我正在开发一个应用程序，用于将文件从Android应用程序上传到Laravel Server，无法获取上传文件的具体方法 . 当我在Postman上测试它完美无缺，但是通过Android它没有工作下面我附上了Laravel代码：
public function uploadFileApp(Request $request){
$response = array();
$results = array();
if($request->hasFile('uploaded_file')){
$file = $request->file('uploaded_file');
$file_size = $file->getSize();
$file_extension = $file->getClientOriginalExtension();
$max_id = IndexScan::max('id');
$tst_id = str_pad($max_id+ 1, 8, '0', STR_PAD_LEFT);
$transaction_id = 'M-'.$tst_id;
$new_file_name = $transaction_id.".".$file_extension;
$destination_path = public_path('/images/files');
chmod($destination_path,0777);
$file->move($destination_path,$new_file_name);
$FileUpload = new FileUpload;
$FileUpload->file_name = $new_file_name;
$FileUpload->file_size = $file_size;
$FileUpload->transaction_id = $transaction_id;
$FileUpload->uploaded_by = $request->input("email");
$FileUpload->save();
$get_user_id = User::where(['email' => $request->input("email")])->first();
$IndexScan = new IndexScan;
$IndexScan->transaction_id = $transaction_id;
$IndexScan->status = 'Scanned';
$IndexScan->scanned_by = $get_user_id->id;
$IndexScan->to_be_indexed_by = $get_user_id->id;
$IndexScan->status = 'Scanned';
$IndexScan->source = 'Mobile App';
$IndexScan->ip_address = request()->ip();
$IndexScan->save();
$response["success"] = 1;
$response["transaction_id"] = $transaction_id;
$results["results"] = $response;
} else {
$response["success"] = 0;
$response["transaction_id"] = "0000000000";
$results["results"] = $response;
}
return response()->json($results);
}
这是Android代码：
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.Bitmap;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.os.StrictMode;
import android.provider.MediaStore;
import android.support.annotation.Nullable;
import android.support.design.widget.FloatingActionButton;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Toast;
import com.scanlibrary.PickImageFragment;
import com.scanlibrary.ScanActivity;
import com.scanlibrary.ScanConstants;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import static android.content.Context.MODE_PRIVATE;
import static com.mazelon.invoiceassistant.Constants.Constants.BASE_URL;
import static com.mazelon.invoiceassistant.Constants.Constants.SharedPrefName;
public class MyInvoices extends Fragment {
FloatingActionButton fab_add;
private static final int REQUEST_CODE = 99;
private ProgressDialog pDialog;
File file;
String upload_url = BASE_URL+"uploadFileApp";
String tst_id = "";
public MyInvoices(){}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.my_invoices, container, false);
StrictMode.ThreadPolicy policy = new
StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
return view;
}
@Override
public void onViewCreated(final View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
fab_add = (FloatingActionButton) view.findViewById(R.id.fab_add);
if (!isOnline(getActivity()))
{
Toast.makeText(getActivity(), "No network connection", Toast.LENGTH_LONG).show();
return;
}
fab_add.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startScan(ScanConstants.OPEN_CAMERA);
}
});
}
private boolean isOnline(Context mContext) {
ConnectivityManager cm = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo netInfo = cm.getActiveNetworkInfo();
if (netInfo != null && netInfo.isConnectedOrConnecting())
{
return true;
}
return false;
}
protected void startScan(int preference) {
Intent intent = new Intent(getContext(), ScanActivity.class);
intent.putExtra(ScanConstants.OPEN_INTENT_PREFERENCE, preference);
startActivityForResult(intent, REQUEST_CODE);
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == REQUEST_CODE && resultCode == Activity.RESULT_OK) {
Uri uri = data.getExtras().getParcelable(ScanConstants.SCANNED_RESULT);
