背景:4月5号中午,终于学完了SpringBoot的基本路线!休息几个小时,趁机会把SpringBoot的踩坑出坑记录一下
ps: 大神勿喷
错误:
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name ‘articleServiceImpl‘: Unsatisfied dependency expressed through field ‘baseMapper‘; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type ‘com.xx.blog.mapper.ArticleMapper‘ available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
错误场景:使用mybatisPlus代码生成器,通过数据库逆向生成代码。导致代码报错
解决方案:
在生成的 mapper 接口上添加注解@Mapper 或 在启动类上添加注解 @MapperScan("mapper包名") |
或者
推荐:
推荐在SpringBoot的启动类上添加注解@MapperScan("mapper包名") 一劳永逸 不然需要在所有的mapper接口上添加注解 @Mapper
错误:
Description:
A component required a bean of type ‘com.xx.blog.mapper.ArticleMapper‘ that could not be found.
Action:
Consider defining a bean of type ‘com.xx.blog.mapper.ArticleMapper‘ in your configuration.
Process finished with exit code 0
错误场景: 在解决上面的错误之后又出现的错误 , 组件需要找不到“com.xx.blog.mapper.ArticleMapper”类型的bean。
解决方案:
在生成的mapper实体类上添加注解@Repository 将Mapper交给Spring管理 |
错误 :
java.lang.IllegalStateException: Failed to load property source from location ‘classpath:/application.yml
错误场景:application.yml 就是一个大坑,如果出现以上情况,一般就是application.yml这个文件中有语法错误。
解决方案:
注释错误引起(application.yml采用的是#注释而不是//,而且# 后面必须跟一个空格) 缩进采用空格,千万不要用tab 每个冒号后面一定要有一个空格否则会报错 |
SpringBoot-mybatisPlus-代码生成器-yaml 错误
原文:https://www.cnblogs.com/kkdaj/p/12638909.html