filter.java

来自「struts框架的过滤器只是简单的一个功能的实现,可以完善一下就可以用了」· Java 代码 · 共 42 行

package filter;

import java.io.IOException;

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;
import javax.servlet.http.HttpServletResponse;

public class Filter implements javax.servlet.Filter {

	public void destroy() {
		// TODO Auto-generated method stub

	}

	public void doFilter(ServletRequest srqu, ServletResponse srps,
			FilterChain fc) throws IOException, ServletException {
		
		HttpServletRequest request=(HttpServletRequest)srqu;
		HttpServletResponse response=(HttpServletResponse)srps;
		String falg=(String)request.getSession().getAttribute("flag");
		if(falg==null)
		{
			response.sendRedirect("../login.jsp");
		}
		
		fc.doFilter(request, response);
		

	}

	public void init(FilterConfig arg0) throws ServletException {
		// TODO Auto-generated method stub

	}

}