jsp没有登陆，怎么才能不让用户进入其它页面 写一个过滤器-LoginFilterimport javax.servlet.*；import javax.servlet.http.*；import java.io.*；import java.util.*；import electroniccommerceweb.entity.Member；import electroniccommerceweb.entity.Cart；public class LoginFilter extends HttpServlet implements Filter {private FilterConfig filterConfig；Handle the passed-in FilterConfigpublic void init(FilterConfig filterConfig)throws ServletException {this.filterConfig=filterConfig；}Process the request/response pairpublic void doFilter(ServletRequest request，ServletResponse response，FilterChain filterChain){try {HttpServletRequest req=(HttpServletRequest)request；HttpServletResponse res=(HttpServletResponse)response；HttpSession session=req.getSession()；LoginInfo login=(LoginInfo)session.getAttribute(\"login\")；此session是你在登录是放入的用户实体if(login=null){res.sendRedirect(\"login.jsp\")；}else{filterChain.doFilter(request，response)；}} catch(ServletException sx){filterConfig.getServletContext().log(sx.getMessage())；} catch。
JSP显示 页面一点登陆就报错，实在是找不到原因啊 404错误，没有找到/aa/loginServlet 这个servlet检查你的xml配置文件是否正确。检查你的路径是否有这个servlet把路径写全试试。jsp页面可以在前面加上绝对路径${pageContext.request.contextPath}/aa/loginServlet 这样试试
jsp没有登陆，怎么才能不让用户进入其它页面拜托各位了 3Q 写一个过滤器-LoginFilter import javax.servlet.*；import javax.servlet.http.*；import java.io.*；import java.util.*；import electroniccommerceweb.entity.Member；import electroniccommerceweb.entity.Cart；public class LoginFilter extends HttpServlet implements Filter { private FilterConfig filterConfig；Handle the passed-in FilterConfig public void init(FilterConfig filterConfig)throws ServletException { this.filterConfig=filterConfig；}/Process the request/response pair public void doFilter(ServletRequest request，ServletResponse response，FilterChain filterChain){ try { HttpServletRequest req=(HttpServletRequest)request；HttpServletResponse res=(HttpServletResponse)response；HttpSession session=req.getSession()；LoginInfo login=(LoginInfo)session.getAttribute(\"login\")；此session是你e69da5e6ba90e799bee5baa6e997aee7ad9431333335313862在登录是放入的用户实体 if(login=null){ res.sendRedirect(\"login.jsp\")；} else { filterChain.doFilter(request，response)；} } catch(ServletException sx){ filterConfig。.
