FileNotFoundExcption on connection.getInputStream(); line on API level less than 23

Question

I am downloading HTML file from server using URLConnection but I am getting FileNotFoundException. My path is correct. Using same code same file is downloaded on android of API level 25 but on API level less than it is not downloading. Also connection.getContentLength(); is giving 311 value always. I am not getting any answer to solve this. I am hereby adding my code.

My class file code is

String HomeScreenResourcefilename = WebHomescreenResObj.getString("FileName");
                        int ProductTargetID = WebHomescreenResObj.getInt("ProductTargetID");

                        String WebURL_Part1 = context.getResources().getString(R.string.FileDownloadRootPath)+"/ExhibitorData/";
                        String WebURL_Part2 = GlobalVariables.tradeShowName+" - "+GlobalVariables.exhibitorName+"/HTMLHomeScreen/"+ProductTargetID +"/"+HomeScreenResourcefilename;

                        String WebURL = WebURL_Part1  + WebURL_Part2;

try {


                            URL url = new URL(WebURL);
                            File file = new File(context.getFilesDir(), HomeScreenResourcefilename);

                            URLConnection connection = url.openConnection();
                            connection.connect();
                            FileOutputStream fileOutput = new FileOutputStream(file);


                            //Stream used for reading the data from the internet
                            InputStream inputStream = connection.getInputStream();
                            byte[] buffer = new byte[1024];
                            int bufferLength = 0;

                            while ((bufferLength = inputStream.read(buffer)) > 0) {
                                fileOutput.write(buffer, 0, bufferLength);
                            }

                            fileOutput.close();
} catch (Exception e1) {
                            e1.printStackTrace();
                            LogE("error in 14 :"+e1);
                        }

Can you try changing File file = new File(context.getFilesDir(), HomeScreenResourcefilename); to File file = new File(context.getFilesDir().getAbsolutePath(), HomeScreenResourcefilename); — Kapil G, Jul 31 '17 at 12:53
InputStream inputStream = connection.getInputStream(); is throwing Exception. Also using same code another file from same server with different location is downloaded successfully. — Snehal Gurav, Jul 31 '17 at 13:42
getAbsolutePath() is also not working. Same exception is there. Also tell me about that 311 content size. Whysame size always which throws exception. — Snehal Gurav, Jul 31 '17 at 13:49

graypacket · Accepted Answer · 2017-08-03T06:06:51.050

0

Use HttpURLConnection and then connection.getResponseCode() to get the status code. If it is greater than 400, that might be the reason.
Update: Use url encoding.

edited Aug 03 '17 at 06:06

answered Jul 31 '17 at 13:45

graypacket

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1
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I am using URLConnection so connection.getResponseCode() can not be used. Is there any another method to check response code?? – Snehal Gurav Jul 31 '17 at 13:50
URLConnection doesn't have such method. Use HttpURLConnection instead. – graypacket Jul 31 '17 at 13:58
On API 21 I am getting 400 as response code but on API level 24 I am getting 200. How to solve the problem as file exists there? – Snehal Gurav Aug 01 '17 at 06:14
My response is like 400: Bad Request
Bad Request
HTTP Error 400. The request is badly formed.
– Snehal Gurav Aug 02 '17 at 05:27
Try encoding the url. Look at this https://stackoverflow.com/questions/3286067/url-encoding-in-android – graypacket Aug 02 '17 at 12:32
I have try this also but its giving 404 error on both API as space in URL is replaced by "-" – Snehal Gurav Aug 02 '17 at 12:51
I have try part of URL to be encode but its working only on API 25 not on API below it. – Snehal Gurav Aug 02 '17 at 12:58
Space should be encoded with + or %20. Can you show me the url? – graypacket Aug 02 '17 at 13:47
Yes I have try this and its working. Thank you so much. – Snehal Gurav Aug 03 '17 at 05:59
You're welcome. Will you please upvote and accept the answer? – graypacket Aug 03 '17 at 06:09
I have replaced space by %20 and half URL is encoded. Also I use HTTPURLConnection. – Snehal Gurav Aug 03 '17 at 06:20

FileNotFoundExcption on connection.getInputStream(); line on API level less than 23

1 Answers1

Bad Request