1. 首頁
  2. 問答
  3. 將圖像從Android發送到PHP

將圖像從Android發送到PHP

2017-08-09 212 views
0

我嘗試了3種不同的方法將圖像從Android發送到PHP。 這三個都給出了消息「缺少inp_image名稱」。我想我可能不是將圖像作爲圖像發送，而是作爲一些文本？ 我使用此http請求類中的Android：https://github.com/kevinsawicki/http-request將圖像從Android發送到PHP

方法1與它編碼爲base64：

   //String selectedFilePath = FilePath.getPath(context, imageUri); 
      BitmapFactory.Options options = new BitmapFactory.Options(); 
      options.inSampleSize = 4; 
      Bitmap bm = BitmapFactory.decodeFile(destImage,options); 
      ByteArrayOutputStream baos = new ByteArrayOutputStream(); 
      bm.compress(Bitmap.CompressFormat.JPEG,40,baos); 
      byte[] byteImage_photo = baos.toByteArray(); // bitmap object 

      //generate base64 string of image 
      String encodedImage = Base64.encodeToString(byteImage_photo,Base64.DEFAULT); 

      // Send image 
      HttpRequest request = HttpRequest.post(apiUrl); 
      request.part("inp_image", encodedImage); 

      stringResponse = request.body();

方法2 - 發送圖像

 HttpRequest request = HttpRequest.post(apiUrl); 
     request.part("inp_image", in); // sending input stream 
     stringResponse = request.body();

方法3的一個輸入流 - 發送文件：

String sourceFilename= FilePath.getPath(context, imageUri); 
      HttpRequest request = HttpRequest.post(apiUrl); 
      request.part("inp_image", new File(sourceFilename)); // sending input stream 
      stringResponse = request.body();

Android Mainifest：

<?xml version="1.0" encoding="utf-8"?> 


<uses-permission android:name="android.permission.INTERNET" /> 
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /> 
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> 
<application 
    android:allowBackup="true" 
    android:icon="@mipmap/ic_launcher" 
    android:label="@string/app_name" 
    android:roundIcon="@mipmap/ic_launcher_round" 
    android:supportsRtl="true" 
    android:theme="@style/AppTheme"> 
    <activity android:name=".MainActivity"> 
     <intent-filter> 
      <action android:name="android.intent.action.MAIN" /> 

      <category android:name="android.intent.category.LAUNCHER" /> 
     </intent-filter> 
    </activity> 
</application>

MainActivity：

package com.nettport.imageupload.imageupload; 

import android.Manifest; 
import android.content.Intent; 
import android.content.pm.PackageManager; 
import android.database.Cursor; 
import android.graphics.Bitmap; 
import android.graphics.BitmapFactory; 
import android.net.Uri; 
import android.os.Environment; 
import android.provider.MediaStore; 
import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.View; 
import android.widget.Button; 
import android.widget.ImageView; 
import android.widget.TextView; 
import android.widget.Toast; 

import org.w3c.dom.Text; 

import java.io.BufferedInputStream; 
import java.io.BufferedOutputStream; 
import java.io.File; 
import java.io.FileInputStream; 
import java.io.FileOutputStream; 
import java.io.IOException; 
import java.io.InputStream; 
import java.io.OutputStream; 
import java.nio.channels.FileChannel; 
import java.util.HashMap; 
import java.util.Map; 

public class MainActivity extends AppCompatActivity { 


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

     /* Check permission */ 
     checkPermissionRead(); 
     checkPermissionWrite(); 

     /* Button listener */ 
     buttonListener(); 
    } // onCreate 


    private void checkPermissionRead(){ 
     int MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE = 1; 
     if (checkSelfPermission(android.Manifest.permission.READ_EXTERNAL_STORAGE) 
       != PackageManager.PERMISSION_GRANTED) { 

      // Should we show an explanation? 
      if (shouldShowRequestPermissionRationale(
        android.Manifest.permission.READ_EXTERNAL_STORAGE)) { 
       // Explain to the user why we need to read the contacts 
      } 

      requestPermissions(new String[]{android.Manifest.permission.READ_EXTERNAL_STORAGE}, 
        MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE); 

      // MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE is an 
      // app-defined int constant that should be quite unique 

      return; 
     } 
    } // checkPermissionRead 

    private void checkPermissionWrite(){ 
     int MY_PERMISSIONS_REQUEST_WRITE_EXTERNAL_STORAGE = 1; 
     if (checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) 
       != PackageManager.PERMISSION_GRANTED) { 

      // Should we show an explanation? 
      if (shouldShowRequestPermissionRationale(
        android.Manifest.permission.WRITE_EXTERNAL_STORAGE)) { 
       // Explain to the user why we need to read the contacts 
      } 

      requestPermissions(new String[]{android.Manifest.permission.WRITE_EXTERNAL_STORAGE}, 
        MY_PERMISSIONS_REQUEST_WRITE_EXTERNAL_STORAGE); 

      // MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE is an 
      // app-defined int constant that should be quite unique 

      return; 
     } 
    } // checkPermissionRead 

    public void buttonListener() { 

     // Image button listener 
     Button buttonLoadImage = (Button) findViewById(R.id.buttonLoadImage); 
     buttonLoadImage.setOnClickListener(new View.OnClickListener(){ 
      @Override 
      public void onClick (View view){ 
       // Load gallery 
       // User can select images and upload them 
       // Result will be in onActivityResult 
       Intent pickPhoto = new Intent(Intent.ACTION_PICK, 
         android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI); 
       startActivityForResult(pickPhoto , 1);//one can be replaced with any action code 

      } 
     }); 
     // Camera 
     Button buttonLoadCamera = (Button) findViewById(R.id.buttonLoadCamera); 
     buttonLoadCamera.setOnClickListener(new View.OnClickListener(){ 
      @Override 
      public void onClick (View view){ 
       // Load camera 
       // Result will be in onActivityResult 
       Intent takePicture = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); 
       startActivityForResult(takePicture, 0);//zero can be replaced with any action code 

      } 
     }); 
    } // buttonListener 


    @Override 
    protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
     super.onActivityResult(requestCode, resultCode, data); 
     if (resultCode == RESULT_OK) { 
      Uri selectedImageUri = data.getData(); 

      // Set image 
      ImageView imageViewImage = (ImageView)findViewById(R.id.imageViewImage); 
      imageViewImage.setImageURI(selectedImageUri); 

      // Save image 
      String destinationFilename = savefile(selectedImageUri); 


      try { 
       InputStream in = getContentResolver().openInputStream(selectedImageUri); 

       TextView textViewDynamicText = (TextView) findViewById(R.id.textViewDynamicText); // Dynamic text 
       String apiURL = "https://xxxxxx.com/xxxxxx/image_upload.php"; 

       UploadImage task = new UploadImage(this, apiURL, in, selectedImageUri, destinationFilename, textViewDynamicText, new UploadImage.TaskListener() { 
        @Override 
        public void onFinished(String result) { 
         // Do Something after the task has finished 
         imageUploadResult(); 
        } 
       }); 
       task.execute(); 

       //in.close(); 
      } 
      catch (java.io.FileNotFoundException e) { 
       Toast.makeText(this, "MainAcrivity java.io.FileNotFoundException: " + e.toString(), Toast.LENGTH_LONG).show(); 
      } 
      catch (java.io.IOException e) { 
       Toast.makeText(this, "MainAcrivity java.io.IOException: " + e.toString(), Toast.LENGTH_LONG).show(); 
      } 

     } // RESULT_OK 
    } // onActivityResult 


    public void imageUploadResult(){ 
     // Dynamic text 
     TextView textViewDynamicText = (TextView)findViewById(R.id.textViewDynamicText); 
     Toast.makeText(this, textViewDynamicText.getText().toString(), Toast.LENGTH_SHORT).show(); 

    } // imageUploadResult 


    public String savefile(Uri sourceuri) { 
     String sourceFilename= FilePath.getPath(this, sourceuri); 
     String destinationPath = android.os.Environment.getExternalStorageDirectory().getPath()+File.separatorChar+"/Upload"; 
     String destinationFilename = destinationPath+"/upload_me.png"; 

     // Make dir 
     File folder = new File(destinationPath); 
     boolean success = true; 
     if (!folder.exists()) { 
      success = folder.mkdir(); 
     } 
     if (success) { 
     } else { 
      Toast.makeText(this, "Dir failed", Toast.LENGTH_LONG).show(); 
     } 


     BufferedInputStream bis = null; 
     BufferedOutputStream bos = null; 

     try { 
      bis = new BufferedInputStream(new FileInputStream(sourceFilename)); 
      bos = new BufferedOutputStream(new FileOutputStream(destinationFilename, false)); 
      byte[] buf = new byte[1024]; 
      bis.read(buf); 
      do { 
       bos.write(buf); 
      } while(bis.read(buf) != -1); 
      // Toast.makeText(this, "Saved to " + destinationFilename, Toast.LENGTH_LONG).show(); 
     } 
     catch (IOException e) { 
      e.printStackTrace(); 
      Toast.makeText(this, "savefile#1: " + e.toString() + "\nFrom: " + sourceFilename, Toast.LENGTH_LONG).show(); 
     } 
     finally { 
      try { 
       if (bis != null) bis.close(); 
       if (bos != null) bos.close(); 
      } 
      catch (IOException e) { 
       e.printStackTrace(); 
       Toast.makeText(this, "savefile#2: " + e.toString(), Toast.LENGTH_LONG).show(); 
      } 
     } 
     return destinationFilename; 
    } 
}

UploadImage類：

package com.nettport.imageupload.imageupload; 

import android.content.Context; 
import android.graphics.Bitmap; 
import android.graphics.BitmapFactory; 
import android.net.Uri; 
import android.os.AsyncTask; 
import android.os.Environment; 
import android.util.Base64; 
import android.widget.TextView; 
import android.widget.Toast; 

import java.io.ByteArrayOutputStream; 
import java.io.File; 
import java.io.FileInputStream; 
import java.io.FileOutputStream; 
import java.io.InputStream; 
import java.io.OutputStream; 

