spring mvc在Controller中获取ApplicationContext

spring mvc在Controller中获取ApplicationContext

web.xml中进行正常的beans.xml和spring-mvc.xml的配置；

需要在beans.xml中进行需要加载的类的配置；不能在spring-mvc.xml中配置；

beans.xml中的配置：

    <bean id="deployMode" class="java.lang.String">
        <constructor-arg>
            <value>development</value><!-- production -->
        </constructor-arg>
    </bean>

Controller中三种获取方式：

    @RequestMapping(value = "/deploymode")
    @ResponseBody
    public String getDeployMode(HttpServletRequest request) {
        // 1, ContextLoader.getCurrentWebApplicationContext
        // WebApplicationContext context = ContextLoader.getCurrentWebApplicationContext();
        // String deploy = context.getBean("deployMode", String.class);
        // return deploy;
        // 2,servletContext.getAttribute(WebApplicationContext.ROOT_WEB_APPLICATION_CONTEXT_ATTRIBUTE)
        ServletContext servletContext = request.getSession().getServletContext();
        WebApplicationContext context = (WebApplicationContext) servletContext.getAttribute(WebApplicationContext.ROOT_WEB_APPLICATION_CONTEXT_ATTRIBUTE);
        String deploy = context.getBean("deployMode2", String.class);
        return deploy;
        // 3,RequestContextUtils.getWebApplicationContext(request);
        // WebApplicationContext context = RequestContextUtils.getWebApplicationContext(request);
        // String deploy = context.getBean("deployMode", String.class);
        // return deploy;
    }

参考：

http://www.07net01.com/linux/springMVCzaiControllerzhonghuoquWebApplicationContext_656388_1381902854.html

http://zhidao.baidu.com/link?url=ThsMgUqmhDMzlI7MZrB0346vSm1y1e4mNOIzbmSg8AYyAZCwygiSIE0EHHKd3R-rI_lH1M6BEDen68ARPWGXOFkBM9xldUWAFcToaK9edyq