SpringBoot启动时报错：The bean 'dataSource', defined in BeanDefinition defined in class path resource

SpringBoot启动时报错：The bean 'dataSource', defined in BeanDefinition defined in class path resource

SpringBoot启动时报错：

The bean 'dataSource', defined in BeanDefinition defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Hikari.class], could not be registered. A bean with that name has already been defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Hikari.class] and overriding is disabled.

这个问题主要是由于springBoot跟SpringCloud版本包不兼容导致的，修改一下版本号，重新导入maven即可解决，附上一张SpringCloud官网的版本对照图，同学们可以根据对照图选择适合自己的包

Table 1. Release train Spring Boot compatibility

Release Train	Boot Version
Hoxton	2.2.x
Greenwich	2.1.x
Finchley	2.0.x
Edgware	1.5.x
Dalston	1.5.x

 

由于我用的springBoot版本是2.2.6，所以选择了Cloud为Hoxton的版本包

springBoot版本：

<parent>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-parent</artifactId>
   <version>2.2.6.RELEASE</version>
   <relativePath/> <!-- lookup parent from repository -->
</parent>

SpringCloud版本：

<dependencyManagement>
   <dependencies>
      <dependency>
         <groupId>org.springframework.cloud</groupId>
         <artifactId>spring-cloud-dependencies</artifactId>
         <version>Hoxton.SR4</version>
         <type>pom</type>
         <scope>import</scope>
      </dependency>
   </dependencies>
</dependencyManagement>

https://blog.csdn.net/j10000001/article/details/106037292/