如何将 Spring Pageable 传递给 FeignClient [英] how to pass Spring Pageable to FeignClient

问题描述

正如我在本期中所写:https://github.com/spring-cloud/spring-cloud-openfeign/issues/375在这个问题中:Spring 数据 Pageable 不适用于 feign 客户端

as I wrote in this issue: https://github.com/spring-cloud/spring-cloud-openfeign/issues/375 and in this SO question: Spring data Pageable does not work with feign client

在包含@requestbody 元素的 POST 请求中发送 Pageable 对象时遇到一些问题.

I have some problems sending a Pageable object in a POST request containing a @requestbody element.

首先，我尝试发送嵌入在我的 RequestBody 中的 Pageable，因为它是在使用 springdoc-openapi-webmvc-core 时作为示例生成的.

First I tried sending the Pageable embedded in my RequestBody since it was generated as example when using springdoc-openapi-webmvc-core.

示例:

@PostMapping("/search") public Page<HelloDto> searchHellos(@RequestBody HelloDto example, Pageable pageable)

{ "example": { "message": "string" }, "pageable": { "pageNumber": 0, "pageSize": 50, "offset": 10, "sort": { "sorted": false, }, "paged": true, } }

不，我知道，我也可以通过 Query 参数发送它，它会被解析.将 pageable 提取到 QueryParams 中的注解在 SpringDoc 中称为 org.springdoc.api.annotations.ParameterObject.

No I learned, that I can send it via Query parameter aswell and it will be parsed. The annotation that extracts the pageable into QueryParams is called org.springdoc.api.annotations.ParameterObject in SpringDoc.

@PostMapping("/search") public Page<HelloDto> searchHellos(@RequestBody HelloDto example, @ParameterObject Pageable pageable) { return helloCallerService.callHelloServiceClient(example, pageable); }

当我尝试像这个客户端接口那样通过伪装调用类似的控制器接口时:

When I try to call a similar controller interface via feign like this client interface:

@PostMapping("/search") public Page<HelloDto> searchHellos(@RequestHeader("apiKey") String apiKey, @RequestBody HelloDto example, Pageable pageable);

应用程序不会启动，因为该方法有太多的主体参数".我试图用 @RequestParam 注释 Pageable 但它不会被识别/解析.

The application won't start since the method "has too many body params". I tried to annotate Pageable with @RequestParam but it won't be recognized / parsed.

我的问题是:

我们可以使用自定义 AnnotatedParameterProcessor 例如@ParameterObject 将 ParameterObject 弄平并将其编码为 url 查询参数?

Can we use a custom AnnotatedParameterProcessor for e.g. @ParameterObject that flats out the ParameterObject and encodes it into the url query parameters?

你会怎么做?或者 AnnotatedParameterProcessor 是错误的方式?我可能需要扩展器或任何东西吗?

How would you do that? Or is the AnnotatedParameterProcessor the wrong way? Do I maybe need an expander or anything?

推荐答案

你的问题比 springdoc-openapi 更与 feign 用法相关.使用 org.springframework.cloud.openfeign.SpringQueryMap，解决您的问题.

Your question is more related to feign usage than springdoc-openapi. Using using org.springframework.cloud.openfeign.SpringQueryMap, solves your problem.

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