@SpringBootApplication
@EnableCircuitBreaker
@EnableEurekaClient
@EnableFeignClients
@ComponentScan(excludeFilters = {@ComponentScan.Filter(type = FilterType.ASSIGNABLE_TYPE,value = FeignMultipartSupportConfig.class)})
public class BootstrapApplication {
?
? ?public static void main(String[] args) {
? ? ? SpringApplication.run(BootstrapApplication.class, args);
? ?}
}

@FeignClient(name = "micro-picture", fallbackFactory = MicroPictureFactory.class, configuration = FeignMultipartSupportConfig.class)
public interface MicroPictureClient {
@RequestMapping(value = { "/picture/common/upload/{commonKey}" }, method = RequestMethod.POST, consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
? ?public String upload(@RequestPart("image") MultipartFile image, @PathVariable("commonKey") Long commonKey);
? ?
}

@Configuration
public class FeignMultipartSupportConfig {
? ?@Bean
? ?@Primary
? ?@Scope("prototype")
? ?public Encoder multipartFormEncoder() {
? ? ? return new FeignSpringFormEncoder();
? ?}
? ?@Bean
? ?public feign.Logger.Level multipartLoggerLevel() {
? ? ? return feign.Logger.Level.FULL;
? ?}
}

package com.zhht.config;
import feign.RequestTemplate;
import feign.codec.EncodeException;
import feign.codec.Encoder;
import feign.form.ContentType;
import feign.form.FormEncoder;
import feign.form.MultipartFormContentProcessor;
import feign.form.spring.SpringManyMultipartFilesWriter;
import feign.form.spring.SpringSingleMultipartFileWriter;
import org.springframework.web.multipart.MultipartFile;
import java.lang.reflect.Type;
import java.util.Collections;
import java.util.Map;
public class FeignSpringFormEncoder extends FormEncoder {
? ?
? ?public FeignSpringFormEncoder() {
? ? ? this(new Default());
? ?}
? ?public FeignSpringFormEncoder(Encoder delegate) {
? ? ? super(delegate);
? ? ? MultipartFormContentProcessor processor = (MultipartFormContentProcessor) this
? ? ? ? ? ? .getContentProcessor(ContentType.MULTIPART);
? ? ? processor.addWriter(new SpringSingleMultipartFileWriter());
? ? ? processor.addWriter(new SpringManyMultipartFilesWriter());
? ?}
? ?public void encode(Object object, Type bodyType, RequestTemplate template) throws EncodeException {
? ? ? if (bodyType.equals(MultipartFile.class)) {
? ? ? ? ?MultipartFile file = (MultipartFile) object;
? ? ? ? ?if (file != null) {
? ? ? ? ? ? Map<String, Object> data = Collections.singletonMap("image", object);
? ? ? ? ? ? super.encode(data, MAP_STRING_WILDCARD, template);
? ? ? ? ? ? return;
? ? ? ? ?}
? ? ? } else if (bodyType.equals(MultipartFile[].class)) {
? ? ? ? ?MultipartFile[] file = (MultipartFile[]) object;
? ? ? ? ?if (file != null) {
? ? ? ? ? ? Map<String, Object> data = Collections.singletonMap("imgList", object);
? ? ? ? ? ? super.encode(data, MAP_STRING_WILDCARD, template);
? ? ? ? ? ? return;
? ? ? ? ?}
? ? ? }
? ? ? super.encode(object, bodyType, template);
? ?}
}

? ? ? ? <dependency>
? ? ? ? ? ? <groupId>io.github.openfeign.form</groupId>
? ? ? ? ? ? <artifactId>feign-form</artifactId>
? ? ? ? ? ? <version>3.4.1</version>
? ? ? ? </dependency>
? ? ? ? <dependency>
? ? ? ? ? ? <groupId>io.github.openfeign.form</groupId>
? ? ? ? ? ? <artifactId>feign-form-spring</artifactId>
? ? ? ? ? ? <version>3.4.1</version>
? ? ? ? </dependency>

@Configuration
public class FeignMultipartSupportConfig {
? ? @Bean
? ? public Encoder multipartFormEncoder(ObjectFactory<HttpMessageConverters> messageConverters) {
? ? ? ? return new SpringFormEncoder(new SpringEncoder(messageConverters));
? ? }
}

@FeignClient(value = "****",
? ? ? ? fallbackFactory = UploadClientFallbackFactory.class
? ? ? ?, configuration = FeignMultipartSupportConfig.class
)
public interface UploadClient {
? ? /**
? ? ?* 上傳圖片文件
? ? ?*
? ? ?* @param file
? ? ?* @return
? ? ?*/
? ? @PostMapping(value = "/tbk/feedback/upload",
? ? ? ? ? ? produces = {MediaType.APPLICATION_JSON_UTF8_VALUE},
? ? ? ? ? ? consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
? ? BaseResponse<String> uploadImage(@RequestPart("file") MultipartFile file);
}