在web.xml中配置Spring,配置如下     <servlet>     <servlet-name>springServlet</servlet-name>     <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>     <init-param>     <param-name>contextConfigLocation</param-name>     <param-value>/WEB-INF/applicationContext.xml</param-value>     </init-param>     <load-on-startup>1</load-on-startup>     </servlet>     在Servlet中通过WebApplicationContextUtils.getWebApplicationContext(getServletContext())获取WebApplicationContext对象为null.这是由于除了配置DispatcherServlet,还需要配置ContextLoaderServlet,否则无法获取WebApplicationContext.配置方法如下,在web.xml中加入     <servlet>     <servlet-name>context</servlet-name>     <servlet-class>org.springframework.web.context.ContextLoaderServlet</servlet-class>     <load-on-startup>2</load-on-startup>     </servlet>

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