struts2 输入校验如果是对象？应该怎么处理

LoginAction



public class LoginAction extends ActionSupport {


private UserService userService;
private User user;

public User getUser() {
    return user;
}

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




...

login.jsp


<body style="text-align: center;">

        <s:form action="Login!login" validate="true">

            <s:textfield name="user.admin_name" label="name" />

            <s:password name="user.admin_key" label="pwd" />

            <s:submit value="login" />

        </s:form>

</body>

LoginAction-validation.xml


<validators>

    <field name="user.admin_name">

        <field-validator type="requiredstring">

            <message> This string is required </message>

        </field-validator>

    </field>

    <field name="user.admin_key">

        <field-validator type="requiredstring">

            <message> This string is required </message>

        </field-validator>

    </field>

</validators>



这样会报错，不知道怎么验证User这个对象











This string is required









This string is required





就是这样 刚才在这里敲 没注意放置位置

[code="java"]
你得问题是不是 name="user.admin_name" 这样带对象名的 字段无法验证？
[/code]

使用 visitor校验器










This string is required









This string is required








这个放到 节点里