如何在多部分改装请求中发送对象数组 [英] How to send array of objects in retrofit multipart request

问题描述

我想发送包含多部分数据的数组对象.我尝试了很多方法，但是没有用.我的贡献者参数问题.服务器说. contributor.0.id是必需的&列表中的其余项目是必需的contributor.0.role，依此类推. Server读取到有一个供稿者数组，并且有项目，但是由于某种原因他无法提取它.

I want to send array objects with multipart data. I tried many ways but it is not working. My issue with the contributor parameter. Server says. contributor.0.id is required & contributor.0.role is required and so on for remaining items in the list. Server reads that there is a contributor array and it has items but he can't extract it for some reason.

请帮忙吗?

@Multipart
@POST("project/create")
fun createProject(
    @Header("Authorization") token: String,
    @Part("title") title: String,
    @Part img: MultipartBody.Part,
    @Part("release_date") releaseDate: String,
    @Part("contributors[]") contributors: MutableList<Contributor>
): Single<Response<String>>

班级贡献者

class Contributor : Serializable{

@SerializedName("id")
@Expose
var id: Int = 0

@SerializedName("role")
@Expose
var role: String = ""

}

推荐答案

这是为我工作的唯一方法.

Here is the only way worked for me.

首先创建了Hashmap，并以此方式映射了我的数据

First Created Hashmap and mapped my data on this way

val contributorsMap: HashMap<String, String> = HashMap()

    for((index, contributor) in contributorList.withIndex()){

        contributorsMap["contributors[${index}][id]"] = "${contributor.id}"
        contributorsMap["contributors[${index}][role]"] = contributor.role

    }

然后将我的函数参数更新为@PartMap

Then updated my function parameter to @PartMap instead

@Multipart
@POST("project/create")
fun createProject(
    @Header("Authorization") token: String,
    @Part("title") title: String,
    @Part img: MultipartBody.Part,
    @Part("release_date") releaseDate: String,
    @PartMap contributors: HashMap<String, String>,
): Single<Response<String>>

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