java - 使用Retrofit2/okhttp3上传文件，上传 Action 总是执行两次，一次快，一次慢

Question

我使用 ProgressRequestBody 来显示上传操作的进度。

@Override
public void writeTo(BufferedSink sink) throws IOException {
    // see https://github.com/square/okhttp/issues/1587
    // JakeWharton commented on 28 Apr 2015  's answer
    final BufferedSink progressSink = Okio.buffer(new ForwardingSink(sink) {
        long bytesWritten = 0L;
        long contentLength = 0L;

        @Override
        public void write(Buffer source, long byteCount) throws IOException {
            if (contentLength == 0) {
                contentLength = contentLength();
            }
            bytesWritten += byteCount;
            mListener.onProgressUpdate(bytesWritten,contentLength,bytesWritten == contentLength);
            System.out.println("--byte--"+bytesWritten);
            super.write(source, byteCount);
        }
    });
    requestBody.writeTo(progressSink);
    System.out.println("--byte-- start---");
    progressSink.flush();
    System.out.println("--byte-- end---");
}

这个方法在我每次执行上传的 Action 时被调用了两次。起初，我认为问题可能是添加到 okhttpclient 中用于日志的拦截器，但事实并非如此。谁能帮助我？谢谢

更多代码:

public interface UploadInterface {

@Multipart
@POST("path")
Call<JsonBase<Result>> uploadFile(
        @Query("_appTicket") String cookie, 
        @Query("Id") String id, 
        @Part MultipartBody.Part requestBody
);
}

上传 Action :

final ProgressRequestBody progressRequestBody
                            = new ProgressRequestBody(
                            RequestBody.create(
                                    MediaType.parse("multipart/form-data"),
                                    tempZip
                            )
                    );
MultipartBody.Part part = MultipartBody.Part
                            .createFormData("file","upload",progressRequestBody);
                    final Call<JsonBase<JsonUploadResult>> call 
                            = uplocaInterface.uploadFile(cookie,s,part);

Answer 1

似乎您正在使用 HttpLoggingInterceptor，它为请求正文调用了 writeTo。您可以忽略该问题，因为应该为发布版本禁用 HttpLoggingInterceptor 或覆盖 HttpLoggingInterceptor 的拦截方法并为此特定上传请求禁用它。