Netbeans错误：异常启动过滤器struts2 ClassNotFoundException：org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter [重复]

Question

我已经运行了使用 Struts 完成的 Web 应用程序。我无法运行应用程序我在启动 Apache tomcat 错误时遇到了错误，而在运行 Web 应用程序时它也会抛出错误。我已经在下面发布了错误日志。

启动 Apache Tomcat 服务器时出错：

    Feb 04, 2016 3:19:55 PM org.apache.catalina.core.StandardContext filterStart
SEVERE: Exception starting filter struts2
java.lang.ClassNotFoundException: org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1714)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1559)
    at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:532)
    at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:514)
    at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:133)
    at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:257)
    at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:383)
    at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:104)
    at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4650)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5306)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:633)
    at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:657)
    at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1637)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
    at java.util.concurrent.FutureTask.run(FutureTask.java:262)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:744)

运行 Web 应用程序时出错：

 Undeploying ...
undeploy?path=/Loyalty4Salon
OK - Undeployed application at context path /Loyalty4Salon
In-place deployment at /home/revathy/Documents/Esa netbeans/loyalty_salon/loyalty_salon/build/web
Deployment is in progress...
deploy?config=file%3A%2Ftmp%2Fcontext2062383266810619779.xml&path=/Loyalty4Salon
FAIL - Deployed application at context path /Loyalty4Salon but context failed to start
/home/revathy/Documents/Esa netbeans/loyalty_salon/loyalty_salon/nbproject/build-impl.xml:1125: The module has not been deployed.
See the server log for details.
BUILD FAILED (total time: 2 seconds)

这是struts-config.xml：

<?xml version="1.0" encoding="UTF-8" ?>

<!DOCTYPE struts-config PUBLIC
          "-//Apache Software Foundation//DTD Struts Configuration 1.3//EN"
          "http://jakarta.apache.org/struts/dtds/struts-config_1_3.dtd">
<struts-config>
    <form-beans>
    
    </form-beans>
    
    <global-exceptions>
    
    </global-exceptions>

    <global-forwards>
        <forward name="welcome"  path="/Welcome.do"/>
    </global-forwards>

    <action-mappings>
        <action path="/Welcome" forward="/welcomeStruts.jsp"/>
    </action-mappings>
    
    <controller processorClass="org.apache.struts.tiles.TilesRequestProcessor"/>

    <message-resources parameter="com/myapp/struts/ApplicationResource"/>    
    
    <!-- ========================= Tiles plugin ===============================-->
    <!--
    This plugin initialize Tiles definition factory. This later can takes some
    parameters explained here after. The plugin first read parameters from
    web.xml, thenoverload them with parameters defined here. All parameters
    are optional.
    The plugin should be declared in each struts-config file.
    - definitions-config: (optional)
    Specify configuration file names. There can be several comma
    separated file names (default: ?? )
    - moduleAware: (optional - struts1.1)
    Specify if the Tiles definition factory is module aware. If true
    (default), there will be one factory for each Struts module.
    If false, there will be one common factory for all module. In this
    later case, it is still needed to declare one plugin per module.
    The factory will be initialized with parameters found in the first
    initialized plugin (generally the one associated with the default
    module).
    true : One factory per module. (default)
    false : one single shared factory for all modules
    - definitions-parser-validate: (optional)
    Specify if xml parser should validate the Tiles configuration file.
    true : validate. DTD should be specified in file header (default)
    false : no validation

    Paths found in Tiles definitions are relative to the main context.
    -->
    <plug-in className="org.apache.struts.tiles.TilesPlugin" >
        <set-property property="definitions-config" value="/WEB-INF/tiles-defs.xml" />      
        <set-property property="moduleAware" value="true" />
    </plug-in>
    
    <!-- ========================= Validator plugin ================================= -->
    <plug-in className="org.apache.struts.validator.ValidatorPlugIn">
        <set-property
            property="pathnames"
            value="/WEB-INF/validator-rules.xml,/WEB-INF/validation.xml"/>
    </plug-in>
  
