请原谅我的英语不是很好， 我得到这段代码可以上传服务器阵列照片， 但我不知道如何用Progress栏显示上传照片的数量， 请帮帮我......
public class processUpload extends AsyncTask<String ,Integer,JSONObject>{
String requestURL;
String charset = "UTF-8";
JSONObject jsonResponse;
private File[] files;
public processUpload(File[] file) {
this.files = file;
}
@Override
protected void onPreExecute() {
requestURL = G.DOMEAIN+"/photo";
pDialog = new ProgressDialog(ActivityUpload.this);
pDialog.setTitle("Upload Images");
pDialog.setMessage("pl wait...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
@Override
protected void onProgressUpdate(Integer... values) {
// pDialog.setProgress(values[0]);
}
@Override
protected JSONObject doInBackground(String... params) {
try {
final FileUploader multipart = new FileUploader(requestURL, charset);
multipart.addHeaderField("User-Agent", "CodeJava");
multipart.addHeaderField("Test-Header", "Header-Value");
multipart.addFormField("description", "Cool Pictures");
multipart.addFormField("keywords", "Java,upload,Spring");
multipart.addFormUserId("userId", UserInfo.USER_ID);
for (int i = 0; i < G.selectImages.size(); i++) {
multipart.addFilePart("images[]", sourceFile[i]);
}
/*multipart.addFilePart("fileUpload", uploadFile1);
multipart.addFilePart("fileUpload", uploadFile2);*/
List<String> response = multipart.finish();
System.out.println("SERVER REPLIED:");
for (String line : response) {
System.out.println(line);
}
jsonResponse = new JSONObject(response.get(0));
} catch (IOException ex) {
System.err.println(ex);
} catch (JSONException e) {
e.printStackTrace();
}
return jsonResponse;
}
@Override
protected void onPostExecute(JSONObject json) {
//do something
}
}
}
和这个FileUploader类
public class FileUploader {
private final String boundary;
private static final String LINE_FEED = "\r\n";
private HttpURLConnection httpConn;
private String charset;
private OutputStream outputStream;
private PrintWriter writer;
public FileUploader(String requestURL, String charset)
throws IOException {
this.charset = charset;
// creates a unique boundary based on time stamp
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("User-Agent", "CodeJava Agent");
httpConn.setRequestProperty("Test", "Bonjour");
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("--" + boundary).append(LINE_FEED);
writer.append("Content-Disposition: form-data; name=\"" + name + "\"")
.append(LINE_FEED);
writer.append("Content-Type: text/plain; charset=" + charset).append(
LINE_FEED);
writer.append(LINE_FEED);
writer.append(value).append(LINE_FEED);
writer.flush();
}
/**
* Adds a form field to the request
* @param name field name
* @param value field value
*/
public void addFormUserId(String name, String value) {
writer.append("--" + boundary).append(LINE_FEED);
writer.append("Content-Disposition: form-data; name=\"" + name + "\"")
.append(LINE_FEED);
writer.append("Content-Type: text/plain; charset=" + 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 uploadFile a File to be uploaded
* @throws IOException
*/
public void addFilePart(String fieldName, File uploadFile)
throws IOException {
String fileName = uploadFile.getName();
writer.append("--" + boundary).append(LINE_FEED);
writer.append(
"Content-Disposition: form-data; name=\"" + fieldName
+ "\"; filename=\"" + fileName + "\"")
.append(LINE_FEED);
writer.append(
"Content-Type: "
+ URLConnection.guessContentTypeFromName(fileName))
.append(LINE_FEED);
writer.append("Content-Transfer-Encoding: binary").append(LINE_FEED);
writer.append(LINE_FEED);
writer.flush();
FileInputStream inputStream = new FileInputStream(uploadFile);
byte[] buffer = new byte[4096];
int bytesRead = -1;
int totalByteRead = 0;
int n=1;
while ((bytesRead = inputStream.read(buffer)) != -1) {
totalByteRead += bytesRead;
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 + ": " + 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 List<String> finish() throws IOException {
List<String> response = new ArrayList<String>();
writer.append(LINE_FEED).flush();
writer.append("--" + boundary + "--").append(LINE_FEED);
writer.close();
// checks server's status code first
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) {
response.add(line);
}
reader.close();
httpConn.disconnect();
} else {
throw new IOException("Server returned non-OK status: " + status);
}
return response;
}
}
答案 0 :(得分：0)
检查以下代码以进行文件上传
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.mime.content.InputStreamBody;
import org.apache.http.entity.mime.content.StringBody;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.CoreProtocolPNames;
import org.apache.http.util.EntityUtils;
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.AsyncTask;
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.LinearLayout;
import android.widget.ScrollView;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity implements OnClickListener {
final static int REQUEST_CODE = 1;
final static String[]BUTTON_LABEL = {"Select Image","Upload Image"};
// CHANGE THIS TO YOUR URL
final static String UPLOAD_SERVER_URI = "http://192.168.25.117/android/UploadToServer.php";
ProgressDialog progressDialog;
ScrollView scrollView;
LinearLayout linearLayout;
ImageView imageView;
TextView imageLocationTextView;
Button selectImgBtn;
Button uploadBtn;
String imagePath;
String imageName;
long imageSize = 0; // kb
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.setupLayout();
