globainterceptor.java

用Struts做的聊天系统

package com.chat.intercepter;

import java.util.Map;

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

public class GlobaInterceptor extends AbstractInterceptor {

	@Override
	public String intercept(ActionInvocation invocation) throws Exception {
		Map map=invocation.getInvocationContext().getSession();
		System.out.println("interceptor denglu---------");
		String username=(String)map.get("username");
		if(username!=null){
			String result=invocation.invoke();
			return result;
		}
		map.put("success", "你还没有登陆，请输入用户名和密码！");
		return "back";
	}

}