我有一张邮递员的图片，如下所示。如何在 Retrofit 2 中做同样的事情？
我已经这样声明了接口：
@Multipart
@POST("/api/Pharmarcy/UploadImage")
Call<ResponseBody> uploadPrescriptionImage(
@Query("accessToken") String token,
@Query("pharmarcyRequestId") int pharmacyRequestedId,
@Part MultipartBody.Part image);
【问题讨论】：
@Multipart
@POST("user/updateprofile")
Observable<ResponseBody> updateProfile(@Part("user_id") RequestBody id,
@Part("full_name") RequestBody fullName,
@Part MultipartBody.Part image,
@Part("other") RequestBody other);
//pass it like this
File file = new File("/storage/emulated/0/Download/Corrections 6.jpg");
RequestBody requestFile =
RequestBody.create(MediaType.parse("multipart/form-data"), file);
// MultipartBody.Part is used to send also the actual file name
MultipartBody.Part body =
MultipartBody.Part.createFormData("image", file.getName(), requestFile);
// add another part within the multipart request
RequestBody fullName =
RequestBody.create(MediaType.parse("multipart/form-data"), "Your Name");
service.updateProfile(id, fullName, body, other);
看看我传递多部分和字符串参数的方式。希望对您有所帮助！
【讨论】：
对于有 inputStream 的用户，您可以使用 Multipart 上传 inputStream。
@Multipart
@POST("pictures")
suspend fun uploadPicture(
@Part part: MultipartBody.Part
): NetworkPicture
然后在你的存储库类中：
suspend fun upload(inputStream: InputStream) {
val part = MultipartBody.Part.createFormData(
"pic", "myPic", RequestBody.create(
MediaType.parse("image/*"),
inputStream.readBytes()
)
)
uploadPicture(part)
}
如果您的后端不允许多部分，您可以将输入流转换为字节并将字节数组作为请求正文发送，如下所示。
// In your service
@PUT
suspend fun s3Upload(
@Header("Content-Type") mime: String,
@Url uploadUrl: String,
@Body body: RequestBody
)
// In your repository
val body = RequestBody.create(MediaType.parse("application/octet"), inputStream.readBytes())
networkService.s3Upload(mime, url, body)
要获得输入流，您可以这样做。
在您的片段或活动中，您需要创建一个返回InputStream 的图像选择器。 InputStream 的优势在于它可以用于云上的文件，例如 google drive 和 dropbox。
通过View.OnClickListener 或onOptionsItemSelected 致电pickImagesLauncher.launch("image/*")。 （见Activity Result APIs）。
private val pickImagesLauncher =
registerForActivityResult(ActivityResultContracts.GetContent()) { uri ->
uri?.let {
val stream = contentResolver.openInputStream(it)
itemViewModel.uploadPicture(stream)
}
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
btn.setOnClickListener {
pickImagesLauncher.launch("image/*")
}
}
【讨论】：
imageUri: Uri创建InputStream
readBytes而不提及大小，那是不是会将整个文件内容加载到内存中，并导致OutOfMemory异常？
onActivityResult 这样的 API。最好使用名为 ActivityResultContract 和 registerForActivityResult() 的新 API。
import retrofit2.Retrofit;
import retrofit2.converter.gson.GsonConverterFactory;
class AppConfig {
private static String BASE_URL = "http://mushtaq.16mb.com/";
static Retrofit getRetrofit() {
return new Retrofit.Builder()
.baseUrl(AppConfig.BASE_URL)
.addConverterFactory(GsonConverterFactory.create())
.build();
}
}
========================================================
import okhttp3.MultipartBody;
import okhttp3.RequestBody;
import retrofit2.Call;
import retrofit2.http.Multipart;
import retrofit2.http.POST;
import retrofit2.http.Part;
interface ApiConfig {
@Multipart
@POST("retrofit_example/upload_image.php")
Call<ServerResponse> uploadFile(@Part MultipartBody.Part file,
@Part("file") RequestBody name);
/*@Multipart
@POST("ImageUpload")
Call<ServerResponseKeshav> uploadFile(@Part MultipartBody.Part file,
@Part("file") RequestBody name);*/
@Multipart
@POST("retrofit_example/upload_multiple_files.php")
Call<ServerResponse> uploadMulFile(@Part MultipartBody.Part file1,
@Part MultipartBody.Part file2);
}
//https://drive.google.com/open?id=0BzBKpZ4nzNzUMnJfaklVVTJkWEk
【讨论】：
我完全同意@tir38 和@android_griezmann。这将是 Kotlin 中的版本：
interface servicesEndPoint {
@Multipart
@POST("user/updateprofile")
fun updateProfile(@Part("user_id") id:RequestBody, @Part("full_name") fullName:RequestBody, @Part image: MultipartBody.Part, @Part("other") other:RequestBody): Single<UploadPhotoResponse>
companion object {
val API_BASE_URL = "YOUR_URL"
fun create(): servicesPhotoEndPoint {
val retrofit = Retrofit.Builder()
.addCallAdapterFactory(RxJava2CallAdapterFactory.create())
.addConverterFactory(GsonConverterFactory.create())
.baseUrl(API_BASE_URL)
.build()
return retrofit.create(servicesPhotoEndPoint::class.java)
}
}
}
// Pass it like this
