如何將圖像添加到網絡服務器

Question

在這裏我想上傳圖片到網站。

我列出了代碼，但哪些是不工作的。

所以plz幫我糾正這一點。

MyImageUploader.java

import java.io.BufferedReader; 
import java.io.ByteArrayOutputStream; 
import java.io.File; 
import java.io.IOException; 
import java.io.InputStream; 
import java.io.InputStreamReader; 
import java.io.Reader; 
import java.io.StringWriter; 
import java.io.Writer; 
import java.util.ArrayList; 

import org.apache.http.HttpResponse; 
import org.apache.http.client.HttpClient; 
import org.apache.http.client.methods.HttpPost; 
import org.apache.http.entity.StringEntity; 
import org.apache.http.impl.client.DefaultHttpClient; 
import org.apache.http.protocol.BasicHttpContext; 
import org.apache.http.protocol.HttpContext; 

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.graphics.Bitmap.CompressFormat; 
import android.net.Uri; 
import android.os.AsyncTask; 
import android.os.Bundle; 
import android.provider.MediaStore; 
import android.provider.SyncStateContract.Constants; 
import android.util.Log; 
import android.view.Menu; 
import android.view.MenuInflater; 
import android.view.MenuItem; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.ImageView; 
import android.widget.TextView; 
import android.widget.Toast; 

public class MyImageUploader extends Activity{ 
    private static final int PICK_IMAGE = 1; 
    private ImageView imageview; 
    private TextView textview; 
    private Button button; 
    private EditText edittext; 
    private Bitmap bitmap; 
    private ProgressDialog dialog; 
    String albumId = ConstantData.album_id; 
    Integer userId = ConstantData.userId; 
    Bitmap photoId; 
    ArrayList<Object> result; 
    XmlParser parser; 
    HttpResponse response; 
    InputStream in; 
    String strResponse; 
    HttpPost post; 
    int width_tmp,height_tmp; 
    public void onCreate(Bundle savedInstanceState){ 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.myimageuploader); 

     imageview = (ImageView)findViewById(R.id.upldimgvw); 
     button = (Button)findViewById(R.id.btn_imgupld); 
     edittext = (EditText)findViewById(R.id.edt_cptn); 
     button.setOnClickListener(new OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       // TODO Auto-generated method stub 
       if(bitmap == null){ 
        Toast.makeText(getApplicationContext(), "Please select image..", Toast.LENGTH_SHORT).show(); 
       } 
       else{ 
        dialog = ProgressDialog.show(MyImageUploader.this, "Uploading", "Please wait...",true); 
        new ImageUploadTask().execute(); 
       } 
      } 
     }); 
    } 
    public boolean onCreateOptionsMenu(Menu menu) { 
     MenuInflater inflater = getMenuInflater(); 
     inflater.inflate(R.menu.imageupload_menu, menu); 
     return true; 
    } 
    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     switch (item.getItemId()) { 
      case R.id.ic_menu_gallery: 
       try{ 
        Intent intent = new Intent(); 
        intent.setType("Image/*"); 
        intent.setAction(Intent.ACTION_GET_CONTENT); 
        startActivityForResult(Intent.createChooser(intent, "Select Picture"),PICK_IMAGE); 
       }catch (Exception e) { 
       // TODO: handle exception 
        Toast.makeText(getApplicationContext(), "Get Picture" ,Toast.LENGTH_SHORT).show(); 
        Log.e(e.getClass().getName(),e.getMessage(),e); 
        break; 
       } 
       return true; 
      case R.id.ic_menu_Images:  
       Toast.makeText(this, "You pressed the Image!", Toast.LENGTH_LONG).show(); 
       break; 
     } 
     return super.onOptionsItemSelected(item); 
     } 

