Druid连接池使用

package jdbc;

import com.alibaba.druid.pool.DruidDataSourceFactory;

import javax.sql.DataSource;
import java.io.InputStream;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.Properties;


public class Druid {
    //使用Druid数据库连接池的配置文件方式，获取数据库的连接：推荐
    //src下的配置文件为：【druid.properties】
    //使用代码块创建连接池，避免每次调用都创建连接池
    private static DataSource source;
    static {
        try {
            //加载配置文件
            Properties pros = new Properties();
            InputStream is = Druid.class.getClassLoader().getResourceAsStream("druid.properties");
            pros.load(is);
            //根据提供的DruidDataSourceFactory创建对应的DataSource对象
            source = DruidDataSourceFactory.createDataSource(pros);
        }catch (Exception e){
            e.printStackTrace();
        }
    }
    public static Connection getConnection(){
        Connection connection = null;
        try {
            connection = source.getConnection();
        } catch (SQLException throwables) {
            throwables.printStackTrace();
        }
        return connection;
    }

}

url=jdbc:mysql://localhost:3306/book?rewriteBatchedStatements=true&useServerPrepStmts=false&useUnicode=true&characterEncoding=utf8
username=root
password=123456
driverClassName=com.mysql.cj.jdbc.Driver
initialSize=10
maxActive=20
maxWait=1000
filters=wall