找不到能够从类型com.mongodb.BasicDBObject转换为类型org.springframework.security.oauth2.provider.OAuth2Authenticatio的转换器

import org.springframework.core.convert.converter.Converter;
import com.mongodb.BasicDBObject;
import org.springframework.security.oauth2.provider.OAuth2Authentication;

public class BasicDBObjectToOAuth2AuthenticationConverter implements Converter<BasicDBObject, OAuth2Authentication> {

    @Override
    public OAuth2Authentication convert(BasicDBObject source) {
        // 在这里实现类型转换的逻辑
        // 将 BasicDBObject 转换为 OAuth2Authentication 对象
        // 返回转换后的对象
    }
}

import org.springframework.context.annotation.Configuration;
import org.springframework.core.convert.converter.ConverterRegistry;

@Configuration
public class ConversionConfig implements ConverterRegistry {

    @Override
    public void addConverter(Converter<?, ?> converter) {
        // 注册自定义的转换器
        if (converter instanceof BasicDBObjectToOAuth2AuthenticationConverter) {
            addConverter(converter);
        }
    }
}