</struts-config>

这是struts.xml：

        <result name="logoutPage">/sa_login.jsp</result> 
        <result name="success">/coupon_index.jsp</result>
        <result name="error">/error.jsp</result>
    </action>
    <action name="c_cpnDetail"
            class="com.Customer.Action"
            method="c_cpnDetail" > 
        <result name="logoutPage">/sa_login.jsp</result>
        <result name="success">/cmpny_couponDetail.jsp</result>
        <result name="error">/error.jsp</result>
    </action> 
    <action name="coupon_index"
            class="com.Customer.Action"
            method="couponCode" > 
        <result name="logoutPage">/sa_login.jsp</result>
        <result name="success">/coupon_create.jsp</result>
        <result name="error">/error.jsp</result>
    </action> 
    <action name="createCoupon"
            class="com.Customer.Action"
            method="create_Coupon" >
          
        <interceptor-ref name="tokenSession"/>                  
        <interceptor-ref name="fileUpload">
            <param name="allowedTypes">
                image/png,image/gif,image/jpeg,image/pjpeg
            </param>
        </interceptor-ref>
        <interceptor-ref name="defaultStack"></interceptor-ref> 
        <result name="invalid.token" type="redirect">coupon</result>
        <result name="logoutPage">/sa_login.jsp</result> 
        <result name="success">/coupon_index.jsp</result>
        <result name="error">/error.jsp</result>
        <result name="input">/ImageFileUploadError.jsp</result>
    </action>  
  
    <!--<action name="couponAssignPage"
    class="com.Customer.Action"
     method="advSrch" > 
        <result name="success">./coupon_Assign.jsp</result>
        <result name="error">./error.jsp</result>
    </action> -->
   
    <action name="couponAssignPage"
            class="com.Customer.Action"
            method="cpn_assignPage" > 
        <result name="logoutPage">/sa_login.jsp</result>
        <result name="success">/coupon_Assign.jsp</result>
        <result name="error">/error.jsp</result>
    </action>
    <action name="cpn_getUsers"
            class="com.Customer.Action"
            method="cpn_getUsers" > 
        <result name="logoutPage">/sa_login.jsp</result>
        <result name="success">/coupon_Assign.jsp</result>
        <result name="error">/error.jsp</result>
    </action>
   
    <action name="coupon_assign"
            class="com.Customer.Action"
            method="assign_coupon" > 
        <result name="logoutPage">/sa_login.jsp</result>
        <result name="success">/coupon_index.jsp</result>
        <result name="error">/error.jsp</result>
    </action>
   
   
    <action name="couponAssign"
            class="com.Customer.Action"
            method="coupon_assign"> 
        <result name="logoutPage">/sa_login.jsp</result>
        <result name="success">/coupon_index.jsp</result>
        <result name="error">/error.jsp</result>
    </action> 
    <action name="csvExport"
            class="com.Customer.Action"
            method="csvExport"> 
        <result name="logoutPage">/sa_login.jsp</result>
        <result name="success">/csvDownload.jsp</result>
      
        <result name="error">/error.jsp</result>
    </action>        
    <action name="search_usr"
            class="com.Customer.Action"
            method="srch_usr1" > 
        <result name="logoutPage">/sa_login.jsp</result>
        <result name="success">/coupon_assign.jsp</result>
        <result name="error">/error.jsp</result>
    </action>
    <action name="deleteCoupon"
            class="com.Customer.Action"
            method="dltCoupon" > 
        <result name="logoutPage">/sa_login.jsp</result>
        <result name="success">/coupon_index.jsp</result>
        <result name="error">/error.jsp</result>
    </action> 
    <action name="del_cpn"
            class="com.Customer.Action"
            method="bulk_cpn_del" > 
        <result name="logoutPage">/sa_login.jsp</result>
        <result name="success">/coupon_index.jsp</result>
        <result name="error">/error.jsp</result>
    </action>
    <action name="c_edit"
            class="com.Customer.Action"
            method="editCouponretrieve" > 
        <result name="logoutPage">/sa_login.jsp</result>
        <result name="success">/coupon_edit.jsp</result>
        <result name="error">/error.jsp</result>
    </action> 
    <action name="editCoupon"
            class="com.Customer.Action"
            method="editCoupon" > 
        <interceptor-ref name="fileUpload">
            <param name="allowedTypes">
                image/png,image/gif,image/jpeg,image/pjpeg
            </param>
        </interceptor-ref>
        <interceptor-ref name="defaultStack"></interceptor-ref>
        <result name="logoutPage">/sa_login.jsp</result>             
        <result name="success">/coupon_index.jsp</result>
        <result name="error">/error.jsp</result>
        <result name="input">/ImageFileUploadError.jsp</result>
    </action>
    <action name="couponSearchPage"
            class="com.Customer.Action"
            method="couponSearchPage" > 
        <result name="logoutPage">/sa_login.jsp</result>
        <result name="success">/Coupon_search.jsp</result>
        <result name="error">/error.jsp</result>
    </action>
     
