loginchk.jsp

完成图书管理系统的一些简单的功能

<%@ page contentType="text/html; charset=gb2312" language="java" import="java.sql.*" errorPage="" %>
<%@ page import="util.*" %>
<%  
	String uid = request.getParameter("uid");
	try {
	  ResultSet rs = Database.executeQuery("select * from tb_user where userid='" + uid + "';");
	  if(rs.next()) {
	    String pwd = request.getParameter("pwd");
		if(pwd.equals(rs.getString("password"))) {
		  session.setAttribute("reader",uid);
		  //response.sendRedirect("index.jsp");
		  out.println("<script language='javascript'>window.open('index.jsp','_parent');</script>");
		}
		else {
		  out.println("<script language='javascript'>alert('您输入的密码错误！');window.open('login.jsp','_self');</script>");
		}
	  }
	  else {
	    out.println("<script language='javascript'>alert('您输入的用户名错误！');window.open('login.jsp','_self');</script>");
	  }
	}catch(Exception e) {
	  out.println("<script language='javascript'>alert('您的操作有误！');window.open('login.jsp','_self');</script>");
	}
	//conn.close();
%>