配置文件连接数据库

dataBase.properties

jdbc.drivers=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/test
jdbc.username=root
jdbc.password=root

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类JdbcUtil

private static Connection conn;
private static PreparedStatement pstmt;
private static ResultSet rs;

public static Connection getConnection() throws IOException, SQLException, ClassNotFoundException
{
Properties prop = new Properties();
FileInputStream fis = new FileInputStream("src/dataBase.properties");
prop.load(fis);
fis.close();

String drivers = prop.getProperty("jdbc.drivers");
String url = prop.getProperty("jdbc.url");
String username = prop.getProperty("jdbc.username");
String password = prop.getProperty("jdbc.password");
//System.out.println(drivers+url+username+password);

Class.forName(drivers);
conn = DriverManager.getConnection(url, username, password);

return conn;
}