springmvc容器，ssh执行个人见解

不管我们用的是springmvc+jpa springmvc+hibernate 或者搭载其他的关系模型框架，ssh 框架 tomcat作为服务器 首先读取的是项目WEB-INF下面的web.xml文件，因为框架不同，因而web.xml文件中的配置差异很大。

我们首先来看springmvc框架的web.xml配置文件 每一个我做一个解读吧。

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="WebApp_ID" version="2.5">
<display-name>cs</display-name>

<context-param>
<param-name>contextConfigLocation</param-name>
<param-value> /WEB-INF/classes/applicationConfig.xml
</param-value>
</context-param>

<listener>
<listener-class>com.ece.ec.framework.SetupListener</listener-class>
</listener>


<filter>
<filter-name>prestruts</filter-name>
<filter-class>com.ece.ec.framework.PreStrutsFilter</filter-class>
</filter>


<filter-mapping>
<filter-name>prestruts</filter-name>
<url-pattern>/docs/*</url-pattern>
<url-pattern>*.html</url-pattern>
<url-pattern>*.jsp</url-pattern>
</filter-mapping>


<filter>
<filter-name>encoding-filter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true </param-value>
</init-param>
</filter>


<filter-mapping>
<filter-name>encoding-filter</filter-name>
<url-pattern>*.html</url-pattern>
<url-pattern>/print/*</url-pattern>
<url-pattern>*.jsp</url-pattern>
</filter-mapping>

<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> //这里是springmvc启动的核心
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value></param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>*.html</url-pattern>
<url-pattern>/print/*</url-pattern>
</servlet-mapping>

<servlet>
<!-- 指定DWR核心Servlet的名字 -->
<servlet-name>dwr-invoker</servlet-name>
<!-- 指定DWR核心Servlet的实现类 -->
<servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class>
<!-- 指定配置文件 -->
<init-param>
<param-name>config</param-name>
<!-- 如果有多个用","分开 -->
<param-value>
/WEB-INF/classes/dwr.xml
</param-value>
</init-param>
<!-- 指定DWR核心Servlet处于调试状态 -->
<init-param>
<param-name>debug</param-name>
<param-value>true</param-value>
</init-param>
<init-param>
<param-name>crossDomainSessionSecurity</param-name>
<param-value>false</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>dwr-invoker</servlet-name>
<url-pattern>/dwr/*</url-pattern>
</servlet-mapping>




<session-config>
<session-timeout>30</session-timeout>
</session-config>


<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>


<error-page>
<error-code>500</error-code>
<location>/system/error.html</location>
</error-page>
<error-page>
<error-code>400</error-code>
<location>/system/error.html</location>
</error-page>
<error-page>
<error-code>403</error-code>
<location>/system/error.html</location>
</error-page>
</web-app>