java几种连接数据库的方法

package bean;

import java.sql.Connection;
import java.sql.DriverManager;

public class jdbcTest {

//不同数据库连接方法有点不同，测试MySQL
private static String driver = "com.mysql.jdbc.Driver";
// Oracle为："oracle.jdbc.driver.OracleDriver "
// sql server为："com.microsoft.sqlserver.jdbc.SQLServerDriver"
private static String url="jdbc:mysql://localhost:3306/usejsp";
// Oracle为："jdbc:oracle:thin:@localhost:1521:orcl"
// sql server为："jdbc:sqlserver://localhost:1433;database=数据库名"

private static String username = "root";
private static String password = "123456";
static Connection conn = null;
public static Connection getConnection() {
try {
Class.forName(driver);
conn = DriverManager.getConnection(url, username, password);
System.out.println("连接成功");
} catch (Exception e) {
System.out.println("连接失败");
e.printStackTrace();
}
return conn;
}
}

测试

package bean;

public class test {

public static void main(String[] args) {
jdbcTest j =new jdbcTest();
j.getConnection();
}
}

结果