在 IntelliJ IDEA 中初始化 SpringBoot 2 应用程序时出现 NoClassDefFoundError

Question

I have a SpringBoot 2 application, that when starts I got this error:

...
Caused by: java.lang.NoClassDefFoundError: Lcom/bonanza/BonanzaHelper;

I went to the service that uses this class:

public class BonanzaService {   
    @Autowired
    private BonanzaHelper bonanzaHelper;

I use Ctrl and click on the class and I got this message: Cannot find declaration to go to but if I use Shift + Ctrl + N I can find the class in my maven repositoy

the class is imported in a parent group in the pom.xml

Answer 1

it may look like one of the following: 1. You may have two dependencies in the pom that point to a different version of the artifact with different locations

2. The class is not declared as Bean, so you can autowired it, you can do it in the @configuration file:

   @Bean public ObjectMapper bonanzaHelper() { return new BonanzaHelper();}