Bean property ‘mapperHelper’ is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?

本文转载自查看原文 2019-10-21 22:21 341 异常

spring boot 报错：
Caused by: org.springframework.beans.NotWritablePropertyException:
 Invalid property ‘mapperHelper’ of bean class [org.mybatis.spring.mapper.MapperFactoryBean]:
 Bean property ‘mapperHelper’ is not writable or has an invalid setter method. 
Does the parameter type of the setter match the return type of the getter?

原因是：通用mapper不支持热部署，不支持devtool。

解决方法：在pom.xml屏蔽掉热部署就OK了。

<!-- 热启动配置  -->
 <dependency>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-devtools</artifactId>
     <optional>true</optional>
 </dependency>

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