如何使用 php 將使用 android 設備捕獲的圖像上傳到 mysql 數據庫？

Question

我是 android 的新手，我正在嘗試將圖像上傳到 mysql 服務器。 在我的應用程序中，當用戶單擊按鈕時，我有一個名為上傳圖像的按鈕，它將在 android 設備中打開一個攝像頭。 我在 imageview 中使用相機成功獲取了捕獲的圖像，我想使用 php 將此圖像保存在 mysql 數據庫中，我使用 php 成功連接到數據庫並上傳了在 edittext 中輸入的幾個字段，但我無法上傳圖像。 我用谷歌搜索，但都顯示帶有 url 的上傳圖片。 但就我而言，查看我的代碼並沒有什么不同，請幫助我。

表單活動.java

public class FormActivity extends Activity {

final Context context = this;
private ProgressDialog pDialog;
static final String TAG_SUCCESS = "success";
JSONParser jsonParser = new JSONParser();
private static String url_submit_hourly = "http://www.example.com/FacebookApp/submit.php";

EditText tasktitle;

String title;
Button upload, submit;

private static final int CAMERA_REQUEST = 1888;
private ImageView imageView;
byte[] byteArray;
protected static final int TAKE_PHOTO_CODE = 0;
byte[] imgbyte;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.submit_hourly);

    tasktitle = (EditText) findViewById(R.id.etfirst);

    submit = (Button) findViewById(R.id.submit);
    submit.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            new BookSlot().execute();
        }
    });

    upload = (Button) findViewById(R.id.upload);
    this.imageView = (ImageView) this.findViewById(R.id.image);
    upload.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
            startActivityForResult(intent, CAMERA_REQUEST);
        }

    });

}

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == CAMERA_REQUEST && resultCode == RESULT_OK) {
        Bitmap photo = (Bitmap) data.getExtras().get("data");
        imageView.setImageBitmap(photo);

    }

}

class BookSlot extends AsyncTask<String, String, String> {
    @Override
    protected void onPreExecute() {
        super.onPreExecute();
        pDialog = new ProgressDialog(FormActivity.this);
        pDialog.setMessage("Creating Hourly..");
        pDialog.setIndeterminate(false);
        pDialog.setCancelable(true);
        pDialog.show();
    }

    @Override
    protected String doInBackground(String... args) {


        title = tasktitle.getText().toString();


        List<NameValuePair> params = new ArrayList<NameValuePair>();

        params.add(new BasicNameValuePair("task_tilte", title));

        JSONObject json = jsonParser.makeHttpRequest(url_submit_hourly,
                "POST", params);

        // check log cat fro response
        Log.d("Create Response", json.toString());

        // check for success tag
        try {
            int success = json.getInt(TAG_SUCCESS);

            if (success == 1) {
                // successfully created product
                Intent i = new Intent(getApplicationContext(),
                        FacebookLoginActivity.class);

                startActivity(i);

                // closing this screen
                finish();
            } else {
                // failed to create product
            }
        } catch (JSONException e) {
            e.printStackTrace();
        }
        return null;
    }

    /**
     * After completing background task Dismiss the progress dialog
     * **/
    protected void onPostExecute(String file_url) {
        // dismiss the dialog once done
        pDialog.dismiss();
    }

}

}

提交.php

<?php


// array for JSON response
$response = array();

// check for required fields
if (isset($_POST['task_tilte'])) {

$title = $_POST['task_tilte'];


// include db connect class
define('__ROOT__', dirname(dirname(__FILE__))); 
require_once(__ROOT__.'/FacebookApp/db_connect.php'); 

// connecting to db
$db = new DB_CONNECT();

// mysql inserting a new row
$result = mysql_query("INSERT INTO                       task_table(task_tilte)     VALUES('$title')");

// check if row inserted or not
if ($result) {
    // successfully inserted into database
    $response["success"] = 1;
    $response["message"] = "Product successfully created.";

    // echoing JSON response
    echo json_encode($response);
} else {
    // failed to insert row
    $response["success"] = 0;
    $response["message"] = "Oops! An error occurred.";

    // echoing JSON response
    echo json_encode($response);
}
} else {
// required field is missing
$response["success"] = 0;
$response["message"] = "Required field(s) is missing";

// echoing JSON response
echo json_encode($response);
}
?>

我不知道如何將 imageview 中的圖像保存到 mysql 數據庫。

Answer 1

試試這個 ：

Bitmap bitmap = BitmapFactory.decodeResource(getResources(),R.drawable.icon);           ByteArrayOutputStream stream = new ByteArrayOutputStream();
            bitmap.compress(Bitmap.CompressFormat.PNG, 90, stream); //compress to which format you want.
            byte [] byte_arr = stream.toByteArray();
            String image_str = Base64.encodeBytes(byte_arr);
            ArrayList<NameValuePair> nameValuePairs = new  ArrayList<NameValuePair>();

            nameValuePairs.add(new BasicNameValuePair("image",image_str));

             Thread t = new Thread(new Runnable() {

            @Override
            public void run() {
                  try{
                         HttpClient httpclient = new DefaultHttpClient();
                         HttpPost httppost = new HttpPost("http://10.0.2.2/Upload_image_ANDROID/upload_image.php");
                         httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
                         HttpResponse response = httpclient.execute(httppost);
                         String the_string_response = convertResponseToString(response);
                         runOnUiThread(new Runnable() {

                                @Override
                                public void run() {
                                    Toast.makeText(UploadImage.this, "Response " + the_string_response, Toast.LENGTH_LONG).show();                          
                                }
                            });

                     }catch(Exception e){
                          runOnUiThread(new Runnable() {

                            @Override
                            public void run() {
                                Toast.makeText(UploadImage.this, "ERROR " + e.getMessage(), Toast.LENGTH_LONG).show();                              
                            }
                        });
                           System.out.println("Error in http connection "+e.toString());
                     }  
            }
        });
         t.start();


public String convertResponseToString(HttpResponse response) throws IllegalStateException, IOException{

             String res = "";
             StringBuffer buffer = new StringBuffer();
             inputStream = response.getEntity().getContent();
             int contentLength = (int) response.getEntity().getContentLength(); //getting content length…..
              runOnUiThread(new Runnable() {

            @Override
            public void run() {
                Toast.makeText(UploadImage.this, "contentLength : " + contentLength, Toast.LENGTH_LONG).show();                     
            }
        });

             if (contentLength < 0){
             }
             else{
                    byte[] data = new byte[512];
                    int len = 0;
                    try
                    {
                        while (-1 != (len = inputStream.read(data)) )
                        {
                            buffer.append(new String(data, 0, len)); //converting to string and appending  to stringbuffer…..
                        }
                    }
                    catch (IOException e)
                    {
                        e.printStackTrace();
                    }
                    try
                    {
                        inputStream.close(); // closing the stream…..
                    }
                    catch (IOException e)
                    {
                        e.printStackTrace();
                    }
                    res = buffer.toString();     // converting stringbuffer to string…..

                    runOnUiThread(new Runnable() {

                    @Override
                    public void run() {
                       Toast.makeText(UploadImage.this, "Result : " + res, Toast.LENGTH_LONG).show();
                    }
                });
                    //System.out.println("Response => " +  EntityUtils.toString(response.getEntity()));
             }
             return res;
        }

Answer 2

嘗試將圖像轉換為 base_64，然后發送到 PHP 以將其存儲在 MySQL 中，當從 MySQL 讀取它時，您需要對其進行解碼