SpringMVC-02

添加@EnableWebMvc //配置json转化器（使用postman）
可以不用写下面两个方法了
@Bean
public RequestMappingHandlerMapping handlerMapping(){
return new RequestMappingHandlerMapping();
}
@Bean
public RequestMappingHandlerAdapter handlerAdapter(){
return new RequestMappingHandlerAdapter();
}

接收数据

接收cookie

    @RequestMapping("/data")public String cookie(@CookieValue(value="cookieName") String value){return value;}@GetMapping("/save")public String save(HttpServletResponse response){Cookie cookie=new Cookie("cookieName","root");response.addCookie(cookie);return "OK";}

获取请求头

    @RequestMapping("data")public String data(@RequestHeader("Host") String host){return "host:"+host;}

原生对象获取

    public String data(HttpServlet httpServlet, HttpServletRequest httpServletRequest,HttpSession httpSession){return "HttpServlet"+httpServlet+" HttpServletRequest"+httpServletRequest+" HttpSession"+httpSession;}

共享域对象

//1.原生api方式	@Autowiredprivate ServletContext servletContext;public void data(HttpServletRequest httpServletRequest, HttpSession httpSession){}//2.//spring提供的方法:request提供了几种   model   moaelMap    map    modelAndView