从android设备上传php服务器中的文件
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【中文标题】从android设备上传php服务器中的文件【英文标题】：Uploading file in php server from android device 【发布时间】：2014-10-13 10:13:48 【问题描述】：我正在尝试将文件从我的 android 设备上传到 php 服务器，但服务器没有收到任何文件。这是我的示例代码，我在网上找到的。 php服务器，我正在通过块上传文件
我的 Android 代码
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity implements OnClickListener
private TextView messageText;
private Button uploadButton, btnselectpic;
private ImageView imageview;
private int serverResponseCode = 0;
private ProgressDialog dialog = null;
private String upLoadServerUri = null;
private String imagepath=null;
@Override
public void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
uploadButton = (Button)findViewById(R.id.uploadButton);
messageText = (TextView)findViewById(R.id.messageText);
btnselectpic = (Button)findViewById(R.id.button_selectpic);
imageview = (ImageView)findViewById(R.id.imageView_pic);
btnselectpic.setOnClickListener(this);
uploadButton.setOnClickListener(this);
upLoadServerUri = "http://192.168.2.4/fileupload/UploadToServer.php";
@Override
public void onClick(View arg0)
if(arg0==btnselectpic)
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Complete action using"), 1);
else if (arg0==uploadButton)
dialog = ProgressDialog.show(MainActivity.this, "", "Uploading file...", true);
messageText.setText("uploading started.....");
new Thread(new Runnable()
public void run()
uploadFile(imagepath);
).start();
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
if (requestCode == 1 && resultCode == RESULT_OK)
//Bitmap photo = (Bitmap) data.getData().getPath();
Uri selectedImageUri = data.getData();
imagepath = getPath(selectedImageUri);
Bitmap bitmap=BitmapFactory.decodeFile(imagepath);
imageview.setImageBitmap(bitmap);
messageText.setText("Uploading file path:" +imagepath);
public String getPath(Uri uri)
String[] projection = MediaStore.Images.Media.DATA ;
Cursor cursor = managedQuery(uri, projection, null, null, null);
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
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);
runOnUiThread(new Runnable()
public void run()
messageText.setText("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("file", fileName);
dos = new DataOutputStream(conn.getOutputStream());
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"file\";file\""
+ 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()
String msg = "File Upload Completed.\n\n See uploaded file here : \n\n"
+" c:/xamp/htdocs/file upload/uploads";
messageText.setText(msg);
Toast.makeText(MainActivity.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()
messageText.setText("MalformedURLException Exception : check script url.");
Toast.makeText(MainActivity.this, "MalformedURLException", Toast.LENGTH_SHORT).show();
);
Log.e("Upload file to server", "error: " + ex.getMessage(), ex);
catch (Exception e)
dialog.dismiss();
e.printStackTrace();
runOnUiThread(new Runnable()
public void run()
messageText.setText("Got Exception : see logcat ");
Toast.makeText(MainActivity.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
PHP 服务器代码 在文件上传中，我通过块完成文件上传，请任何人帮我发送正确的代码文件上传通过块和相关的android文件上传代码
<?php
if (empty($_FILES) || $_FILES['file']['error'])
die('"OK": 0, "info": "Failed to move uploaded file."');
$chunk = isset($_REQUEST["chunk"]) ? intval($_REQUEST["chunk"]) : 0;
$chunks = isset($_REQUEST["chunks"]) ? intval($_REQUEST["chunks"]) : 0;
$fileName = isset($_REQUEST["name"]) ? $_REQUEST["name"] : $_FILES["file"]["name"];
$filePath = "uploads/$fileName";
// Open temp file
$out = @fopen("$filePath.part", $chunk == 0 ? "wb" : "ab");
//$out2 = @fopen("$filePath.part2", $chunk == 0 ? "wb" : "ab");
if ($out)
// Read binary input stream and append it to temp file
