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  • Java web 4-6 update_stu_1.jps

    <%@ page language="java" import="java.sql.*" pageEncoding="UTF-8"%>
    <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>修改记录页面</title>
    </head>
    <body>
    <%
    request.setCharacterEncoding("UTF-8");
    String driverName= "com.mysql.jdbc.Driver";
    String userName="root";
    String userPwd="147258369";
    String dbName="students";
    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="update students_info set weight=? where name=?";
    PreparedStatement pstmt=conn.prepareStatement(sql);
    pstmt.setFloat(1,131);
    pstmt.setString(2,"张三");
    int n=pstmt.executeUpdate();
    if(n==1){%> 数据插入操作成功!<br> <%}
    else{%> 数据插入操作失败! <br> <%}
    if(pstmt!=null){pstmt.close();}
    if(conn!=null){conn.close();}%>
    </body>
    </html>

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  • 原文地址:https://www.cnblogs.com/meng2/p/7756815.html
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