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学习spring cloud   ，些了一个图片上传的服务，直接用postman 请求这个服务，是没有问题的，

但是在web层（comsumer层？）用feign去调用这个服务，就报错了，，

the request was rejected because no multipart boundary was found，，，

原文地址：

https://github.com/OpenFeign/feign-form

工程中需要依赖这两个东东

<dependencies>
    ...
    <dependency>
        <groupId>io.github.openfeign.form</groupId>
        <artifactId>feign-form</artifactId>
        <version>3.2.2</version>
    </dependency>
    <dependency>
        <groupId>io.github.openfeign.form</groupId>
        <artifactId>feign-form-spring</artifactId>
        <version>3.2.2</version>
    </dependency>
    ...
</dependencies>

@FeignClient(name = "file-upload-service", configuration = FileUploadServiceClient.MultipartSupportConfig.class)
public interface FileUploadServiceClient extends IFileUploadServiceClient {

    public class MultipartSupportConfig {

        @Autowired
        private ObjectFactory<HttpMessageConverters> messageConverters;

        @Bean
        public Encoder feignFormEncoder() {
            return new SpringFormEncoder(new SpringEncoder(messageConverters));
        }
    }
}

@FeignClient(name = "file-upload-service", configuration = FileUploadServiceClient.MultipartSupportConfig.class)
public interface FileUploadServiceClient extends IFileUploadServiceClient {

    public class MultipartSupportConfig {

        @Bean
        public Encoder feignFormEncoder() {
            return new SpringFormEncoder();
        }
    }
}