}
/**
*
*/
private void setupLayout(){
scrollView = new ScrollView(this);
linearLayout = new LinearLayout(this);
imageView = new ImageView(this);
imageLocationTextView = new TextView(this);
selectImgBtn = new Button(this);
uploadBtn = new Button(this);
selectImgBtn.setText(BUTTON_LABEL[0]);
uploadBtn.setText(BUTTON_LABEL[1]);
selectImgBtn.setOnClickListener(this);
uploadBtn.setOnClickListener(this);
linearLayout.setOrientation(LinearLayout.VERTICAL);
linearLayout.addView(imageView);
linearLayout.addView(imageLocationTextView);
linearLayout.addView(selectImgBtn);
linearLayout.addView(uploadBtn);
scrollView.addView(linearLayout);
this.setContentView(scrollView);
}
/**
*
* @return
*/
private ProgressDialog createDialog(){
ProgressDialog progressDialog = new ProgressDialog(this);
progressDialog.setMessage("Please wait.. Uploading File");
progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
progressDialog.setCancelable(false);
return progressDialog;
}
@Override
public void onClick(View view) {
String viewLabel = ((Button)view).getText().toString();
if(viewLabel.equalsIgnoreCase(BUTTON_LABEL[0])){
// SELECT IMAGE
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Select Image"), REQUEST_CODE);
}else{
// UPLOAD IMAGE
if(this.imagePath == null){
// IF NO IMAGE SELECTED DO NOTHING
Toast.makeText(this, "No image selected", Toast.LENGTH_SHORT).show();
return;
}
this.progressDialog = this.createDialog();
this.progressDialog.show();
// EXECUTED ASYNCTASK TO UPLOAD IMAGE
new ImageUploader().execute();
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
if(requestCode == REQUEST_CODE && resultCode == RESULT_OK){
Uri selectedImageUri = data.getData();
// GET IMAGE PATH
imagePath = getPath(selectedImageUri);
// IMAGE NAME
imageName = imagePath.substring(imagePath.lastIndexOf("/"));
imageSize = this.getFileSize(imagePath);
// DECODE TO BITMAP
Bitmap bitmap=BitmapFactory.decodeFile(imagePath);
// DISPLAY IMAGE
imageView.setImageBitmap(bitmap);
imageLocationTextView.setText("File path :" +imagePath);
}
}
/**
* Get the image path
* @param uri
* @return
*/
private 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);
}
/**
* Get the file size in kilobytes
* @return
*/
private long getFileSize(String imagePath){
long length = 0;
try {
File file = new File(imagePath);
length = file.length();
length = length / 1024;
} catch (Exception e) {
e.printStackTrace();
}
return length;
}
/**
* This class is responsible for uploading data
* @author lauro
*
*/
private class ImageUploader extends AsyncTask<Void, Integer, Boolean> implements UploadProgressListener {
@Override
protected Boolean doInBackground(Void... params) {
try{
InputStream inputStream = new FileInputStream(new File(imagePath));
//*** CONVERT INPUTSTREAM TO BYTE ARRAY
byte[] data = this.convertToByteArray(inputStream);
HttpClient httpClient = new DefaultHttpClient();
httpClient.getParams().setParameter(CoreProtocolPNames.USER_AGENT,System.getProperty("http.agent"));
HttpPost httpPost = new HttpPost(UPLOAD_SERVER_URI);
// STRING DATA
StringBody dataString = new StringBody("This is the sample image");
// FILE DATA OR IMAGE DATA
InputStreamBody inputStreamBody = new InputStreamBody(new ByteArrayInputStream(data),imageName);
// MultipartEntity multipartEntity = new MultipartEntity();
CustomMultiPartEntity multipartEntity = new CustomMultiPartEntity();
// SET UPLOAD LISTENER
multipartEntity.setUploadProgressListener(this);
//*** ADD THE FILE
multipartEntity.addPart("file", inputStreamBody);
//*** ADD STRING DATA
multipartEntity.addPart("description",dataString);
httpPost.setEntity(multipartEntity);
// EXECUTE HTTPPOST
HttpResponse httpResponse = httpClient.execute(httpPost);
// THE RESPONSE FROM SERVER
String stringResponse = EntityUtils.toString(httpResponse.getEntity());
// DISPLAY RESPONSE OF THE SERVER
Log.d("data from server",stringResponse);
} catch (FileNotFoundException e1) {
e1.printStackTrace();
return false;
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return false;
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return false;
}
return true;
}
/**
*
*/
@Override
public void transferred(long num) {
// COMPUTE DATA UPLOADED BY PERCENT
long dataUploaded = ((num / 1024) * 100 ) / imageSize;
// PUBLISH PROGRESS
this.publishProgress((int)dataUploaded);
}
/**
* Convert the InputStream to byte[]
* @param inputStream
* @return
* @throws IOException
*/
private byte[] convertToByteArray(InputStream inputStream) throws IOException{
ByteArrayOutputStream bos = new ByteArrayOutputStream();
int next = inputStream.read();
while (next > -1) {
bos.write(next);
next = inputStream.read();
}
bos.flush();
return bos.toByteArray();
}
@Override
protected void onProgressUpdate(Integer... values) {
super.onProgressUpdate(values);
// UPDATE THE PROGRESS DIALOG
progressDialog.setProgress(values[0]);
}
@Override
protected void onPostExecute(Boolean uploaded) {
// TODO Auto-generated method stub
super.onPostExecute(uploaded);
if( uploaded){
// UPLOADING DATA SUCCESS
progressDialog.dismiss();
Toast.makeText(MainActivity.this, "File Uploaded", Toast.LENGTH_SHORT).show();
}else{
// UPLOADING DATA FAILED
progressDialog.setMessage("Uploading Failed");
progressDialog.setCancelable(true);
}
}
}
}
有关详情，请点击以下链接。
http://justsimpleinfo.blogspot.in/2014/07/android-upload-file-to-server-with-data.html
希望它对您有所帮助。