Druid数据库连接池的使用

Druid  阿里提供的数据库连接池，集以上连接池优点于一身，开发使用此连接池

使用配置文件方式获取Druid数据库连接池

TestDruid

package com.aff.connection;
 
import java.io.InputStream;
import java.sql.Connection;
import java.util.Properties;
import javax.sql.DataSource;
import org.junit.Test;
import com.alibaba.druid.pool.DruidDataSourceFactory;
 
//使用配置文件方式获取Druid数据库连接池
public class TestDruid {
    @Test
    public void getConnection() throws Exception {
        Properties pros = new Properties();
        InputStream is = ClassLoader.getSystemClassLoader().getResourceAsStream("druid.properties");
        pros.load(is);
        DataSource source = DruidDataSourceFactory.createDataSource(pros);
        Connection conn = source.getConnection();
        System.out.println(conn);
    }
}

使用Druid数据连接池获取连接

JDBCUtilsDruid

package com.aff.util;
import java.io.InputStream;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.Properties;
import javax.sql.DataSource;
import com.alibaba.druid.pool.DruidDataSourceFactory;
 
//使用Druid数据连接池获取连接
public class JDBCUtilsDruid {
    private static DataSource source;
    static {
        try {
            Properties pros = new Properties();
            InputStream is = ClassLoader.getSystemClassLoader().getResourceAsStream("druid.properties");
            pros.load(is);
            source = DruidDataSourceFactory.createDataSource(pros);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
 
    public static Connection getConnection() throws SQLException {
        Connection conn = source.getConnection();
        return conn;
    }
}

测试Druid数据库连接池获取的连接的使用

    @Test
    public void testGetCount() {
        Connection conn = null;
        try {
            conn = JDBCUtilsDruid.getConnection();
            Long count = dao.getCount(conn);
            System.out.println(count);
            System.out.println("获取成功");
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            JDBCUtils.closeResource(conn, null);
        }
    }

目录结构