Struts2中表单与Action传递数据三种方式

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;
}
}