使用 PartMap Retrofit 2 上传多个文件 [英] Upload multiple files with PartMap Retrofit 2
问题描述
发布新产品时,我的服务器需要使用密钥捕获文件.文件数量没有限制.文件不受限制.
When posting a new product, my server needs to catch files with keys. There's no limit to how many files. Files are unlimited.
使用 Retrofit 1.9,一切都很完美.更新到 Retrofit 2 后,我的服务器没有收到任何文件.
With Retrofit 1.9, everything worked perfect. After I update to Retrofit 2, my server does not receive any file.
如果我编辑服务器,它将不再向后兼容.我需要让 Android 应用像在 Retrofit 1.9 上一样工作.
If I edit the server, it won't be backward compatible anymore. I need to make the android app works like it worked with Retrofit 1.9.
这是我的实施方式.
用于创建 ApiService 接口的类.
class to create ApiService interface.
public class ApiClient {
public interface ApiInterface {
@Multipart
@POST("/products/")
void uploadProduct(
@PartMap Map<String, String> params,
@PartMap Map<String, TypedFile> files,
Callback<Product> cb);
}
}
使用 ApiService.
using the ApiService.
Map<String, String> params = new HashMap<>();
params.put("title", title);
params.put("price", price);
params.put("content", content);
Map<String, TypedFile> files = new HashMap<>();
for (int pos = 0; pos < photoPaths.length; pos++) {
if (!Strings.isNullOrEmpty(photoPaths[pos])) {
TypedFile typedFile = new TypedFile("multipart/form-data", new File(photoPaths[pos]));
files.put("photo_" + String.valueOf(pos + 1), typedFile);
}
}
apiInterface.uploadProduct(params, files, cb);
改造 2
用于创建 ApiService 接口的类.
Retrofit 2
class to create ApiService interface.
public class ApiClient {
public interface ApiInterface {
@Multipart
@POST("/products/")
Call<Product> uploadProduct(
@PartMap Map<String, RequestBody> params,
@PartMap Map<String, RequestBody> files);
}
public static final String MULTIPART_FORM_DATA = "multipart/form-data";
public static RequestBody createRequestBody(@NonNull File file) {
return RequestBody.create(
MediaType.parse(MULTIPART_FORM_DATA), file);
}
public static RequestBody createRequestBody(@NonNull String s) {
return RequestBody.create(
MediaType.parse(MULTIPART_FORM_DATA), s);
}
}
使用 ApiService
using the ApiService
Map<String, RequestBody> params = new HashMap<>();
params.put("title", ApiClient.createRequestBody(title));
params.put("price", ApiClient.createRequestBody(price));
params.put("content", ApiClient.createRequestBody(content));
Map<String, RequestBody> files = new HashMap<>();
for (int pos = 0; pos < photoPaths.length; pos++) {
if (!TextUtils.isEmpty(photoPaths[pos])) {
RequestBody requestBody = ApiClient.createRequestBody(new File(photoPaths[pos]));
files.put("photo_" + String.valueOf(pos + 1), requestBody);
}
}
Call<Product> call = apiInterface.uploadProduct(params, files);
推荐答案
我应用了这个解决方案,现在已经修复.
I applied this solution and it's now fixed.
这是我的实施方式.
Map<String, RequestBody> params = new HashMap<>();
params.put("title", ApiClient.createRequestBody(title));
params.put("price", ApiClient.createRequestBody(price));
params.put("content", ApiClient.createRequestBody(content));
Map<String, RequestBody> files = new HashMap<>();
for (int pos = 0; pos < photoPaths.length; pos++) {
if (!TextUtils.isEmpty(photoPaths[pos])) {
RequestBody requestBody = ApiClient.createRequestBody(new File(photoPaths[pos]));
// fix is right here
String key = String.format("%1$s\"; filename=\"%1$s", "photo_" + String.valueOf(pos + 1));
files.put(key, requestBody);
}
}
Call<Product> call = apiInterface.uploadProduct(params, files);
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