spring boot 跑junit 报错

在网上copy一个spring boot junit的实例，想要测试一下Request请求

http://blog.csdn.net/catoop/article/details/50752964

将url替换成可用地址后, run as ->  junit test 发现报错了，log如下：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Tomcat.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.tomcat.jdbc.pool.DataSource]: Factory method 'dataSource' threw exception; nested exception is org.springframework.boot.autoconfigure.jdbc.DataSourceProperties$DataSourceBeanCreationException: Cannot determine embedded database driver class for database type NONE. If you want an embedded database please put a supported one on the classpath. If you have database settings to be loaded from a particular profile you may need to active it (no profiles are currently active).

报错的意思是database没有配置好，database type为NONE。但实际上我的spring boot是可以启动，通过浏览器也是可以访问controller获取正确数据的。所以推断肯定是spring boot junit配置有问题。

然后又找了下资料发现

http://blog.csdn.net/u014695188/article/details/52262895

@RunWith(SpringJUnit4ClassRunner.class)  
@SpringBootTest(classes=Application.class)// 指定spring-boot的启动类   
//@SpringApplicationConfiguration(classes = Application.class)// 1.4.0 前版本  
public class SpringBootJdbcTest {

检查了下我的springboot版本是1.5.3。而junit 里的配置为

果断将SpringApplicationConfiguration 和WebAppConfiguration 替换为SpringBootTest

再跑，不再报错，测试通过。

再进一步查了下原因发现

 @SpringBootTest 会配置spring boot环境而@ContextConfiguration 只会配置spring环境。