public class UploadProfilePicActivity extends Activity implements View.OnClickListener {
ImageView imageView;
Button btnUploadPic;
Button btnskipUploadPic;
Button btnSaveNContinue;
private static int RESULT_LOAD_IMAGE = 1;
String imagepath = null;
ProgressDialog dialog = null;
String url_profilePic;
private int serverResponseCode;
String api = "http://192.168.2.17:8000/api/v1/";
String format = "/?format=json";
AlmabayDatabase almabayDatabase;
String encodedString;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_uploadprofilepic);
imageView = (ImageView) findViewById(R.id.imageView);
btnUploadPic = (Button) findViewById(R.id.btnUploadPic);
btnskipUploadPic = (Button) findViewById(R.id.btnSkipUploadPic);
btnSaveNContinue = (Button) findViewById(R.id.btnSaveNContinue);
btnUploadPic.setOnClickListener(this);
btnSaveNContinue.setOnClickListener(this);
url_profilePic = api + "user-media" + format;
almabayDatabase = new AlmabayDatabase(this);
}
@Override
public void onClick(View v) {
if (v == btnUploadPic) {
Intent i = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(i, RESULT_LOAD_IMAGE);
} else if (v == btnSaveNContinue) {
dialog = ProgressDialog.show(UploadProfilePicActivity.this, "", "Uploading file...", true);
// messageText.setText("uploading started.....");
new Thread(new Runnable() {
public void run() {
Log.e("ImagePathTest", imagepath);
uploadFile(imagepath);
}
}).start();
}
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK) {
Uri selectedImageUri = data.getData();
imagepath = getPath(selectedImageUri);
Bitmap bitmap = BitmapFactory.decodeFile(imagepath);
imageView.setImageBitmap(bitmap);
Log.e("Uploading", "Uploading File :" + imagepath);
}
}
public String getPath(Uri uri) {
String[] projection = {MediaStore.Images.Media.DATA};
Cursor cursor = getContentResolver().query(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 imagepath) {
String fileName = imagepath;
Log.e("File Name", fileName);
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(fileName);
int pk = almabayDatabase.getUserID();
if (!sourceFile.isFile()) {
dialog.dismiss();
Log.e("uploadFile", "Source File not exist :" + imagepath);
runOnUiThread(new Runnable() {
public void run() {
Log.e("Sourcefile", "File doesn't exist");
}
});
return 0;
} else {
try {
// open a URL connection to the Servlet
FileInputStream fileInputStream = new FileInputStream(sourceFile);
URL url = new URL(url_profilePic);
// 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("name", fileName);
// conn.setRequestProperty("timeline_id", String.valueOf(pk));
dos = new DataOutputStream(conn.getOutputStream());
//Send Image
Log.e("Sending","Sending Image");
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"name\";filename=\"" + fileName + "\"" + lineEnd);
dos.writeBytes(lineEnd);
// add parameter timeline_id
String timeline_id = String.valueOf(pk);
Log.e("Sending","Sending PK");
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"timeline_id\"" + lineEnd);
dos.writeBytes(lineEnd);
// assign value
dos.writeBytes(timeline_id);
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + 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();
Log.e("ResponseCode", String.valueOf(serverResponseCode));
String serverResponseMessage = conn.getResponseMessage();
Log.i("uploadFile", "HTTP Response is : "
+ serverResponseMessage + ": " + serverResponseCode);
if (serverResponseCode == 200) {
runOnUiThread(new Runnable() {
public void run() {
Toast.makeText(UploadProfilePicActivity.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(UploadProfilePicActivity.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(UploadProfilePicActivity.this, "Got Exception : see logcat ", Toast.LENGTH_SHORT).show();
}
});
Log.e("Upload file failed", "Exception : " + e.getMessage(), e);
}
dialog.dismiss();
return serverResponseCode;
} // End else block
}
}
在这段代码中，我试图将图像与timeline_id一起发送到服务器.timeline_id包含值pk，它是存储在数据库中的用户的主键。我无法使用timeline_id发送图像。我不能知道实际问题在哪里。请帮我解决问题。
答案 0 :(得分：5)
您可以使用下面的类简单地将文件部分与文本部分放在一起。
String charset = "UTF-8";
String requestURL = BASE_URL + "userregistration";
MultipartUtility multipart = new MultipartUtility(requestURL, charset);
multipart.addFormField("username", userJid);
multipart.addFilePart("image", imageBitmap);//ima
String response = multipart.finish();
Log.d("SERVER REPLIED", response);
您可以创建一个MultipartUtility类，如下所示 -
public class MultipartUtility {
private final String boundary;
private static final String LINE_FEED = "\r\n";
private HttpURLConnection httpConn;
private String charset;
private OutputStream outputStream;
private PrintWriter writer;
/**
* This constructor initializes a new HTTP POST request with content type
* is set to multipart/form-data
*
* @param requestURL
* @param charset
* @throws IOException
*/
public MultipartUtility(String requestURL, String charset)
throws IOException {
this.charset = charset;
boundary = "===" + System.currentTimeMillis() + "===";
URL url = new URL(requestURL);
httpConn = (HttpURLConnection) url.openConnection();
httpConn.setUseCaches(false);
httpConn.setDoOutput(true); // indicates POST method
httpConn.setDoInput(true);
httpConn.setRequestProperty("Content-Type",
"multipart/form-data; boundary=" + boundary);
httpConn.setRequestProperty("api_key", "a05f9ece-cd34-11e4-afdc-1681e6b88ec1");
outputStream = httpConn.getOutputStream();
writer = new PrintWriter(new OutputStreamWriter(outputStream, charset),
true);
}
/**
* Adds a form field to the request
*
* @param name field name
* @param value field value
*/
public void addFormField(String name, String value) {
writer.append("--").
