改造为Maven多模块项目报错:If you want an embedded database (H2, HSQL or Derby), please put it on the classpath

素颜马尾好姑娘i 2023-02-19 15:29 42阅读 0赞

## 情景 ##

一个Maven单模块项目改造为多模块项目后，发现报错：

***************************
    APPLICATION FAILED TO START
    ***************************
    
    Description:
    
    Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.
    
    Reason: Failed to determine a suitable 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).
    
    
    Process finished with exit code 1

## 一种可行的解决方案 ##

如果是Maven多模块项目，查看IDEA右上角`Edit Configurations -> Use classpath of module`，此栏应为 包含程序入口的`xxxApplication.java`和`application.yml`的module：

![截屏2020-06-21下午3.41.22][2020-06-21_3.41.22]

如上图，博主的程序入口`xxxApplication.java`和`application.yml`放置于`server`这个module，`brother-takeaway-order`是之前单体模块的名称。把此处的module切换为`server`，即可解决报错。

[2020-06-21_3.41.22]: https://imgconvert.csdnimg.cn/aHR0cHM6Ly9pbWFnZS1ob3N0aW5nLmplbGx5ZmlzaG1peC5jb20vMjAyMDA2MjExNTQyMDcucG5n?x-oss-process=image/format,png

改造为Maven多模块项目报错:If you want an embedded database (H2, HSQL or Derby), please put it on the classpath

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