改型：如何发送具有多部分请求的字段

Question

我想发送图像或文件作为多部分请求。但是请求将需要额外的标识符，如Int ID或字符串。我怎样才能发送那些而不为每个API调用制定特定的接口？使用基本API，我可以将这些参数作为JSON文件发送，但是使用retfit时，我必须为特定的API调用创建精确的接口。

internal interface MultipartServicePost {
        @POST("{url}")
        @Multipart
        fun postImage(
            @Part image: MultipartBody.Part,
            @Part ("reqId") extraParam1: RequestBody,
            @Part ("typeId") extraParam2: RequestBody,
            @Part ("device") extraParam3: RequestBody,
            @Part ("token") extraParam4: RequestBody,
            @Part ("userId") extraParam5: RequestBody,
            @Path(value = "url", encoded = true)
            endpoint: String
        ): Call<ResponseBody>
    }

val client = httpClient.build()
val rBuilder = Retrofit.Builder()
             .baseUrl(url)
             .addConverterFactory(GsonConverterFactory.create())
             .client(client)
             .build()
val service = rBuilder.create(MultipartServicePost::class.java)
val req = service.postImage(body, endpoint)
val response = req.execute()

Answer 1

试试这个，让我知道它是否有效

 @POST("Url end point")
    @Multipart
    fun postImage(@PartMap map: HashMap<String, RequestBody>
     ): Call<ResponseBody>

并且像这样使用

  val map = HashMap<String, RequestBody>()
  map["reqId"] = reqId.toString().toRequestBody("text/plain".toMediaTypeOrNull())
  //for image
    val body = imageFile.asRequestBody("image/jpeg".toMediaTypeOrNull())
        map["Image kye like reqId\"; filename=\"FileName.png\" "] = body