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11. 【Springエラー】Field ... required a bean of type ... hat could not be found.

エラー内容

Description:

Field ... in ... required a bean of type ' ... ' 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 ' ... ' in your configuration.

 

発生条件/原因/対処法

@Autowiredで指定しているクラスで上記のエラーが発生している場合、指定したクラス内で@Componentが指定されていない可能性がある。

@Componentを含むいずれかのアノテーションを指定しないと、@Autowiredできる対象とならないので注意。

 

 

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同階層のページ
  1. java.lang.IllegalStateException: CGLIB is required to process @Configuration classes. Either add CGLIB to the classpath or remove the following @Configuration bean definitions: [...]
  2. Error creating bean with name 'org.springframework.aop.config.internalAutoProxyCreator': Instantiation of bean failed; nested exception is java.lang.NoClassDefFoundError: Could not initialize class org.springframework.aop.aspectj.annotation.AnnotationAwareAspectJAutoProxyCreator
  3. No mapping found for HTTP request with URI ... in DispatcherServlet with name ...
  4. An internal error occurred during: "Building UI model". com/google/common/base/Function
  5. No identifier specified for entity : ...
  6. org.hibernate.hql.internal.ast.QuerySyntaxException: table_name is not mapped
  7. No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK?
  8. java.sql.SQLException: The server time zone value ' ... ' is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the serverTimezone configuration property) to use a more specifc time zone value if you want to utilize time zone
  9. Caused by: java.lang.RuntimeException: Executing an update/delete query
  10. Not supported for DML operations
  11. Field ... required a bean of type ... hat could not be found.
  12. Annotation-specified bean name ' ... ' for bean class [ ... ] conflicts with existing, non-compatible bean definition of same name and class [...]
  13. Whitelabel Error Page This application has no explicit mapping for /error, so you are seeing this as a fallback.
  14. Exception in thread "main" java.lang.UnsupportedClassVersionError: org/springframework/boot/loader/JarLauncher : Unsupported major.minor version 52.0

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