Struts2实现登陆拦截器MethodFilterInterceptor

1，创建一个继承自com.opensymphony.xwork2.interceptor.MethodFilterInterceptor的拦截器类 ：CheckLoginInterceptor.java如下：
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.struts2.ServletActionContext;
import org.bgi.commons.util.CommonParamsGetter;
import org.bgi.pg.domain.Customer;

import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.interceptor.MethodFilterInterceptor;
/**
* 拦截未登录的访问
*
*/
public class CheckLoginInterceptor extends MethodFilterInterceptor{

private static final long serialVersionUID = 5933090591407046439L;

@Override
public String doIntercept(ActionInvocation invocation) throws Exception {
HttpSession session = ServletActionContext.getRequest().getSession();
Customer customer = (Customer) session.getAttribute(CommonParamsGetter.SESSION_USER_INFO);
Boolean loginFlag = true;
if(customer == null){
HttpServletRequest request = ServletActionContext.getRequest();
String path = request.getContextPath();
String basePath = request.getScheme() + “://” + request.getServerName() + “:” + request.getServerPort() + path + “/”;
HttpServletResponse response = ServletActionContext.getResponse();
//            response.addHeader(“_timeout”,”true”);
loginFlag = false;
}
session.setAttribute(CommonParamsGetter.SESSION_LOGIN_INFO, loginFlag);
return invocation.invoke();
}

}

2，在 spring配置文件中配置该实体。

<bean id=”checkLoginIntercepter”  class=”org.*.*.CheckLoginInterceptor”/>

3，在struts.xml中配置该拦截器

<interceptors>
<interceptor name=”checkLogin”  class=”checkLoginIntercepter”>
</interceptor>

<interceptor-stack name=”bgiDefaultStack” >
<interceptor-ref name=”checkLogin” />
<interceptor-ref name=”defaultStack” />
</interceptor-stack>
</interceptors>

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