    <action name="couponSearch"
            class="com.Customer.Action"
            method="coupon_search" > 
        <result name="logoutPage">/sa_login.jsp</result>
        <result name="success">/coupon_searchResult.jsp</result>
        <result name="error">/error.jsp</result>
    </action>
   
   
   
    <!-- Super Admin-->
    <action name="create_company"
            class="com.Customer.Action"
            method="create_company" > 
        <result name="success">/sa_cmpny_create.jsp</result>
        <result name="error">/error.jsp</result>
        <result name="logoutPage">/sa_login.jsp</result>
    </action>
    <action name="gen_key"
            class="com.Customer.Action"
            method="couponCode" > 
        <result name="success">/sa_cmpny_create.jsp</result>
        <result name="error">/error.jsp</result>
        <result name="logoutPage">/sa_login.jsp</result>
    </action> 
    <action name="sa_cmpnyDetail"
            class="com.Customer.Action"
            method="sa_cmpnyDetail" > 
        <result name="success">/sa_cmpnyDetail.jsp</result>
        <result name="error">/error.jsp</result>
        <result name="logoutPage">/sa_login.jsp</result>
    </action> 
    <action name="sa_userDetail"
            class="com.Customer.Action"
            method="sa_userDetail" > 
        <result name="success">/sa_cmpnyDetail.jsp</result>
        <result name="error">/error.jsp</result>
        <result name="logoutPage">/sa_login.jsp</result>
    </action>
    <action name="sa_createCmpny"
            class="com.Customer.Action"
            method="sa_createCmpny" > 
        <result name="invalid.token" type="redirect">sa_companyList</result>
        <result name="logoutPage">/sa_login.jsp</result>
        <interceptor-ref name="tokenSession"/> 
        <interceptor-ref name="defaultStack"></interceptor-ref> 
        <result name="success">/sa_cmpny_list.jsp</result>
        <result name="error">/error.jsp</result>
        <result name="logoutPage">/sa_login.jsp</result>
    </action> 
    <action name="sa_companyList"
            class="com.Customer.Action"
            method="sa_listCmpny"> 
        <result name="success">/sa_cmpny_list.jsp</result>
        <result name="logoutPage">/sa_login.jsp</result>
        <result name="error">/error.jsp</result>
    </action>
    <action name="sa_subCmpnyList"
            class="com.Customer.Action"
            method="sa_listSubCmpny" > 
        <result name="success">/sa_subcmpny_list.jsp</result>
        <result name="error">/error.jsp</result>
        <result name="logoutPage">/sa_login.jsp</result>
    </action>
    <action name="sa_cmpny_status"
            class="com.Customer.Action"
            method="sa_cmpny_status" > 
        <result name="success">/sa_cmpny_list.jsp</result>
        <result name="error">/error.jsp</result>
        <result name="logoutPage">/sa_login.jsp</result>
    </action> 
    <action name="sa_subcmpny_status"
            class="com.Customer.Action"
            method="sa_subcmpny_status" > 
        <result name="success">/sa_subcmpny_list.jsp</result>
        <result name="error">/error.jsp</result>
        <result name="logoutPage">/sa_login.jsp</result>
    </action> 
    <action name="sa_cmpny_delete"
            class="com.Customer.Action"
            method="sa_cmpny_delete" > 
        <result name="success">/sa_cmpny_list.jsp</result>
        <result name="error">/error.jsp</result>
        <result name="logoutPage">/sa_login.jsp</result>
    </action> 
    <action name="sa_subcmpny_delete"
            class="com.Customer.Action"
            method="sa_subcmpny_delete" > 
        <result name="success">/sa_subcmpny_list.jsp</result>
        <result name="error">/error.jsp</result>
        <result name="logoutPage">/sa_login.jsp</result>
    </action> 
    <action name="sa_cmpny_editRetrieve"
            class="com.Customer.Action"
            method="sa_cmpny_editRetrieve" > 
        <result name="success">/sa_cmpny_edit.jsp</result>
        <result name="error">/error.jsp</result>
        <result name="logoutPage">/sa_login.jsp</result>
    </action> 
    <action name="sa_subcmpny_editRetrieve"
            class="com.Customer.Action"
            method="sa_subcmpny_editRetrieve" > 
        <result name="success">/sa_subcmpny_edit.jsp</result>
        <result name="error">/error.jsp</result>
        <result name="logoutPage">/sa_login.jsp</result>
    </action> 
    <action name="sa_cmpny_edit"
            class="com.Customer.Action"
            method="sa_cmpny_edit" > 
        <result name="success">/sa_cmpny_list.jsp</result>
        <result name="error">/error.jsp</result>
        <result name="logoutPage">/sa_login.jsp</result>
    </action>
    <action name="sa_cmpny_planedit"
            class="com.Customer.Action"
            method="sa_cmpny_planedit" > 
        <result name="success">/sa_cmpny_list.jsp</result>
        <result name="error">/error.jsp</result>
        <result name="logoutPage">/sa_login.jsp</result>
    </action> 
    <action name="sa_subcmpny_edit"
            class="com.Customer.Action"
            method="sa_subcmpny_edit" > 
        <result name="logoutPage">/sa_login.jsp</result>
        <result name="success">/sa_subcmpny_list.jsp</result>
        <result name="error">/error.jsp</result>
    </action> 
    <action name="sa_login"
            class="com.Customer.Action"
            method="sa_login" > 
        <interceptor-ref name="tokenSession"/> 
        <interceptor-ref name="defaultStack"></interceptor-ref>
        <result name="invalid.token" type="redirect">/sa_login.jsp</result> 
        <result name="sa_success">/sa_start.jsp</result>
        <result name="success">/start.jsp</result>
        <result name="logoutPage">/sa_login.jsp</result>
        <!--<result name="graph">./Graph.jsp</result>-->
        <result name="error">/error.jsp</result>
    </action> 
   
