ssm框架下web项目,web.xml配置文件的作用(详解)

1. web.xml中配置了CharacterEncodingFilter,配置这个是拦截所有的资源并设置好编号格式。

encoding设置成utf-8就相当于request.setCharacterEncoding("UTF-8");

foreEncoding设置成true就相当于response.setCharacterEncoding("UTF-8");

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

2. web.xml配置DispatcherServlet，配置这个是拦截所有请求，都交给springmvc转发

拦截所有的请求，并加载所有的ssm配置文件（路径为classpath:---）

<servlet>
 <servlet-name>mvc-dispatcher</servlet-name>
 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
 <init-param>
   <param-name>contextConfigLocation</param-name>
   <param-value>classpath:spring-*.xml</param-value>
 </init-param>
</servlet>
<servlet-mapping>
 <servlet-name>mvc-dispatcher</servlet-name>
 <url-pattern>/</url-pattern>
</servlet-mapping>

来源：http://www.cnblogs.com/winv758241/p/6889383.html