chklogin.jsp

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JSP
42
字号
<%@ page contentType="text/html; charset=gb2312" language="java" errorPage="" %>
<%@ include file="incdb.jsp"%>
<jsp:useBean id="conn" class="twm.bbsreg" scope="page"/>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>登录</title>
</head>

<body>
<%
  String sql="";
  ResultSet rs;
  String username=request.getParameter("username");
  String password=request.getParameter("password");
  if(username!=null&&!username.equals("")){
  try{
     sql="select * from user where username='" + username + "' and userpassword='" + password + "'"; 
  rs=conn.executeQuery(sql);
  if(rs.next()){
  session.setAttribute("login","ok");
  session.setAttribute("username",username);
  %>
           <jsp:forward page="index1.jsp"/>
  
 <%
      }else
	  out.println("错误的用户名或密码");//验证未通过,显示错误信息。
	  out.println("<a href=login.jsp>返回</a>");
	  }catch(Exception ee){
	  ee.printStackTrace();
	  }
  
  }else{
  out.println("请先登录!");
  out.println("<a href=login.jsp>返回</a>");
}
%>


</body>
</html>

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