Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'apiUserController': Unsatisfied dependency expressed through field 'apiMutiHttpClientUtil'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.crt.openapi.utils.ApiMutiHttpClientUtil' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
Description:
Field apiMutiHttpClientUtil in com.crt.openapi.apiinterface.controller.base.CommonController required a bean of type 'com.crt.openapi.utils.ApiMutiHttpClientUtil' that could not be found.
The injection point has the following annotations:
- @org.springframework.beans.factory.annotation.Autowired(required=true)
Action:
Consider defining a bean of type 'com.crt.openapi.utils.ApiMutiHttpClientUtil' in your configuration.
總是提示無法注入Service或者Dao中的Bean！
后來經研究發現，SpringBoot項目的Bean裝配默認規則是根據Application類所在的包位置從上往下掃描！
“Application類”是指SpringBoot項目入口類。這個類的位置很關鍵：
如果Application類所在的包為：com.demo.module，則只會掃描com.demo.module包及其所有子包，如果service或dao所在包不在com.demo.module及其子包下，則不會被掃描！
所以需在application啟動類中加上
@MapperScan("com.*.dao")//加上你項目的dao或service所在文件位置即可
@SpringBootApplication