数据库实现修改数据功能是出现列名'studentWeight'无效错误，该如何修改？
<%@page import="java.sql.*"%>
<%@ 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 'updateStudentCheck.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>
<% String id=new String(request.getParameter("id"));
byte b[]=id.getBytes("ISO-8859-1");
id=new String(b,"UTF-8");
String studentName1=request.getParameter("studentName");
byte b1[]=studentName1.getBytes("ISO-8859-1");
studentName1=new String(b1,"UTF-8");
String studentSex1=request.getParameter("studentSex");
byte b2[]=studentSex1.getBytes("ISO-8859-1");
studentSex1=new String(b2,"UTF-8");
String studentAge1=request.getParameter("studentAge");
byte b3[]=studentAge1.getBytes("ISO-8859-1");
studentAge1=new String(b3,"UTF-8");
String studentWeight1=request.getParameter("studentWeight");
byte b4[]=studentWeight1.getBytes("ISO-8859-1");
studentWeight1=new String(b4,"UTF-8");
Connection conn=null;
Statement stmt=null;
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
String url="jdbc:sqlserver://localhost:1433;databasename=student";
String user="stu";
String password="stu";
conn= DriverManager.getConnection(url,user,password);
stmt=conn.createStatement();
String sql="update student set studentName='"+studentName1+"',studentSex='"+studentSex1+
"',studentAge="+studentAge1+",studentWeight="+studentWeight1+" where studentNumber='"+id+"'";
stmt.executeUpdate(sql);
conn.close();
stmt.close();
%>
<h3>修改完成！</h3>
</body>
</html>
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评论（3）
谢谢，看到了！
确实是无效啊，两个列名都不一致，sql 写的 studentWeight,数据库的是stuedntWeight
可以把你的执行SQL语句打印出来看看