springboot启动报错：Error starting ApplicationContext. To display the auto-configuration report re-run yo

逃离我推掉我的手 2022-05-17 02:17 157阅读 0赞

今天想做个分布式的小demo,结果跑springboot的时候出错：

log4j:ERROR Could not find value for key log4j.appender.socket
    log4j:ERROR Could not instantiate appender named "socket".
    
      .   ____          _            __ _ _
     /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
    ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
     \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
      '  |____| .__|_| |_|_| |_\__, | / / / /
     =========|_|==============|___/=/_/_/_/
     :: Spring Boot ::        (v1.5.6.RELEASE)
    
    2018-08-05 10:56:03,815  INFO [StartupInfoLogger.java:48] : Starting Application on DESKTOP-VQJVA3M with PID 15236 (E:\zookeepr2\cs_service\target\classes started by ASUS in E:\zookeepr2\cs_service)
    2018-08-05 10:56:03,835  INFO [SpringApplication.java:593] : No active profile set, falling back to default profiles: default
    2018-08-05 10:56:03,881  INFO [AbstractApplicationContext.java:583] : Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@2e3fc542: startup date [Sun Aug 05 10:56:03 CST 2018]; root of context hierarchy
    2018-08-05 10:56:04,232  INFO [XmlBeanDefinitionReader.java:317] : Loading XML bean definitions from class path resource [dubbo/dubbo-provider.xml]
    2018-08-05 10:56:04,363  INFO [?:?] : using logger: com.alibaba.dubbo.common.logger.log4j.Log4jLoggerAdapter
    2018-08-05 10:56:04,412  WARN [ClassPathMapperScanner.java:166] : No MyBatis mapper was found in '[com.st.eleventh]' package. Please check your configuration.
    2018-08-05 10:56:04,857  WARN [AbstractApplicationContext.java:551] : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Tomcat.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.tomcat.jdbc.pool.DataSource]: Factory method 'dataSource' threw exception; nested exception is org.springframework.boot.autoconfigure.jdbc.DataSourceProperties$DataSourceBeanCreationException: Cannot determine embedded database driver class for database type NONE. If you want an embedded database please put a supported one on the classpath. If you have database settings to be loaded from a particular profile you may need to active it (no profiles are currently active).
    2018-08-05 10:56:04,865  INFO [AutoConfigurationReportLoggingInitializer.java:101] : 
    
    Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
    2018-08-05 10:56:04,870 ERROR [LoggingFailureAnalysisReporter.java:42] : 
    
    ***************************
    APPLICATION FAILED TO START
    ***************************
    
    Description:
    
    Cannot determine embedded database driver class for database type NONE
    
    Action:
    
    If you want an embedded database please put a supported one on the classpath. If you have database settings to be loaded from a particular profile you may need to active it (no profiles are currently active).
    
    2018-08-05 10:56:04,874  INFO [AbstractConfig.java:450] :  [DUBBO] Run shutdown hook now., dubbo version: 2.5.3, current host: 127.0.0.1
    2018-08-05 10:56:04,875  INFO [AbstractRegistryFactory.java:63] :  [DUBBO] Close all registries [], dubbo version: 2.5.3, current host: 127.0.0.1

启动类Application:

package com.st.eleventh;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
    import org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration;
    import org.springframework.context.annotation.ImportResource;
    
    @SpringBootApplication
    
    @ImportResource({  "classpath:dubbo/dubbo-provider.xml" })
    public class Application {
    
    	public static void main(String[] args) {
    		SpringApplication.run(Application.class, args);
    		try {
    			System.in.read();
    		} catch (Exception e) {
    			e.printStackTrace();
    		}
    	}
    }

经过排查：是因为springboot启动时会自动注入数据源和配置jpa

所以解决方法：

在@SpringBootApplication中排除其注入   
@SpringBootApplication(exclude=\{DataSourceAutoConfiguration.class,HibernateJpaAutoConfiguration.class\})

package com.st.eleventh;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
    import org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration;
    import org.springframework.context.annotation.ImportResource;
    
    @SpringBootApplication(exclude={DataSourceAutoConfiguration.class,HibernateJpaAutoConfiguration.class})
    @ImportResource({  "classpath:dubbo/dubbo-provider.xml" })
    public class Application {
    
    	public static void main(String[] args) {
    		SpringApplication.run(Application.class, args);
    		try {
    			System.in.read();
    		} catch (Exception e) {
    			e.printStackTrace();
    		}
    	}
    }

再次run项目，springboot能成功运行。

注：由于我只是测试下demo，没有用到数据库数据才

@SpringBootApplication(exclude=\{DataSourceAutoConfiguration.class,HibernateJpaAutoConfiguration.class\})；

项目用到数据库，只要你数据库连接，mapper映射配好，  直接@SpringBootApplication，运行项目就不会报这个错误。

### 我的座右铭：不会，我可以学；落后，我可以追赶；跌倒，我可以站起来；我一定行。 ###

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springboot启动报错：Error starting ApplicationContext. To display the auto-configuration report re-run yo

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