蘑菇博客部署-SpringBoot启动错误:Could not resolve placeholder ‘spring.datasource.url‘ in value “${spring...

SpringBoot启动错误:Could not resolve placeholder ‘spring.datasource.url’ in value “${spring.datasource.url}”

解决方案:项目在配置更改后要对maven进行clean,install的操作,清除以重新编译项目

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