502)
    at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1317)
    at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:324)
    at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:142)
    at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1065)
    at org.apache.catalina.core.StandardHost.start(StandardHost.java:840)
    at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1057)
    at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463)
    at org.apache.catalina.core.StandardService.start(StandardService.java:525)
    at org.apache.catalina.core.StandardServer.start(StandardServer.java:754)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:595)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
Caused by: java.lang.ClassNotFoundException: com.opensymphony.xwork2.config.FileManagerProvider
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526)
    ... 30 more

JAR列表：

antlr-2.7.6.jar
commons-beanutils-1.8.3.jar
commons-collections-3.2.1.jar
commons-digester-2.1.jar
commons-fileupload-1.3.jar
commons-logging-1.1.1.jar
dom4j-1.6.1.jar
ejb3-persistence-1.0.2.GA.jar
freemarker-2.3.16.jar
hibernate-annotations-3.2.1.ga.jar
hibernate-commons-annotations-3.3.0.ga.jar
hibernate-core-4.2.1.Final.jar
hsqldb-2.0.0.jar
javassist-3.12.1.GA.jar
jta-1.1.jar
log4j-1.2.15.jar
mysql-connector-java-5.1.21.jar
ognl-2.7.3.jar
slf4j-api-1.6.1.jar
slf4j-log4j12-1.7.5.jar
struts2-core-2.3.14.3.jar
xwork-2.1.3.jar

我的web.xml是这样的：

And my web.xml is like this:

<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>

我在这个论坛上阅读后尝试了很多东西：

I have tried lot of things after reading on this forum:

1. 尝试了不同版本的JAR。


2. 手动将WAR部署到Tomcat中。


3. 同样将servlet-api JAR放入lib文件夹（尽管它存在于服务器lib中） 。


4. 阅读Tomcat日志，发现没什么不同。 （请告诉我，我也可以粘贴）

1. Tried different versions of JAR.
2. Manually deployed WAR into Tomcat.
3. Placed the servlet-api JAR into the lib folder as well ( although it being present in the server lib).
4. Read the Tomcat logs, found nothing different. ( Please let me know, I can paste those as well)

但他们都没有帮助。所以，不得已，我在这里发帖。

But none of them have helped. So, last resort, I am posting it here.

推荐答案

因为你使用的是Struts 2.3 ，

Since you are using Struts 2.3,

不推荐使用FilterDispatcher 。你必须使用StrutsPrepareAndExecuteFilter（或它的小兄弟）。

FilterDispatcher is deprecated. You MUST use StrutsPrepareAndExecuteFilter (or its little brothers).

来自官方文档

已过时即可。 自Struts 2.1.3起，使用 StrutsPrepareAndExecuteFilter 或 StrutsPrepareFilter 和 StrutsExecuteFilter 如果需要使用ActionContextCleanUp过滤器

Deprecated. Since Struts 2.1.3, use StrutsPrepareAndExecuteFilter instead or StrutsPrepareFilter and StrutsExecuteFilter if needing using the ActionContextCleanUp filter in addition to this one

然后改变这个

<!-- Struts < 2.1.3 -->
<filter-class>
    org.apache.struts2.dispatcher.FilterDispatcher
</filter-class>

到此：

<!-- Struts >= 2.1.3 and < 2.5 -->
<filter-class>
     org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
</filter-class>

请注意，从2.5开始，它将改为：

Note that, from 2.5, it would be instead:

<!-- Struts >= 2.5 -->
<filter-class>
     org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter
</filter-class>

这篇关于异常启动过滤器struts2 - 尝试添加JAR，但结果相同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！