************************ APPLICATION FAILED TO START *************************** Description: 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.
spring-dao.xml （每个人给配置文件的命名有所不同，不一定是这个名，反正就是spring的xml配置文件）后面的报错信息，根据报错信息找到你自己的问题 我的报错信息是： Error creating bean...with name 'sqlSessionFactory' defined in class path resource [spring-dao.xml]: Initialization of bean...of type 'java.lang.String' to required type 'javax.sql.DataSource' for property 'dataSource': no matching...byname" 此方案参考文章：https://blog.csdn.net/weixin_43749065/article/details/84664474 项目的springBoot是使用class...目前收集了这么多，如果这篇文章能帮到你希望能留言让我知道我帮助了你~ 再更新一个 重复扫描了mapper，原理和网上找的方案差不多，都是两个配置文件里都扫描了mapper.class 发布者：全栈程序员栈长
参考： https://stackoverflow.com/questions/69061913/beancreationexception-error-creating-bean-with-name-configurationpropertiesbea
'beanNameViewResolver', defined in class path resource [cn/afterturn/easypoi/configuration/EasyPoiAutoConfiguration.class...A bean with that name has already been defined in class path resource [org/springframework/boot/autoconfigure...，表示后发现的bean会覆盖之前相同名称的bean。...2、debug数据源配置信息 1)、在启动参数添加spring.datasource.url 2)、同时断点debug数据源配置， 可以看到数据源配置信息，在启动参数里面spring.datasource.url...可以读到，但spring.datasource.username和spring.datasource.password没有读取到。
报错原因 org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'flywayInitializer...' defined in class path resource [org/springframework/boot/autoconfigure/flyway/FlywayAutoConfiguration...$FlywayConfiguration.class]: Invocation of init method failed; nested exception is org.flywaydb.core.api.FlywayException
Within the container itself, these bean definitions are represented as BeanDefinition objects, which...actual implementation class of the bean being defined....在容器本身内部，这些bean定义被表示成BeanDefinition对象，含有以下元数据： 包限定的类名：通常是被定义的bean的实现类。...This class attribute, which internally is a Class property on a BeanDefinition instance, is usually mandatory...class属性，在BeanDefinition实例的内部是Class性质，通常是必需的。（例外的情况，请看”使用实例工厂方法进行实例化”小节和3.7小节，”bean定义继承”）。
definition for bean 'userManager' with a different definition: replacing [Generic bean: class [com.lee.qsl.manager.UserManager...in file [D:\qsl-project\spring-boot-bean-component\target\classes\com\lee\qsl\manager\UserManager.class...in class path resource [com/lee/qsl/config/UserConfig.class]] 只是日志级别是 info ，太不显眼了 Spring 升级优化 可能 Spring...'userManager', defined in class path resource [com/lee/qsl/config/UserConfig.class], could not be registered...A bean with that name has already been defined in file [D:\qsl-project\spring-boot-bean-component\target
替换成了 ConfigurationClassBeanDefinition 后续通过 BeanDefinition 创建实例的时候，创建的自然就是 @Configuration + @Bean...in class path resource [com/lee/qsl/config/UserConfig.class]] 只是日志级别是 info ，太不显眼了 Spring 升级优化 可能...'userManager', defined in class path resource [com/lee/qsl/config/UserConfig.class], could not be registered...A bean with that name has already been defined in file [D:\qsl-project\spring-boot-bean-component\target...覆盖，默认情况下是不允许的 我们可以在配置文件中配置： spring.main.allow-bean-definition-overriding=true ，允许 BeanDefinition 覆盖
definition for bean 'userManager' with a different definition: replacing [Generic bean: class [com.lee.qsl.manager.UserManager... in class path resource [com/lee/qsl/config/UserConfig.class]] 只是日志级别是 info ，太不显眼了。...The bean 'userManager', defined in class path resource [com/lee/qsl/config/UserConfig.class], could not...A bean with that name has already been defined in file [D:\qsl-project\spring-boot-bean-component\target...启动时会给info级别的日志提示，同时会将@Configuration+@Bean修饰的 BeanDefinition覆盖掉@Component修饰的BeanDefinition。
背景 最近在使用高版本Spring Boot 2.x整合mybatis-plus 3.4.1时，控制台出现大量的warn提示XxxMapper重复定义信息：Bean already defined with...Bean already defined with the same name!...Bean already defined with the same name! 2 虽然这些警告并不影响程序正确运行，但是每次启动程序看到控制台输出这些警告日志信息，心情不是很美丽呀。...问题分析开挂模式 Maven 依赖 从Bean already defined with the same name警告信息来看，感觉应该是：重复加载 mapper 的 bean 对象定义了。...Bean already defined with the same name!")
