mysql中我建了一张表 如下：
create table t_user
（id int not null auto_inrcement，
username varchar(20) not null，
userpwd varchar（20）not null）；
然后jsp做了一个注册页面：
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'register.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<form action="servlet/RegisterServlet" method="post">
<table>
<tr>
<td>用户名：</td>
<td><input type="text" id="user" name="user" /></td>
</tr>
<tr>
<td>密码：</td>
<td><input type="password" id="pwd" name="pwd" /></td>
</tr>
<tr>
<td>确认密码：</td>
<td><input type="password" id="pwd2" name="pwd2" /></td>
</tr>
<tr>
<td></td>
<td>
<input type="submit" value="注册" />
<input type="reset" value="注销" />
</td>
</tr>
</table>
</form>
</body>
</html>
在调试时出现Column count doesn't match value count at row 1（列数不匹配的值为1的行计数）