代码：

提交代码：

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<html>
<body>
<form action="insert_stu_2.jsp" method="post">
<table border="0" width="238" height="252">
<tr><td>学号</td><td><input type="text" name="id"></td></tr>
<tr><td>姓名</td><td><input type="text" name="name"></td></tr>
<tr><td>性别</td><td><input type="text" name="sex"></td></tr>
<tr><td>年龄</td><td><input type="text" name="age"></td></tr>
<tr><td>体重</td><td><input type="text" name="weight"></td></tr>
<tr><td>身高</td><td><input type="text" name="hight"></td></tr>
<tr align="center">
<td colspan="2">
<input type="submit" value="提 交">&nbsp;&nbsp;&nbsp;
<input type="reset" value="取 消">
</td>
</tr>
</table>
</form>
</body>
</html>

添加代码：

<%@ page language="java" import="java.sql.*" pageEncoding="utf-8"%>

<html>
<body>
<%String driverName="com.mysql.jdbc.Driver";
String userName="root";
String userPwd="123456";
String dbName="student";
String url1="jdbc:mysql://localhost:3306/"+dbName;
String url2="?user="+userName+"&password="+userPwd;
String url3="&useUnicode=true&characterEncoding=UTF-8";
String url=url1+url2+url3;
Class.forName(driverName);
Connection conn=DriverManager.getConnection(url);
String sql="insert into stu_info(id,name,sex,age,weight,hight)values(?,?,?,?,?,?)";
PreparedStatement pstmt=conn.prepareStatement(sql);
request.setCharacterEncoding("utf-8");
int id=Integer.parseInt(request.getParameter("id"));
String name=request.getParameter("name");
String sex=request.getParameter("sex");
int age=Integer.parseInt(request.getParameter("age"));
float weight=Float.parseFloat(request.getParameter("weight"));
float hight=Float.parseFloat(request.getParameter("hight"));
pstmt.setInt(1, id);
pstmt.setString(2, name);
pstmt.setString(3, sex);
pstmt.setInt(4, age);
pstmt.setFloat(5, weight);
pstmt.setFloat(6, hight);
int n=pstmt.executeUpdate();
if(n==1){%>数据插入操作成功！<%}
else{%>数据插入操作失败！<%}
if(pstmt!=null){pstmt.close();}
if(conn!=null){conn.close();}
%>
</body>
</html>