Struts2自定义拦截器

LoginInterceptor.java

package com.tq365.util;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.interceptor.AbstractInterceptor;
import com.tq365.vo.User;

/**
 * 自定义的拦截器（放行登录操作和已经登录用户的操作）
 * @author archie2010
 *
 */
public class LoginInterceptor extends AbstractInterceptor{

    private static final long serialVersionUID = 1406123004582563032L;

    @Override
    public String intercept(ActionInvocation invocation) throws Exception {
        HttpServletRequest request = ServletActionContext.getRequest();
        HttpSession session = ServletActionContext.getRequest().getSession();
        User user = (User)session.getAttribute("USER");
        // 请求的url
        String path = request.getServletPath();
        boolean flag = false;
        if("/loginuser.jspx".equals(path)){
            flag = true;
        }else{
            if(user!=null){
                flag = true;
            }
        }
        System.out.println(path);
        return flag ? invocation.invoke() : "error";
    }

}

struts.xml

       <interceptors>
            <!-- login拦截器 -->
            <interceptor name="login" class="com.tq365.util.LongInterceptor"/>
             
            <interceptor-stack name="myInterceptor">
            
                <interceptor-ref name="login"/>
                
                <interceptor-ref name="paramsPrepareParamsStack"/>
            </interceptor-stack>
        </interceptors>
        <default-interceptor-ref name="myInterceptor"/>