Spring3MVC中怎么获取请求参数

@RequestMapping(value="user/{id}/{name}",method=RequestMethod.GET)    public String printMessage1(@PathVariable String id,@PathVariable String name, ModelMap model) {                System.out.println(id);        System.out.println(name);        model.addAttribute("message", "111111");        return "users";    }

```    a:     b:      ```

    public class Pojo{        private String a;        private int b;    }

@RequestMapping(method = RequestMethod.POST) public String processSubmit(@ModelAttribute("pojo") Pojo pojo) {         return "helloWorld"; }