jsp连接mysql数据库

1.新建一个javaweb项目。

2.导入mysql驱动包。（这个跟上一篇写的Java连接mysql类似）

3.编写测试代码

<%@ page contentType="text/html;charset=UTF-8" language="java" %><%@ page language="java" %><%@ page import="com.mysql.jdbc.Driver" %><%@ page import="java.sql.*" %><%  String driverName="com.mysql.jdbc.Driver";  String userName="root";  String userPasswd="root";  String dbName="goods";  String tableName="t_admin";  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);  ResultSetMetaData rmeta = rs.getMetaData();  int numColumns=rmeta.getColumnCount();  out.PRint("id");  out.print("|");  out.print("num");  out.print("<br>");  while(rs.next()) {    out.print(rs.getString(1)+" ");    out.print("|");    out.print(rs.getString(2));    out.print("<br>");  }  out.print("<br>");  out.print("数据库操作成功，恭喜你");  rs.close();  statement.close();  connection.close();%>

4.把mysql的驱动包拷贝到tomcat的lib目录一份。

5.打开浏览器，运行测试文件。