数据的处理

@RequestMapping("/hello")
    public String hello(String name){
        System.out.println(name);
        return "index.jsp";
        //这种方式不需要视图解析器    
    }

@RequestMapping("/hello")
    public String hello(@RequestParam("uname")String name){
        System.out.println(name);
        return "index.jsp";
        //这种方式不需要视图解析器    
    }

@RequestMapping("/user")
    public String user(User user){
        System.out.println(user);
        return "index.jsp";
    }

package com.sgcc.entity;

public class User {
    private int id;
    private String name;
    private String pwd;
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getPwd() {
        return pwd;
    }
    public void setPwd(String pwd) {
        this.pwd = pwd;
    }
    @Override
    public String toString() {
        return "User [id=" + id + ", name=" + name + ", pwd=" + pwd + "]";
    }
    
    
    

}

@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";
        //这种方式不需要视图解析器    
    }