@RequestMapping用法的简单介绍

RequestMapping是一个用来处理请求地址映射的注解，可用于类或方法上。用于类上，表示类中的所有响应请求的方法都是以该地址作为父路径。一下案例是RequestMapping注释常用的两种用法。

 //处在类的上面，类中所有响应请求的方法都已该（${adminPath}/smart/educlassroom）路径为父路劲@RequestMapping(value = "${adminPath}/smart/educlassroom")public class EduclassroomController extends BaseController {       //value 指定普通的具体值路径    @RequestMapping(value = "formnew")    public String formnew(Educlassroom educlassroom, Model model) {        model.addAttribute("educlassroom", educlassroom);        return "modules/smart/educlassroom/educlassroomFormnew";    }       //value指定含有变量的一类值（id是变化的，不是唯一的）的路径，@PathVariable注释是获取路径中id值    @RequestMapping(value = "content/{id}")    public String content(@PathVariable String id, Model model) {        Educlassroom educlassroom = new Educlassroom();        educlassroom.setId(id);        Educlassroom educlassroomview = educlassroomService.findEduclassroomview(educlassroom);        model.addAttribute("educlassroomview", educlassroomview);        return "modules/smart/educlassroom/content";    }}

本案例中，jsp页面通过window.open（）方法通过映射先找到类上的父类径${adminPath}/smart/educlassroom/，然后再找到具体方法content(@PathVariable String id, Model model)上的content/{id}路径，看下面的代码，educlassId是变换的。同时content方法通过@PathVariable注释，获取路径中的动态值id;

window.open ("${adminPath}/smart/educlassroom/content/"+educlassId);