String file_nm = "";
Bitmap bitmap = null;
String email = "";
try {
String root = String.valueOf(Environment.getExternalStorageDirectory());
bitmap = MediaStore.Images.Media.getBitmap(getActivity().getContentResolver(), uri);
file_nm = PickImageFragment.file_name;
SharedPreferences sp = getActivity().getSharedPreferences(SharedPrefName, MODE_PRIVATE);
email = sp.getString("email","");
} catch (IOException e) {
e.printStackTrace();
}
uploadFile(upload_url,email,file_nm);
}
}
public void uploadFile(final String urlString, String vTitle, String filenm) {
URL connectURL = null;
String Title = null;
String fileName = null;
int serverResponseCode = 0;
try{
connectURL = new URL(urlString);
Title= vTitle;
fileName = filenm;
}catch(Exception ex){
Log.i("HttpFileUpload","URL Malformatted");
}
HttpURLConnection conn = null;
DataOutputStream dos = null;
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
int bytesRead, bytesAvailable, bufferSize;
byte[] buffer;
int maxBufferSize = 1024 * 1024 * 1024;
File sourceFile = new File(Environment.getExternalStorageDirectory(), "/doc_flux" + "/" + fileName);
if (!sourceFile.isFile()) {
Log.e("uploadFile", "Source File not exist :" + fileName);
}
else {
try {
Log.e("url", String.valueOf(connectURL));
Log.e("email", Title);
Log.e("file_name", fileName);
// open a URL connection to the Servlet
FileInputStream fileInputStream = new FileInputStream(sourceFile);
// Open a HTTP connection to the URL
conn = (HttpURLConnection) connectURL.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("uploaded_file", fileName);
dos = new DataOutputStream(conn.getOutputStream());
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"email\"" + lineEnd);
dos.writeBytes(lineEnd);
dos.writeBytes(Title);
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"uploaded_file\";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) {
final HttpURLConnection finalConn = conn;
getActivity().runOnUiThread(new Runnable() {
public void run() {
BufferedReader in = null;
StringBuffer response = null;
try {
in = new BufferedReader(
new InputStreamReader(finalConn.getInputStream()));
String inputLine;
response = new StringBuffer();
while ((inputLine = in.readLine()) != null) {
response.append(inputLine);
}
in.close();
Log.e("jsonreply",response.toString());
} catch (IOException e) {
e.printStackTrace();
}
try {
JSONObject mainObject = new JSONObject(response.toString());
JSONObject uniObject = mainObject.getJSONObject("results");
tst_id = uniObject.getString("transaction_id");
} catch (JSONException e) {
e.printStackTrace();
}
String msg = "File Upload Completed.";
Toast.makeText(getActivity(), msg,
Toast.LENGTH_SHORT).show();
}
});
Intent intent = new Intent(getActivity(), UploadSuccess.class);
intent.putExtra("transaction_id",tst_id);
startActivity(intent);
}
//close the streams //
fileInputStream.close();
dos.flush();
dos.close();
} catch (MalformedURLException ex) {
if(pDialog!=null) {
pDialog.dismiss();
}
ex.printStackTrace();
getActivity().runOnUiThread(new Runnable() {
public void run() {
Toast.makeText(getActivity(), "MalformedURLException",
Toast.LENGTH_SHORT).show();
}
});
Log.e("Upload file to server", "error: " + ex.getMessage(), ex);
} catch (Exception e) {
if(pDialog!=null) {
pDialog.dismiss();
}
e.printStackTrace();
getActivity().runOnUiThread(new Runnable() {
public void run() {
Toast.makeText(getActivity(), "Got Exception : see logcat ",
Toast.LENGTH_SHORT).show();
}
});
Log.e("Upload server Exception", "Exception : "
+ e.getMessage(), e);
}
if(pDialog!=null) {
pDialog.dismiss();
}
}
}
}
当我使用从邮递员访问上面的Laravel API服务我的图像上传（我的意思是它通过if（$ request-> hasFile（'uploaded_file'）），但是当我尝试通过上面的android代码时，它是不工作（我的意思是它正在进入else语句） .
1 回答
找到答案，我在这里添加代码
Laravel：
Android：