    protected void onActivityResult(int requestcode,int resultcode, Intent data){ 
     Log.i("Request Code",""+requestcode); 
     Log.i("Result Code", ""+resultcode); 
     Log.i("Intent Data",""+data); 
     switch(requestcode){ 
     case PICK_IMAGE: 
      if(resultcode == Activity.RESULT_OK); 
      Uri selectedImageUri = data.getData(); 
      String filePath = null; 
      try{ 
       String filemanagerstring = selectedImageUri.getPath(); 
       String selectedImagePath = getPath(selectedImageUri); 
       if(selectedImagePath != null) 
       { 
        filePath = selectedImagePath; 
       }else if(filemanagerstring != null) 
       { 
        filePath = filemanagerstring; 
       }else{ 
        Toast.makeText(getApplicationContext(), "Unknown Path",Toast.LENGTH_SHORT).show(); 
        Log.e("Bitmap","Unknown Path"); 
       } 
       if(filePath != null){ 
        decodeFile(filePath); 
       } 
       else{ 
        bitmap = null; 
       } 
      }catch (Exception e) { 
       // TODO: handle exception 
       Toast.makeText(getApplicationContext(), "Internal Error", Toast.LENGTH_SHORT); 
       Log.e(e.getClass().getName(), e.getMessage(), e); 
      } 
     } 

    } 

    class ImageUploadTask extends AsyncTask<Void, Void, String>{ 
     @Override 
     protected String doInBackground(Void... params) { 
      // TODO Auto-generated method stub 
       try{ 
        DefaultHttpClient client = new DefaultHttpClient(); 
        post = new HttpPost("http://192.168.5.10/ijoomer_development/index.php?option=com_ijoomer&plg_name=jomsocial&pview=album&ptask=album_list&upload_photo&userid=80&sessionid=3011e063260d55b8a7095bc3a581130c&tmpl=component 14:34"); 
        StringBuffer strBuffer = new StringBuffer("<data><userid>" + userId + "</userid><albumid>" + albumId + "</albumid><photo>"+photoId+"</photo></data>"); 
        StringEntity strEntity = new StringEntity(strBuffer.toString()); 
        post.setEntity(strEntity); 

        MultipartEntity entity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE); 
        ByteArrayOutputStream bos = new ByteArrayOutputStream(); 
        bitmap.compress(CompressFormat.JPEG, 100, bos); 
        byte[] data = bos.toByteArray(); 
        entity.addpart("userId"); 
        entity.addPart("albumId"); 
        entity.addPart("photoId", new FileBody(new File(filepath))); 
        post.setEntity(entity); 
        response = client.execute(post); 
        in = response.getEntity().getContent(); 
        BufferedReader reader = new BufferedReader(new InputStreamReader(in, "UTF-8")); 
        strResponse = convertStreamToString(in); 
        parser = new XmlParser(in, new AddAlbumDetailBean()); 
        result = parser.parse("data", "photo"); 
       }catch (Exception e){ 
        if (dialog.isShowing()) 
         dialog.dismiss(); 
         Toast.makeText(getApplicationContext(),"image",Toast.LENGTH_LONG).show(); 
        Log.e(e.getClass().getName(), e.getMessage(), e); 
      return null; 
     } 
       return albumId; 
     } 
     } 
    protected void onPostExecution(String strResponse){ 
      try{ 
       if(dialog.isShowing()) 
        dialog.dismiss(); 
       if(strResponse != null) 
       { 
        Toast.makeText(getApplicationContext(),"Success", Toast.LENGTH_SHORT).show(); 
       } 
       else{ 
        Toast.makeText(getApplicationContext(), "Photo Uploaded Successfully", Toast.LENGTH_SHORT).show(); 
        edittext.setText(""); 
       } 


       }catch (Exception e) { 
        // TODO: handle exception 
        Toast.makeText(getApplicationContext(),"Exception Image", Toast.LENGTH_SHORT).show(); 
           Log.e(e.getClass().getName(), e.getMessage(), e); 
       } 
    } 


    public String getPath(Uri uri){ 
     String[] projection = {MediaStore.Images.Media.DATA}; 
     Cursor cursor = managedQuery(uri, projection, null, null, null); 
     if(cursor != null){ 
      int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA); 
      cursor.moveToFirst(); 
      return cursor.getString(column_index); 
     } 
     else{ 
      return null; 
     } 
    } 
    public void decodeFile(String filePath){ 
     BitmapFactory.Options o = new BitmapFactory.Options(); 
     o.inJustDecodeBounds = true; 
     BitmapFactory.decodeFile(filePath,o); 

