OkHttp使用（三）文件上传

         基于Http的文件上传，采用表单方式上传文件。

         通过“addFormDataPart”可以添加多个上传的文件。

private void uploadMultiFile() {         final String url = "upload url"         File file = new File("fileDir", "test.jpg");         RequestBody fileBody = RequestBody.create(MediaType.parse("application/octet-stream"), file);         RequestBody requestBody = new MultipartBody.Builder()                 .setType(MultipartBody.FORM)                  .addFormDataPart("image", "test.jpg", fileBody)                 .build();         Request request = new Request.Builder()                 .url(url)                 .post(requestBody)                 .build();         final okhttp3.OkHttpClient.Builder httpBuilder = new OkHttpClient.Builder();         OkHttpClient okHttpClient  = httpBuilder                 //设置超时                 .connectTimeout(10, TimeUnit.SECONDS)                 .writeTimeout(15, TimeUnit.SECONDS)                 .build();         okHttpClient.newCall(request).enqueue(new Callback() {             @Override             public void onFailure(Call call, IOException e) {                 Log.e(TAG, "uploadMultiFile() e=" + e);             }             @Override             public void onResponse(Call call, Response response) throws IOException {                 Log.i(TAG, "uploadMultiFile() response=" + response.body().string());             }         });     }