如何使用multipart/form-data? [英] How can I use multipart/form-data?

问题描述

我需要实现一个REST端点，该端点可以接收multipart/form-data
我使用
-春季靴
-Kotlin
-Spring MVC

I need to implement a REST-Endpoint, that receives multipart/form-data
I use
- Spring Boot
- Kotlin
- Spring MVC

多部分表单提交，包括以下部分:

A multipart form submit with the following parts:

部署名称-----文本/纯文本
启用重复过滤-----文本/纯文本
仅部署更改的-----文本/纯文本
部署源-----文本/纯文本
租户ID -----文本/纯文本
* ----- application/octet-stream

deployment-name ----- text/plain
enable-duplicate-filtering ----- text/plain
deploy-changed-only ----- text/plain
deployment-source ----- text/plain
tenant-id ----- text/plain
* ----- application/octet-stream

Rest Controller的外观如下:

The Rest Controller looks so:

    @PostMapping("/data/deployment/create")
    fun uploadDmn(@RequestBody() file: Any){

    }

当我收到请求时，出现错误:

When I receive a request, then there is an error:

内容类型'multipart/form-data; boundary = -------------------------- 914124725006223485188585; charset = UTF-8'不支持]

Content type 'multipart/form-data;boundary=--------------------------914124725006223485188585;charset=UTF-8' not supported]

如果我使用"MultipartFile"而不是任何文件，则文件为NULL.

If I use "MultipartFile" instead of any, then is file NULL.

    @PostMapping("/data/deployment/create")
    fun uploadDmn(@RequestBody() file: MultipartFile){

    }

请求示例:

--28319d96a8c54b529aa9159ad75edef9
Content-Disposition: form-data; name="deployment-name"

aName
--28319d96a8c54b529aa9159ad75edef9
Content-Disposition: form-data; name="enable-duplicate-filtering"

true
--28319d96a8c54b529aa9159ad75edef9
Content-Disposition: form-data; name="deployment-source"

process application
--28319d96a8c54b529aa9159ad75edef9
Content-Disposition: form-data; name="data"; filename="test.bpmn"

<?xml version="1.0" encoding="UTF-8"?>
<bpmn2:definitions ...>
  <!-- BPMN 2.0 XML omitted -->
</bpmn2:definitions>
--28319d96a8c54b529aa9159ad75edef9--

任何人都可以帮忙吗?

推荐答案

Retrofit在 FORM ENCODED AND MULTIPART

Retrofit has documentation on FORM ENCODED AND MULTIPART

要点是用@Multipart注释功能并将文件注释为@Part

The gist is to annotate the function with @Multipart and annotate your file as @Part

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