Druid database connection pooling tools

package cn.itcast.utils;

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;

/**
 * @author newcityman
 * @date 2019/8/16 - 23:56
 * Druid 的工具类
 */
public class JDBCUtils {
 // 1、定义成员变量DataSource
 private static DataSource ds;

 static {
 {the try 
// 2, load the configuration files 
the Properties Pro = new new the Properties () ; 
pro.load (. JDBCUtils . class.getClassLoader () the getResourceAsStream ( "druid.properties")) ; 
//. 3, obtaining a connection object the Datasource DS = DruidDataSourceFactory . CreateDataSource (Pro) ; } the catch (IOException E) { e.printStackTrace () ; } the catch (Exception E) { e.printStackTrace () ; } } / * * Get method of connecting * * / public static connection getConnetion () SQLException {throws return ds.getConnection () ; } / *
 







 


 
 


 
 * 释放资源
 * */
 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();
 }
 }*/
 close(null,stmt,conn);
 }

 /*
 * 释放资源
 * */
 public static void close(ResultSet rs,Statement stmt, Connection conn){
 if(rs!=null){
 try {
 rs.close();
 } catch (SQLException e) {
 e.printStackTrace();
 }
 }

 if(stmt!=null){
 try {
 stmt.close();
 } catch (SQLException e) {
 e.printStackTrace();
 }
 }

 if(conn!=null){
 try {
 conn.close();
 } catch (SQLException e) {
 e.printStackTrace();
 }
 }

 }
 
 /*
 * 获取连接池方法
 * */
 public static DataSource getDataSource(){
 return ds;
 }

}