checkfilter.java

来自「网上结婚登记系统 Java语言编写 可直接运行」· Java 代码 · 共 55 行

package task.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;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
/**
 * @author wanglei
 *
 * Nov 3, 2008
 */
public class CheckFilter implements Filter {

	public CheckFilter() {
		// TODO Auto-generated constructor stub
	}

	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;
		
		request.setCharacterEncoding("gbk");
		HttpSession session = request.getSession();
		
		String requestPath = request.getRequestURI();
		if(requestPath.equals("/wedding_reserve/welcome.jsp") || requestPath.equals("/wedding_reserve/task.action/LoginAction")||requestPath.endsWith(".gif")||requestPath.endsWith(".css")){
			arg2.doFilter(request, response);
			return;
		}
		String flag = (String) session.getAttribute("flag");
					
		response.sendRedirect("/wedding_reserve/welcome.jsp");
	}

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

	}

}