JSP 连接MySQL配置与使用

前提：配置好resin和mysql

1)建立数据库sunjian，建立表kecheng

2)建立测试页面TestLinkDateBase.jsp，尝试用jsp连接mysql

<%@ page contentType="text/html; charset=gb2312" %>
<%@ page language="java" %>
<%@ page import="com.mysql.jdbc.Driver" %>
<%@ page import="java.sql.*" %>
<%
//驱动程序名
String driverName="com.mysql.jdbc.Driver";
//数据库用户名
String userName="root";
//密码
String userPasswd="";
//数据库名
String dbName="sunjian";
//表名
String tableName="kecheng";
//联结字符串
String url="jdbc:mysql://localhost/"+dbName+"?user="+userName+"&password="+userPasswd;
Class.forName("com.mysql.jdbc.Driver").newInstance();
Connection connection=DriverManager.getConnection(url);
Statement statement = connection.createStatement();
String sql="SELECT * FROM "+tableName;
ResultSet rs = statement.executeQuery(sql);
//获得数据结果集合
ResultSetMetaData rmeta = rs.getMetaData();
//确定数据集的列数，亦字段数
int numColumns=rmeta.getColumnCount();
// 输出每一个数据值
out.print("课程名称"+" ");
out.print("视频数目"+" ");
out.print("学习进度"+" ");
out.print("是否学习完毕"+" ");
out.print("<br>");
while(rs.next()) {
out.print(rs.getString(1)+" ");
out.print(rs.getString(2)+" ");
out.print(rs.getString(3)+" ");
out.print(rs.getString(4)+" ");
out.print("<br>");
}
out.print("<br>");
//out.print("数据库操作成功，恭喜你");
rs.close();
statement.close();
connection.close();
%>