1.9、测试连接

package com.wzy.text;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import javax.sql.DataSource;
import java.sql.Connection;
import java.sql.SQLException;
public class TestS {
    //1、读取配置文件
    ApplicationContext applicationContext =
            new ClassPathXmlApplicationContext("applicationContext.xml");
    @Test
    public void test1() throws SQLException {
        //2、反射得到 DataSource 的实例
        DataSource dataSource = applicationContext.getBean("dataSource", DataSource.class);
        System.out.println(dataSource);
        //3、获取连接
        Connection connection = dataSource.getConnection();
        System.out.println(connection);
    }
}