定义一个filter, 实现ApplicationContextAware接口:
, ApplicationContext ctx; (FilterConfig config) throws ServletException {}(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {filterChain.doFilter(servletRequest, servletResponse);}() {}(ApplicationContext applicationContext) throws BeansException {CacheFilter.ctx = applicationContext; // 保存spring容器到static变量中}
然后,在spring配置文件中配置该filter,使之成为容器管理的bean:
<beans:bean id=”cacheFilter” class=”com.fh.taolijie.servlet.CacheFilter” />
最后,在web.xml中声明过滤器:
<filter><filter-name>Cache Filter</filter-name><filter-class>com.fh.taolijie.servlet.CacheFilter</filter-class></filter><filter-mapping><filter-name>Cache Filter</filter-name><servlet-name>appServlet</servlet-name></filter-mapping>
这时,,我们就可以在doFilter()方法中直接通过ApplicationContext检索需要的bean了:
StringRedisTemplate redis = (StringRedisTemplate)ctx.getBean(“redisTemplate”);
希望你灰暗的心情在此刻明亮起来,去迎接美好的明天!