Retrofit2 라이브러리를 이용하여 파일을 업로드하는 예제 예시다.
파일 업로드 외에 POST 변수 idx를 추가해서 보낼 때,
RequestBody descBody = RequestBody.create(MediaType.parse("text/plain"), idx);
가 추가하면 된다.
Retrofit2 통신에 대한 기본 이해는 https://link2me.tistory.com/1806 에 이미지 도식도를 참조하시라.
앱 build.gradle
dependencies {
implementation fileTree(dir: "libs", include: ["*.jar"])
implementation 'androidx.appcompat:appcompat:1.2.0'
implementation 'androidx.constraintlayout:constraintlayout:2.0.1'
implementation 'com.google.android.material:material:1.2.1'
implementation 'com.squareup.okhttp3:okhttp:4.4.0'
implementation 'com.squareup.retrofit2:retrofit:2.7.0'
implementation 'com.squareup.retrofit2:converter-gson:2.7.0'
implementation 'com.squareup.okhttp3:logging-interceptor:4.4.0'
} |
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
public interface DataCommAPI {
@Multipart
@POST(RetrofitURL.URL_ImageUpload)
Call<UploadResult> uploadFile(@Part("idx") RequestBody idx,
@Part MultipartBody.Part uploaded_file);
}
public class UploadResult {
private String result;
public String getResult() {
return result;
}
}
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public class RetrofitURL {
public static final String IPADDRESS = "http://www.abc.com/androidSample/upload/";
public static final String URL_ImageUpload = "upload.php";
}
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public class APIRequest {
static Retrofit retrofit = null;
public static Retrofit getClient() {
if (retrofit==null) {
retrofit = new Retrofit.Builder()
.baseUrl(RetrofitURL.IPADDRESS)
.client(createOkHttpClient())
.addConverterFactory(GsonConverterFactory.create())
.build();
}
return retrofit;
}
public static OkHttpClient createOkHttpClient() {
// 네트워크 통신 로그(서버로 보내는 파라미터 및 받는 파라미터) 보기
OkHttpClient.Builder builder = new OkHttpClient.Builder();
HttpLoggingInterceptor interceptor = new HttpLoggingInterceptor();
interceptor.setLevel(HttpLoggingInterceptor.Level.BODY);
builder.addInterceptor(interceptor);
return builder.build();
}
}
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private void uploadImage(String sourceImageFile, String idx){
DataCommAPI retrofitInterface = APIRequest.getClient().create(DataCommAPI.class);
File file = new File(sourceImageFile);
RequestBody requestFile = RequestBody.create(MediaType.parse("multipart/form-data"), file);
MultipartBody.Part body = MultipartBody.Part.createFormData("uploaded_file", file.getName(), requestFile);
RequestBody descBody = RequestBody.create(MediaType.parse("text/plain"), idx);
Call<UploadResult> call = retrofitInterface.uploadFile(descBody,body);
call.enqueue(new Callback<UploadResult>() {
@Override
public void onResponse(Call<UploadResult> call, Response<UploadResult> response) {
if (response.isSuccessful()) {
UploadResult responseBody = response.body();
if(responseBody.getResult().contains("success")){
Toast.makeText(getApplicationContext(), "파일 업로드 성공", Toast.LENGTH_LONG).show();
} else {
Utils.showAlert(mContext,"파일 업로드","파일 업로드 실패");
}
} else {
ResponseBody errorBody = response.errorBody();
Gson gson = new Gson();
try {
Response errorResponse = gson.fromJson(errorBody.string(), Response.class);
Toast.makeText(getApplicationContext(), errorResponse.message(), Toast.LENGTH_LONG).show();
} catch (IOException e) {
e.printStackTrace();
}
}
}
@Override
public void onFailure(Call<UploadResult> call, Throwable t) {
Log.e(TAG, "onFailure: "+t.getLocalizedMessage());
}
});
}
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