- import java.sql.*;
JDBC中所要用的包几乎都在import?java.sql.*;中;
- 在项目中导入Oracel或者是MySQL包和装载驱动:
项目的ClassPath和系统的ClassPath建议放在ClassPath,如果放在系统的ClassPath中如果版本不同,可能干扰系统中的不同的项目,放在项目下,降低项目之间的耦合性;
装载Oracle驱动:
Class.forName("oracle.jdbc.driver.OracleDriver");
装载MySQL驱动:
Class.forName("com.mysql.jdbc.Driver");
- 建立连接:
1.1、建立Oracle连接:
Connection conn = DriverManager.getConnection("jdbc:mysql://host:port/datebase","user","password");
2.1、建立MySQL连接:
Connection conn = DriverManager.getConnection("jdbc:mysql://host:port/datebase","user","password");
import java.sql.*; public class TestJDBC { public static void main(String[] args) throws Exception { //Class.forName("com.mysql.jdbc.Driver"); long start = System.currentTimeMillis(); new com.mysql.jdbc.Driver(); //Connection conn = DriverManager.getConnection("jdbc:mysql://host:port/datebase","user","password"); Connection conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/martin","root","admin"); //Connection conn = DriverManager.getConnection("jdbc:oracle:[email protected]:port:datebase","user","password"); //System.out.println(conn); System.out.println(conn); long end = System.currentTimeMillis(); System.out.println("建立连接耗时: "+(end - start)); } }
时间: 2024-11-08 20:19:04