我想将我的Android应用程序中的图像上传到服务器。我使用了这段代码（code）。
问题是图像已成功上传到我的数据库，但没有上传到文件夹。
这是我的服务器代码（codeigniter）：
private function do_upload(){
$type = explode('.', $_FILES["image_user"]["name"]);
print_r($type);
$type = strtolower($type[count($type)-1]);
$img=uniqid(rand()).'.'.$type;
$url = "./images/".uniqid(rand()).'.'.$type;
if(in_array($type, array("jpg", "jpeg", "gif", "png")))
if(is_uploaded_file($_FILES["image_user"]["tmp_name"]))
if(move_uploaded_file($_FILES["image_user"]["tmp_name"],$url))
return $img;
return "";
}
public function update_image_post(){
$username = $this->get('username');
$url = $this->do_upload();
$this->Users_model->update_image($username, $url);
}
这是android代码：
public class Image extends Activity {
private static final int REQUEST_IMAGE = 100;
ImageView preview;
File destination;
String imagePath;
Button takePhoto;
Button btnCreate;
int serverResponseCode = 0;
ProgressDialog dialog = null;
String upLoadServerUri = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.image_main);
preview = (ImageView) findViewById(R.id.uploadImage);
takePhoto = (Button) findViewById(R.id.selectImageButton);
btnCreate = (Button) findViewById(R.id.uploadButton) ;
preview.setVisibility(View.GONE);
upLoadServerUri = "http://myserver/api/users/update_image/username/mimi/";
String name = dateToString(new Date(),"yyyy-MM-dd-hh-mm-ss");
destination = new File(Environment.getExternalStorageDirectory(), name + ".jpg");
takePhoto.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(destination));
startActivityForResult(intent, REQUEST_IMAGE);
}
});
btnCreate.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
dialog = ProgressDialog.show(Image.this, "", "Uploading file...", true);
new Thread(new Runnable() {
public void run() {
uploadFile(imagePath);
}
}).start();
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if( requestCode == REQUEST_IMAGE && resultCode == Activity.RESULT_OK ){
try {
preview.setVisibility(View.VISIBLE);
takePhoto.setVisibility(View.GONE);
FileInputStream in = new FileInputStream(destination);
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 10;
imagePath = destination.getAbsolutePath();
Log.d("INFO", "PATH === " + imagePath);
//tvPath.setText(imagePath);
Bitmap bmp = BitmapFactory.decodeStream(in, null, options);
preview.setImageBitmap(bmp);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
}
}
public String dateToString(Date date, String format) {
SimpleDateFormat df = new SimpleDateFormat(format);
return df.format(date);
}
public int uploadFile(String sourceFileUri) {
String fileName = sourceFileUri;
HttpURLConnection conn = null;
DataOutputStream dos = null;
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
int bytesRead, bytesAvailable, bufferSize;
byte[] buffer;
int maxBufferSize = 1 * 1024 * 1024;
File sourceFile = new File(sourceFileUri);
if (!sourceFile.isFile()) {
dialog.dismiss();
Log.e("uploadFile", "Source File not exist :" +imagePath);
return 0;
}
else
{
try {
// open a URL connection to the Servlet
FileInputStream fileInputStream = new FileInputStream(sourceFile);
URL url = new URL(upLoadServerUri);
// Open a HTTP connection to the URL
conn = (HttpURLConnection) url.openConnection();
conn.setDoInput(true); // Allow Inputs
conn.setDoOutput(true); // Allow Outputs
conn.setUseCaches(false); // Don't use a Cached Copy
conn.setRequestMethod("POST");
conn.setRequestProperty("Connection", "Keep-Alive");
conn.setRequestProperty("ENCTYPE", "multipart/form-data");
conn.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);
conn.setRequestProperty("image_user", fileName);
dos = new DataOutputStream(conn.getOutputStream());
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"image_user\";filename="+ fileName + "" + lineEnd);
dos.writeBytes(lineEnd);
// create a buffer of maximum size
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
buffer = new byte[bufferSize];
// read file and write it into form...
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
while (bytesRead > 0) {
dos.write(buffer, 0, bufferSize);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
}
// send multipart form data necesssary after file data...
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
// Responses from the server (code and message)
serverResponseCode = conn.getResponseCode();
String serverResponseMessage = conn.getResponseMessage();
Log.i("uploadFile", "HTTP Response is : "+ serverResponseMessage + ": " + serverResponseCode);
if(serverResponseCode == 200){
runOnUiThread(new Runnable() {
public void run() {
Toast.makeText(Image.this, "File Upload Complete.", Toast.LENGTH_SHORT).show();
}
});
}
//close the streams //
fileInputStream.close();
dos.flush();
dos.close();
} catch (MalformedURLException ex) {
dialog.dismiss();
ex.printStackTrace();
runOnUiThread(new Runnable() {
public void run() {
}
});
Log.e("Upload file to server", "error: " + ex.getMessage(), ex);
} catch (Exception e) {
dialog.dismiss();
e.printStackTrace();
runOnUiThread(new Runnable() {
public void run() {
Toast.makeText(Image.this, "Got Exception : see logcat ",Toast.LENGTH_SHORT).show();
}
});
Log.e("Upload file to server Exception", "Exception : "
+ e.getMessage(), e);
}
dialog.dismiss();
return serverResponseCode;
} // End else block
}
我将文件夹权限更改为777，但它无法正常工作。