    <action name="logout"
            class="com.Customer.Action"
            method="logout" > 
        <result name="sa_success">/sa_start.jsp</result>
        <result name="success">/sa_login.jsp</result>
        <!--<result name="success">/sample.jsp</result>-->
        <result name="Success">/start.jsp</result>
        <result name="error">/error.jsp</result>
    </action>
   
    <action name="sa_logout"
            class="com.Customer.Action"
            method="sa_logout">          
        <result name="success">/sa_login.jsp</result>           
        <result name="error">/error.jsp</result>
    </action>
   
    <action name="settings"
            class="com.Customer.Action"
            method="settings" > 
        <result name="success">/sa_start.jsp</result>
        <result name="logoutPage">/sa_login.jsp</result>
        <result name="error">/error.jsp</result>
    </action>
   
    
    
    <!--REV SOURCE-->
    <!--Deals action result -->  
    <action name="importCsv" class="com.Customer.Action" method="importcsv">
        <result name="success">/index.jsp</result>
        <result name="error">/error.jsp</result>
        <result name="wrong_csv">/index.jsp</result>
        <result name="logoutPage">/sa_login.jsp</result>
    </action>
              
    <action name="click_Deals"
            class="com.Customer.Struts_Action"
            method="click_Deals" > 
        <result name="logoutPage">/sa_login.jsp</result>
        <result name="success">/list_Deals.jsp</result>
        <result name="error">/error.jsp</result>
    </action>
   
    <action name="addDeals"
            class="com.Customer.Deals"
            method="execute"> 
        <interceptor-ref name="tokenSession"/>                    
        <interceptor-ref name="fileUpload">
            <param name="allowedTypes">
                image/png,image/gif,image/jpeg,image/pjpeg
            </param>
        </interceptor-ref>
        <interceptor-ref name="defaultStack"></interceptor-ref> 
        <result name="invalid.token" type="redirect">click_Deals</result>
        <result name="logoutPage">/sa_login.jsp</result>
        <result name="success">/Deals_submit.jsp</result>
        <result name="reached-deals">/list_Deals.jsp</result>
        <result name="input">/ImageFileUploadError.jsp</result>
    </action>  
  
    <action name="addDeals_first"
            class="com.Customer.Deals"
            method="execute_list">
        <result name="logoutPage">/sa_login.jsp</result>
        <result name="success">/Deals_submit.jsp</result>
        <result name="reached-deals">/list_Deals.jsp</result>
        <result name="error">/error.jsp</result>
    </action>    
 
