嗨,我无法使用改造版2.0.0-beta2上传图像。它给我“图像丢失”错误。尽管我检查了系统中是否存在该文件,并且是否在“图像”视图中显示了该文件,但它仍可以正确显示。
需要上传的URL: http : //mywebsite.com/signature/upload/
所以我的BASE_URL是= http://mywebsite.com/
我的.gradle文件具有以下内容:
compile 'com.squareup.retrofit:retrofit:2.0.0-beta2'
compile 'com.squareup.retrofit:converter-gson:2.0.0-beta2'
compile 'com.squareup.okhttp:logging-interceptor:2.6.0'
SeriveGenerator.java类是
public class ServiceGenerator {
public static final String API_BASE_URL = Urls.URL_BASE;
private static OkHttpClient httpClient = new OkHttpClient();
private static Retrofit.Builder builder =
new Retrofit.Builder()
.baseUrl(API_BASE_URL)
.addConverterFactory(GsonConverterFactory.create());
public static <S> S createService(Class<S> serviceClass) {
Retrofit retrofit = builder.client(httpClient).build();
HttpLoggingInterceptor interceptor = new HttpLoggingInterceptor();
interceptor.setLevel(HttpLoggingInterceptor.Level.BODY);
httpClient.interceptors().add(interceptor);
return retrofit.create(serviceClass);
}
}
UploadService.java类为
public interface UploadService {
@Multipart
@POST("/signature/upload/")
// Tried to change this to "/signature/upload" as well (no slash in end)
// then gives Method not allowed error"
Call<String> upload(
@Part("image") RequestBody file,
@Part("image_name") String name);
}
最后在我的android活动中
// photoFile is the file, checked that it exist in system and
// path is also correct
public void uploadFileToServer() {
UploadService service =
ServiceGenerator.createService(UploadService.class);
String name = "xyz.jpg";
RequestBody requestBody =
RequestBody.create(MediaType.parse("multipart/form-data"), photoFile);
Call<String> call = service.upload(requestBody, name);
call.enqueue(new Callback<String>() {
@Override
public void onResponse(Response<String> response, Retrofit retrofit) {
Log.v("Upload", "success");
}
@Override
public void onFailure(Throwable t) {
Log.e("Upload", t.getMessage());
}
});
}
因此,我从活动中获取成功日志“成功”,但服务器文件不存在,使用邮递员,我尝试手动将图像上传到表单数据中,是否正确上传。
几天前,我遇到了类似的问题。这是我的工作代码。
首先,您必须定义接口。不添加内容类型标头非常重要。在下面的内容中,您将看到@Part("picture\";
“图片”是后端期望的相应名称(在我的情况下)。因此,您必须更改此名称才能使其与您的后端一起使用。filename = \“ image \”仅定义您上传的图像的名称。就我而言,该方法位于“ DiaryService.java”中。
@Multipart
@POST("signature/upload")
public Call<Void> addImageElementToDiary(@Part("picture\"; filename=\"image\" ") RequestBody picture,
@Part("sort") RequestBody sort);
现在,您可以调用上面定义的服务。正确解析Mediatype很重要。您使用了“ multipart / form-data”,这在我的情况下不起作用。您应该查看以下媒体类型。
File file = new File(((CreateDiaryImage) element).getImagePath());
RequestBody sort = RequestBody.create(MediaType.parse("text/plain"), element.getSort() + "");
RequestBody requestBody =
RequestBody.create(MediaType.parse("image/*"), file);
Call<Void> call = diaryService.addImageElementToDiary(requestBody, sort);
call.enqueue(new Callback<Void>() {
@Override
public void onResponse(Response<Void> response, Retrofit retrofit) {
Log.v("Upload", "success");
}
@Override
public void onFailure(Throwable t) {
Log.e("Upload", t.getMessage());
}
});
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