package jdbc; import java.io.IOException; import java.io.InputStream; import java.sql.Connection; import java.sql.DriverManager; import java.sql.SQLException; import java.util.Properties; public class JDBCUtil { public Connection getConnection(){ Connection connection = null; try { Properties properties = new Properties(); InputStream in = this.getClass().getClassLoader().getResourceAsStream("jdbc.properties"); properties.load(in); String user = properties.getProperty("user"); String password = properties.getProperty("password"); String jdbcUrl = properties.getProperty("jdbcUrl"); String driver = properties.getProperty("driver"); //加载驱动 Class.forName(driver); //返回连接 connection = DriverManager.getConnection(jdbcUrl, user, password); } catch (ClassNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } catch (SQLException e) { e.printStackTrace(); }finally{ if(connection != null){ try { connection.close(); } catch (SQLException e) { e.printStackTrace(); } } } return connection; } public static void main(String[] args) { Connection connection = new JDBCUtil().getConnection(); System.out.println(connection.toString()); } }