How can custom ObjectMapper configuration be automatically wired in a Spring Boot project?

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To automatically wire custom ObjectMapper configuration in a Spring Boot project, you can do the following:

1. Create a new configuration class and annotate it with @Configuration.

2. Define a method in the configuration class that returns an ObjectMapper instance.

3. Annotate the method with @Bean to make it a Spring bean.

4. Customize the ObjectMapper instance according to your requirements.

5. Optionally, you can also use @Primary annotation to indicate that this bean should be preferred over other beans when there are multiple beans of the same type.

6. The configuration class will be automatically picked up by Spring Boot, and the ObjectMapper bean will be wired into your application wherever it is required.

Here's an example of how the configuration class would look like:

@Configuration
public class ObjectMapperConfig {

    @Bean
    @Primary
    public ObjectMapper objectMapper() {
        ObjectMapper objectMapper = new ObjectMapper();
        // customizations go here
        objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
        return objectMapper;
    }
}

In this example, we've defined a new ObjectMapper bean with the @Primary annotation to indicate that it should be preferred over other ObjectMapper beans in the application. We've also configured the ObjectMapper to ignore unknown properties during deserialization. This customization can be tailored according to the specific requirements of the application.