web.xml

web项目启动时,

容器(Tomcat)加载web.xml

加载顺序

<context-param>

由于ContextLoaderListener加载时,会查找名为contextConfigLocation的参数.

因此,配置context-param时参数名字应该是contextConfigLocation.

所以context-param参数的名字是固定的contextConfigLocation.

1 <context-param>
2     <param-name>contextConfigLocation</param-name>
3     <param-value>classpath:spring-config.xml</param-value>
4 </context-param>

1 <listener>
2         <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
3 </listener>

 1     <!-- Spring字符集过滤器 -->
 2     <filter>
 3         <filter-name>characterEncoding</filter-name>
 4         <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
 5         <!-- 设置request所指定字符集 -->
 6         <init-param>
 7             <param-name>encoding</param-name>
 8             <param-value>UTF-8</param-value>
 9         </init-param>
10         <!-- 设置response所指定字符集 -->
11         <init-param>
12             <param-name>forceEncoding</param-name>
13             <param-value>true</param-value>
14         </init-param>
15     </filter>
16     <!-- filter过滤规则 -->
17     <filter-mapping>
18         <filter-name>characterEncoding</filter-name>
19         <url-pattern>/*</url-pattern>
20     </filter-mapping>

 1     <servlet>
 2         <servlet-name>dispactherServlet</servlet-name>
 3         <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
 4         <init-param>
 5             <param-name>contextConfigLocation</param-name>
 6             <param-value>/WEB-INF/spring-mvc.xml</param-value>
 7         </init-param>
 8 
 9         <load-on-startup>1</load-on-startup>
10     </servlet>
11 
12     <servlet-mapping>
13         <servlet-name>dispatcherServlet</servlet-name>
14         <url-pattern>/</url-pattern>
15     </servlet-mapping>