如何为 OKHTTP 格式编写类似的 Retrofilt 代码？

Question

我的 OKHttp 代码运行良好，但有时无法进入 ENQUEUE。它没有显示任何关于它的信息。我正在尝试在 Retrofit 语法中转换相同的代码。任何人都可以帮助我使用正确的语法吗？

file1/2/3下面是图片文件路径。

OkHttpClient client = new OkHttpClient().newBuilder()
                    .build();
            MediaType mediaType = MediaType.parse("text/plain");
            RequestBody body = new MultipartBody.Builder().setType(MultipartBody.FORM)
                    .addFormDataPart("photos1", String.valueOf(file1),
                            RequestBody.create(MediaType.parse("application/octet-stream"),
                                    new File(String.valueOf(file2)) ))
                    .addFormDataPart("photos2", String.valueOf(file2),
                            RequestBody.create(MediaType.parse("application/octet-stream"),
                                    new File(String.valueOf(file3)) ))
                    .addFormDataPart("photos3", String.valueOf(file3),
                            RequestBody.create(MediaType.parse("application/octet-stream"),
                                    new File(String.valueOf(file1)) ))
                    .addFormDataPart("product_name",txtprodname.getText().toString())
                    .addFormDataPart("description",txtdesc.getText().toString())
                    .addFormDataPart("product_cost",txtprice.getText().toString())
                    .addFormDataPart("tax_value",spntax.getSelectedItem().toString())
                    .addFormDataPart("within_city_cost",txtcostwithincity.getText().toString())
                    .addFormDataPart("outside_city_cost",txtcostoutsideincity.getText().toString())
                    .addFormDataPart("user_id",String.valueOf(user_id))
                    .addFormDataPart("category_name", spncategory.getSelectedItem().toString())
                    .addFormDataPart("tax_name",taxname)
                    .addFormDataPart("business_name", business_name)
                    .addFormDataPart("youtube_link", txtyoutube.getText().toString())
                    .addFormDataPart("length", txtL.getText().toString())
                    .addFormDataPart("width", txtW.getText().toString())
                    .addFormDataPart("height", txtH.getText().toString())
                    .addFormDataPart("volumetric_weight", txtwt.getText().toString())
                    .build();

            Request request = new Request.Builder()
                    .url("https://<myip>/api/productapi/")
                    .method("POST", body)
                    .build();

client.newCall(request).enqueue(new okhttp3.Callback() .... rest of the code.

我无法弄清楚 Retrofit 的类似语法。任何帮助将不胜感激。

问候， PD

Answer 1

如果您需要使用 Retrofit 在 API 中发送任何文件，那么您需要按照以下步骤操作。

1. 改造初始化创建类APIClient

public class APIClient {
    public static Retrofit retrofit;

    public static Retrofit getClient() {
        HttpLoggingInterceptor interceptor = new HttpLoggingInterceptor();
        interceptor.setLevel(HttpLoggingInterceptor.Level.BODY);
        OkHttpClient client = new OkHttpClient.Builder().addInterceptor(interceptor).connectTimeout(120, TimeUnit.SECONDS).readTimeout(120, TimeUnit.SECONDS).writeTimeout(120, TimeUnit.SECONDS).build();
        Gson gson = new GsonBuilder()
                .setLenient()
                .create();
        if (retrofit == null) {
            retrofit = new Retrofit.Builder()
                    .baseUrl("https://myapi.com")
                    .addConverterFactory(GsonConverterFactory.create(gson))
                    .client(client)
                    .build();
        }
        return retrofit;
    }

1. 创建一个接口以列出 API 密钥，考虑接口名称 APiInterfacr。 最重要的是将 RequestBody 的 DataType 分配给您的所有 String/Int 数据...并分配 MultiPartBody.Part em> 只归档.. 用户是我的对象等级，您需要创建您的对象等级并替换...

public interface APIInterface {
    @Multipart
    @POST("xyznode")
    Call<Users> updateUser(@Part("id") RequestBody id,
                           @Part("name") RequestBody name,
                           @Part("email") RequestBody email,
                           @Part("password") RequestBody password,
                           @Part("paypal_address") RequestBody paypal_address,
                           @Part("user_location") RequestBody user_location,
                           @Part("role_id") RequestBody role_id,
                           @Part MultipartBody.Part image_url);

}

1. 现在需要调用 API。

  public void updateUser(RequestBody id, RequestBody name, RequestBody email, RequestBody password, RequestBody paypal_address, RequestBody user_location, MultipartBody.Part profile_photo_url, RequestBody role) {
        if (NetworkConnectivity.isOnline()) {
            Call<Users> call = apiInterface.updateUser(id, name, email, password, paypal_address, user_location, role, profile_photo_url);
            call.enqueue(new Callback<Users>() {
                @Override
                public void onResponse(Call<Users> call, Response<Users> response) {
                    if (response.isSuccessful()) {
                     
           //Do your stuff here...
                    }
                }

                @Override
                public void onFailure(Call<Users> call, Throwable t) {
//
                }
            });
        } 
    }

4. 最重要的是调用这个特定的函数，为此您需要列出在 API 中打包所需的所有内容...

                       RequestBody fileReqBody = RequestBody.create(MediaType.parse("image/*"), file);
                        profileImage = MultipartBody.Part.createFormData("profile_photo_url", file.getName(), fileReqBody);
                        RequestBody id = RequestBody.create(MediaType.parse("multipart/form-data"), preferencesHandler.getUid());
                        RequestBody name = RequestBody.create(MediaType.parse("multipart/form-data"), txt_name);
                        RequestBody email = RequestBody.create(MediaType.parse("multipart/form-data"), txt_email);
                        RequestBody password = RequestBody.create(MediaType.parse("multipart/form-data"), txt_password);
                        RequestBody roleid = RequestBody.create(MediaType.parse("multipart/form-data"), preferencesHandler.getRole());
                        RequestBody country = RequestBody.create(MediaType.parse("multipart/form-data"), txt_country);
                        RequestBody paypal = RequestBody.create(MediaType.parse("multipart/form-data"), txt_paypal);

5. 现在调用函数..

onUpdateUser(id, name, email, password, paypal, country, roleid, profileImage);

6. 要在构建文件中添加的依赖项。

//Retrofit Dependency
    implementation 'com.squareup.retrofit2:retrofit:2.1.0'
    implementation 'com.google.code.gson:gson:2.6.2'
    implementation 'com.squareup.retrofit2:converter-gson:2.1.0'
    implementation 'com.squareup.okhttp3:logging-interceptor:3.4.1'

现在你准备好了... :-)