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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