When we develop spring boot jdbc applications , sometimes, we got this problem:
> Task :app3:bootRun FAILED . ____ _ __ _ _ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \ ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v2.3.2.RELEASE) 2020-11-21 16:14:00.386 INFO 62255 --- [ main] com.bswen.app3.Main : Starting Main on MBP-bswen with PID 62255 (/Users/bswen/bswen-springboot23/app3/build/classes/java/main started by bswen in /Users/bswen/bswen-springboot23/app3) 2020-11-21 16:14:00.389 INFO 62255 --- [ main] com.bswen.app3.Main : No active profile set, falling back to default profiles: default 2020-11-21 16:14:00.869 INFO 62255 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JDBC repositories in DEFAULT mode. 2020-11-21 16:14:00.888 INFO 62255 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 14ms. Found 0 JDBC repository interfaces. 2020-11-21 16:14:01.077 WARN 62255 --- [ main] s.c.a.AnnotationConfigApplicationContext : 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$Hikari.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.zaxxer.hikari.HikariDataSource]: Factory method 'dataSource' threw exception; nested exception is org.springframework.boot.autoconfigure.jdbc.DataSourceProperties$DataSourceBeanCreationException: Failed to determine a suitable driver class 2020-11-21 16:14:01.083 INFO 62255 --- [ main] ConditionEvaluationReportLoggingListener : Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled. 2020-11-21 16:14:01.086 ERROR 62255 --- [ 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). Execution failed for task ':app3:bootRun'. > Process 'command '/Library/Java/JavaVirtualMachines/jdk1.8.0_121.jdk/Contents/Home/bin/java'' finished with non-zero exit value 1
- mysql 5.1
- spring boot 2.3
You must specify the jdbc url/username/password for the spring boot application to connect.
Create a file named application.properties in src/main/resources directory. Add the following lines:
spring.datasource.url=jdbc:mysql://your_mysql_ip:3306/bswen1 spring.datasource.username=bswen spring.datasource.password=123456
You should change the ip address / username / password to match your settings.
All the code is upload to github, you can download the example code here.