//1.創建一個UserBean
public class User {

    private String username;
    private String pwd;
    public String getUsername() {
        return username;
    }
    public void setUsername(String username) {
        this.username = user　　name;
    }
    public String getPwd() {
        return pwd;
    }
    
 
public void setPwd(String pwd) {
        this.pwd = pwd;
    }
    @Override
    public String toString() {
        return "User [username=" + username + ", pwd=" + pwd + "]";
    }
}
public class UserAction1 {
    
    /*
     * 屬性驅動-1
     *     創建對應的屬性，名稱和jsp頁面傳遞過來的參數名稱一致
     *     創建對應屬性的get和set方法
     
 
*/
    private String username;
    private String pwd;
    
    public String add(){
        System.out.println("賬號：" + username);
        System.out.println("密碼：" + pwd);
        return "success";
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        
 
this.username = username;
    }

    public String getPwd() {
        return pwd;
    }

    public void setPwd(String pwd) {
        this.pwd = pwd;
    }
    
}
/**
 * 屬性驅動-2
 * 封裝為一個對象，jsp頁面參數需要將name屬性值設置為 【成員變    
 * 量.屬性名稱】的方式傳遞參數
 * @author think
 *
 */
public class UserAction2 {

    private User user;
    
    public String save(){
        System.out.println(user);
        return "success";
    }

    public User getUser() {
        return user;
    }

    public void setUser(User user) {
        this.user = user;
    }
}

/**
 * 模型驅動
 *     1.實現ModelDriven接口，泛型傳入的是接收的數據
 *     2.創建成員變量，必須實例化model對象
 *     3.實現getModel方法，返回model對象
 *     
 * @author think
 *
 */
public class UserAction3 implements ModelDriven<User>{

    private User model = new User();
    
    public String update(){
        System.out.println(model);
        return "success";
    }
    
    @Override
    public User getModel() {
        return model;
    }

}        

屬性驅動 and 模型驅動