我是安卓新手。如何使用多部分发布方法将文本数据与图像一起发送到服务器？我现在可以将图像和名称一起发送到服务器。我必须同时发送字符串 data1 和 data2。
代码如下
public class UploadToServerNew extends Activity {
TextView messageText;
Button uploadButton;
int serverResponseCode = 0;
private static final int SELECT_PHOTO = 100;
String upLoadServerUri = null;
/********** File Path *************/
Uri selectedImage;
String pathtoimage;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_upload_to_server);
uploadButton = (Button)findViewById(R.id.uploadButton);
messageText = (TextView)findViewById(R.id.messageText);
/************* Php script path ****************/
upLoadServerUri = "http://192.168.1.23/imagetransfer/UploadToServer.php";
uploadButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent photoPickerIntent = new Intent(Intent.ACTION_PICK);
photoPickerIntent.setType("image/*");
startActivityForResult(photoPickerIntent, SELECT_PHOTO);
}
});
}
private String getRealPathFromURI(Uri contentURI) {
String result;
Cursor cursor = getContentResolver().query(contentURI, null, null, null, null);
if (cursor == null) { // Source is Dropbox or other similar local file path
result = contentURI.getPath();
} else {
cursor.moveToFirst();
int idx = cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA);
result = cursor.getString(idx);
cursor.close();
}
return result;
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent imageReturnedIntent) {
super.onActivityResult(requestCode, resultCode, imageReturnedIntent);
switch(requestCode) {
case SELECT_PHOTO:
if (resultCode == RESULT_OK) {
selectedImage = imageReturnedIntent.getData();
pathtoimage = getRealPathFromURI(selectedImage);
new uploadFile().execute(pathtoimage);
Log.d("path", pathtoimage);
}
}
}
private class uploadFile extends AsyncTask<String, Void, Void>{
ProgressDialog dialog;
@Override
protected void onPreExecute() {
// TODO Auto-generated method stub
super.onPreExecute();
messageText.setText("");
dialog = ProgressDialog.show(UploadToServerNew.this, "", "Uploading file...", true);
dialog.show();
}
@Override
protected Void doInBackground(String... pathtoimage) {
// TODO Auto-generated method stub
uploadFile(pathtoimage[0]);
return null;
}
@Override
protected void onPostExecute(Void result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
if(dialog.isShowing()){
dialog.dismiss();
}
}
}
public int uploadFile(String sourceFileUri) {
String fileName = sourceFileUri;
String data1="one",data2="two";
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);
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("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);
if(serverResponseCode == 200){
runOnUiThread(new Runnable() {
public void run() {
String msg = "File Upload Completed.\n\n See uploaded file here : \n\n"
+"http://localhost/imagetransfer/uploads/";
messageText.setText(msg);
Toast.makeText(UploadToServerNew.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(UploadToServerNew.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(UploadToServerNew.this, "Got Exception : see logcat ",
Toast.LENGTH_SHORT).show();
}
});
Log.e("Upload file to server Exception", "Exception : "
+ e.getMessage(), e);
}
// dialog.dismiss();
return serverResponseCode;
}
}
最佳答案
将文本和图像发送到服务器是一项简单的任务..只需将图像转换为字符串并与文本一起发送..
Bitmap bitmap = BitmapFactory.decodeFile(fileUri);
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 90, stream);
byte[] byteArray= stream.toByteArray();
String imageString= Base64.encode(byteArray);
ArrayList<NameValuePair> ValuePairs= newArrayList<NameValuePair>();
ValuePairs .add(new BasicNameValuePair("image", imageString));
ValuePairs .add(new BasicNameValuePair("imageName", Name));
ValuePairs .add(new BasicNameValuePair("FolderId", folder));
try
{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost =new HttpPost("http://64.125.119.152:1991/uploadserver/UploadToServer.php");
System.setProperty("http.keepAlive", "false");
httppost .setEntity(new UrlEncodedFormEntity(ValuePairs ));
HttpResponse response = httpclient.execute(httppost );
Strresponse= convertResponseToString(response );
}
catch (Exception e)
{
Toast.makeText(s, "ERROR " + e.getMessage(),
Toast.LENGTH_LONG).show();
System.out.println("Error in http connection " + e.toString());
}
return Strresponse;
} //*visit:http://androiddhina.blogspot.in/p/androidhints.html */
关于android - 使用多部分数据发布将文本数据与图像一起发送到服务器，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/23468908/