如何使用Jackson编码Feign GET请求参数？

<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.12.5</version>
</dependency>

import com.fasterxml.jackson.databind.ObjectMapper;
import feign.RequestTemplate;
import feign.codec.Encoder;
import feign.form.spring.SpringFormEncoder;
import org.springframework.beans.factory.ObjectFactory;
import org.springframework.boot.autoconfigure.http.HttpMessageConverters;
import org.springframework.cloud.openfeign.support.SpringEncoder;

public class JacksonEncoder implements Encoder {

    private final SpringFormEncoder springFormEncoder;
    private final ObjectMapper objectMapper;

    public JacksonEncoder(ObjectFactory<HttpMessageConverters> messageConverters) {
        this.springFormEncoder = new SpringFormEncoder(new SpringEncoder(messageConverters));
        this.objectMapper = new ObjectMapper();
    }

    @Override
    public void encode(Object object, Type bodyType, RequestTemplate template) throws EncodeException {
        if (bodyType.equals(MultiValueMap.class)) {
            springFormEncoder.encode(object, bodyType, template);
        } else {
            try {
                String json = objectMapper.writeValueAsString(object);
                template.body(json);
            } catch (JsonProcessingException e) {
                throw new EncodeException("Failed to encode object", e);
            }
        }
    }
}

@FeignClient(name = "example", configuration = ExampleClient.Configuration.class)
public interface ExampleClient {

    @GetMapping("/example")
    void getExample(@RequestParam("param") ExampleParam param);

    class Configuration {
        @Bean
        public Encoder feignEncoder(ObjectFactory<HttpMessageConverters> messageConverters) {
            return new JacksonEncoder(messageConverters);
        }
    }
}

@Autowired
private ExampleClient exampleClient;

public void sendGetRequest() {
    ExampleParam param = new ExampleParam();
    // 设置请求参数

    exampleClient.getExample(param);
}