拦截器没有被调用但仍然执行？

Question

我在不同的包中定义了两个拦截器。

一个是"affirmative"（检查session是否包含currentId）另一个"non-affirmative"（检查session是否不包含currentId).

struts.xml:

<!-- actions available to guests -->
<package name="guest" extends="struts-default">
    <interceptors>
        <interceptor name="containskey" class="com.mypackage.interceptor.ContainsKeyInterceptor" />
    </interceptors>

    <action name="index" class="com.mypackage.action.IndexAction">
        <interceptor-ref name="defaultStack" />
        <interceptor-ref name="containskey" />
        <result type="redirect">/index.jsp</result>
        <result name="index" type="redirect">/index.jsp</result>
    </action>

    <action name="login" class="com.mypackage.action.LoginAction">
        <interceptor-ref name="defaultStack" />
        <interceptor-ref name="containskey" />
        <result type="redirect">/index.jsp</result>
        <result name="input">/login.jsp</result>
        <result name="index" type="redirect">/index.jsp</result>
    </action>
</package>

<!-- actions available to members -->
<package name="member" extends="struts-default">
    <interceptors>
        <interceptor name="notcontainskey" class="com.mypackage.interceptor.NotContainsKeyInterceptor" />
    </interceptors>

    <action name="changepassword" class="com.mypackage.action.ChangePasswordAction">
        <interceptor-ref name="defaultStack" />
        <interceptor-ref name="notcontainskey" />
        <result type="redirect">/usercp.jsp</result>
        <result name="input">/usercp-change-password.jsp</result>
        <result name="index" type="redirect">/index.jsp</result>
    </action>

    <action name="logout" class="com.mypackage.action.LogoutAction">
        <result type="redirectAction">
            <param name="actionName">index</param>
        </result>
    </action>
</package>

NotContainsKeyInterceptor:

public class NotContainsKeyInterceptor extends AbstractInterceptor {
    private static final long serialVersionUID = 1L;

    @Override
    public String intercept(ActionInvocation actionInvocation) throws Exception {
        System.out.println("NotContainsKeyInterceptor");

        final ActionContext actionContext = actionInvocation.getInvocationContext();
        Map<String, Object> session = actionContext.getSession();

        if(!session.containsKey("currentId")) {
            return "index";
        }

        String result = actionInvocation.invoke();

        return result;
    }
}

http://localhost:8080/mysite/changepassword

当我在没有登录的情况下调用 changepassword 操作时（即 session不包含currentId），println()的 NotContainsKeyInterceptor 没有执行（这让我假设它没有被调用），但是，它执行预期的行为重定向到 index.jsp.
ChangePasswordActionclass的validate()方法也是被调用。

为什么会这样？

（如果你需要看ChangePasswordAction class，请告诉我，我会把它添加到post。）

Answer 1

实际上它没有被调用..你可以这样改变你的配置并尝试

    <interceptor-ref name="notcontainskey" /> 
    <interceptor-ref name="defaultStack" />

我的意思是先指定拦截器再指定defaultstack

拦截器没有被调用但仍然执行？

Interceptor not being called but executes anyway?

java

jsp

action

struts2

interceptor