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关于解决springcloud 创建bean失败的问题

news 来源：原创 2025/5/19 18:06:07

今天学习springcloud的时候，手动导入关于springboot和springcloud的jar包，启动代码的时候发现出了一大段问题：

2022-09-14 22:30:38.800 ERROR 15520 — [ main] o.s.boot.SpringApplication : Application run failed

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name ‘deptController’: Unsatisfied dependency expressed through field ‘deptService’; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name ‘deptServiceImpl’: Unsatisfied dependency expressed through field ‘deptDao’; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name ‘deptDao’ defined in file [C:UsersCharonIdeaProjectsspringcloudspringcloud-provider-dept-8001 argetclassescomspringcloudDaoDeptDao.class]: Unsatisfied dependency expressed through bean property ‘sqlSessionFactory’; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name ‘sqlSessionFactory’ defined in class path resource [org/mybatis/spring/boot/autoconfigure/MybatisAutoConfiguration.class]: Unsatisfied dependency expressed through method ‘sqlSessionFactory’ parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘dataSource’ defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration $KaTeX parse error: Can't use function '\]' in math mode at position 14: Generic.class\̲]̲: Bean instanti…$ AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:659) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor $KaTeX parse error: Undefined control sequence: \[ at position 78: …sor.java:639) ~\̲[̲spring-beans-5.…$ doGetBean $KaTeX parse error: Undefined control sequence: \[ at position 34: …ory.java:335) ~\̲[̲spring-beans-5.…$ Generic.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.sql.DataSource]: Factory method ‘dataSource’ threw exception; nested exception is java.lang.NoSuchMethodError: org.springframework.boot.jdbc.EmbeddedDatabaseConnection.isEmbedded(Ljava/lang/String;)Z
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor $KaTeX parse error: Undefined control sequence: \[ at position 89: …sor.java:659) ~\̲[̲spring-beans-5.…$ AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:639) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:119) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1431) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:619) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean $KaTeX parse error: Undefined control sequence: \[ at position 34: …ory.java:335) ~\̲[̲spring-beans-5.…$ AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:656) ~[spring-beans-5.3.22.jar:5.3.22]
… 20 common frames omitted
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name ‘deptDao’ defined in file [C:UsersCharonIdeaProjectsspringcloudspringcloud-provider-dept-8001 argetclassescomspringcloudDaoDeptDao.class]: Unsatisfied dependency expressed through bean property ‘sqlSessionFactory’; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name ‘sqlSessionFactory’ defined in class path resource [org/mybatis/spring/boot/autoconfigure/MybatisAutoConfiguration.class]: Unsatisfied dependency expressed through method ‘sqlSessionFactory’ parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘dataSource’ defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration $KaTeX parse error: Can't use function '\]' in math mode at position 14: Generic.class\̲]̲: Bean instanti…$ doGetBean $KaTeX parse error: Undefined control sequence: \[ at position 34: …ory.java:335) ~\̲[̲spring-beans-5.…$ AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:656) ~[spring-beans-5.3.22.jar:5.3.22]
… 34 common frames omitted
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name ‘sqlSessionFactory’ defined in class path resource [org/mybatis/spring/boot/autoconfigure/MybatisAutoConfiguration.class]: Unsatisfied dependency expressed through method ‘sqlSessionFactory’ parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘dataSource’ defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration $KaTeX parse error: Can't use function '\]' in math mode at position 14: Generic.class\̲]̲: Bean instanti…$ doGetBean $KaTeX parse error: Undefined control sequence: \[ at position 34: …ory.java:335) ~\̲[̲spring-beans-5.…$ Generic.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.sql.DataSource]: Factory method ‘dataSource’ threw exception; nested exception is java.lang.NoSuchMethodError: org.springframework.boot.jdbc.EmbeddedDatabaseConnection.isEmbedded(Ljava/lang/String;)Z
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:658) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:638) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1352) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1195) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean $KaTeX parse error: Undefined control sequence: \[ at position 34: …ory.java:335) ~\̲[̲spring-beans-5.…$ Generic.dataSource(DataSourceConfiguration.java:122) ~[spring-boot-autoconfigure-2.3.0.RELEASE.jar:2.3.0.RELEASE]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_342]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_342]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_342]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_342]
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.3.22.jar:5.3.22]
… 73 common frames omitted

上网查到了许多解决方案，进行逐一尝试

1、相关的注释没给到位

重复检查controller层的@Restcontroller service层的@service 和dao层的@mapper,发现没有任何错误，不是这个问题

2、yml配置文件出错

先检查yml配置文件的内容，datasource没问题，mybatis的配置也没问题，排除内容出错，上网查到了可能是配置文件的路径发生错误，yml没有读取到，重复更改yml的路径，甚至使用propreties文件，也没能解决问题，于是排除配置文件的问题

3.发生版本冲突

可能使用pom的时候导入的springboot和springcloud发生冲突，或者重复导入多个jar包，idea不知道识别哪一个文件，查看所有依赖的版本，发现springboot的版本和spring的版本都有重复，且不一致，还可能与springcloud的版本发生冲突，于是查询最适合的springboot版本和与其对应的springcloud的版本，1、SpringCloud： Hoxton.SR8
2、SpringBoot：2.3.3.RELEASE

重新创建一个maven，并将之前的代码复制粘贴，只改变springboot和springcloud的版本，最后成功运行