Feign inputstream response. Confused about how to achieve that? Tried but failed.

Feign inputstream response whats the proper way to Jul 15, 2020 · 平时使用Feign做微服开发调用客户端时，几乎都是普通接口调用，返回一些JSON数据，今天刚好要进行Feign客户端(服务消费者)调用服务提供者的文件下载接口，记录一下！废话不多说，直接上代码： 首先是文件下载服务提供者的主要代码： import org. IOExcept So I have build custom feign client which works like a charm. java HystrixBuilderTest. * Nov 8, 2022 · 通常我会关闭 InputStream 但因为这个简短而简单的代码我无法在 return 或调用 body 之前关闭流。 当我运行 lsof （代码在 Linux 上运行）时，我可以看到数千个文件以读取模式打开。 Feb 26, 2025 · Learn how to use Feign to make POST API requests with form-url-encoded data in the request body. You may check out the related API usage on the sidebar. SpringEncoder. body (). 7k次，点赞17次，收藏17次。本文介绍了如何在SpringBoot项目中通过Feign接口间接获取文件，处理跨服务调用中的文件下载问题，包括引入相关jar、feign接口定义、文件服务实现以及对外服务的调用和响应头设置。 406 Not Acceptable The resource identified by the request is only capable of generating response entities which have content characteristics not acceptable according to the accept headers sent in the request. The client calls the test-app and then it calls to the translator and Nov 22, 2024 · java 解析feign返回的结果，#Java解析Feign返回的结果在微服务架构中，服务间通信通常是使用HTTP协议进行的，而JavaFeign是一种用于简化HTTP调用的声明性Web服务客户端。 The following examples show how to use feign. Example Let’s declare a “GET /dogs” method in your Spring @Controller: Aug 16, 2018 · feign. So getResourceAsStream(name) could not find resource /resources/images/i. DecodeException. MAX_VALUE. When I am fetching content using Feign clientI get following error: Servlet. Need to integrate the module feign-form to achieve . Prerequisite Nov 28, 2018 · I use a ErrorDecoder to return the right exception rather than a 500 status code. RestClientException: Could not extract response: no suitable HttpMessageConverter found for response type Causes Using an incorrect return type in the FeignClient interface. Response接收接口2的返回，把文件流写入到接口1的HttpServletResponse中。 代码如下 接口1： biReportService代码： 接口2代码： z 重点提醒！ ！！！！ 接口1中获取inputstream的代码不需要DeBug运行，会报错java. Dec 8, 2024 · java feign服务端 返回 InputStream，项目场景：政务管理系统，采用spring-cloud微服务架构，模块间采用feign进行互相调用，在其他模块调用用户管理模块查询用户信息时候，出现如下问题。 Jan 4, 2017 · This works really good, but i cannot read from this input stream, because the stream is closed by SynchronousMethodHandler. Problem is when I get response and copying to log then input stream is closed. Mar 25, 2020 · 本文介绍了如何使用Spring Cloud Feign实现文件上传和下载功能，并提供了详细的代码示例和操作步骤。 × Latest version of io. Response 做返回，调用方解析Response，写入自己响应流中。show code调用方 Aug 2, 2023 · 下载 feign. Response to contain ByteArrayBody or InputStreamBody? #633 Mar 21, 2024 · 1. Could not write JSON: getOutputStream () has already been called for this response; nested exception is com. 0 package-list path (used for javadoc generation -link option) Apr 11, 2019 · How I can log the payload of Feign client request, response and URL. After seeing this suggestion,i used feign-reactor-wrappers. security. FirewalledResponse ["response"]->org. Instead of manually writing boilerplate code for handling response or error, Feign allows us to define custom handlers and register those with Fiegn builder. web. each Feign client is composed of a set of customizable components. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. Using Feign independently Adding module dependencies. So, your request accept header is application/json and your controller is not able to return that. IOException: stream is closed。 