异常：
Caused by: org.springframework.boot.context.properties.bind.BindException: Failed to bind properties under 'mapper.mappers' to java.util.List<java.lang.Class<?>> at org.springframework.boot.context.properties.bind.Binder.handleBindError(Binder.java:364) ~[spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.context.properties.bind.Binder.bind(Binder.java:324) ~[spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.context.properties.bind.Binder.lambda$bindDataObject$4(Binder.java:448) ~[spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.context.properties.bind.JavaBeanBinder.bind(JavaBeanBinder.java:90) ~[spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.context.properties.bind.JavaBeanBinder.bind(JavaBeanBinder.java:79) ~[spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.context.properties.bind.JavaBeanBinder.bind(JavaBeanBinder.java:56) ~[spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.context.properties.bind.Binder.lambda$bindDataObject$5(Binder.java:452) ~[spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.context.properties.bind.Binder$Context.withIncreasedDepth(Binder.java:572) ~[spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.context.properties.bind.Binder$Context.withDataObject(Binder.java:558) ~[spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.context.properties.bind.Binder$Context.access$400(Binder.java:513) ~[spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.context.properties.bind.Binder.bindDataObject(Binder.java:450) ~[spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.context.properties.bind.Binder.bindObject(Binder.java:384) ~[spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.context.properties.bind.Binder.bind(Binder.java:320) ~[spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.context.properties.bind.Binder.bind(Binder.java:308) ~[spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.context.properties.bind.Binder.bind(Binder.java:238) ~[spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.context.properties.bind.Binder.bind(Binder.java:199) ~[spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.context.properties.bind.Binder.bind(Binder.java:186) ~[spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] ... 32 common frames omitted Caused by: org.springframework.core.convert.ConverterNotFoundException: No converter found capable of converting from type [java.lang.String] to type [java.util.List<java.lang.Class<?>>] at org.springframework.core.convert.support.GenericConversionService.handleConverterNotFound(GenericConversionService.java:321) ~[spring-core-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.core.convert.support.GenericConversionService.convert(GenericConversionService.java:194) ~[spring-core-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.boot.context.properties.bind.BindConverter$CompositeConversionService.convert(BindConverter.java:170) ~[spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.context.properties.bind.BindConverter.convert(BindConverter.java:96) ~[spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.context.properties.bind.IndexedElementsBinder.convert(IndexedElementsBinder.java:142) ~[spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.context.properties.bind.IndexedElementsBinder.bindValue(IndexedElementsBinder.java:95) ~[spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.context.properties.bind.IndexedElementsBinder.bindIndexed(IndexedElementsBinder.java:83) ~[spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.context.properties.bind.IndexedElementsBinder.bindIndexed(IndexedElementsBinder.java:71) ~[spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.context.properties.bind.CollectionBinder.bindAggregate(CollectionBinder.java:49) ~[spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.context.properties.bind.AggregateBinder.bind(AggregateBinder.java:56) ~[spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.context.properties.bind.Binder.lambda$bindAggregate$3(Binder.java:415) ~[spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.context.properties.bind.Binder$Context.withIncreasedDepth(Binder.java:572) ~[spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.context.properties.bind.Binder$Context.access$100(Binder.java:513) ~[spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.context.properties.bind.Binder.bindAggregate(Binder.java:415) ~[spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.context.properties.bind.Binder.bindObject(Binder.java:376) ~[spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.context.properties.bind.Binder.bind(Binder.java:320) ~[spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] ... 47 common frames omitted 2020-03-17 13:51:21.797 WARN 11892 --- [ restartedMain] t.m.s.mapper.ClassPathMapperScanner : No MyBatis mapper was found in '[cn.cx.req.dao]' package. Please check your configuration. 2020-03-17 13:51:22.056 ERROR 11892 --- [ restartedMain] o.s.b.d.LoggingFailureAnalysisReporter : *************************** APPLICATION FAILED TO START *************************** Description: Failed to bind properties under 'mapper.mappers' to java.util.List<java.lang.Class<?>>: Reason: No converter found capable of converting from type [java.lang.String] to type [java.util.List<java.lang.Class<?>>] Action: Update your application's configuration Disconnected from the target VM, address: '127.0.0.1:52096', transport: 'socket' Process finished with exit code 0
解决办法：配置文件中mappers类或路径配置错误
mapper: #通用mapper mappers: cn.xx.BaseMapper