使用改造將圖像上傳到服務器

Question

我正在嘗試使用改造 2 將圖像上傳到服務器。 我認為我發送數據的方式不正確，但我還沒有弄清楚我的問題在哪里。

我應該以這種格式發送數據： {"file": image, "userID": userId}

這是我在改造@POST("avatar") fun uploadImage(@Body data: Data ) : Call<ResponseBody>代碼： @POST("avatar") fun uploadImage(@Body data: Data ) : Call<ResponseBody>

我用文件和用戶 ID 創建了一個對象 Data 我不知道這是否是正確的方法。 我也看過這個例子

ublic interface UploadAPIs {
@Multipart
@POST("/upload")
Call<ResponseBody> uploadImage(@Part MultipartBody.Part file, @Part("name") RequestBody requestBody);

}

但我真的不太明白，我怎么能用部分多部分來發送一個對象

這就是我創建從片段中的圖庫獲取的圖像文件的方式

override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
    super.onActivityResult(requestCode, resultCode, data)

    if (resultCode == Activity.RESULT_OK)

        when(requestCode){
            GALLERY -> {
                val selectedImage= data!!.data

                val file = File(selectedImage.path)

                val data = Data(file, userID)

                val call = api!!.uploadImage(data)

                call.enqueue(object: Callback<ResponseBody>{
                    override fun onFailure(call: Call<ResponseBody>, t: Throwable) {
                        Toast.makeText(context, t.message, Toast.LENGTH_SHORT).show()
                    }

                    override fun onResponse(call: Call<ResponseBody>, response: Response<ResponseBody>) {
                        val response = response.body()!!.string()
                        println("Response " + response)

                        //response says user does not exist because the way I send data is not correct
                    }

                })

            }

            CAMERA -> {
             //code here
            }
        }

}

這是我為 Data 對象創建的類

class Data (val file: File, userID: Int)

如果有人可以幫助我，我將不勝感激:)

更新代碼：

@Multipart
@POST("avatar")
fun uploadImage(
        @Part("userID") user_ID: RequestBody,
        @Part image: MultipartBody.Part) : Call<ResponseBody>


override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
    super.onActivityResult(requestCode, resultCode, data)

    if (resultCode == Activity.RESULT_OK)

        when(requestCode){
            GALLERY -> {
                val selectedImage= data!!.data

                val bitmap = MediaStore.Images.Media.getBitmap(context!!.contentResolver, selectedImage)
                avatar.setImageBitmap(bitmap)

                val file = File(getRealPathFromURI(selectedImage))


                val id = RequestBody.create(MediaType.parse("text/plain"), userID.toString())

                //val reqBody = RequestBody.create(MediaType.parse(activity!!.contentResolver.getType(selectedImage)!!), file)

                val reqBody = RequestBody.create(MediaType.parse("image/*"), file)

                val body = MultipartBody.Part.createFormData("file", file.name, reqBody)

                val call = api!!.uploadImage(id, body)

                call.enqueue(object: Callback<ResponseBody>{
                    override fun onFailure(call: Call<ResponseBody>, t: Throwable) {
                        Toast.makeText(context, t.message, Toast.LENGTH_SHORT).show()
                        println("Failure")
                    }

                    override fun onResponse(call: Call<ResponseBody>, response: Response<ResponseBody>) {
                        if (response.isSuccessful){
                            println("Successful " + response.body()?.string())

                        }else{
                            response.errorBody()?.string()
                            println("Error " + response.headers().toString())

                        }


                    }

                })

            }

            CAMERA -> {
               //code
            }
        }

}

Answer 1

override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
    super.onActivityResult(requestCode, resultCode, data)

    if (resultCode == Activity.RESULT_OK)

        when(requestCode){
            GALLERY -> {
                val selectedImage= data!!.data

                val bitmap = MediaStore.Images.Media.getBitmap(context!!.contentResolver, selectedImage)
                avatar.setImageBitmap(bitmap)

                val file = File(getRealPathFromURI(selectedImage))

                val id = RequestBody.create(MediaType.parse("text/plain"), userID.toString())

                val reqBody = RequestBody.create(MediaType.parse("image/jpeg"), file)

                val body = MultipartBody.Part.createFormData("file", file.name, reqBody)

                val api = RetrofitClient.getInstance().apiService
                val call = api!!.uploadImage(id, body)

                call.enqueue(object: Callback<ResponseBody>{
                    override fun onFailure(call: Call<ResponseBody>, t: Throwable) {
                        Toast.makeText(context, t.message, Toast.LENGTH_SHORT).show()
                        println("Failure")
                    }

                    override fun onResponse(call: Call<ResponseBody>, response: Response<ResponseBody>) {
                        if (response.isSuccessful){
                            println("Successful " + response.body()?.string())

                        }else{
                            response.errorBody()?.string()
                            println("Error " + response.headers().toString())

                        }


                    }

                })


            }

            CAMERA -> {
                //code here
            }
        }

}

在 API 接口中：

@Multipart
@POST("avatar")
fun uploadImage(
        @Part("userID") user_ID: RequestBody,
        /*@Part("file") name: RequestBody*/
        @Part image: MultipartBody.Part) : Call<ResponseBody>