android upload image file into PHP server - php

Question

I took this code on Internet. I can upload image file to Server successful. However, the image files cannot be opened. I think the content of the files has problem after uploading. Can anybody help me please? Thank you very much
public static void put(String targetURL, File file, String username, String password) throws Exception {
String BOUNDRY = "==================================";
HttpURLConnection conn = null;
try {
// Make a connect to the server
URL url = new URL(targetURL);
conn = (HttpURLConnection) url.openConnection();
if (username != null) {
String usernamePassword = username + ":" + password;
//String encodedUsernamePassword = Base64.encodeBytes(usernamePassword.getBytes());
String encodedUsernamePassword = String.valueOf(Base64.encodeBase64(usernamePassword.getBytes()));
conn.setRequestProperty ("Authorization", "Basic " + encodedUsernamePassword);
}
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setUseCaches(false);
conn.setRequestMethod("POST");
conn.setRequestProperty("Connection", "Keep-Alive");
conn.setRequestProperty("Content-Type", "multipart/form-data;boundary="+BOUNDRY);
DataOutputStream dataOS = new DataOutputStream(conn.getOutputStream());
dataOS.writeBytes("--");
dataOS.writeBytes(BOUNDRY);
dataOS.writeBytes("\n");
dataOS.writeBytes("Content-Disposition: form-data; name=\"fileToUpload\"; fileName=\"" + file.getName() +"\"" + "\n");
dataOS.writeBytes("\n");
dataOS.writeBytes(new String(getBytesFromFile(file)));
dataOS.writeBytes("\n");
dataOS.writeBytes("--");
dataOS.writeBytes(BOUNDRY);
dataOS.writeBytes("--");
dataOS.writeBytes("\n");
dataOS.flush();
dataOS.close();
int responseCode = conn.getResponseCode();
if (responseCode != 200) {
throw new Exception(String.format("Received the response code %d from the URL %s", responseCode, url));
}
InputStream is = conn.getInputStream();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
byte[] bytes = new byte[4096];
int bytesRead;
while((bytesRead = is.read(bytes)) != -1) {
baos.write(bytes, 0, bytesRead);
}
byte[] bytesReceived = baos.toByteArray();
baos.close();
is.close();
String response = new String(bytesReceived);
} finally {
if (conn != null) {
conn.disconnect();
}
}
}
public static byte[] getBytesFromFile(File file) throws IOException {
InputStream is = new FileInputStream(file);
// Get the size of the file
long length = file.length();
// You cannot create an array using a long type.
// It needs to be an int type.
// Before converting to an int type, check
// to ensure that file is not larger than Integer.MAX_VALUE.
if (length > Integer.MAX_VALUE) {
// File is too large
}
// Create the byte array to hold the data
byte[] bytes = new byte[(int)length];
// Read in the bytes
int offset = 0;
int numRead = 0;
while (offset < bytes.length
&& (numRead = is.read(bytes, offset, Math.min(bytes.length - offset, 512*1024))) >= 0) {
offset += numRead;
}
// Ensure all the bytes have been read in
if (offset < bytes.length) {
throw new IOException("Could not completely read file "+file.getName());
}
// Close the input stream and return bytes
is.close();
return bytes;
}
And the bellow is my code in PHP:
$target = "/upload/";
$target = $target . basename( $_FILES['fileToUpload']['name']) ;
if(move_uploaded_file($_FILES['fileToUpload']['tmp_name'], $target)) {
echo "The file ". basename( $_FILES['fileToUpload']['name']). " has been uploaded";
$result['login'] = true;
}else {
$result['login']=false;
echo "Sorry, there was a problem uploading your file.";
}
$json = json_encode($result, JSON_PRETTY_PRINT);
print_r($json);

Answer 1

Maybe problem occur when you set Content-Type, try remove this
conn.setRequestProperty("Content-Type", "multipart/form-data;boundary="+BOUNDRY);