ssm框架下web項目,web.xml配置文件的作用


1. web.xml中配置了CharacterEncodingFilter,配置這個是攔截所有的資源並設置好編號格式。

  encoding設置成utf-8就相當於request.setCharacterEncoding("UTF-8");  

  foreEncoding設置成true就相當於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,配置這個是攔截所有請求,都交給springmvc轉發

  攔截所有的請求,並加載所有的ssm配置文件(路徑為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>

  


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