大家都知道，在常用的ssh框架开发中，web.xml是全局配置文件，那么在该xml文件中都需要配置什么？
1.配置actionservlet的初始化路径
<servlet>
<servlet-name>action</servlet-name>
<servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
<init-param>
<param-name>config</param-name>
<param-value>
/WEB-INF/struts-config.xml,
/WEB-INF/struts-config.xml(可以配置多个文件，中间用,隔开)
</param-value>
</init-param>
<init-param>
<param-name>debug</param-name>
<param-value>3</param-value>
</init-param>
<init-param>
<param-name>detail</param-name>
<param-value>3</param-value>
</init-param>
<load-on-startup>0</load-on-startup>
</servlet>
相应的action的映射文件：
<servlet-mapping>
<servlet-name>action</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
相应的 <servlet-name>action</servlet-name>必须一致。
2.配置过滤器的初始化路径：
<filter>
<filter-name>encoding</filter-name>
<filter-class>过滤文件的处理类</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
3.配置欢迎界面：
<welcome-file-list>
<welcome-file>welcome.jsp</welcome-file>
<welcome-file>welcome.jsp</welcome-file>
</welcome-file-list>
4.配置404错误界面：
<error-page>
<error-code>404</error-code>
<location>/404.jsp</location>
</error-page>
5.配置500错误界面：
<error-page>
<error-code>500</error-code>
<location>/500.jsp</location>
</error-page>
6.配置ServletException错误界面：
<error-page>
<exception-type>javax.servlet.ServletException</exception-type>
<location>/systemError.jsp</location>
</error-page>
7.设置session超时：
<session-config>
<!-- 以分钟为单位 -->
<session-timeout>15</session-timeout>
</session-config>
8.禁用scriptlet：
<jsp-config>
<jsp-property-group>
<url-pattern>*.jsp</url-pattern>
<scripting-invalid>true</scripting-invalid>
</jsp-property-group>
</jsp-config>
9.Spring配置文件
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value> WEB-INF/classes/configs/applicationContext.xml</param-value>
</context-param>
<servlet>
<servlet-name>SpringContextServlet</servlet-name>
<servlet-class>org.springframework.web.context.ContextLoaderServlet</servlet-class>
<load-on-startup>2</load-on-startup>
</servlet>
10.登陆过滤
<filter>
<filter-name>loginFilter</filter-name>
<filter-class>com.filter.LoginFilter</filter-class>
<init-param>
<param-name>sessionName</param-name>
<param-value>user</param-value>
</init-param>
<init-param>
<param-name>loginURL</param-name>
<param-value>/cdp/pages/login/login.jsp</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>loginFilter</filter-name>
<url-pattern>*.do</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>loginFilter</filter-name>
<url-pattern>*.jsp</url-pattern>
</filter-mapping>
11.数据库连接池
<servlet>
<servlet-name>ServletConfigurator</servlet-name>
<servlet-class>org.logicalcobwebs.proxool.configuration.ServletConfigurator</servlet-class>
<init-param>
<param-name>xmlFile</param-name>
<param-value>WEB-INF/classes/configs/proxool.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
12.hibernate配置
<filter>
<filter-name>hibernateFilter</filter-name>
<filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class>
<init-param>
<param-name>singleSession</param-name>
<param-value>true</param-value>
</init-param>
<init-param>
<param-name>flushMode</param-name>
<param-value>AUTO</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>hibernateFilter</filter-name>
<url-pattern>*.mmg</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>hibernateFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
暂时就配置这么些，如果还有什么其他配置，欢迎各位留言。将及时添加！！！
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