Struts2中表单与Action传递数据三种方式(转)
1.Action中的属性与表单中的属性一致就可以

JSP中的表单<form action="login.action" method="post">    用户名:<input type="text" name="username"/>    <br/>    密码:  <input type="password" name="password" /> <br/>    <input type="submit" value="登陆" /></form> Action中的属性                                                        public class LoginAction extends ActionSupport {    private String username;    private String password;       public String getUsername() {       return username;    }    public void setUsername(String username) {       this.username = username;    }    public String getPassword() {       return password;    }    public void setPassword(String password) {       this.password = password;    }    public String execute(){       if( username.equalsIgnoreCase("aaa")&&password.equals("aaaaaa")){           return SUCCESS;       }       else{           return ERROR;       }    }}

2.使用一个VO类

在表单中提交的属性名改为user.username<form action="login.action" method="post">       用户名:<input type="text" name="user.username"/>  <br/>       密码:  <input type="password" name="user.password" /> <br/>       <input type="submit" value="登陆" />    </form>LoginAction中的属性改为userpublic class LoginAction extends ActionSupport{    private User user;       public User getUser() {       return user;    }    public void setUser(User user) {       this.user = user;    }     public String execute(){       if( user.getUsername().equalsIgnoreCase("aaa")&&user.getPassword().equals("aaaaaa")){           return SUCCESS;       }       else{           return ERROR;       }    }}

3.使用Struts2中的ModelDriven数据模式

Action类要实现一个泛型接口,前台表单与1相同public class LoginAction extends ActionSupport implements ModelDriven<User> {    private User user = new User();       public String execute(){       if( user.getUsername().equalsIgnoreCase("aaa")&&user.getPassword().equals("aaaaaa")){           return SUCCESS;       }       else{           return ERROR;       }    }     public User getModel() {       return user;    }}

参考：
http://gty.vip.blog.163.com/blog/static/1192114782009759355784/