append(boundary).
append(LINE_FEED).
append("Content-Disposition: form-data; name=\"").
append(name).append("\"").
append(LINE_FEED).
append("Content-Type: text/plain; charset=").
append(charset).append(
LINE_FEED);
writer.append(LINE_FEED);
writer.append(value).append(LINE_FEED);
writer.flush();
}
/**
* Adds a upload file section to the request
*
* @param fieldName name attribute in <input type="file" name="..." />
* @param fileBytes a File to be uploaded
* @throws IOException
*/
public void addFilePart(String fieldName, byte[] fileBytes)
throws IOException {
// String fileName = uploadFile.getName();
writer.append("--")
.append(boundary)
.append(LINE_FEED)
.append("Content-Disposition: form-data; name=\"")
.append(fieldName)
.append("\"; filename=\"")
.append("user.jpeg")
.append("\"")
.append(LINE_FEED)
.append("Content-Type: image/jpeg")
.append(LINE_FEED)
.append("Content-Transfer-Encoding: binary")
.append(LINE_FEED)
.append(LINE_FEED);
writer.flush();
ByteArrayInputStream inputStream = new ByteArrayInputStream(fileBytes);
byte[] buffer = new byte[4096];
int bytesRead;
while ((bytesRead = inputStream.read(buffer)) != -1) {
outputStream.write(buffer, 0, bytesRead);
}
outputStream.flush();
inputStream.close();
writer.append(LINE_FEED);
writer.flush();
}
/**
* Adds a header field to the request.
*
* @param name - name of the header field
* @param value - value of the header field
*/
public void addHeaderField(String name, String value) {
writer.append(name).append(": ").append(value).append(LINE_FEED);
writer.flush();
}
/**
* Completes the request and receives response from the server.
*
* @return a list of Strings as response in case the server returned
* status OK, otherwise an exception is thrown.
* @throws IOException
*/
public String finish() throws IOException {
writer.append(LINE_FEED).flush();
writer.append("--")
.append(boundary)
.append("--")
.append(LINE_FEED)
.close();
String data = "";
int status = httpConn.getResponseCode();
if (status == HttpURLConnection.HTTP_OK) {
BufferedReader reader = new BufferedReader(new InputStreamReader(
httpConn.getInputStream()));
String line = null;
while ((line = reader.readLine()) != null) {
data = data + line;
}
reader.close();
httpConn.disconnect();
} else {
throw new IOException("Server returned non-OK status: " + status);
}
return data.isEmpty() ? null : data;
}
}
答案 1 :(得分：2)
我已经解决了这个问题。只需要在uploadFile（）方法中进行以下更改。现在一切正常。
public int uploadFile(String imagepath) {
String fileName = imagepath;
Log.e("File Name", fileName);
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(fileName);
int pk = almabayDatabase.getUserID();
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);
Log.e("Sourcefile", "File doesn't exist");
}
});
return 0;
} else {
try {
// open a URL connection to the Servlet
FileInputStream fileInputStream = new FileInputStream(sourceFile);
URL url = new URL(url_profilePic);
// 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("url", fileName);
// conn.setRequestProperty("timeline_id", String.valueOf(pk));
dos = new DataOutputStream(conn.getOutputStream());
// add parameter timeline_id
String timeline_id = String.valueOf(pk);
Log.e("Sending", "Sending PK");
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"timeline_id\"" + lineEnd);
dos.writeBytes(lineEnd);
// assign value
dos.writeBytes(timeline_id);
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + lineEnd);
//Send Image
Log.e("Sending", "Sending Image");
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"url\";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();
Log.e("ResponseCode", String.valueOf(serverResponseCode));
String serverResponseMessage = conn.getResponseMessage();
Log.i("uploadFile", "HTTP Response is : "
+ serverResponseMessage + ": " + serverResponseCode);
if (serverResponseCode == 200) {
runOnUiThread(new Runnable() {
public void run() {
Toast.makeText(UploadProfilePicActivity.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(UploadProfilePicActivity.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(UploadProfilePicActivity.this, "Got Exception : see logcat ", Toast.LENGTH_SHORT).show();
}
});
Log.e("Upload file failed", "Exception : " + e.getMessage(), e);
}
dialog.dismiss();
return serverResponseCode;
} // End else block
}
答案 2 :(得分：-1)
只需使用以下方法通过json请求发送多个文件...
mImagePath是图像路径的arraylist
SQLITE_THREADSAFE