数据处理

//处理方法：
    @RequestMapping("/hello")
    public String hello(String name){
        System.out.println(name);
        return "index.jsp";
    }

//处理方法：
@RequestMapping("/hello")
    /*
     * @RequestParam("uname")uname是提交的域的名称
     * */
    public String hello(@RequestParam("uname")String name){
        System.out.println(name);
        return "index.jsp";
    }

//处理方法：
    @RequestMapping("/person")
    public String person(Person p){
        System.out.println(p);
        return "index.jsp";
    }
//实体类：
public class Person {
    private int ind;
    private String name;
    private String pwd;
    //省略get/set方法
}

public class HelloController implements Controller {

    @Override
    public ModelAndView handleRequest(HttpServletRequest req, HttpServletResponse resp) throws Exception {
        // TODO Auto-generated method stub    
        ModelAndView mav = new ModelAndView();
        //封装要显示到视图中的数据
        mav.addObject("msg", "hello springmvc");
        //视图名
        mav.setViewName("hello");
        return mav;
    }

}

@RequestMapping("/hello")
public String hello(@RequestParam("uname")String name, ModelMap model){
        //相当于request.setAttribute("name",name);
        model.addAttribute("name", name);
        System.out.println(name);
        return "index.jsp";
    }