2022-06-24 10:42:26.260 INFO 40840 --- [ main] com.siemens.mocker.MockerApp : Starting MockerApp on md60278c with PID 40840 (D:codejavaProjectspindle_mocker_backendtargetclasses started by z003nujf in D:codejavaProjectspindle_mocker_backend) 2022-06-24 10:42:26.263 INFO 40840 --- [ main] com.siemens.mocker.MockerApp : No active profile set, falling back to default profiles: default 2022-06-24 10:42:28.378 INFO 40840 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http) 2022-06-24 10:42:28.388 INFO 40840 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat] 2022-06-24 10:42:28.388 INFO 40840 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.41] 2022-06-24 10:42:28.504 INFO 40840 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext 2022-06-24 10:42:28.504 INFO 40840 --- [ main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 2165 ms 2022-06-24 10:42:28.627 INFO 40840 --- [ main] c.a.d.s.b.a.DruidDataSourceAutoConfigure : Init DruidDataSource 2022-06-24 10:42:28.733 WARN 40840 --- [ main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'mockDataController': Unsatisfied dependency expressed through field 'mockDataService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'MockDataService': Unsatisfied dependency expressed through field 'mockWorkerService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'MockWorkerService': Unsatisfied dependency expressed through field 'deviceFactory'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'DeviceFactory': Unsatisfied dependency expressed through field 'typeServiceMap'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'DeviceMockerService': Unsatisfied dependency expressed through field 'deviceInfoService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'DeviceInfoService': Unsatisfied dependency expressed through field 'baseMapper'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'deviceInfoDao' defined in file [D:codejavaProjectspindle_mocker_backendtargetclassescomsiemensmockerdaoDeviceInfoDao.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 [com/baomidou/mybatisplus/autoconfigure/MybatisPlusAutoConfiguration.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 [com/alibaba/druid/spring/boot/autoconfigure/DruidDataSourceAutoConfigure.class]: Invocation of init method failed; nested exception is org.springframework.boot.autoconfigure.jdbc.DataSourceProperties$DataSourceBeanCreationException: Failed to determine a suitable driver class 2022-06-24 10:42:28.733 INFO 40840 --- [ main] o.apache.catalina.core.StandardService : Stopping service [Tomcat] 2022-06-24 10:42:28.867 INFO 40840 --- [ main] ConditionEvaluationReportLoggingListener : Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled. 2022-06-24 10:42:28.867 ERROR 40840 --- [ main] o.s.b.d.LoggingFailureAnalysisReporter : *************************** APPLICATION FAILED TO START *************************** Description: Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured. Reason: Failed to determine a suitable driver class Action: Consider the following: If you want an embedded database (H2, HSQL or Derby), please put it on the classpath. If you have database settings to be loaded from a particular profile you may need to activate it (no profiles are currently active). Process finished with exit code 1判断数据库版本以及各式是否正确
#mysql8以下的版本，请检查pom.xml文件种依赖的mysql jar包的版本 driver-class-name: com.mysql.jdbc.Driver url: jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=UTF-8&useSSL=false #mysql8的版本 driver-class-name: com.mysql.cj.jdbc.Driver url: jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai系统未加载到配置文件
项目没有加载到yml或者properties文件，特别是自己的pom打包是jar的项目，请查看自己的pom.xml文件中的packaging。
步骤1
jar
如果pom中指定使用jar，系统不会自动读取到yml或者properties文件的，需要我们手动配置pom.xml。
步骤2.
src/main/java ***.properties ***.yaml ***.xml false org.springframework.boot >spring-boot-maven-plugin
