@RequestMapping("/testServletAPI")
public String testServletAPI(HttpServletRequest request){
request.setAttribute("testScope", "hello,servletAPI");
return "success";
}
获取:
<p th:text="${testRequestScope}">p>
//注意这里返回值必须为ModelAndView类型
//ModelAndView两个作用:向request域共享数据,第二设置视图名称
@RequestMapping("/testModelAndView")
public ModelAndView testModelAndView(){
/*
* ModelAndView有Model和View的功能
* Model主要用于向请求域共享数据
* View主要用于设置视图,实现页面跳转
*/
ModelAndView mav = new ModelAndView();
//处理模型数据
mav.addObject("testRequestScope","Hello,ModelAndView");
//设置视图名称,实现页面跳转
mav.setViewName("success");
return mav;
}
@RequestMapping("/testModel")
public String testModel(Model model){
model.addAttribute("testRequestScope","Hello Model");
return "success";
}
@RequestMapping("/testMap")
public String testMap(Map<String ,Object> map){
map.put("testRequestScope","Hello map");
return "success";
}
@RequestMapping("/testModelMap")
public String testModelMap(ModelMap modelMap){
modelMap.addAttribute("testRequestScope","Hello ModelMap");
return "success";
}
}
Model、ModelMap、Map类型的参数其实本质上都是 BindingAwareModelMap 类型的
public interface Model{}
public class ModelMap extends LinkedHashMap {}
public class ExtendedModelMap extends ModelMap implements Model {}
public class BindingAwareModelMap extends ExtendedModelMap {}
这里推荐使用的是ServletAPI的方法而不推荐SpringMVC提供的方法
@RequestMapping("/testSession")
public String testSession(HttpSession session){
session.setAttribute("testSessionScope", "hello,session");
return "success";
}
注意在thymeleaf中,session域访问的方法为session.键名
<p th:text="${session.testSessionScope}">p>