loginfilter.java

cookies登陆验证 刚做好的 里显示了 怎么实现自动登陆和 cookie里面取值放值等信息

package filter;

import java.io.IOException;
import java.io.PrintWriter;

import javax.mail.Session;
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.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

public class LoginFilter implements Filter {

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

	}

	public void doFilter(ServletRequest arg0, ServletResponse arg1,
			FilterChain arg2) throws IOException, ServletException {
		// TODO Auto-generated method stub
		HttpServletRequest request = (HttpServletRequest)arg0;
		HttpServletResponse response = (HttpServletResponse)arg1;
		HttpSession session = request.getSession();	
		
		String[] info = null;
		String uri = request.getRequestURI();
		
		if(uri.endsWith(".jsp") || uri.indexOf("/servlet")!= -1) {
			if(uri.endsWith("Login.jsp") || uri.endsWith("servlet/LoginServlet")) {
				arg2.doFilter(arg0, arg1);
			}else {
				if(request.getSession(true).getAttribute("username") == null) {
					Cookie[] cookies = request.getCookies();
					if(cookies != null) {
						for(int i=0; i<cookies.length; i++) {
						if(cookies[i].getName().equals("Test_dl")) {
							info = cookies[i].getValue().split("#");
							session.setAttribute(cookies[i].getName(), cookies[i].getValue());
						}else{
							arg2.doFilter(arg0, arg1);
							return;
						}
					  }
					}
				}
	//
			}
		}else {
//			System.out.println("----no jsp and servlet------");
			arg2.doFilter(arg0, arg1);
			return ;
		}
  }

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

	}

}