$in = @fopen($_FILES['file']['tmp_name'], "rb");
if ($in)
while ($buff = fread($in, 4096))
fwrite($out, $buff);
//print($out);
// echo sizeof($out);
else
die('"OK": 0, "info": "Failed to open input stream."');
@fclose($in);
@fclose($out);
@unlink($_FILES['file']['tmp_name']);
else
die('"OK": 0, "info": "Failed to open output stream."');
// Check if file has been uploaded
if (!$chunks || $chunk == $chunks - 1)
// Strip the temp .part suffix off
rename("$filePath.part", $filePath);
die('"OK": 1, "info": "Upload successful."');?>
【问题讨论】：
您可以使用 FTP 并借助 API (AsyncHttpResponseHandler) 上传文件 ***.com/questions/22138881/… 【参考方案1】：我不知道您的代码，但为您提供了两个工作代码： 这适用于所有类型的文件。我将它用于图像、音频和视频文件。
安卓：
new UploadFileAsync().execute("");
private class UploadFileAsync extends AsyncTask<String, Void, String>
@Override
protected String doInBackground(String... params)
try
String sourceFileUri = "/mnt/sdcard/abc.png";
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())
try
String upLoadServerUri = "http://website.com/abc.php?";
// 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("bill", sourceFileUri);
dos = new DataOutputStream(conn.getOutputStream());
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"bill\";filename=\""
+ sourceFileUri + "\"" + 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();
if (serverResponseCode == 200)
// messageText.setText(msg);
//Toast.makeText(ctx, "File Upload Complete.",
// Toast.LENGTH_SHORT).show();
// recursiveDelete(mDirectory1);
// close the streams //
fileInputStream.close();
dos.flush();
dos.close();
catch (Exception e)
// dialog.dismiss();
e.printStackTrace();
// dialog.dismiss();
// End else block
catch (Exception ex)
// dialog.dismiss();
ex.printStackTrace();
return "Executed";
@Override
protected void onPostExecute(String result)
@Override
protected void onPreExecute()
@Override
protected void onProgressUpdate(Void... values)
PHP::
<?php
if (is_uploaded_file($_FILES['bill']['tmp_name']))
$uploads_dir = './';
$tmp_name = $_FILES['bill']['tmp_name'];
$pic_name = $_FILES['bill']['name'];
move_uploaded_file($tmp_name, $uploads_dir.$pic_name);
else
echo "File not uploaded successfully.";
?>
【讨论】：
@Purushotamrawat 上传没有文件大小限制取决于您的托管服务提供商。 我有一个疑问。如果可以像上面那样直接使用 HTTP 上传，那么为什么有些博客使用了 volley 或改造库。这些方法有什么区别？【参考方案2】：试试这个：它是 100% 的工作副本。
上传函数：（函数的参数是imagePath）
public void uploadFile(String sourceFileUri)
String fileName = imagePath;
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(imagePath);
if (!sourceFile.isFile())
if (dialog != null && dialog.isShowing())
dialog.dismiss();
Log.e("uploadFile", "Source File not exist :"+imagePath);
else
try
// open a URL connection to the Servlet
FileInputStream fileInputStream = new FileInputStream(sourceFile);
URL url = new URL(Upload_Image_URL);
// 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("uploaded_file", fileName);
dos = new DataOutputStream(conn.getOutputStream());
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);
//close the streams //
fileInputStream.close();
dos.flush();
dos.close();
catch (MalformedURLException ex)
if (dialog != null && dialog.isShowing())
dialog.dismiss();
ex.printStackTrace();
Log.e("Upload file to server", "error: " + ex.getMessage(), ex);
catch (Exception e)
if (dialog != null && dialog.isShowing())
dialog.dismiss();
e.printStackTrace();
if (dialog != null && dialog.isShowing())
dialog.dismiss();
// End else block
PHP 服务：
$file_path = "images/";
$file_path = $file_path . basename( $_FILES['uploaded_file']['name']);
if(move_uploaded_file($_FILES['uploaded_file']['tmp_name'], $file_path))
echo "success";
else echo "fail";
必须在服务器中创建一个名为“images”的文件夹，这样 $file_path 才有效
【讨论】：
String serverResponseMessage = conn.getResponseMessage();【参考方案3】：如果您使用免费托管，则页面将被重定向以跟踪编号。点击数。您可能会收到 Http Response :200 OK 但您不会看到文件上传，因为文件丢失了。
