If you want an embedded database (H2, HSQL or Derby), please put it on the classpath.

学习Spring Boot 过程中遇到了下列这个问题

Description:

Failed to configure a DataSource: ‘url‘ attribute is not specified and no embedded datasource could be configured.
//无法配置数据库,没有指定url属性,并且无法配置embedded datasource
Reason: Failed to determine a suitable driver class
//原因:无法明确指定正确的驱动类(driver.class)

Action:

Consider the following:
If you want an embedded database (H2, HSQL or Derby), please put it on the classpath.
If you have database settings to be loaded from a particular profile you may need to activate it (no profiles are currently active).

//建议:
//如果如果需要加载嵌入式的数据库,请将他放入路径中
//如果有数据库设置需要从指定配置文件中加载,需要调用该配置文件(目前没有活动的配置文件)

Process finished with exit code 1
在网上找了很多答案,

其中的一篇:https://www.cnblogs.com/yourGod/p/9178515.html

按照上述的解决办法:)

程序入口处:

@SpringBootApplication
public class DemoApplication {

修改为:
@SpringBootApplication(exclude = DataSourceAutoConfiguration.class)
public class DemoApplication {
也许你改成这样子 ,问题就解决了, 但是我的没有解决,加了这个产生了一个新的问题:

Description:

Field userRepository in com.wcyq.demo.service.impl.UserServiceImpl required a bean of type ‘com.wcyq.demo.domain.UserRepository‘ that could not be found.

Action:

Consider defining a bean of type ‘com.wcyq.demo.domain.UserRepository‘ in your configuration.

Process finished with exit code 1
出现这个问题,看看是否 程序入口的 xxxApplication.java 是否在最外层的包下.如果不是,把该类放在最外层的包下面

参考自:https://blog.csdn.net/zhouyingge1104/article/details/78267882/

也许你走到这一步,问题就已经得到解决了

但是我发现上面这篇还是没有能够帮助到我. 依然还是上述问题提示错误信息.

继续寻找错误

是否缺少注解

@Service //该注解必须加上,否者会导致上述错误
public class UserServiceImpl implements UserService {
  参考自:https://blog.csdn.net/cutterwolf/article/details/77862652

但是我发现我加了注解,还是一样有这个错误,怎么办?

还是包没有扫到,继续添加:

@SpringBootApplication(exclude = DataSourceAutoConfiguration.class,scanBasePackages={ "com.wcyq.demo"})
public class DemoApplication {
程序依旧还是那个错误;

后面又找了一下问题,把程序全部rebuild   还有有同样的问题, 最后干脆重新新建项目,然后按照教程重新运行了下,没有发现上述的其他问题, 搞不懂什么鬼,先记录在这里!
---------------------
作者:一往无前-千夜
来源:CSDN
原文:https://blog.csdn.net/wolfking0608/article/details/82886062
版权声明:本文为博主原创文章,转载请附上博文链接!

原文地址:https://www.cnblogs.com/zhulina-917/p/10489189.html

时间: 2024-11-01 17:53:27

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