Apr 22, 2024 · I encountered an Out of Memory (OOM) error when using the response as a receiver while attempting to download a 6GB file. length in bytes, if known. Jan 16, 2020 · Feign client: import feign. May 1, 2020 · I have a micro-services SpringBoot app in which i am having a hard time extracting the message of a FeignException from the feign client. MrR is right, I was asking specifically for spring. May 10, 2018 · You can't expect to be able to read through the same input stream 2x, so you may need to cache the data and return the extended response with an extended body using the copied data in a new input stream. Feign is a powerful tool for micro-service developers, and it supports ErrorDecoder and FallbackFactory for exception handling. Jul 19, 2022 · The default client uses a plain InputStream so it processes GZIP itself. java HystrixInvocationHandler. This not only reduces the amount of code we need to write but also improves readability and maintainability. client. There is an endpoint which can be generalized by parameterizing the path. cloud. For example: HC5 has the special feature switcher disableContentCompression() but by default this feature is on. Feign Client Exception: Get Response Body Feign is a popular open-source library for building RESTful APIs in Java. body(). codec. openfeign:feign-core Current version 9. EncodeException: Could not write request: no suitable HttpMessageConverter found for request type [java. java SetterFactoryTest. 1 to 13. databind. Let’s see the previous example, a translator and a test application. headers(). I can see that it is inside the FeignException Jan 26, 2024 · NPE in FeignResponseAdapter in case Content-Length header is not provided and response status is not 1XX, NO_CONTENT and NOT_MODIFIED #972 Jul 16, 2020 · So, input stream of the response body is read and closed there and cannot be read again later. The SynchronousMethodHandler close the response body at executeAndDecode Jul 19, 2019 · When user expect Object with the body of response feign shouldn't return null because this leads to NullPointerException and failure. This happens when the correct HTTPMessageConverter can not be found to satisfy the × Latest version of io. Response作为返回类型，并提供了详细的代码示例。 Apr 30, 2024 · 文章浏览阅读3. #971 OkHttpClient supports SSE, Maybe feign could also add support for SSE or some wrappers. asInputStream () ，则会出现 stream is close 的问题。 这几天这个问题本地一直复现，且一直未能真正解决。 The following examples show how to use feign. asInputStream(); You should check if response is 200 Feign makes writing java http clients easier. It has pluggable annotation support including Feign annotations and JAX-RS annotations. Mar 21, 2025 · 异常处理 服务端需关闭 InputStream 和 OutputStream 防止资源泄漏 78。 客户端需处理 IOException 和空响应体，避免因网络问题导致流程中断 58。 性能优化 大文件下载时建议分块传输（Chunked Encoding），避免内存溢出 6。 使用 BufferedInputStream 和 BufferedOutputStream 提升读写效率 8。 Jul 10, 2018 · I am using Open Feign and Hateos in my Microservice Architecture. It only closes underlying InputStream in the next line. If you can control the server response, modify it to set the Content-type to application/xml, text/xml, or something matching application/*+xml. 后来在网上找到了原因:feign Response只能读一次问题 和 feign response 返回值拦截_社区之星的专栏-CSDN博客_feign response所以我在我 Sep 22, 2022 · 文章浏览阅读4. Feign client exception get response body 1 on Google OpenFeign响应统一解析：从响应（统一封装类型Result）中解析出核心数据（data字段）作为FeignClient接口返回值：自定义解码器（Decoder） 问题： 当使用feign远程调用服务提供方的方法，而方法中带有HttpServletResponse参数时，会报以下错误，导致response无法传递： java. Now I’ll show you how to customize each request sent via Feign clients, like adding headers to all of them without the need to explicitly define them using Feign interceptors. In this case all data is moved around in encrypted string so it is needed to be decrypted before say GsonDecoder can access and decode the json. Jan 12, 2022 · Provider 服务提供方接口返回流文件 Consumer 消费者接受方式为fegn. 5版本之后的对应OpenFeign 10. Feign makes writing java http clients easier. The following examples show how to use feign. Body. Response; @FeignClient(value = "some-service") public interface Client{ @RequestMapping(method = RequestMethod. Is there a way to retrieve the original message inside the decoder. The traditional way of writing is very inelegant, so today we introduce you to a more elegant way. body()中的流是关闭的，所以当我尝试读取流并转换为字符串时，它抛出java. java feign httpclient ApacheHttpClient. Response Apr 13, 2015 · Does feign support streaming as opposed to byte[] in memory? Saw a former co-worker ask on SO. I already mocked the header of this response but unable to mock the body. can anybody help please. Apr 1, 2022 · Learn how to invoke a SOAP web service using Feign. Unfortunately, it didn't work out well. java test java feign httpclient ApacheHttpClientTest. 