我自己浪费了 3 天时间寻找解决方案，但一无所获。这是我自己想出来的。
【讨论】：
【参考方案4】：完整的工作代码 .... 带有 PHP 代码
public class MainActivity extends AppCompatActivity implements View.OnClickListener
private static final int PICK_FILE_REQUEST = 1;
private static final String TAG = MainActivity.class.getSimpleName();
private String selectedFilePath;
private String SERVER_URL = "http://Ip Address/a.php";
ImageView ivAttachment;
Button bUpload;
TextView tvFileName;
ProgressDialog dialog;
@Override
protected void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ivAttachment = (ImageView) findViewById(R.id.ivAttachment);
bUpload = (Button) findViewById(R.id.b_upload);
tvFileName = (TextView) findViewById(R.id.tv_file_name);
ivAttachment.setOnClickListener(this);
bUpload.setOnClickListener(this);
@Override
public void onClick(View v)
if(v== ivAttachment)
//on attachment icon click
showFileChooser();
if(v== bUpload)
//on upload button Click
if(selectedFilePath != null)
dialog = ProgressDialog.show(MainActivity.this,"","Uploading File...",true);
new Thread(new Runnable()
@Override
public void run()
//creating new thread to handle Http Operations
uploadFile(selectedFilePath);
).start();
else
Toast.makeText(MainActivity.this,"Please choose a File First",Toast.LENGTH_SHORT).show();
private void showFileChooser()
Intent intent = new Intent();
//sets the select file to all types of files
intent.setType("*/*");
//allows to select data and return it
intent.setAction(Intent.ACTION_GET_CONTENT);
//starts new activity to select file and return data
startActivityForResult(Intent.createChooser(intent,"Choose File to Upload.."),PICK_FILE_REQUEST);
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
super.onActivityResult(requestCode, resultCode, data);
if(resultCode == Activity.RESULT_OK)
if(requestCode == PICK_FILE_REQUEST)
if(data == null)
//no data present
return;
Uri selectedFileUri = data.getData();
selectedFilePath = FilePath.getPath(this,selectedFileUri);
Log.i(TAG,"Selected File Path:" + selectedFilePath);
if(selectedFilePath != null && !selectedFilePath.equals(""))
tvFileName.setText(selectedFilePath);
else
Toast.makeText(this,"Cannot upload file to server",Toast.LENGTH_SHORT).show();
//android upload file to server
public int uploadFile(final String selectedFilePath)
int serverResponseCode = 0;
HttpURLConnection connection;
DataOutputStream dataOutputStream;
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
int bytesRead,bytesAvailable,bufferSize;
byte[] buffer;
int maxBufferSize = 1 * 1024 * 1024;
File selectedFile = new File(selectedFilePath);
String[] parts = selectedFilePath.split("/");
final String fileName = parts[parts.length-1];
if (!selectedFile.isFile())
dialog.dismiss();
runOnUiThread(new Runnable()
@Override
public void run()
tvFileName.setText("Source File Doesn't Exist: " + selectedFilePath);
);
return 0;
else
try
FileInputStream fileInputStream = new FileInputStream(selectedFile);
URL url = new URL(SERVER_URL);
connection = (HttpURLConnection) url.openConnection();
connection.setDoInput(true);//Allow Inputs
connection.setDoOutput(true);//Allow Outputs
connection.setUseCaches(false);//Don't use a cached Copy
connection.setRequestMethod("POST");
connection.setRequestProperty("Connection", "Keep-Alive");
connection.setRequestProperty("ENCTYPE", "multipart/form-data");
connection.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);
connection.setRequestProperty("uploaded_file",selectedFilePath);
//creating new dataoutputstream
dataOutputStream = new DataOutputStream(connection.getOutputStream());
//writing bytes to data outputstream
dataOutputStream.writeBytes(twoHyphens + boundary + lineEnd);
dataOutputStream.writeBytes("Content-Disposition: form-data; name=\"uploaded_file\";filename=\""
+ selectedFilePath + "\"" + lineEnd);
