Question

struts2配置自定义过滤器，检查用户是否登录，没登录就不许进入某些页面

xml里面

<filter>
<filter-name>struts2</filter-name>
<filter-class>
org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

struts2自动生成的，自定义的过滤器应该怎么写

Answer 1

struts2写拦截器吧?过滤器貌似servlet里边用.
public class LoginInterceptor extends AbstractInterceptor{

private static final long serialVersionUID = 1L;

@Override
public String intercept(ActionInvocation invocation) throws Exception {
Map<String, Object> session=ActionContext.getContext().getSession();
User user=(User) session.get("user");
//如果确认订单时没有登录返回登录页否则继续执行
if (user==null) {
return "relogin";
}else{
invocation.invoke();
return "";
}
}

}