如何使用 web api 将图像和文本从 android 应用程序发送到 sql server

Posted 2023-03-09

【中文标题】如何使用 web api 将图像和文本从 android 应用程序发送到 sql server

【英文标题】：How to send Image and text from android application to sql server using web api

【发布时间】：2017-09-24 18:34:11

【问题描述】：

我可以单独发送图片和文字，但我想同时发送图片和文字 请任何人帮助我

【问题讨论】：

在此处发布问题前请先搜索

【参考方案1】：

使用多部分。使用多部分，您可以使用文本数据发送图像视频和其他文件。各种库可用于多部分发送数据。离子就是其中之一

【参考方案2】：

一种方法是您可以在 web api 中将图像转换为 Base64 字符串

public static String imageToString(Bitmap BitmapData) 

        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        BitmapData.compress(Bitmap.CompressFormat.PNG, 100, bos);
        byte[] byte_arr = bos.toByteArray();

        String file = Base64.encodeToString(byte_arr, Base64.DEFAULT);
        //appendLog(file);
        return file;

您可以在上述函数中将位图图像转换为 Base64 字符串，并在您的 api 中传递字符串参数并在服务器端解码这些字符串

【参考方案3】：

感谢大家，特别感谢 Bhupat Bheda。我完成了我的全部项目。现在我想分享我的研究。

private void saveText() 

    String image= getStringImage(rotatedBMP);
    ImageCapture imageCapture = new ImageCapture();

    imageCapture.Name = prescriptionName.getText().toString();
    imageCapture.Remarks = remarks.getText().toString();
    imageCapture.ImageURL=mCurrentPhotoPath;
    imageCapture.PhotoName=photoName;
    imageCapture.Image=image;

    imageCapture.Id = _ImageId_Id;
    if (_ImageId_Id == 0) 
        restService.getService().InsertPrescription(imageCapture, new Callback<ImageCapture>() 
            @Override
            public void success(ImageCapture imageCapture, Response response) 
                Toast.makeText(Prescription.this, "New Record Inserted.", Toast.LENGTH_LONG).show();

                Intent intent=new Intent(getApplicationContext(),Home.class);
                startActivity(intent);
            

            @Override
            public void failure(RetrofitError error) 
                Toast.makeText(Prescription.this, error.getMessage().toString(), Toast.LENGTH_LONG).show();

            
        );
    



private void takePhoto() 
    dispatchTakePictureIntent();






@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) 
    // TODO Auto-generated method stub
    Log.i(TAG, "onActivityResult: " + this);
    if (requestCode == REQUEST_TAKE_PHOTO && resultCode == Activity.RESULT_OK) 
        setPic();
    


String mCurrentPhotoPath;
String photoName;

static final int REQUEST_TAKE_PHOTO = 1;
File photoFile = null;

private void dispatchTakePictureIntent() 
    Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    // Ensure that there's a camera activity to handle the intent
    if (takePictureIntent.resolveActivity(getPackageManager()) != null) 
        // Create the File where the photo should go
        File photoFile = null;
        try 
            photoFile = createImageFile();
         catch (IOException ex) 
            // Error occurred while creating the File

        
        // Continue only if the File was successfully created
        if (photoFile != null) 
            takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT,
                    Uri.fromFile(photoFile));
            startActivityForResult(takePictureIntent, REQUEST_TAKE_PHOTO);
        
    




public String getStringImage(Bitmap bmp) 
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    bmp.compress(Bitmap.CompressFormat.JPEG, 100, baos);
    byte[] imageBytes = baos.toByteArray();
    String encodedImage = Base64.encodeToString(imageBytes, Base64.DEFAULT);
    return encodedImage;

了解详情[如何使用 web api 将图像和文本从 android 应用程序发送到 sql server][1]

https://esoftpanel.blogspot.com/2017/04/how-to-send-image-and-text-from-android.html