我是android的新手。如何使用multipart post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。我必须发送String 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;
}
}
答案 0 :(得分：3)
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随文本一起发送..
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 */
答案 1 :(得分：1)
您可以尝试这样的事情：
conn.setRequestProperty("uploaded_file", fileName);
conn.setRequestProperty("key_1", "value_1");
conn.setRequestProperty("key_2", "value?_2");
conn.setRequestProperty("key_3", "value_3");
conn.setRequestProperty("key_n", "value_n");
其中key__1,2,3，n是data1，data2，datan ....
<强> EDITED
在php中的服务器端：
您可以使用此$_SERVER["key_1"]或$_SERVER["key_2"] .... $_SERVER["key_n"];
答案 2 :(得分：0)
尝试使用HTTP Request库。要执行多部分发布，您只需要：
HttpRequest request = HttpRequest.post("http://google.com");
request.part("status[body]", "Making a multipart request");
request.part("status[image]", new File("/home/kevin/Pictures/ide.png"));
if (request.ok())
System.out.println("Status was updated");
答案 3 :(得分：0)
你可以试试这个：
THIS IS YOUR CODE
.......
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"uploaded_file\";filename=\""+ fileName + "\"" + lineEnd);
// add code below ...
// start from here ............
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"YOUR VARIABLE NAME\"" + lineEnd + lineEnd + "YOUR DATA VALUE" + lineEnd);
// end .............
THIS IS YOUR CODE
dos.writeBytes(lineEnd);
...........
答案 4 :(得分：0)
请在此处使用以下方法：
Button btn_update = view.findViewById(R.id.btn_update);
btn_update.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (Util.isConnectingToInternet(getActivity())) {
updateProfileDetails();
} else {
// No Internet Connection code here
}
}
});
private String imagePath;
ProgressDialog pDialog;
AlertDialog.Builder builder;
public void updateProfileDetails() {
new AsyncTask<Void, Integer, String>(){
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(getActivity());
pDialog.setTitle("Please wait");
pDialog.setMessage("updating.... ");
pDialog.setCancelable(false);
pDialog.show();
builder = new AlertDialog.Builder(getActivity());
}
@Override
protected String doInBackground(Void... voids) {
return uploadFile();
}
private String uploadFile(){
File uploadFile1 = new File(imagePath);
File uploadFile2 = new File(imagePath);
String logId = applicationController.getValueFromPerference(Constants.LOGID);
String responseString = null;
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(Constants.URL + Constants.UPDATE_PROFILE);
try {
MultipartEntityBuilder entityBuilder = MultipartEntityBuilder.create();
entityBuilder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
entityBuilder.addTextBody("companyname", companyName);
entityBuilder.addTextBody("name", name);
entityBuilder.addTextBody("phone", mobileNo);
entityBuilder.addTextBody("email", emailId);
entityBuilder.addTextBody("dateofbirth", dateOfBirth);
entityBuilder.addTextBody("aadharnumber", aadhaarCardNo);
entityBuilder.addTextBody("pannumber", pancardNo);
entityBuilder.addTextBody("address", address);
entityBuilder.addTextBody("location", location);
entityBuilder.addTextBody("pincode", pincode);
entityBuilder.addTextBody("logid", logId);
entityBuilder.addBinaryBody("userimage", uploadFile1);
entityBuilder.addBinaryBody("gumasta", uploadFile2);
HttpEntity entity = entityBuilder.build();
httppost.setEntity(entity);
HttpResponse response = httpclient.execute(httppost);
HttpEntity httpEntity = response.getEntity();
int statusCode = response.getStatusLine().getStatusCode();
if (statusCode == 200) {
// Server response
responseString = EntityUtils.toString(httpEntity);
} else {
responseString = "Error occurred! Http Status Code: "
+ statusCode;
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return responseString;
}
@Override
protected void onPostExecute(String resultString) {
super.onPostExecute(resultString);
if (pDialog.isShowing())
pDialog.dismiss();
Toast toast = Toast.makeText(context, resultString, Toast.LENGTH_LONG);
toast.getView().setBackgroundColor(getResources().getColor(R.color.nevy_blue));
toast.show();
if (resultString != null && !resultString.equals("")) {
try {
JSONObject jsonObject = new JSONObject(resultString);
if (jsonObject.getString("status").equals("1")) {
builder.setCancelable(true);
builder.setMessage(jsonObject.getString("message"));
builder.setInverseBackgroundForced(true);
builder.setPositiveButton("Done", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
builder.show();
} else {
Toast toast1 = Toast.makeText(context, jsonObject.getString("message"), Toast.LENGTH_LONG);
toast1.getView().setBackgroundColor(getResources().getColor(R.color.green));
toast1.show();
}
} catch (JSONException e) {
e.printStackTrace();
}
} else {
Toast toast2 = Toast.makeText(context, "Sorry! Due to some problem Message sending failed", Toast.LENGTH_LONG);
toast2.getView().setBackgroundColor(getResources().getColor(R.color.red));
toast2.show();
}
}
}.execute();
}