Spring-boot: DataSource FailureAnalyzer wrongly assumes that only auto-configuration can throw a DataSourceBeanCreationException

[PingGao89]

hi
application.properties has configured spring.datasource.url value in src/main/resources,Startup class configuration:

@SpringBootApplication
@EnableAutoConfiguration(exclude = {DataSourceAutoConfiguration.class}) 
@ComponentScan
public class Application {
    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}

Run, throw Failed to auto-configure a DataSource: 'spring.datasource.url' is not specified and no embedded datasource could be auto-configured

[wilkinsona]

@PingGao89 Unfortunately, we don't have the time to diagnose a problem from a handful of lines of code. If you would like us to spend some time investigating, please spend some time to provide a complete example of the problem. You should also review your annotations. @SpringBootApplication is a combination of @EnableAutoConfiguration, @ComponentScan, and @Configuration so you have some duplication there.

[PingGao89]

hi
my code
springboot-test.zip

[snicoll]

@PingGao89 welcome to the wonderful world of YAML. Your properties are missing a space so there are simply ignored. If I am adding a space between : and the value for all properties, the app attempts to connect to the configured database.

Your sample is very interesting as it shows a regression: you are using our infrastructure that might throw an exception and the failure analyzer wrongly assumes that the auto-configuration is at play so you get something like Failed to auto-configure a DataSource: while the exception is coming from your own code (you can see that by enabling the debug log).

We will use this issue to fix the message.

[PingGao89]

😢 Thank you for solving the problem