Struts2学习笔记一：web.xml的配置

WEB项目要使用Struts2框架进行开发的时候，必须将struts2框架配置到该WEB项目中。即在 WebContent/WEB-INF/web.xml 文件中做出如下配置：

        <!-- 为项目配置Struts2框架 --><span style="white-space:pre"></span><filter><span style="white-space:pre"></span><filter-name>myStruts</filter-name><!-- <span style="font-family: Arial, Helvetica, sans-serif;"><span style="white-space:pre"></span>1. Struts2的核心过滤器，由该过滤器判断是是否调用Action以及调用哪个Action</span><span style="font-family: Arial, Helvetica, sans-serif;"><span style="white-space:pre"></span>2. 这个具体值是哪个类，可参考下载的struts2的源文件中的 struts-2.3.24.1\docs\docs\webxml.html</span><span style="font-family: Arial, Helvetica, sans-serif;"><span style="white-space:pre"></span>--></span><span style="font-family: Arial, Helvetica, sans-serif;"><span style="white-space:pre"></span><filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class></span><span style="font-family: Arial, Helvetica, sans-serif;"><span style="white-space:pre"></span><!-- 设置初始化参数 --></span><span style="font-family: Arial, Helvetica, sans-serif;"><span style="white-space:pre"></span><init-param></span><span style="font-family: Arial, Helvetica, sans-serif;"><span style="white-space:pre"></span><param-name>config</param-name></span><span style="font-family: Arial, Helvetica, sans-serif;"><span style="white-space:pre"></span><!-- Struts2框架自动加载的系列配置文件，如果有多个配置文件，中间用逗号分隔 --></span><span style="font-family: Arial, Helvetica, sans-serif;"><span style="white-space:pre"></span><param-value></param-value></span><span style="font-family: Arial, Helvetica, sans-serif;"><span style="white-space:pre"></span></init-param></span><span style="font-family: Arial, Helvetica, sans-serif;"><span style="white-space:pre"></span><init-param></span><span style="font-family: Arial, Helvetica, sans-serif;"><span style="white-space:pre"></span><param-name>actionPackages</param-name></span><span style="font-family: Arial, Helvetica, sans-serif;"><span style="white-space:pre"></span><!-- </span><span style="font-family: Arial, Helvetica, sans-serif;"><span style="white-space:pre"></span>Struts2框架要扫描的包</span><span style="font-family: Arial, Helvetica, sans-serif;"><span style="white-space:pre"></span>1.默认情况下Struts2只会扫描org.apache.Struts2.static包，以获得相应的静态资源</span><span style="font-family: Arial, Helvetica, sans-serif;"><span style="white-space:pre"></span>2.如果再需要指定其它一个或多个包，则需要通过该参数添加</span><span style="font-family: Arial, Helvetica, sans-serif;"><span style="white-space:pre"></span>3.多个包之间通过逗号分隔</span><span style="font-family: Arial, Helvetica, sans-serif;"><span style="white-space:pre"></span>参数的作用：</span><span style="font-family: Arial, Helvetica, sans-serif;"><span style="white-space:pre"></span>1. 如果使用了Struts2的注释功能，则需指定要扫描哪些包，以使用注释功能真正启用 </span><span style="font-family: Arial, Helvetica, sans-serif;"><span style="white-space:pre"></span>--></span><span style="font-family: Arial, Helvetica, sans-serif;"><span style="white-space:pre"></span><param-value></param-value></span><span style="font-family: Arial, Helvetica, sans-serif;"><span style="white-space:pre"></span></init-param></span><span style="font-family: Arial, Helvetica, sans-serif;"><span style="white-space:pre"></span><span style="white-space:pre"></span><init-param></span><span style="font-family: Arial, Helvetica, sans-serif;"><span style="white-space:pre"></span><param-name>configProviders</param-name></span><span style="font-family: Arial, Helvetica, sans-serif;"><span style="white-space:pre"></span><!-- 用户自定义的实现了ConfigurationProviderod接口的类 --></span><span style="font-family: Arial, Helvetica, sans-serif;"><span style="white-space:pre"></span><param-value></param-value></span><span style="font-family: Arial, Helvetica, sans-serif;"><span style="white-space:pre"></span></init-param></span><span style="font-family: Arial, Helvetica, sans-serif;"><span style="white-space:pre"></span></filter></span><span style="font-family: Arial, Helvetica, sans-serif;"><span style="white-space:pre"></span><span style="white-space:pre"></span><filter-mapping></span><span style="font-family: Arial, Helvetica, sans-serif;"><span style="white-space:pre"></span><filter-name>myStruts</filter-name></span><span style="font-family: Arial, Helvetica, sans-serif;"><span style="white-space:pre"></span><!-- 设置哪些访问路径需要使用Struts2的核心过滤器 --></span><span style="font-family: Arial, Helvetica, sans-serif;"><span style="white-space:pre"></span><url-pattern>/*</url-pattern></span><span style="font-family: Arial, Helvetica, sans-serif;"><span style="white-space:pre"></span></filter-mapping></span>

根据具体需要修改或填充相关参数的值，即可为WEB项目提供struts2的支持。