GradebookAction.java 文件源码

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