 
    <action name="d_status"
            class="com.Customer.Struts_Action"
            method="d_status" > 
        <result name="logoutPage">/sa_login.jsp</result>
        <result name="success">/list_Deals.jsp</result>
        <result name="error">/error.jsp</result>
    </action>
    <action name="activate_deal"
            class="com.Customer.Struts_Action"
            method="bulk_activate_deal" > 
        <result name="logoutPage">/sa_login.jsp</result>
        <result name="success">/list_Deals.jsp</result>
        <result name="error">/error.jsp</result>
    </action>
    <action name="inactivate_deal"
            class="com.Customer.Struts_Action"
            method="bulk_inactivate_deal" >
        <result name="logoutPage">/sa_login.jsp</result> 
        <result name="success">/list_Deals.jsp</result>
        <result name="error">/error.jsp</result>
    </action>
   
   
    <action name="edit_Deal"
            class="com.Customer.Struts_Action"
            method="edit_Deal">
        <result name="logoutPage">/sa_login.jsp</result>
        <result name="success">/Deals_edit.jsp</result>
        <result name="error">/error.jsp</result>
    </action>
  
  
    <action name="editDealsData"
            class="com.Customer.Struts_Action"
            method="edit_Deal_Data">                    
        <interceptor-ref name="fileUpload">
            
            <param name="allowedTypes">
                image/png,image/gif,image/jpeg,image/pjpeg
            </param>
        </interceptor-ref>
        <interceptor-ref name="defaultStack"></interceptor-ref>  
        <result name="logoutPage">/sa_login.jsp</result>
        <result name="success">/list_Deals.jsp</result>
        <result name="input">/ImageFileUploadError.jsp</result>
    </action>
  
    <action name="Delete_Deal"
            class="com.Customer.Struts_Action"
            method="Delete_Deal">
        <result name="logoutPage">/sa_login.jsp</result>
        <result name="success">/list_Deals.jsp</result>
        <result name="error">/error.jsp</result>
    </action>
    <action name="del_deal"
            class="com.Customer.Struts_Action"
            method="bulk_del_deal">
        <result name="logoutPage">/sa_login.jsp</result>
        <result name="success">/list_Deals.jsp</result>
        <result name="error">/error.jsp</result>
    </action>
  
    
    

</struts>

Answer 1

如果没有 Struts2 core 库，您将无法部署 Struts2 Web 应用程序。在 web.xml 中声明的过滤器类在 web 应用程序类加载器的类路径中找不到。

<web-app id="WebApp_9" version="2.4"
    xmlns="http://java.sun.com/xml/ns/j2ee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

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

    <!-- ... -->

</web-app>

如何解决此类问题。首先，您可以尝试在互联网上搜索课程org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter。即使谷歌的第一个结果指向web.xml，也有很多可用的信息，但没有关于框架使用的核心库的信息。好的，尝试在struts.apache.org 上搜索类名，它给出了第二个结果Create Struts 2 Web Application Using Maven To Manage Artifacts and To Build The Application。它是使用 Maven 作为构建工具创建的。如果你不熟悉它，你应该阅读maven.apache.org。在pom.xml 中它使用依赖项

<dependency>
    <groupId>org.apache.struts</groupId>
    <artifactId>struts2-core</artifactId>
    <version>X.X.X.X</version>
</dependency>

当然用当前的 Struts 2 版本替换 X.X.X.X。马文 将获得 struts2-core jar 和其他 jar 文件 struts2-core 需要（传递依赖）。

Netbeans 完全支持 Maven：

NetBeans 自 6.7 起包含完整的 Maven 支持，包括 7.0+ 中的 Maven 3 支持。您可以在 IDE 中打开任何 Maven 项目并立即开始编码。

有关详细信息，请参阅NetBeans.org wiki page。

如果您不知道如何为您的项目找到依赖项，您应该阅读常见问题解答。

How to find dependencies on public Maven repositories?

You could use the following search engines:

• http://search.maven.org
• http://repository.apache.org
• http://mvnrepository.com

在这里，您将找到search for struts2-core 所有必需的库，具体取决于您需要的版本2.3.12 我推荐目前最新的稳定版本2.3.24.1。

您可以在您的项目中使用 Maven 来下载所需的库并将它们添加到依赖项中。如果您决定手动管理项目依赖项，您可以在 maven 站点上获取有关 struts2-core 依赖项的信息。