Struts2中表单与Action传递数据三种方式
转自：http://gty.vip.blog.163.com/blog/static/1192114782009759355784/

1. Action中的属性与表单中的属性一致就可以

JSP中的表单

<formaction="login.action"method="post">

用户名:<inputtype="text"name="username"/> <br/>

密码: <inputtype="password"name="password"/><br/>

<inputtype="submit"value="登陆"/>

</form>



Action中的属性

publicclassLoginActionextends ActionSupport {

private String username;

private String password;



public String getUsername() {

returnusername;

}

publicvoid setUsername(String username) {

this.username = username;

}

public String getPassword() {

returnpassword;

}

publicvoid setPassword(String password) {

this.password = password;

}



public String execute(){

if( username.equalsIgnoreCase("aaa")&&password.equals("aaaaaa")){

returnSUCCESS;

}

else{

returnERROR;

}

}

}

2. 使用一个VO类

在表单中提交的属性名改为user.username

<formaction="login.action"method="post">

用户名:<inputtype="text"name="user.username"/> <br/>

密码: <inputtype="password"name="user.password"/><br/>

<inputtype="submit"value="登陆"/>

</form>

LoginAction中的属性改为user

publicclassLoginActionextends ActionSupport{

private User user;



public User getUser() {

returnuser;

}

publicvoid setUser(User user) {

this.user = user;

}



public String execute(){

if( user.getUsername().equalsIgnoreCase("aaa")&&user.getPassword().equals("aaaaaa")){

returnSUCCESS;

}

else{

returnERROR;

}

}

}





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

publicclassLoginActionextends ActionSupport implements ModelDriven<User> {

private User user = new User();



public String execute(){

if( user.getUsername().equalsIgnoreCase("aaa")&&user.getPassword().equals("aaaaaa")){

returnSUCCESS;

}

else{

returnERROR;

}

}



public User getModel() {

returnuser;

}

}