Question

struts2拦截器 怎么没用的

<interceptors>
<interceptor name="auth" class="com.service.AuthInterceptor"></interceptor>
</interceptors>
<global-results><result name="login" type="redirect">/login.jsp</result>
</global-results>

package com.service;

import java.util.Map;

import com.opensymphony.xwork2.Action;
import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.interceptor.AbstractInterceptor;

public class AuthInterceptor extends AbstractInterceptor
{
@Override
@SuppressWarnings("unchecked")
public String intercept(ActionInvocation invocation) throws Exception
{
Map map = invocation.getInvocationContext().getSession();//jsp登录页面将用户登录的信息存在一个session中

if(map.get("username") == null) //判断session中有没有用户登录的信息，没有就返回login
{
return Action.LOGIN;
}
else
{
return invocation.invoke(); //若有登录信息就继续执行其他拦截器的代码
}
}
}

和没加一样

Answer 1

<interceptors>
<interceptor name="auth" class="com.service.AuthInterceptor"></interceptor>
<interceptor-stack name="baseStack">
<interceptor-ref name="auth" />
<interceptor-ref name="defaultStack" />
</interceptor-stack>
</interceptors>
<default-interceptor-ref name="baseStack" />
<global-results>
<result name="login" type="redirect">/login.jsp</result>
</global-results>

try