jdbc-- druid

druid

在访问量很大的情况下,明显看出druid和c3p0的区别

package cn.usts.edu.jdbc.druid;

import com.alibaba.druid.pool.DruidDataSourceFactory;

import javax.sql.DataSource;
import java.io.FileInputStream;
import java.sql.Connection;
import java.util.Properties;

/**
 * @author ：fly
 * @description: druid数据库连接池
 * @date ：2021/11/6 14:53
 */
public class DruidDemo {
    
    
    public static void main(String[] args) throws Exception {
    
    
        FileInputStream fileInputStream = new FileInputStream("src/druid-config.properties");
        Properties properties = new Properties();
        properties.load(fileInputStream);

        System.out.println("执行....");
        long start = System.currentTimeMillis();

        DataSource dataSource = DruidDataSourceFactory.createDataSource(properties);
        for (int i = 0; i < 500000; i++) {
    
    
            Connection connection = dataSource.getConnection();
            connection.close();
        }

        System.out.println("执行时间"+(System.currentTimeMillis()-start));
    }
}

配置文件

druid-config.properties
放src下

driverClassName=com.mysql.jdbc.Driver
url=jdbc:mysql://127.0.0.1:3306/persons?characterEncoding=UTF-8
username=root
password=123321
# 初始化连接数
initialSize=5
#最大连接数
maxActive=10
#超时时间
maxWait=3000