dataOutputStream.writeBytes(lineEnd);
//returns no. of bytes present in fileInputStream
bytesAvailable = fileInputStream.available();
//selecting the buffer size as minimum of available bytes or 1 MB
bufferSize = Math.min(bytesAvailable,maxBufferSize);
//setting the buffer as byte array of size of bufferSize
buffer = new byte[bufferSize];
//reads bytes from FileInputStream(from 0th index of buffer to buffersize)
bytesRead = fileInputStream.read(buffer,0,bufferSize);
//loop repeats till bytesRead = -1, i.e., no bytes are left to read
while (bytesRead > 0)
//write the bytes read from inputstream
dataOutputStream.write(buffer,0,bufferSize);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable,maxBufferSize);
bytesRead = fileInputStream.read(buffer,0,bufferSize);
dataOutputStream.writeBytes(lineEnd);
dataOutputStream.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
serverResponseCode = connection.getResponseCode();
String serverResponseMessage = connection.getResponseMessage();
Log.i(TAG, "Server Response is: " + serverResponseMessage + ": " + serverResponseCode);
//response code of 200 indicates the server status OK
if(serverResponseCode == 200)
runOnUiThread(new Runnable()
@Override
public void run()
tvFileName.setText("File Upload completed.\n\n You can see the uploaded file here: \n\n" + "http://coderefer.com/extras/uploads/"+ fileName);
);
//closing the input and output streams
fileInputStream.close();
dataOutputStream.flush();
dataOutputStream.close();
catch (FileNotFoundException e)
e.printStackTrace();
runOnUiThread(new Runnable()
@Override
public void run()
Toast.makeText(MainActivity.this,"File Not Found",Toast.LENGTH_SHORT).show();
);
catch (MalformedURLException e)
e.printStackTrace();
Toast.makeText(MainActivity.this, "URL error!", Toast.LENGTH_SHORT).show();
catch (IOException e)
e.printStackTrace();
Toast.makeText(MainActivity.this, "Cannot Read/Write File!", Toast.LENGTH_SHORT).show();
dialog.dismiss();
return serverResponseCode;
添加 FilePath.cs
public class FilePath
public static String getPath(final Context context, final Uri uri)
// check here to KITKAT or new version
final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
// DocumentProvider
if (isKitKat && DocumentsContract.isDocumentUri(context, uri))
// ExternalStorageProvider
if (isExternalStorageDocument(uri))
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];
if ("primary".equalsIgnoreCase(type))
return Environment.getExternalStorageDirectory() + "/"
+ split[1];
// DownloadsProvider
else if (isDownloadsDocument(uri))
final String id = DocumentsContract.getDocumentId(uri);
final Uri contentUri = ContentUris.withAppendedId(
Uri.parse("content://downloads/public_downloads"),
Long.valueOf(id));
return getDataColumn(context, contentUri, null, null);
// MediaProvider
else if (isMediaDocument(uri))
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];
Uri contentUri = null;
if ("image".equals(type))
contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
else if ("video".equals(type))
contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
else if ("audio".equals(type))
contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
final String selection = "_id=?";
final String[] selectionArgs = new String[] split[1] ;
return getDataColumn(context, contentUri, selection,
selectionArgs);
// MediaStore (and general)
else if ("content".equalsIgnoreCase(uri.getScheme()))
// Return the remote address
if (isGooglePhotosUri(uri))
return uri.getLastPathSegment();
return getDataColumn(context, uri, null, null);
// File
else if ("file".equalsIgnoreCase(uri.getScheme()))
return uri.getPath();
return null;
/**
* Get the value of the data column for this Uri. This is useful for
* MediaStore Uris, and other file-based ContentProviders.
