EditLessonIntroAction.java 文件源码

private ILessonService getLessonService() {
if (lessonService == null) {
    WebApplicationContext ctx = WebApplicationContextUtils
        .getRequiredWebApplicationContext(getServlet().getServletContext());
    lessonService = (ILessonService) ctx.getBean("lessonService");
}
return lessonService;
   }