5版本之前的对应OpenFeign9. But based on the path I can get a different type of response. java:188) Jun 10, 2019 · How can I send file in Feign as byte array? @RequestLine ("POST /api/files/ {num}/push") @Headers ( {"Content-Type: application/zip"}) void pushFile (@Param ("num Feign远程调用接收文件流，代码先锋网，一个为软件开发程序员提供代码片段和技术文章聚合的网站。 May 25, 2017 · Exception in thread "main" org. But your response could also be used in a spring environment. 1k次。本文介绍如何使用Feign客户端实现跨微服务的SFTP文件上传功能，详细讲解了Feign客户端接口定义、Multipart文件传输配置及SFTP微服务端的实现。 Oct 14, 2019 · Spring Cloud Feign接口返回流 身无彩凤双飞翼，心有灵犀一点通。 服务提供者 @GetMapping("/{id}") public void queryJobInfoLogDetail(@PathVariable("id") Long id, HttpServletResponse response) { File file = new File("xxxxx"); InputStream fileInputStream = new FileInputStream(file); OutputStream outStream; try { Nov 17, 2023 · 场景：前端调用的接口写在portal层，现在有一个下载的场景需要portal层通过feign调用Neams模块后端服务。 解决方法：使用feign原生的Response做返回，再将feign的Response转换成HttpServletResponse (2)Feign的Client接口 要获取到Feign的响应对象，只需要将返回类型设置为Response就可以了 注意这里的包是feign. Sep 6, 2023 · 相关问题答案，如果想了解更多关于自定义feign的返回拦截器，遭遇返回流只能读取一次的情况，这个如何处理？ java、spring cloud 技术问题等相关问答，请访问CSDN问答。 Jun 13, 2019 · I am downloading files with a GET request. 1. Response，下载： public ModelAndView getChecklistTree(HttpServletResponse servletResponse) { ModelAndView mv = Mar 9, 2018 · In my case I observed Spring Feign client returns this exception when you specified the return type as a specific model/entity class and that entity is not found. Sep 7, 2022 · i am using spring boot to call a openfeign client and from the Response of that feign i need to extract some header values. 0a0ff3f When using IntellJ the default behavior while debugging is to call any toString methods that have Apr 16, 2024 · springcloud feign 接口返回inputstream springcloud中feign原理，文章目录前言一、理论部分1、Feign原理简述2、FeignClient注解的一些属性3、Feign配置底层请求client4、Feign开启GZIP压缩5、FeignClient上的配置方式6、FeignClient开启日志7、Feign的GET的多参数传递二、实战部分1、创建 7. Jul 23, 2025 · Learn how to use FeignClient in Spring Boot for making REST API calls effectively and efficiently. slf4j. In this short tutorial, we’ll see how to set the body, status, and headers of an HTTP response using ResponseEntity. May 4, 2021 · ResponseEntity accepts a generic argument <T>. Example: Status: 200 Body: { "code":404, "message":& Jan 2, 2024 · 文章浏览阅读4. springframework I'm trying to accomplish a multipart file upload using feign, but I can't seem to find a good example of it anywhere. Jan 8, 2024 · OkHttp is an HTTP client for Java and Android with features like transparent handling of GZIP, response caching, and recovery from network problems. class); Now to mock this I am using Mockito. gif and it returned null. Solutions Ensure Dec 9, 2024 · Hi We use feign-java11 and feign-gson dependencies in our project and after we migrated from 13. So these cliens just wrappers and main processing is hidden inside the libraries. github. Dec 8, 2024 · java feign服务端 返回 InputStream，项目场景：政务管理系统，采用spring-cloud微服务架构，模块间采用feign进行互相调用，在其他模块调用用户管理模块查询用户信息时候，出现如下问题。 Feb 26, 2025 · Feign is a pluggable and declarative web service client that makes writing web service clients easier. Apr 27, 2025 · 二、Feign 消息转换机制原理 Feign 的消息转换依赖 Spring 的 HttpMessageConverter 体系，核心流程如下： 接收响应：Feign 从服务端获取响应数据及 Content-Type 头。 匹配转换器：遍历注册的 HttpMessageConverter，寻找支持目标类型和内容类型的转换器。. Not properly managing the input stream, which can lead to the stream being closed prematurely before reading the response. asReader(), MyDefinition. responseMock. It should throw FeignException instead: interface People { @Req Aug 22, 2022 · 本文介绍了Feign调用接收response返回的方法和示例，帮助开发者更好地理解和使用Feign进行服务调用。 