*
* @param context
* The context.
* @param uri
* The Uri to query.
* @param selection
* (Optional) Filter used in the query.
* @param selectionArgs
* (Optional) Selection arguments used in the query.
* @return The value of the _data column, which is typically a file path.
*/
public static String getDataColumn(Context context, Uri uri,
String selection, String[] selectionArgs)
Cursor cursor = null;
final String column = "_data";
final String[] projection = column ;
try
cursor = context.getContentResolver().query(uri, projection,
selection, selectionArgs, null);
if (cursor != null && cursor.moveToFirst())
final int index = cursor.getColumnIndexOrThrow(column);
return cursor.getString(index);
finally
if (cursor != null)
cursor.close();
return null;
/**
* @param uri
* The Uri to check.
* @return Whether the Uri authority is ExternalStorageProvider.
*/
public static boolean isExternalStorageDocument(Uri uri)
return "com.android.externalstorage.documents".equals(uri
.getAuthority());
/**
* @param uri
* The Uri to check.
* @return Whether the Uri authority is DownloadsProvider.
*/
public static boolean isDownloadsDocument(Uri uri)
return "com.android.providers.downloads.documents".equals(uri
.getAuthority());
/**
* @param uri
* The Uri to check.
* @return Whether the Uri authority is MediaProvider.
*/
public static boolean isMediaDocument(Uri uri)
return "com.android.providers.media.documents".equals(uri
.getAuthority());
/**
* @param uri
* The Uri to check.
* @return Whether the Uri authority is Google Photos.
*/
public static boolean isGooglePhotosUri(Uri uri)
return "com.google.android.apps.photos.content".equals(uri
.getAuthority());
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_
android:layout_
android:background="@color/colorAccent">
<TextView
android:layout_
android:layout_
android:gravity="center"
android:textSize="18sp"
android:id="@+id/tvHeading"
android:text="Touch the icon below to upload file to server"
android:textColor="#fff"
android:textStyle="bold"/>
<ImageView
android:id="@+id/ivAttachment"
android:layout_
android:layout_
android:src="@android:drawable/ic_menu_camera"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true"/>
<TextView
android:id="@+id/tv_file_name"
android:layout_
android:layout_
android:textColor="#fff"
android:layout_marginTop="10dp"
android:gravity="center"
android:layout_below="@+id/ivAttachment"
android:layout_centerHorizontal="true"/>
<Button
android:layout_
android:layout_
android:id="@+id/b_upload"
android:text="Upload"
android:textStyle="bold"
android:textSize="20sp"
android:layout_alignParentBottom="true"
android:gravity="center"
android:textColor="#fff"
android:background="#039be5"/>
</RelativeLayout>
php 文件 a.php
<?php
if (isset($_FILES["uploaded_file"]["name"]))
$name = $_FILES["uploaded_file"]["name"];
$tmp_name = $_FILES['uploaded_file']['tmp_name'];
$error = $_FILES['uploaded_file']['error'];
if (!empty($name))
$location = './fileload/';
if ( ! is_dir($location))
mkdir($location);
if (move_uploaded_file($tmp_name, $location.$name))
echo 'Uploaded';
else
echo 'please choose a file';
?>
为文件加载文件夹添加读/写权限
用 fiddler 用下面的代码测试过
User-Agent: Fiddler
Content-Type: multipart/form-data;boundary=*****
uploaded_file: C:\Desktop\oldScreen.png
Content-Disposition: form-data;
name="uploaded_file";filename="C:\\Desktop\oldScreen.png"
Content-Length: 0
【讨论】：
【参考方案5】：php 文件
<?php
if (is_uploaded_file($_FILES['bill']['tmp_name']))
