Go语言视频零基础入门到精通

javalearner

1，创建自定义验证拦截器类：AuthenticationInterceptor.java
package ch06.struts2.Interceptor;
import java.util.Map;
import com.opensymphony.xwork2.Action;
import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.interceptor.Interceptor;
public class AuthenticationInterceptor implements Interceptor {
private static final long serialVersionUID = 1L;
public static final String USER_SESSION_KEY = "UserSessionKey";
public void destroy() {
}
public void init() {
}
public String intercept(ActionInvocation actionInvocation) throws Exception {
  //取得Session
  Map session = actionInvocation.getInvocationContext().getSession();
  //从Session里或得登陆保存进session的User类
  String user = (String)session.get(USER_SESSION_KEY);
  //判断用户名是否为空
  boolean isAuthenticated = (null != user);
  if(!isAuthenticated){//如果为通过验证
   return Action.LOGIN;//返回登陆页面
  }
  return actionInvocation.invoke(); //返回验证通过
}
}
2，在struts.xml配置自定义拦截器
         <!-- 配置自定义拦截器 -->
         <interceptors>
            <interceptor name="Authentication" class="ch06.struts2.Interceptor.AuthenticationInterceptor"></interceptor>
         </interceptors>

         <!-- 添加受验证拦截器保护的Action -->
         <action name="Welcome">
            <interceptor-ref name="Authentication"></interceptor-ref>
            <result name="success">welcome.jsp</result>
         </action>

mom345

不错，谢谢。啊