SpringBoot学习笔记17——解决application.properties文件不生效的问题

今天遇到了一个问题，坑了我好久。

先看异常

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2018-11-13 22:43:21.076 ERROR 3044 --- [           main] o.s.b.d.LoggingFailureAnalysisReporter   : 

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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).
 

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期初我遇到这个问题我以为是我配置的哪块出了问题，到最后才发现原来是方向想错了，实际上我的配置没有问题，在运行时，application.properties文件没有被自动复制到target文件夹下。

发现问题之后问题就比较好解决了。

将pom文件中的

pom

修改为

jar

就可以了