spring-xml configuration

Explanation

• The spring default configuration file needs to be configured in WEB-INF, if not configured, the container will fail to load

Configure WEB.XML

• Configure listener, why do you need a listener?

  • Because let the listener listen to when the ServiceContextListener starts, and load the spring container when starting, to ensure that there is only one spring container in the WEB project

    <listener>s
        <listener-class >
           org.springframework.web.context.ContextLoaderListener
        </listener-class>
    </listener>
  

• Load spring configuration file

  • The configuration file named applicationContext.xml in the WEB-INF directory is loaded by default
  • If you change the directory where the configuration file is located, you need to configure it to take effect. The default directory: WEB-INF
  • If you change the name of the configuration file, you need to configure it to take effect, the default name: applicationContext.xml

  <context-param>
      <param-name>contextConfigLocation</param-name>
      <!-- 加载src下的配置文件. 可以使用通配符的方式 -->
      <param-value>classpath : *. xml</param-value>
      <!-- 加载scr下所有以bean开头的配置文件 -->
      <param-value>classpath : bean-*. xml</param-value>
      <!-- 这是加载其他路径的配置文件 -->
      <param-value>classpath:config/spring/bean.xml</param-value>
  </context-param>
  

• Configure encoding filters

  • Loaded at startup, each request will be filtered

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