     final int REQUEST_SIZE = 1024; 
     int width_tmp = o.outWidth,height_tmp = o.outHeight; 
     int scale = 1; 
     while(true){ 
     // if(width_tmp &lt;REQUEST_SIZE &amp;&amp; height_tmp &lt; REQUEST_SIZE){ 
       //break; 
       width_tmp /= 2; 
       height_tmp /= 2; 
       scale *= 2; 
     // } 
      BitmapFactory.Options o2 = new BitmapFactory.Options(); 
      o2.inSampleSize = scale; 
      bitmap = BitmapFactory.decodeFile(filePath,o2); 
      imageview.setImageBitmap(bitmap); 
     } 

    } 
    public String convertStreamToString(InputStream in) 
    throws IOException { 


     if (in != null) { 
      Writer writer = new StringWriter(); 

      char[] buffer = new char[1024]; 
      try { 
       Reader reader = new BufferedReader(
         new InputStreamReader(in, "UTF-8")); 
       int n; 
       while ((n = reader.read(buffer)) != -1) { 
        writer.write(buffer, 0, n); 
       } 
      } finally { 
       // in.close(); 
      } 
      return writer.toString(); 
     } else { 
      return ""; 
     } 
    } 
} 

感謝。

Answer 1

使用此功能上傳。請傳遞路徑ur文件作爲參數。

public void uploadImage(String fileName) 
{ 
    HttpURLConnection connection = null; 
    DataOutputStream outputStream = null; 
    DataInputStream inputStream = null; 

    String pathToOurFile = fileName; 
    String urlServer = GlobalHandler.getImageUploadUrl(); 
    String lineEnd = "\r\n"; 
    String twoHyphens = "--"; 
    String boundary = "*****"; 

    int bytesRead, bytesAvailable, bufferSize; 
    byte[] buffer; 
    int maxBufferSize = 1*1024*1024; 

    try 
    { 
    FileInputStream fileInputStream = new FileInputStream(new File(pathToOurFile)); 

    URL url = new URL(urlServer); 
    connection = (HttpURLConnection) url.openConnection(); 

    // Allow Inputs & Outputs 
    connection.setDoInput(true); 
    connection.setDoOutput(true); 
    connection.setUseCaches(false); 

    // Enable POST method 
    connection.setRequestMethod("POST"); 

    connection.setRequestProperty("Connection", "Keep-Alive"); 
    connection.setRequestProperty("Content-Type", "multipart/form-data;boundary="+boundary); 
    if(GlobalHandler.getUserId()!=null) 
     connection.addRequestProperty("user_id", GlobalHandler.getUserId()); 
    else 
     connection.addRequestProperty("user_id", "007"); 

    outputStream = new DataOutputStream(connection.getOutputStream()); 
    outputStream.writeBytes(twoHyphens + boundary + lineEnd); 
    outputStream.writeBytes("Content-Disposition: form-data; name=\"upload_file\"; filename=\"" + pathToOurFile +"\"" + lineEnd); 
    outputStream.writeBytes(lineEnd); 

    bytesAvailable = fileInputStream.available(); 
    bufferSize = Math.min(bytesAvailable, maxBufferSize); 
    buffer = new byte[bufferSize]; 

    // Read file 
    bytesRead = fileInputStream.read(buffer, 0, bufferSize); 

    while (bytesRead > 0) 
    { 
    outputStream.write(buffer, 0, bufferSize); 
    bytesAvailable = fileInputStream.available(); 
    bufferSize = Math.min(bytesAvailable, maxBufferSize); 
    bytesRead = fileInputStream.read(buffer, 0, bufferSize); 
    } 

    outputStream.writeBytes(lineEnd); 
    outputStream.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd); 

    // Responses from the server (code and message) 
    int serverResponseCode = connection.getResponseCode(); 
    String serverResponseMessage = connection.getResponseMessage(); 
    fileInputStream.close(); 
    outputStream.flush(); 
    outputStream.close(); 
    } 
    catch (Exception ex) 
    { 
    //Exception handling 

    } 

}