Apr 8, 2020 · The toString() on Response. Dec 10, 2014 · At work we use Netflix's Feign Client to help with requests between services. response Receive Response. Upon investigation, I discovered that Feign doesn't seem to support downloading large files as inputstream. 2w次，点赞4次，收藏11次。本文介绍了如何在Java应用中使用Feign客户端进行RESTful API调用。示例展示了如何定义Feign接口，设置请求头，并从响应中获取body内容。同时，文章提到了如何处理返回的token信息，可用于统一用户身份验证。 Dec 18, 2018 · A quick introduction to the Feign, a declarative HTTP client. You can either remove response from logging or copy its input stream (via apache IOUtils or smth similar) and then work with its duplicate. Response, which doesn't include some of these convenience functions out of the box. True if asInputStream() and asReader() can be called more than once. Logger copies Response in method logAndRebufferResponse, it makes new instance of Response. encodeWithMessageConverter (SpringEncoder. HttpMessageConverter HttpMessageConverter is a message Jun 17, 2019 · Welcome readers, in this tutorial, we will explore an interesting Spring Cloud component known as Netflix Feign Client to implement a declarative REST client. firewall. Use-case A common use-case for To include Feign in your project use the starter with group org. You should check the response for the another service which you are calling and see what response it returns in case the entity is not found, or in case an exception is thrown. Apr 15, 2024 · 文章浏览阅读7. It makes it easy to create clients for remote services by providing a simple, declarative API. Aug 1, 2018 · Learn how to produce asynchronous and streaming data responses using Spring MVC 5 and consume them with a simple AJAX client. Learn how to get the response body of a feign client exception with this step-by-step guide. Learn how to write declarative REST client using Feign and Spring Boot. 5. Aug 28, 2022 · These feign clients are wrapper around a delegate client. But how could I send big dat Sep 5, 2025 · 文章浏览阅读9. Decoder - Something needs to convert the feign Response to the actual type of the feign method's return type. So Try to create a class to define your reseponse (the one with the "applicationName" attribute), let`s call it MyResponse, and on your feign client define the return type with: ResponseEntity<MyResponse>. 4 tip: 文件的上传下载服务端代码, 和一般的上传下载一样： OpenFeign 文件上传需要配置Encoder, 我这里用的是feign-form; 也可以选择其他的; feign-form 版本对应 3. So in later stage of decoding the response and converting to ResponseEntity, it throws the exception saying “stream is closed”. Other clients are based on third-party libraries who have OOB GZIP processing. cloud and artifact id spring-cloud-starter-openfeign. See May 7, 2016 · If i change the returned response status to a 400 for example the error resource contains the response. In spite of these great features, OkHttp doesn’t have a built-in encoder/decoder for JSON, XML, and other content types. So I am trying to u Mar 17, 2024 · Using Spring, we usually have many ways to achieve the same goal, including fine-tuning HTTP responses. support. Retrieving Message From ErrorDecoder Jan 26, 2018 · Question: What might cause the feign. GET, value ="/download") Response downloadFile(); } Usage of Feign Client: final Response response = client. However, I'm confused about its apparent lack of ability to stream data, especially given Netflix's well known business Dec 23, 2024 · Java文件下载功能实现，通过Feign客户端调用服务端接口获取文件流，使用InputStream和OutputStream实现高效文件传输，支持大文件下载，包含异常处理机制。适用于微服务架构下的文件下载场景。 Feb 15, 2022 · Feign framework does not directly support file uploads (Multipart/form-data). openfeign. 9k次，点赞5次，收藏8次。本文介绍了解决Feign远程调用时遇到的response无法传递的问题，通过使用Feign原生的feign. 1k次。本文详细介绍了如何使用Feign在服务间调用资源服务器生成的二维码图片资源。通过对比不同输出方式，最终采用ServletOutputStream成功实现跨服务图片资源的获取与展示，同时提供了BufferedImage转换为InputStream的方法及SpringBoot返回二进制图片的完整流程。 Apr 30, 2024 · 文章浏览阅读3. REST Client is the REST Client implementation compatible with Quarkus REST (formerly RESTEasy Reactive). 