解决Error creating bean with name xxx defined in class path resource [applicationContext.xml]错误

今天使用基于MapperFactoryBean来实现MyBatis与Spring的整合，使用Mapper接口编程，一直报一个错误,调试了很久

org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘customerMapper’ defined in class path resource [applicationContext.xml]: Initialization of bean failed; nested exception is org.springframework.beans.TypeMismatchException: Failed to convert property value of type ‘java.lang.String’ to required type ‘java.lang.Class’ for property ‘mapperInterface’; nested exception is java.lang.IllegalArgumentException: Cannot find class [mapper.CustomerMapper]

调试了很久，才发现是Mapper接口的名称和对应的Mapper.xml映射文件的名称不一致

在使用Mapper接口编程的方式，需要遵循一些规范

Mapper接口的名称和对应的Mapper.xml映射文件的名称必须一致
Mapper.xml文件中的namespace与Mapper接口的类路径相同
Mapper接口中的方法名和Mapper.xml中定义的每个执行语句的id相同
Mapper接口中方法的输入参数类型要和Mapper.xml中定义的每个sql的parameterType的类型相同
Mapper接口方法的输出参数类型要和Mapper.xml中定义的每个sql的resultType的类型相同

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解决Error creating bean with name xxx defined in class path resource [applicationContext.xml]错误

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