原 Reason: The elements [mybatis-plus.mapper-locations[0].classpath] were left unbound.

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一：项目集成mybatils-plus 异常信息如下：

Binding to target [Bindable@1bde767a type = java.lang.String[], value = 'provided', annotations = array<Annotation>[[empty]]] failed:
 
    Property: mybatis-plus.mapper-locations[0].classpath
    Value: mapper/**/*.xml
    Origin: class path resource [application-dev.yml] - 32:18
    Reason: The elements [mybatis-plus.mapper-locations[0].classpath] were left unbound.
 
Action:
 
Update your application's configuration

二：原因：- classpath: mapper/**/*.xml，中间有空格导致的。

错误写法：

正确写法：

正确的yml如下：

mybatis-plus:
  type-aliases-package: com.mszl.api.entity # 所有Entity别名类所在包
  mapper-locations:
    - classpath:mapper/**/*.xml # mapper映射文件