使用Mybatis报错Error creating bean with name ‘com.yg.mybatisgenerator.springbootTest.GeneratorTest’: Unsatisfied dependency expressed through field ‘xxxMapper’
‘com.yg.mybatisgenerator.springbootTest.GeneratorTest’: Unsatisfied dependency expressed through field
‘xxxMapper’)
问题背景
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name
'com.yg.mybatisgenerator.springbootTest.GeneratorTest': Unsatisfied dependency expressed through field
'generatorRecordMapper'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type
'com.yg.mybatisgenerator.dao.mysql.GeneratorRecordMapper' available: expected at least 1 bean which
qualifies as autowire candidate. Dependency annotations:
{@org.springframework.beans.factory.annotation.Autowired(required=true)}
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.yg.mybatisgenerator.dao.mysql.GeneratorRecordMapper' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1799)
解决方案
1 因为找不到mapper所在的地方，在启动类上添加mapper所在的路径，添加扫描注解@MapperScan
@MapperScan("com/data/dao/mysql")
@SpringBootApplication
心得
- @MapperScan就是去扫描mapper映射文件进行匹配
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