ajax

 

可以這樣：先定義data
var user{ "username" : $("txtUsername").val(), "password" : $("txtPassword").val() };
$.ajax({
url:"login.action",
data:user, //返回的數據
dataType :"json",
...
});

返回的是json，在配置文件裏
<package name="json-alidate" extends="json-default" namespace="/user">
     <action name="login" class="......LoginAction">
    <result name="success" type="json">
             <param name="root">ok</param>
    </result>
    </action>
</package>

驗證的action裏可以寫
private  String username;
private String password;
private boolean ok;
...getter  and setter...
publict String excute() {
  User user = new User();

  user.setUsername(username);
  ...判斷
  user.setPassword(password);
...判斷
(用戶名密碼正確ok=true，否則false)
return "success";