SpringMVC存取3大域对象

最新推荐文章于 2023-02-08 17:52:22 发布

阿里安

最新推荐文章于 2023-02-08 17:52:22 发布

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分类专栏：笔记本

本文链接：https://blog.csdn.net/Working_Harder/article/details/46368643

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SpringMVC存取Session的两种方法

-- - 部分来源网络

方法一：使用servlet-api

@Controller
public class ManagerController {

@Resource
private ManagerService managerServiceImpl;

@RequestMapping(value = "manager/login.do",method = RequestMethod.GET)
public ModelAndView login(ManagerModel managerModel,HttpSession httpSession){

ManagerModel manager = managerServiceImpl.getManager(managerModel);
if(manager!=null){
manager.setPassword("");
httpSession.setAttribute("manager", manager);
return new ModelAndView(new RedirectView("../admin/main.jsp"));
}else{
return new ModelAndView(new RedirectView("../admin/login.jsp"));
}
}

@RequestMapping(value = "manager/logout.do",method = RequestMethod.GET)
public String logout(HttpSession httpSession){
httpSession.getAttribute("manager");
return "success";
}
}

方法二：使用SessionAttributes

@Controller
@SessionAttributes("manager")
public class ManagerController {

@Resource
private ManagerService managerServiceImpl;

@RequestMapping(value = "manager/login.do",method = RequestMethod.GET)
public ModelAndView login(ManagerModel managerModel,ModelMap model){

ManagerModel manager = managerServiceImpl.getManager(managerModel);
if(manager!=null){
manager.setPassword("");
model.addAttribute("manager", manager);
return new ModelAndView(new RedirectView("../admin/main.jsp"));
}else{
return new ModelAndView(new RedirectView("../admin/login.jsp"));
}
}

@RequestMapping(value = "manager/logout.do",method = RequestMethod.GET)
public String logout(@ModelAttribute("manager")ManagerModel managerModel){
return "success";
}
}

获取 ServletContext 对象 ;
WebApplicationContext webApplicationContext = ContextLoader.getCurrentWebApplicationContext();

ServletContext servletContext = webApplicationContext.getServletContext();

获取(父Spring容器 )ApplicationContext对象
spring 中获取applicationContext其实也很简单只要类实现ApplicationContextAware 接口即可，这样你就可获取上下文中所有bean，很好使的。