val file = File(RealPathUtils.getRealPathFromURI_API19(context, uri))
val requestFile: RequestBody = RequestBody.create(MediaType.parse("multipart/form-data"), file)
// MultipartBody.Part is used to send also the actual file name
val body: MultipartBody.Part = MultipartBody.Part.createFormData("image", file.name, requestFile)
// Add another part within the multipart request
val fullName: RequestBody = RequestBody.create(MediaType.parse("multipart/form-data"), "Your Name")
servicesEndPoint.create().updateProfile(id, fullName, body, fullName)
要获取真实路径，请使用 RealPathUtils。在这个问题的@Harsh Bhavsar 的答案中检查这个类：How to get the Full file path from URI。
要getRealPathFromURI_API19，您需要READ_EXTERNAL_STORAGE的权限。
【讨论】：
使用 Retrofit 2.0 你可以这样：
@Multipart
@POST("uploadImage")
Call<ResponseBody> uploadImage(@Part("file\"; fileName=\"myFile.png\" ")RequestBody requestBodyFile, @Part("image") RequestBody requestBodyJson);
提出请求：
File imgFile = new File("YOUR IMAGE FILE PATH");
RequestBody requestBodyFile = RequestBody.create(MediaType.parse("image/*"), imgFile);
RequestBody requestBodyJson = RequestBody.create(MediaType.parse("text/plain"),
retrofitClient.getJsonObject(uploadRequest));
//make sync call
Call<ResponseBody> uploadBundle = uploadImpl.uploadImage(requestBodyFile, requestBodyJson);
Response<BaseResponse> response = uploadBundle.execute();
【讨论】：
@Multipart
@POST(Config.UPLOAD_IMAGE)
Observable<Response<String>> uploadPhoto(@Header("Access-Token") String header, @Part MultipartBody.Part imageFile);
你可以这样调用这个api：
public void uploadImage(File file) {
// create multipart
RequestBody requestFile = RequestBody.create(MediaType.parse("multipart/form-data"), file);
MultipartBody.Part body = MultipartBody.Part.createFormData("image", file.getName(), requestFile);
// upload
getViewInteractor().showProfileUploadingProgress();
Observable<Response<String>> observable = api.uploadPhoto("",body);
// on Response
subscribeForNetwork(observable, new ApiObserver<Response<String>>() {
@Override
public void onError(Throwable e) {
getViewInteractor().hideProfileUploadingProgress();
}
@Override
public void onResponse(Response<String> response) {
if (response.code() != 200) {
Timber.d("error " + response.code());
return;
}
getViewInteractor().hideProfileUploadingProgress();
getViewInteractor().onProfileImageUploadSuccess(response.body());
}
});
}
【讨论】：
改造2.0解决方案
@Multipart
@POST(APIUtils.UPDATE_PROFILE_IMAGE_URL)
public Call<CommonResponse> requestUpdateImage(@PartMap Map<String, RequestBody> map);
和
Map<String, RequestBody> params = new HashMap<>();
params.put("newProfilePicture" + "\"; filename=\"" + FilenameUtils.getName(file.getAbsolutePath()), RequestBody.create(MediaType.parse("image/jpg"), file));
Call<CommonResponse> call = request.requestUpdateImage(params);
你可以使用
图片/jpg
图片/png
图片/gif
【讨论】：
这很容易。这是API接口
public interface Api {
@Multipart
@POST("upload")
Call<MyResponse> uploadImage(@Part("image\"; filename=\"myfile.jpg\" ") RequestBody file, @Part("desc") RequestBody desc);
}
您可以使用以下代码拨打电话。
private void uploadFile(File file, String desc) {
//creating request body for file
RequestBody requestFile = RequestBody.create(MediaType.parse(getContentResolver().getType(fileUri)), file);
RequestBody descBody = RequestBody.create(MediaType.parse("text/plain"), desc);
//The gson builder
Gson gson = new GsonBuilder()
.setLenient()
.create();
//creating retrofit object
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(Api.BASE_URL)
.addConverterFactory(GsonConverterFactory.create(gson))
.build();
//creating our api
Api api = retrofit.create(Api.class);
//creating a call and calling the upload image method
Call<MyResponse> call = api.uploadImage(requestFile, descBody);
//finally performing the call
call.enqueue(new Callback<MyResponse>() {
@Override
public void onResponse(Call<MyResponse> call, Response<MyResponse> response) {
if (!response.body().error) {
Toast.makeText(getApplicationContext(), "File Uploaded Successfully...", Toast.LENGTH_LONG).show();
} else {
Toast.makeText(getApplicationContext(), "Some error occurred...", Toast.LENGTH_LONG).show();
}
}
@Override
public void onFailure(Call<MyResponse> call, Throwable t) {
Toast.makeText(getApplicationContext(), t.getMessage(), Toast.LENGTH_LONG).show();
}
});
}
【讨论】：