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你好，你能幫我這個嗎？我目前正在製作一個應用程序，可以將多個文件上傳到Web API，目前我可以上傳單個文件，但是當我試圖上傳多個文件時，只有第一個文件成功上傳並且沒有損壞，儘管其他文件（文件名）仍然可以看到該網站，但已損壞。我有一個奇怪的懷疑，我的代碼下面（特別是循環）給我的應用程序不正確的輸出，但我無法弄清楚。預先感謝任何能夠幫助我的人。上傳多個圖像到web API
protected Boolean doInBackground(String... arg0)
{
try
{
JSONObject jObjectFileUpload = new JSONObject();
FileBody localFileBody;
MultipartEntity localMultipartEntity;
HttpParams httpParameters = new BasicHttpParams();
HttpConnectionParams.setConnectionTimeout(httpParameters, 15000);
HttpConnectionParams.setSoTimeout(httpParameters, 15000);
HttpPost httpPost = new HttpPost("http://sampleserversvr4.guru.com:0727/api/fileupload");
HttpClient httpclient = new DefaultHttpClient(httpParameters);
httpPost.addHeader("Authorization","Basic "+ Base64.encodeToString((_username + ":" + _password).getBytes(),Base64.NO_WRAP));
for (int i = 0; i < Constants.ARRAYLIST_URI.size(); i++)
{
uri = Constants.ARRAYLIST_URI.get(i);
file = new File(uri);
mimetype = Constants.getMimeType(uri);
filename = file.getName();
localFileBody = new FileBody(file, mimetype);
localMultipartEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
try {
localMultipartEntity.addPart("name", new StringBody(filename));
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
try {
localMultipartEntity.addPart("chunk", new StringBody("1"));
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
localMultipartEntity.addPart("file data", localFileBody);
httpPost.setEntity(localMultipartEntity);
HttpResponse localHttpResponse = httpclient.execute(httpPost);
Log.i("response upload", localHttpResponse.toString());
Log.i("Multipart Entity", localMultipartEntity.toString());
}
} catch (ClientProtocolException e)
{
e.printStackTrace();
Log.e("fileUpload", "ClientProtocolException in callWebService(). " + e.getMessage());
} catch (IOException e)
{
e.printStackTrace();
Log.e("fileUpload","IOException in callWebService(). " + e.getMessage());
}
return true;
}