loginfilter.java

来自「BUG跟踪系统是用来对开发软件时发现的bug进行跟踪。里面包括用户管理模块」· Java 代码 · 共 43 行

package su.bts1.filter;

import java.io.IOException;

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

public class LoginFilter implements Filter {

	public void destroy() {
	}

	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain filterChain) throws IOException, ServletException {

		HttpServletRequest req = (HttpServletRequest) request;
		HttpServletResponse res = (HttpServletResponse) response;

		if (!(req.getServletPath().equals("/login.do") || req.getServletPath()
				.equals("/login.jsp"))
				&& req.getSession().getAttribute("isLog") == null) {
			res.sendRedirect("login.jsp");
			return;

		} else {
			filterChain.doFilter(request, response);
		}

	}

	public void init(FilterConfig config) throws ServletException {

	}

}