mysql 之通过配置文件链接数据库

##MySQLdriver=com.mysql.jdbc.Driverurl=jdbc/:mysql/:///ake?useUnicode/=true&characterEncoding/=UTF-8username=rootpassword=1234##Oracle#driver=oracle.jdbc.driver.OracleDriver#url=jdbc:oracle:thin:@127.0.0.1:1521:orcl#username=scott#password=tiger

package Studying.d15;import java.io.FileInputStream;import java.sql.Connection;import java.sql.DriverManager;import java.util.Properties;public class ConnUtils {  private static Connection con = null;  static{    try {      Properties p = new Properties();      p.load( new FileInputStream("jdbc.properties") );      String driver = p.getProperty("driver");      String url = p.getProperty("url");      String username = p.getProperty("username");      String password = p.getProperty("password");      System.out.println(url+","+driver);      Class.forName(driver);      con = DriverManager.getConnection(url, username, password);    } catch (Exception e) {      e.printStackTrace();    }  }  public static Connection getConnection(){    return con;  }}