Jsp连接Mysql数据库(无连接池)

把mysql驱动直接拷贝到tomcat_home\common\lib下即可

<%@ 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="001";
//数据库名
String dbName="test";
//表名
String tableName="go";
//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("id");
out.print("|");
out.print("num");
out.print("
");
while(rs.next()) {
out.print(rs.getString(1)+" ");
out.print("|");
out.print(rs.getString(2));
out.print("
");
}
out.print("
");
out.print("数据库操作成功，恭喜你");
rs.close();
statement.close();
connection.close();

%>