使用假装的表单中的多部分文件

Question

我在使用假装上传图像时遇到问题。我有多个使用弹簧云的服务。我的依赖项版本如下

spring boot - 1.4.3.RELEASE
spring-cloud-starter-feign - 1.1.3.RELEASE
io.github.openfeign.form - 2.2.1
io.github.openfeign.form - 2.2.1

在我的表格中，我有下面带有多部分文件的字段

public class MyFrom {
    private String field1;
    private String field2;
    private MultipartFile image;
    //getters and setters
}

并在我的假装客户端中传递它

@RequestMapping(value = { "/api/some-task},
        method = RequestMethod.POST,
        consumes = {"multipart/form-data"})
ResponseEntity<MyForm> addPromoTask(@RequestBody MyForm request);

我已经在我的代码中添加了一个 SpringFormEncoder，但我已经检查了编码器的代码，但它似乎不支持 Multipartfile 包含在 RequestBody 中。

@FeignClient(value = "some-feign",
    fallback = SomeTaskClient.SomeTaskClienttFallback.class,
    configuration = SomeTaskClient.CoreFeignConfiguration.class)
public interface SomeTaskClient extends SomeTaskApi {
    @Configuration
    class CoreFeignConfiguration {
        @Bean
        @Primary
        @Scope(SCOPE_PROTOTYPE)
        Encoder feignFormEncoder() {
            return new SpringFormEncoder();
        }
    }
}

我已经看到您可以在下面的链接中传递多个@RequestPart，但我似乎无法使其工作。我收到一个错误，它说我正在传递多个正文参数。

https://github.com/bilak/spring-multipart-feign-poc/blob/master/src/main/java/com/github/bilak/poc/ContentClient.java

Answer 1

1.您需要升级pom.xml文件中假装形式的依赖版本

<dependency>
   <groupId>io.github.openfeign.form</groupId>
   <artifactId>feign-form</artifactId>
   <version>3.0.0</version>
</dependency>
<dependency>
   <groupId>io.github.openfeign.form</groupId>
   <artifactId>feign-form-spring</artifactId>
   <version>3.0.0</version>
</dependency>

2. 按如下方式修改配置客户端

@FeignClient(name = "service1", configuration = {MultipartSupportConfig.class})
public interface FileUploadServiceClient {
    @RequestMapping(value = "/upload", method = RequestMethod.POST, consumes = MULTIPART_FORM_DATA_VALUE)
    public @ResponseBody String handleFileUpload(
                            @RequestPart(value = "file", required = true) MultipartFile file,
                            @RequestParam(value = "name") String name) throws IOException;
    @Configuration
    public class MultipartSupportConfig {
        @Autowired
        private ObjectFactory<HttpMessageConverters> messageConverters;
        @Bean
        @Primary
        @Scope("prototype")
        public Encoder feignEncoder() {
            return new SpringFormEncoder(new SpringEncoder(messageConverters));
        }
    }
}

问题参考https://github.com/OpenFeign/feign-form/issues/19

Answer 2

也许你应该在映射注释中使用"消耗"，这对我适用于 Spring boot 2 和 spring-cloud-starter-openfeign：

   @PostMapping(value="/upload", consumes = "multipart/form-data" )
   QtiPackageBasicInfo upload(@RequestPart("package") MultipartFile package);