SSH整合(一)
strust2需要导入的jar包：
逐步加入ssh所需jar包的过程，先建立一个模拟的空项目，建一个文件夹config存放配置文件。
先导入核心jar包：struts2-core-2.1.8.1.jar，xwork-core-2.1.6.jar
然后启动
然后再web.xml配置strust核心过滤器即中央处理器：
<filter> <filter-name>strust2</filter-name> <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class> </filter> <filter-mapping> <filter-name>strust2</filter-name> <url-pattern>/*</url-pattern> </filter-mapping>
好了之后启动项目，发现报了如下异常：
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严重: Dispatcher initialization failedUnable to load configuration. - bean - jar:file:/C:/Tomcat%206.0/webapps/SSH/WEB-INF/lib/struts2-core-2.1.8.1.jar!/struts-default.xml:47:178at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:58)at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:374)at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:418)at org.apache.struts2.dispatcher.FilterDispatcher.init(FilterDispatcher.java:190)at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:295)at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:422)at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:115)at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3838)at org.apache.catalina.core.StandardContext.start(StandardContext.java:4488)at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546)at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1041)at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:964)at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:502)at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1277)at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:321)at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)at org.apache.catalina.core.StandardHost.start(StandardHost.java:785)at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)at org.apache.catalina.core.StandardService.start(StandardService.java:519)at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)at org.apache.catalina.startup.Catalina.start(Catalina.java:581)at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)at java.lang.reflect.Method.invoke(Method.java:597)at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)Caused by: Unable to load bean: type:org.apache.struts2.dispatcher.multipart.MultiPartRequest class:org.apache.struts2.dispatcher.multipart.JakartaMultiPartRequest - bean - jar:file:/C:/Tomcat%206.0/webapps/SSH/WEB-INF/lib/struts2-core-2.1.8.1.jar!/struts-default.xml:47:178at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register(XmlConfigurationProvider.java:221)at org.apache.struts2.config.StrutsXmlConfigurationProvider.register(StrutsXmlConfigurationProvider.java:101)at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:169)at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:55)... 30 moreCaused by: java.lang.NoClassDefFoundError: org/apache/commons/fileupload/FileUploadExceptionat java.lang.Class.getDeclaredConstructors0(Native Method)at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)at java.lang.Class.getDeclaredConstructors(Class.java:1836)at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register(XmlConfigurationProvider.java:211)... 33 moreCaused by: java.lang.ClassNotFoundException: org.apache.commons.fileupload.FileUploadExceptionat org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1516)at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1361)at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)... 37 more?仔细观察异常，发现是：
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java.lang.ClassNotFoundException: org.apache.commons.fileupload.FileUploadException
所以需要导入该类所在的jar包，即是：commons-fileupload-1.2.1.jar，导入后清理下项目缓存，继续重启，发现又出现了另外的异常：
严重: Dispatcher initialization failedUnable to load configuration. - bean - jar:file:/C:/Tomcat%206.0/webapps/SSH/WEB-INF/lib/struts2-core-2.1.8.1.jar!/struts-default.xml:53:89at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:58)at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:374)at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:418)at org.apache.struts2.dispatcher.FilterDispatcher.init(FilterDispatcher.java:190)at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:295)at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:422)at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:115)at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3838)at org.apache.catalina.core.StandardContext.start(StandardContext.java:4488)at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546)at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1041)at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:964)at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:502)at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1277)at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:321)at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)at org.apache.catalina.core.StandardHost.start(StandardHost.java:785)at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)at org.apache.catalina.core.StandardService.start(StandardService.java:519)at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)at org.apache.catalina.startup.Catalina.start(Catalina.java:581)at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)at java.lang.reflect.Method.invoke(Method.java:597)at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)Caused by: Unable to load bean: type: class:org.apache.struts2.views.freemarker.FreemarkerManager - bean - jar:file:/C:/Tomcat%206.0/webapps/SSH/WEB-INF/lib/struts2-core-2.1.8.1.jar!/struts-default.xml:53:89at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register(XmlConfigurationProvider.java:221)at org.apache.struts2.config.StrutsXmlConfigurationProvider.register(StrutsXmlConfigurationProvider.java:101)at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:169)at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:55)... 30 moreCaused by: java.lang.NoClassDefFoundError: freemarker/template/SimpleHashat java.lang.Class.getDeclaredConstructors0(Native Method)at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)at java.lang.Class.getDeclaredConstructors(Class.java:1836)at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register(XmlConfigurationProvider.java:211)... 33 moreCaused by: java.lang.ClassNotFoundException: freemarker.template.SimpleHashat org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1516)at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1361)at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)... 37 more
?同样的发现缺少的是：
Caused by: java.lang.ClassNotFoundException: freemarker.template.SimpleHash
按照刚才的解决方案，导入所需jar包：freemarker-2.3.15.jar，继续重启，发现没有出现异常了。
现在strust2所需的jar包到目前为止只有4个：struts2-core-2.1.8.1.jar，xwork-core-2.1.6.jar，commons-fileupload-1.2.1.jar，freemarker-2.3.15.jar，下面在整合spring的时候会发现还需要一些，逐步加进去
