大家好,你能帮我解决这个问题吗?我目前正在制作一个可以将多个文件上传到 Web API 的应用程序,目前,我可以上传一个文件,但是当我尝试上传多个文件时,只有第一个文件成功上传并且没有损坏,尽管其他文件(文件名)仍然可以在网站上看到,但已损坏。我有一个奇怪的疑问,我的代码(特别是循环)在我的应用程序上给出了不正确的输出,但我无法弄清楚。提前感谢任何可以帮助我的人。
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;
}