android - 在 android 中将多个图像上传到服务器的最快方法

Question

我有多个图像要上传到服务器，我有一个方法可以将单个图像上传到服务器。现在我正在使用这种方法通过为每个图像创建循环来发送多个图像。

有没有最快的方法可以将多个图像发送到服务器？。提前致谢...

public int imageUpload(GroupInfoDO infoDO) {
        ObjectMapper mapper = new ObjectMapper();
        int groupId = 0;
        try {
            Bitmap bm = BitmapFactory.decodeFile(infoDO.getDpUrl());
            String fileName = infoDO.getDpUrl().substring(
                    infoDO.getDpUrl().lastIndexOf('/') + 1,
                    infoDO.getDpUrl().length());
            ByteArrayOutputStream bos = new ByteArrayOutputStream();
            bm.compress(CompressFormat.JPEG, 75, bos);
            byte[] data = bos.toByteArray();
            HttpClient httpClient = new DefaultHttpClient();
            HttpPost postRequest = new HttpPost(
                    "http://192.168.1.24:8081/REST/groupreg/upload");
            ByteArrayBody bab = new ByteArrayBody(data,
                    "application/octet-stream");
            MultipartEntity reqEntity = new MultipartEntity(
                    HttpMultipartMode.BROWSER_COMPATIBLE);
            reqEntity.addPart("uploadFile", bab);
            reqEntity.addPart("name", new StringBody(fileName));
            reqEntity.addPart("grpId", new StringBody(infoDO.getGlobalAppId()
                    + ""));
            postRequest.setEntity(reqEntity);
            HttpResponse response = httpClient.execute(postRequest);
            if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
                HttpEntity httpEntity = response.getEntity();
                String json = EntityUtils.toString(httpEntity);
                Map<String, Object> mapObject = mapper.readValue(json,
                        new TypeReference<Map<String, Object>>() {
                        });
                if ((mapObject != null)
                        && (mapObject.get("status").toString()
                                .equalsIgnoreCase("SUCCESS"))) {
                    groupId = (Integer.valueOf(mapObject.get("groupId")
                            .toString()));
                }
            }
        } catch (Exception e1) {
            e1.printStackTrace();
            Log.e("log_tag", "Error in http connection " + e1.toString());
        }
        return groupId;
    } 

Answer 1

有很多方法可以将更多图像上传到服务器。其中一种可能包括两个库:apache-mime4j-0.6.jar 和 httpmime-4.0.1.jar。之后创建您的 java 主要代码:

import java.io.File;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.mime.MultipartEntity;
import org.apache.http.entity.mime.content.FileBody;
import org.apache.http.entity.mime.content.StringBody;
import org.apache.http.impl.client.DefaultHttpClient;
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.Color;
import android.net.Uri;
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.TextView;
import android.widget.Toast;

public class FileUploadTest extends Activity {

    private static final int SELECT_FILE1 = 1;
    private static final int SELECT_FILE2 = 2;
    String selectedPath1 = "NONE";
    String selectedPath2 = "NONE";
    TextView tv, res;
    ProgressDialog progressDialog;
    Button b1,b2,b3;
    HttpEntity resEntity;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        tv = (TextView)findViewById(R.id.tv);
        res = (TextView)findViewById(R.id.res);
        tv.setText(tv.getText() + selectedPath1 + "," + selectedPath2);
        b1 = (Button)findViewById(R.id.Button01);
        b2 = (Button)findViewById(R.id.Button02);
        b3 = (Button)findViewById(R.id.upload);
        b1.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                openGallery(SELECT_FILE1);
            }
        });
        b2.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                openGallery(SELECT_FILE2);
            }
        });
        b3.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                if(!(selectedPath1.trim().equalsIgnoreCase("NONE")) && !(selectedPath2.trim().equalsIgnoreCase("NONE"))){
                    progressDialog = ProgressDialog.show(FileUploadTest.this, "", "Uploading files to server.....", false);
                     Thread thread=new Thread(new Runnable(){
                            public void run(){
                                doFileUpload();
                                runOnUiThread(new Runnable(){
                                    public void run() {
                                        if(progressDialog.isShowing())
                                            progressDialog.dismiss();
                                    }
                                });
                            }
                    });
                    thread.start();
                }else{
                            Toast.makeText(getApplicationContext(),"Please select two files to upload.", Toast.LENGTH_SHORT).show();
                }
            }
        });

    }

    public void openGallery(int req_code){

        Intent intent = new Intent();
        intent.setType("image/*");
        intent.setAction(Intent.ACTION_GET_CONTENT);
        startActivityForResult(Intent.createChooser(intent,"Select file to upload "), req_code);
   }

   public void onActivityResult(int requestCode, int resultCode, Intent data) {

        if (resultCode == RESULT_OK) {
            Uri selectedImageUri = data.getData();
            if (requestCode == SELECT_FILE1)
            {
                selectedPath1 = getPath(selectedImageUri);
                System.out.println("selectedPath1 : " + selectedPath1);
            }
            if (requestCode == SELECT_FILE2)
            {
                selectedPath2 = getPath(selectedImageUri);
                System.out.println("selectedPath2 : " + selectedPath2);
            }
            tv.setText("Selected File paths : " + selectedPath1 + "," + selectedPath2);
        }
    }

    public 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);
    }

    private void doFileUpload(){

        File file1 = new File(selectedPath1);
        File file2 = new File(selectedPath2);
        String urlString = "http://10.0.2.2/upload_test/upload_media_test.php";
        try
        {
             HttpClient client = new DefaultHttpClient();
             HttpPost post = new HttpPost(urlString);
             FileBody bin1 = new FileBody(file1);
             FileBody bin2 = new FileBody(file2);
             MultipartEntity reqEntity = new MultipartEntity();
             reqEntity.addPart("uploadedfile1", bin1);
             reqEntity.addPart("uploadedfile2", bin2);
             reqEntity.addPart("user", new StringBody("User"));
             post.setEntity(reqEntity);
             HttpResponse response = client.execute(post);
             resEntity = response.getEntity();
             final String response_str = EntityUtils.toString(resEntity);
             if (resEntity != null) {
                 Log.i("RESPONSE",response_str);
                 runOnUiThread(new Runnable(){
                        public void run() {
                             try {
                                res.setTextColor(Color.GREEN);
                                res.setText("n Response from server : n " + response_str);
                                Toast.makeText(getApplicationContext(),"Upload Complete. Check the server uploads directory.", Toast.LENGTH_LONG).show();
                            } catch (Exception e) {
                                e.printStackTrace();
                            }
                           }
                    });
             }
        }
        catch (Exception ex){
             Log.e("Debug", "error: " + ex.getMessage(), ex);
        }
      }
}

现在你的布局:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<TextView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="Multiple File Upload from CoderzHeaven"
    />
<Button
    android:id="@+id/Button01"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Get First File">
</Button>
<Button
    android:id="@+id/Button02"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Get Second File">
</Button>
<Button
    android:id="@+id/upload"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Start Upload">
</Button>
<TextView
    android:id="@+id/tv"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="Selected File path : "
    />

<TextView
    android:id="@+id/res"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:text=""
   />
</LinearLayout>

当然，在您的 list 中包含互联网许可:

<uses-permission android:name="android.permission.INTERNET" />

瞧瞧。无论如何，我在我的案例中遵循了这个例子:http://www.coderzheaven.com/2011/08/16/how-to-upload-multiple-files-in-one-request-along-with-other-string-parameters-in-android/试试看那里.. 有 4 种方法可以上传多个文件。看看你喜欢哪个