登陆问题

Question

<%@ page contentType="text/html; charset=gb2312" %>
<%@ page import="java.sql.*" %>
<%@ page import="java.util.*" %><%
String Username=request.getParameter("name");
String Userpasswd=request.getParameter("passwd");
//System.out.println(Username);
//System.out.println(Userpasswd);
%>　<%
   Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver").newInstance();
   String url="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=sde";    String user="sa"; 
String password="sa";
Connection conn= DriverManager.getConnection(url,user,password);
Statement stmt=conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);  String sql="select * from login where Username like '"+Username+"'"; ResultSet rs=stmt.executeQuery(sql);    String name="";    String Password =""; String service ="";    while(rs.next()){     name=rs.getString(1);       Password=rs.getString(2);       service=rs.getString(3);     System.out.println(!conn.isClosed());     System.out.println(Password); } if (Username=="" ||Userpasswd==""){%> <script language="javaScript"> alert("您输入的用户名或者密码为空，请重新输入！"); window.history.back(); </script>
     <%}

else if(name==""){%> <script language="javaScript"> alert("您输入的用户名不存在，请重新输入！"); window.history.back();
</script>
     <%}
else if(!Userpasswd.equals(Password)){%> <script language="javaScript"> alert("您输入的密码不正确，请重新输入！"); window.history.back();
</script>

<%}%>


密码正确怎么也提示密码不正确?进了系统

Answer 1

我输入正确密码,怎么还是提示密码不正确