2. Overview In this tutorial, we’ll demonstrate how to handle exceptions in Feign. Note that the InputStream should be lazily retrieved by the Resource handle in order to reliably close it after it has been copied to the response. This is expected behavior when using Feign. And it excels at that! The only lacking feature is to retrieve information other than the RequestBody from a response (mainly headers), which makes me resort to feign. Spring Cloud adds support for Spring MVC annotations and for using the same HttpMessageConverters used Feb 8, 2017 · In fact, the server might be unable to deliver the response in whatever content-type, some piece of configuration is missing in your project. InputStreamBody causes the underlying inputstream to be closed. See Jun 30, 2020 · I have to up/download huge files, bigger then fits into memory. In your feign interface make your method return ByteArrayResource to consume a stream Learn how to obtain an InputStream via Spring Feign with expert insights, best practices, and code samples for efficient API communication. Instead of the expected byte array or InputStream, an incompatible type is specified. Mar 20, 2024 · 在这个教程中，我们将展示如何在 Feign 中处理异常。 Feign是微服务开发者强大的工具，它支持**错误解码器 (ErrorDecoder) 和 回退工厂 (FallbackFactory)**来处理异常。 Oct 14, 2025 · 文章浏览阅读1. For the download I could use the Response object as it gives me the (hopefully) unbuffered input stream. 2. Nov 15, 2024 · feign Response获取文件流，Feign引言初学时，我们是使用拼接字符串的方式构造URL的，该URL只有一个参数。 然而在现实中，URL中往往有多个参数。 What is feign Feign is a declarative web service client. This is an integer as most implementations cannot do bodies greater than 2GB. fasterxml. just help me wheather we can d Feb 26, 2025 · In this tutorial, we’ll demonstrate how to upload a file using Open Feign. Null if unknown or greater than Integer. 0 package-list path (used for javadoc generation -link option) More Recommendation Feign Client Download file at the backend Feign Client interface receives feign. It makes writing web service clients easier. body(); final InputStream inputStream = body. However, feign clients can sometimes throw exceptions when trying to get the response body of a request. Introduction Spring Boot is a module that provides rapid application development feature to the spring framework including auto-configuration, standalone-code, and production-ready code It creates applications that are packaged as jar Nov 26, 2022 · 所以我们从 Response 中拿到对应的JSON 字符串，然后通过反序列化拿到 CECResponse 实例，接着做对应的异常判断（这里我的代码暂时未实现），然后再做数据的解码，拿到真正的业务数据的JSON字符串，最后通过 OpenFeign 提供的 toBuilder 方法重新构造一个新的 Response Feign makes writing java http clients easier. put("xxxxxx", headerValues); Aug 8, 2024 · The README just tells us that it is possible, and gives us an example of a prebuilt response interceptor (side note, the RedirectionInterceptor that the README says Feign includes is not actually included with the package -- auto-import does not resolve it, and I'm unable to find it anywhere in version 11. However, we can implement these with the help of XML/JSON binding libraries, or we can use high-level libraries like Feign Mar 22, 2013 · See javadoc, it says : getResourceAsStream(name) method returns a InputStream object or null if no resource with this name is found. In addition, to Feign annotations, it also supports JAX-RS, and it supports encoders and decoders to provide more customization. You are defining a ResponseEntity without generic data type. Jun 14, 2016 · I'm using feign to abstract requests, handle errors, decode responses and circuit breaking (with HystrixFeign) with minimal code. java HystrixFeign. IllegalStateException: getOutputStream() has already been called for this response I am getting feign exception because the service response contains an additional )}]', in the starting I have asked the service team to remove those invalid characters but they said it is not possible to remove it since it was been placed purposely for some other requirement and have asked me to handle it from our end. You should use