spring boot 从零开始入门2: REST服务

GET 方式

    @RequestMapping("hello") 
    public String sayHello() {
        return "Hello World!";
    }

查询参数

    @RequestMapping("html") 
    public void sayHello(@RequestParam(value = "name") String name)  {

    }

    @RequestMapping("html") 
    public void sayHello2(@RequestParam(value = "name",required=true,defaultValue="a") String name)  {

    }

POST方式

    @RequestMapping(value = "/hellopost", method = RequestMethod.POST)
    public void postHello(@RequestBody String postdata) 

    }

servlet(request / response)

   @RequestMapping("html")         //url
    public void sayHello(HttpServletRequest request,
                         HttpServletResponse response)  {
        //response.setContentType("text/html");
        //response.setContentType("text/xml");
        response.setContentType("text/json");
        response.setCharacterEncoding("UTF-8");

        OutputStream os = response.getOutputStream();
        os.write("helloworld".getBytes());
    }

   @RequestMapping("html")         //url
    public void sayHello(HttpServletRequest request,HttpServletResponse response,HttpSession session)  {

    }

   @RequestMapping(value = "/html", method = RequestMethod.POST) 
    public void postHello(HttpServletRequest request,HttpServletResponse response,@RequestBody String postData)  {

    }