adminfilter.java

来自「Java项目 新闻管理系统 jsp+struts+hibernate 开发」· Java 代码 · 共 32 行

package com.xdf.news.web.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;

public class AdminFilter implements Filter {
	public void destroy() {
	}

	public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws IOException, ServletException {
				
		HttpServletRequest request = (HttpServletRequest)req;
		if(request.getSession().getAttribute("admin")==null) {
			request.setAttribute("message","请先登陆!");
			request.getRequestDispatcher("/guest/login.jsp").forward(req,resp);
		}else {
			chain.doFilter(req,resp);
		}
		
	}

	public void init(FilterConfig config) throws ServletException {
	}
}