ByteArrayResource as the response type in your feign method. Nov 12, 2021 · This article is going to cover a very specific piece with Spring Cloud OpenFeign, so if you don’t have any xp, I suggest you read my other interesting articles. java HystrixDelegatingContract. I essentially want the HTTP request to turn out similar to this: May 18, 2023 · The feign wrappers are not fully reactive, they wrap the synchronous call on a new scheduler. Includes examples in Java and Spring Boot. My Spring REST controller which uses FeignClient for consuming another Image/Blob storage microservice fails with error 'stream is closed'. I have tried the solution here, but when this line String Oct 14, 2025 · 文章浏览阅读4. Body body = response. downloadFile(); final Response. feign Response只能读一次问题 和 feign response 返回值拦截，代码先锋网，一个为软件开发程序员提供代码片段和技术文章聚合的网站。 Dec 28, 2020 · 思路：使用Feign. fromJson(Response. 10) Oct 14, 2023 · Handling Responses Feign also provides a declarative approach to API integration. Contribute to OpenFeign/feign development by creating an account on GitHub. This test uses WireMock and verifies that if malformed response is sent to the client then Retrya Dec 2, 2024 · 文章浏览阅读3. Logger; import o Sep 23, 2025 · 文章浏览阅读6. body() is closed, so when i try to read the stream and trans to string, it throw java. These components are Decoder: process the incoming server response to transform it into our desired object, It uses a ResponseEntityDecoder. Mar 27, 2018 · I am writing a REST client using Feign. To use Feign create an interface and annotate it. Feign for downloading fileI am trying to find a simple way to use Feign to download a csv file (retaining This guide explains how to use the REST Client in order to interact with REST APIs. For example ApacheHttpClient wraps a httpcomponents httpclient and converts the response to feign response. A ResponseEntity<Resource> can be returned for file content, copying the InputStream content of the provided resource to the response OutputStream. lang. IOException: stream is closed。这真的很困惑，因为在解码器之前，我没有做任何事情来提前关闭流。public class FeignClientErrorDecoder implements ErrorDecod Jan 9, 2020 · 1. When requesting the consumed service directly via the browser i can see the response body with a response status of 404. Body, but it doesn't close original Response. 3. Oct 10, 2018 · I want to transport InputStreamResource with feign api like this: Oct 14, 2025 · 本文介绍使用FeignClient实现远程文件流获取的方法，通过定义接口接收Response对象，并将其转换为InputStream供进一步处理使用。 It is the responsibility of the caller to close the stream. Maven Dependency To start, let’s create a Spring Boot project by including the spring-cloud-starter-openfeign. May 11, 2023 · 文章浏览阅读2. Read body data from HttpServletRequest and encapsulate it into some kind of data structure; write data to HttpServletResponse and respond. Jul 24, 2020 · I have an API which will return a failure in form of custom response message, while still sending a Http 200 response. See the Spring Cloud Project page for details on setting up your build system with the current Spring Cloud Release Train. In this one, I’m going to show you a quick and easy way on how the request parameter transformation can be adjusted with Spring Cloud OpenFeign, similarly how the regular Feign Param expanders work. Jan 17, 2025 · And I think there should be some discussion about supporting InputStream as a body parameter type, and possibly OutputStream as a client method response parameter type. Feign is a powerful tool for microservice developers to communicate via REST API with other microservices in a declarative manner. java test java feign hystrix FallbackFactoryTest. jackson. Some of them are quite large, so I want to get them as a stream and read the bytes in chunks as I can process them, never reading the whole file in memor The implementation for all of the above returns false, including Jaxb2RootElementHttpMessageConverter. ByteArrayOutputStream] at org. Body InputStream is saved as file Feb 13, 2022 · Recently, many interactions have to deal with the native HttpServletRequest and HttpServletResponse. Feb 19, 2018 · Recently I wrote an article how to explicitly pass headers via Feign clients. java main java Feb 21, 2025 · 解决方案是使用Feign的Response对象，并将其转换为HttpServletResponse。 