【Spring Boot】Error creating bean with name ‘servletEndpointRegistrar‘ defined in class

末蓝、 2024-04-18 17:25 66阅读 0赞

org.springframework.context.ApplicationContextException: Unable to start
    web server; nested exception is java.lang.RuntimeException:
    org.springframework.beans.factory.BeanCreationException: Error creating
    bean with name 'servletEndpointRegistrar' defined in class path resource
    [org/springframework/boot/actuate/autoconfigure/endpoint/web/ServletEndpointManagementContextConfiguration$WebMvcServletEndpointManagementContextConfiguration.class]: Bean instantiation via factory method failed;
    nested exception is
    org.springframework.beans.BeanInstantiationException: Failed to
    instantiate
    [org.springframework.boot.actuate.endpoint.web.ServletEndpointRegistrar]: Factory method 'servletEndpointRegistrar' threw exception; nested
    exception is org.springframework.beans.factory.BeanCreationException:
    Error creating bean with name 'healthEndpoint' defined in class path
    resource
    [org/springframework/boot/actuate/autoconfigure/health/HealthEndpointConfiguration.class]: Bean instantiation via factory method failed; nested
    exception is org.springframework.beans.BeanInstantiationException:
    Failed to instantiate
    [org.springframework.boot.actuate.health.HealthEndpoint]: Factory method
    'healthEndpoint' threw exception; nested exception is
    org.springframework.beans.factory.BeanCreationException: Error creating
    bean with name
    'org.springframework.boot.actuate.autoconfigure.jdbc.DataSourceHealthIndicatorAutoConfiguration': Bean instantiation via constructor failed;
    nested exception is
    org.springframework.beans.BeanInstantiationException: Failed to
    instantiate
    [org.springframework.boot.actuate.autoconfigure.jdbc.DataSourceHealthIndicatorAutoConfigurationEnhancerBySpringCGLIB96597db7]: Constructor
    threw exception; nested exception is
    org.springframework.beans.factory.BeanCreationException: Error creating
    bean with name 'dataSource': Post-processing of FactoryBean's singleton
    object failed; nested exception is
    org.springframework.beans.factory.BeanCreationException: Error creating
    bean with name 'scopedTarget.dataSource' defined in class path resource
    [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Hikari.class]: Bean instantiation via factory method failed; nested
    exception is org.springframework.beans.BeanInstantiationException:
    Failed to instantiate [com.zaxxer.hikari.HikariDataSource]: Factory
    method 'dataSource' threw exception; nested exception is
    org.springframework.boot.autoconfigure.jdbc.DataSourceProperties$DataSourceBeanCreationException: Failed to determine a suitable driver class

**解决：**

上述的报错其实是JDBC数据库连接池在加载多数据源时没有读取到配置信息引起的。

为了描述清楚这个问题，我假设现在有一个Maven项目A，B、C、D分别是A的子模块（Maven Module），B作为A的基础模块，无论C、D模块是否存在只要A启动必须依赖B。

正常的情况下，B打包时带主类，而C和D在Maven打包的时候是不带主类作为组件包进行打包的，这样的话B和C、D模块就能够实现解耦。

但这次的错误在于JDBC连接池代码是在B模块中，而B+D时，D的Config Server配置中没有包含数据库连接池配置（Gitlab仓库配置中没有数据源配置信息）。因此在checkout下来的文件中并不存在连接池信息。而B需要启动时加载JDBC连接池，所以因为读取不到配置信息而报错。

面对这种情况要不就改变项目架构，要不就是在D的配置文件中加入连接池信息（如果是这个方案建议是在本地项目的bootstrap.yml中配置，因为GitLab中的是公共配置如果没有必要的就不要动了，宁愿在本地根据环境进行配置文件区分写死了算了）。当然了，最好肯定是稍微重构一下项目架构了。

【Spring Boot】Error creating bean with name ‘servletEndpointRegistrar‘ defined in class

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