JDBCUtils工具类

• 代码：

import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.pool.DruidDataSourceFactory;import javax.sql.DataSource;
import java.io.IOException;
import java.io.InputStream;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Properties;public class JDBCUtils {//定义成员变量 DataSourceprivate static DataSource ds;static {try {//加载配置文件Properties pro = new Properties();pro.load(JDBCUtils.class.getClassLoader().getResourceAsStream("druid.properties"));//获取DataSourceds = DruidDataSourceFactory.createDataSource(pro);} catch (IOException e) {e.printStackTrace();} catch (Exception e) {e.printStackTrace();}}//获取Connection对象public static Connection getConnection() throws SQLException {return ds.getConnection();}public static void close(Statement stmt,Connection conn){if (stmt != null) {try {stmt.close();} catch (SQLException e) {e.printStackTrace();}}if (conn != null) {try {conn.close();} catch (SQLException e) {e.printStackTrace();}}}//回收Connection连接public static void close(ResultSet rs, Statement stmt, Connection conn){if (rs != null) {try {rs.close();} catch (SQLException e) {e.printStackTrace();}}close(stmt,conn);}public DataSource getDataSource(){return ds;}
}