in class path resource [spring-config.xml]] with [Generic bean: class [org.itstack.demo.bean.ProxyBeanFactory...="resource" value="spring/mybatis-config-datasource.xml"/> <bean class="org.itstack.demo.like.spring.MapperScannerConfigurer...ScannedGenericBeanDefinition 这里有一点，bean的定义设置时候，是把beanDefinition.setBeanClass(MapperFactoryBean.class)...name="resource" value="spring/mybatis-config-datasource.xml"/> <bean class="org.itstack.demo.like.spring.MapperScannerConfigurer...definitions from class path resource [test-config.xml] 你被代理了，执行SQL操作！
什么是BeanDefinition 在Java中，一切皆对象。在JDK中使用java.lang.Class来描述类这个对象。...Typically corresponds to a user-defined bean. */ int ROLE_APPLICATION = 0; /** * Role hint indicating...class name of this bean definition...on the local bean class...Iterate through the * originator chain to find the original BeanDefinition as defined by the user.
Bean already defined with the same name!...Bean already defined with the same name! 2 虽然这些警告并不影响程序正确运行，但是每次启动程序看到控制台输出这些警告日志信息，心情不是很美丽呀。...问题分析开挂模式 Maven 依赖 从Bean already defined with the same name警告信息来看，感觉应该是：重复加载 mapper 的 bean 对象定义了。...Bean already defined with the same name!")...有态度的良心总结 虽然提示Bean already defined with the same name警告信息的直接原因是pagehelper-spring-boot-starter和mybatis-plus-extension
, but 2 were found: - nacosRegistration: defined by method 'nacosRegistration' in class path resource...[com/alibaba/cloud/nacos/NacosDiscoveryAutoConfiguration.class] - eurekaRegistration: defined in BeanDefinition...defined in class path resource [org/springframework/cloud/netflix/eureka/EurekaClientAutoConfiguration..., but 2 were found: - nacosRegistration: defined by method 'nacosRegistration' in class path resource...[com/alibaba/cloud/nacos/NacosDiscoveryAutoConfiguration.class] - eurekaRegistration: defined in BeanDefinition
with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure...with name 'entityManagerFactoryBuilder' defined in class path resource [org/springframework/boot/autoconfigure...with name 'jpaVendorAdapter' defined in class path resource [org/springframework/boot/autoconfigure/...with name 'jpaVendorAdapter' defined in class path resource [org/springframework/boot/autoconfigure/...with name 'jpaVendorAdapter' defined in class path resource [org/springframework/boot/autoconfigure/
name ‘entityManagerFactory’ defined in class path resource [org/springframework/boot/autoconfigure/orm...with name ‘entityManagerFactoryBuilder’ defined in class path resource [org/springframework/boot/autoconfigure...with name ‘jpaVendorAdapter’ defined in class path resource [org/springframework/boot/autoconfigure/...orm/jpa/HibernateJpaConfiguration.class]: Bean instantiation via factory method failed; nested exception...=root spring.datasource.password=11111111 spring.datasource.driver-class-name=com.mysql.jdbc.Driver
Typically corresponds to a user-defined bean. */ int ROLE_APPLICATION = 0; /** * Role...class name of this bean definition...(); /** * Override the bean class name of this bean definition...method on the local bean class...Iterate through the * originator chain to find the original BeanDefinition as defined by the user
with name 'circulationa' defined in class path resource [config.xml]: Cannot resolve reference to bean...with name 'circulationb' defined in class path resource [config.xml]: Cannot resolve reference to bean...with name 'circulationa' defined in class path resource [config.xml]: Cannot resolve reference to bean...with name 'circulationb' defined in class path resource [config.xml]: Cannot resolve reference to bean...with name 'circulationb' defined in class path resource [config.xml]: Cannot resolve reference to bean
"Bean name must not be empty"); Assert.notNull(beanDefinition, "BeanDefinition must not be null...) 这个beanClass在上一篇了解到，创建BeanDefinition的时候如果有ClassLoader就通过返回拿到Class对象； *3.bd的overrides...(), beanName, "Cannot register bean definition [" + beanDefinition + "] for bean...if (this.logger.isWarnEnabled()) { this.logger.warn("Overriding user-defined...prepareMethodOverrides(); } } /** * Validate and prepare the method overrides defined
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