解决以Error: GlobalConfigUtils setMetaData Fail ! 为基础的嵌套问题（包括common troller，commonservice等问题）

run程序后出现了这个问题

Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'commonService': Unsatisfied dependency expressed through field 'commonDao'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'commonDao' defined in file [C:\springboot-schema\target\classes\com\dao\CommonDao.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [com/baomidou/mybatisplus/spring/boot/starter/MybatisPlusAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is com.baomidou.mybatisplus.exceptions.MybatisPlusException: Error: GlobalConfigUtils setMetaData Fail !  Cause:java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: YES)

它很长，而且总是会出现nest，原来是嵌套问题，这个是我看这篇文章了解的

https://blog.csdn.net/qq_50541673/article/details/123617180?ops_request_misc=&request_id=&biz_id=102&utm_term=Error%20creating%20bean%20with%20name%20&utm_medium=distribute.pc_search_result.none-task-blog-2~all~sobaiduweb~default-1-123617180.142^v13^rank_v32,157^v14^new_3&spm=1018.2226.3001.4187

然后我就找到了最根本的错误（嵌套里的最后一个），它的意思是我数据库没连上

Caused by: com.baomidou.mybatisplus.exceptions.MybatisPlusException: Error: GlobalConfigUtils setMetaData Fail !  Cause:java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: YES)

我看了一下我的application.yml,原来是我的密码没加‘’单引号，导致数据库连不上，无语了。

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解决以Error: GlobalConfigUtils setMetaData Fail ! 为基础的嵌套问题（包括common troller，commonservice等问题）

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