SpringBoot 数据源测试

如下代码，数据源也可以注入，这样可以拿到DataSource，可以直接获取Connection，然后可以直接进行jdbc的处理：

import com.alibaba.druid.pool.DruidDataSource;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
import javax.annotation.Resource;
import javax.sql.DataSource;
import java.sql.Connection;
import java.sql.SQLException;
@RunWith(SpringRunner.class)
@SpringBootTest
public class DataSourceTest {
    @Resource
    private DataSource dataSource;
 
    @Test
    public void contextLoads() throws SQLException {
        System.out.println("数据源>>>>>>" + dataSource.getClass());
        Connection connection = dataSource.getConnection();
        System.out.println("连接>>>>>>>>>" + connection);
        System.out.println("连接地址>>>>>" + connection.getMetaData().getURL());
 
        if (dataSource instanceof DruidDataSource) {
            DruidDataSource druidDataSource = (DruidDataSource) dataSource;
            System.out.println("druidDataSource 数据源最大连接数：" + druidDataSource.getMaxActive());
            System.out.println("druidDataSource 数据源初始化连接数：" + druidDataSource.getInitialSize());
            System.out.println("version=" + druidDataSource.getVersion());
            System.out.println("name=" + druidDataSource.getName());
        }
        connection.close();
    } 
}