在服务提供方，正常处理下载请求；在Feign调用方，获取Feign的Response，然后通过转换方法将Feign的Response转化为HttpServletResponse，设置响应头并复制输入流到输出流，从而实现文件的正确下载。 I'm looking to find a way to retrieve the original response caused by an Exception that has been thrown inside a microservice called as a RemoteService through FeignClient. Decoders are that instruments. Nov 30, 2019 · The response interceptor just would need to happen before decoder. Issues with the server configuration or response headers that affect the way the image is transmitted. 3k次，点赞2次，收藏12次。本文详细介绍了如何使用Feign调用返回Stream，并通过示例展示了如何将得到的Stream用于下载、写入页面展示图片等操作。文章还提供了具体的代码实现，包括服务提供者流接口、远程调用接口及下载文件接口的实现方式。 Jul 4, 2025 · 前端请求到B服务，B服务使用feign去调用A服务是输出流，这个时候A服务就需要将输出流响应到feign接口中的response上，B服务再拿到feign接口的response，在B服务这里将response以流的方式输到浏览器 ； feign在这里将相当于一个中间人先拿到输出流中转一下。 Dec 7, 2021 · easy to read and maintain, Feign abstracts the implementation of how requests are made, and you just need to care about configuration. Why is the response body of a feign request empty when the service returns 404? Is there a way to get the response body? Jul 19, 2022 · The default client uses a plain InputStream so it processes GZIP itself. do I have to Implement an Interceptor? Because my requirement is logging the request and response on a special table on the data May 11, 2024 · How to configure HttpMessageConverters for a REST API with Spring, and how to use these converters with the RestTemplate. JsonMappingException: getOutputStream () has already been called for this response (through reference chain: org. Feign also supports pluggable encoders and decoders. Aug 28, 2024 · When feign. @kdavisk6 Thank you for your response. io. Confused about how to achieve that? Tried but failed. * , 3. 1 How to Include Feign To include Feign in your project use the starter with group org. java SetterFactory. how can i do that. Since no HttpMessageConverter can read your HTTP response, processing fails with an exception. 7k次。该代码片段展示了如何使用SpringBoot的@RestController注解创建一个用于获取文件流的API接口，通过编辑器id参数获取Excel文件。同时，它演示了FeignClient如何调用这个接口，将响应转换为InputStream进行处理。NioUtil工具类用于复制文件流到HTTP响应。 Apr 28, 2020 · When i try to implements ErrorDecoder to decode the feign exception, i found the stream in response. java main java feign hystrix FallbackFactory. This way feign will know how to desserialize your response body. 5 one of our tests started failing. springframework. This can be a frustrating problem, as it can be difficult to know how to Aug 31, 2020 · Hi @PavelDudin, Thank you for your response. Response 对象，您可以通过该对象来获取远程服务的响应信息。 服务端 (changing File by hand to byte [] doens't help as feign/jackson is expecting in this case base64 coded response, but the service returns raw content and the call fails with jackson parsing error. service() for servlet [dispatcherServlet] in context w When feign. 1k次。一次项目中调用API的时候没有留意,没有发现API返回的是Response流,作为中间API接口封装的服务,直接将外部返回回来的流传递给了消费者服务,导致出了问题. 1k次。文章展示了如何通过Feign在微服务之间调用接口，返回stream流，以实现文件下载功能。服务端控制器和服务层处理文件流的获取和发送，而客户端使用Feign接口接收流并转发到响应，完成文件内容的传输。 MyDefinition databricksResponseBody = null; ResponseBody = gson. 后来在网上找到了原因:feign Response只能读一次问题 和 feign response 返回值拦截_社区之星的专栏-CSDN博客_feign response所以我在我 Apr 27, 2020 · 当我尝试实现ErrorDecoder来解码假异常时，我发现response. 2k次，点赞6次，收藏17次。我们在做响应流导出的时候，但是导出功能的提供方为下游服务，我进行feign调用。提供方正常代码编写这么写会报错的。调用方的HttpServletResponse 无法传递我们这里使用Feign原生的 feign. In the microservice &quo Oct 18, 2022 · 之前记录了，在使用feign 的response 时候，使用钉钉打印信息时候，如果使用了 response. Response 是 Feign 库中的一个类，用于表示 HTTP 响应。它提供了一些方法来获取响应的状态码、头部信息和响应体等内容。 在使用 Feign 进行服务间通信时，调用远程接口的方法可能会返回一个 feign. nyleymo iqykf sgxlp habie uil otmma wfiw kkxpphl plyar ftyog sxmhz iggwzu fslsv iihh swjcd