~~~ package cn.itcast.datasource.utils; /** * @author: hcf * @qq: 46914685 * @email: 46914685@qq.com */ import com.alibaba.druid.pool.DruidDataSourceFactory; import javax.sql.DataSource; import java.io.IOException; import java.sql.Connection; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Statement; import java.util.Properties; /** * Druid连接池的工具类 */ public class DruidUtils { //定义成员变量 DataSource private static DataSource ds; static { try { //1.加载配置文件 Properties pro = new Properties(); pro.load(DruidUtils.class.getClassLoader().getResourceAsStream("druid.properties")); //2.获取DataSource ds = DruidDataSourceFactory.createDataSource(pro); } catch (IOException e) { e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } } /** * 获取连接 */ public static Connection getConnection() throws SQLException { return ds.getConnection(); } /** * 释放资源 */ public static void close(Statement stmt, Connection conn) { if (stmt != null) { try { stmt.close(); } catch (SQLException throwables) { throwables.printStackTrace(); } } if (conn != null) { try { conn.close(); } catch (SQLException throwables) { throwables.printStackTrace(); } } } /** * 释放资源(重载) */ public static void close(ResultSet rs, Statement stmt, Connection conn) { if (stmt != null) { try { stmt.close(); } catch (SQLException throwables) { throwables.printStackTrace(); } } if (conn != null) { try { conn.close(); } catch (SQLException throwables) { throwables.printStackTrace(); } } if(rs!=null){ try { rs.close(); } catch (SQLException throwables) { throwables.printStackTrace(); } } } /** * 获取连接池方法 */ public static DataSource getDataSource(){ return ds; } } ~~~