$uploads_dir = 'Uploads/staff_documents/';
$tmp_name = $_FILES['bill']['tmp_name'];
$pic_name = $_FILES['bill']['name'];
echo $pic_name;
move_uploaded_file($tmp_name, $uploads_dir.$pic_name);
else
echo "File not uploaded successfully.";
?>
它支持所有文件 要从安卓设备上传文档，您可以使用https://github.com/gotev/android-upload-service 因为它也提供通知支持
Android Java 部分
new MultipartUploadRequest(getApplicationContext(), uploadId, "Your server
url")
.addFileToUpload(filePathURI + "","bill")
//Adding file
.setNotificationConfig(new UploadNotificationConfig())
.setMaxRetries(2)
.startUpload();
【讨论】：
【参考方案6】：这些示例在 nginx+HyperfastCGI+Mono 上给出错误。要消除错误，您需要在分号后放置一个空格。
conn.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + boundary);
也许有人会需要这些信息。
【讨论】：
【参考方案7】：那些正在寻找 Kotlin 解决方案的人可以使用这个实用程序类。这是我写的关于这个主题的详细文章。它使用 OKHTTP3。 Upload File to Server in Android Kotlin
package com.mvp.handyopinion
import android.app.Activity
import android.app.ProgressDialog
import android.net.Uri
import android.util.Log
import android.webkit.MimeTypeMap
import android.widget.Toast
import okhttp3.*
import okhttp3.MediaType.Companion.toMediaTypeOrNull
import okhttp3.RequestBody.Companion.asRequestBody
import java.io.File
class UploadUtility(activity: Activity)
var activity = activity;
var dialog: ProgressDialog? = null
var serverURL: String = "https://handyopinion.com/tutorials/UploadToServer.php"
var serverUploadDirectoryPath: String = "https://handyopinion.com/tutorials/uploads/"
val client = OkHttpClient()
fun uploadFile(sourceFilePath: String, uploadedFileName: String? = null)
uploadFile(File(sourceFilePath), uploadedFileName)
fun uploadFile(sourceFileUri: Uri, uploadedFileName: String? = null)
val pathFromUri = URIPathHelper().getPath(activity,sourceFileUri)
uploadFile(File(pathFromUri), uploadedFileName)
fun uploadFile(sourceFile: File, uploadedFileName: String? = null)
Thread
val mimeType = getMimeType(sourceFile);
if (mimeType == null)
Log.e("file error", "Not able to get mime type")
return@Thread
val fileName: String = if (uploadedFileName == null) sourceFile.name else uploadedFileName
toggleProgressDialog(true)
try
val requestBody: RequestBody =
MultipartBody.Builder().setType(MultipartBody.FORM)
.addFormDataPart("uploaded_file", fileName,sourceFile.asRequestBody(mimeType.toMediaTypeOrNull()))
.build()
val request: Request = Request.Builder().url(serverURL).post(requestBody).build()
val response: Response = client.newCall(request).execute()
if (response.isSuccessful)
Log.d("File upload","success, path: $serverUploadDirectoryPath$fileName")
showToast("File uploaded successfully at $serverUploadDirectoryPath$fileName")
else
Log.e("File upload", "failed")
showToast("File uploading failed")
catch (ex: Exception)
ex.printStackTrace()
Log.e("File upload", "failed")
showToast("File uploading failed")
toggleProgressDialog(false)
.start()
// url = file path or whatever suitable URL you want.
fun getMimeType(file: File): String?
var type: String? = null
val extension = MimeTypeMap.getFileExtensionFromUrl(file.path)
if (extension != null)
type = MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension)
return type
fun showToast(message: String)
activity.runOnUiThread
Toast.makeText( activity, message, Toast.LENGTH_LONG ).show()
fun toggleProgressDialog(show: Boolean)
activity.runOnUiThread
if (show)
dialog = ProgressDialog.show(activity, "", "Uploading file...", true);
else
dialog?.dismiss();
【讨论】：
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