/** 
* Created by bruker on 08.08.2017. 
* Updated 
*/ 

public class UploadImage extends AsyncTask<String, Void, String> { 

    /* Class variables */ 
    private Context context; // Holder (this) 
    private String apiUrl; // URL for image upload form, example http://website.com/image_upload.php 
    private TextView dynamicText; 
    private InputStream in; 
    private Uri imageUri; 
    private String destImage; 

    private final UploadImage.TaskListener taskListener; // This is the reference to the associated listener 


    public interface TaskListener { 
     public void onFinished(String result); 
    } 

    /*- Constructor GET, SEND --------------------------------------------------------------- */ 
    public UploadImage(Context ctx, String applicationPIUrl, InputStream input, Uri selectedImageUri, String destinationFilename, TextView textViewDynamicText, UploadImage.TaskListener listener) { 
     context    = ctx; 
     apiUrl    = applicationPIUrl; 
     in     = input; 
     imageUri   = selectedImageUri; 
     destImage = destinationFilename; 
     dynamicText   = textViewDynamicText; 
     this.taskListener = listener; // The listener reference is passed in through the constructor 
    } 

    @Override 
    protected void onPreExecute() { 
     super.onPreExecute(); 
     dynamicText.setText(dynamicText.getText().toString() + "\n" + "Loading..."); 
    } 


    @Override 
    protected String doInBackground(String... params) { 
     // Run methods 
     String stringResponse =""; 
     try { 
      try{ 

       // Method 1 - Base 64 
       /* 
       BitmapFactory.Options options = new BitmapFactory.Options(); 
       options.inSampleSize = 4; 
       Bitmap bm = BitmapFactory.decodeFile(destImage,options); 
       ByteArrayOutputStream baos = new ByteArrayOutputStream(); 
       bm.compress(Bitmap.CompressFormat.JPEG,40,baos); 
       byte[] byteImage_photo = baos.toByteArray(); // bitmap object 

       //generate base64 string of image 
       String encodedImage = Base64.encodeToString(byteImage_photo,Base64.DEFAULT); 

       // Send image 
       HttpRequest request = HttpRequest.post(apiUrl); 
       request.part("inp_image", encodedImage); 
       stringResponse = request.body(); 
       */ 



       // Method 2 - Input stream 
       /* 
       HttpRequest request = HttpRequest.post(apiUrl); 
       request.part("inp_image", in); // sending input stream 
       stringResponse = request.body(); 
       */ 


       // Method 3 - File 
       String sourceFilename= FilePath.getPath(context, imageUri); 
       HttpRequest request = HttpRequest.post(apiUrl); 
       request.part("inp_image", new File(sourceFilename)); // sending input stream 
       stringResponse = request.body(); 


      } 
      catch (Exception e){ 
       return e.toString(); 
      } 
     } 
     catch(Exception e){ 
      return e.toString(); 
     } 
     return stringResponse; 
    } 

    @Override 
    protected void onPostExecute(String result) { 
     // Set text view with result string 
     if(dynamicText == null){ 
      Toast.makeText(context, "NULL", Toast.LENGTH_SHORT).show(); 
     } 
     else { 
      dynamicText.setText(dynamicText.getText().toString() + "\n" + result); 
     } 
     // In onPostExecute we check if the listener is valid 
     if(this.taskListener != null) { 
      // And if it is we call the callback function on it. 
      this.taskListener.onFinished(result); 
     } 
    } 

    @Override 
    protected void onProgressUpdate(Void... values) {} 

}

PHP腳本：

<?php 
/** 
* 
* File: image_upload.php 
* Date 13:05 04.08.2017 
* Version 1 
* Copyright (c) 2017 S. A. Ditlefsen 
* License: http://opensource.org/licenses/gpl-license.php GNU Public License 
* 
*/ 

/*- Get extention ---------------------------------------------------------------------- */ 
function getExtension($str) { 
     $i = strrpos($str,"."); 
     if (!$i) { return ""; } 
     $l = strlen($str) - $i; 
     $ext = substr($str,$i+1,$l); 
     return $ext; 
} 

/*- Path -------------------------------------------------------------------------------- */ 
if(!(is_dir("_images"))){ 
    mkdir("_images"); 
} 

/*- Script start ------------------------------------------------------------------------ */ 
$name = stripslashes($_FILES['inp_image']['name']); 
if($name){ 
    $extension = getExtension($name); 
    $extension = strtolower($extension); 
    if (($extension != "jpg") && ($extension != "jpeg") && ($extension != "png") && ($extension != "gif")) { 
     echo"unknown_file_extension"; 
    } 
    else{ 
     $date_time = date("Y-m-d_h-i-s"); 
     $new_name = $date_time . ".png"; 
     $new_path = "_images/"; 
     $uploaded_file = $new_path . $new_name; 

     // Upload file 
     if (move_uploaded_file($_FILES['inp_image']['tmp_name'], $uploaded_file)) { 
      // Get image size 
      $file_size = filesize($uploaded_file); 

      // Check with and height 
      list($width,$height) = getimagesize($uploaded_file); 

      if($width == "" OR $height == ""){ 
       echo"getimagesize_failed"; 
      } 
      else{ 
       // Resize to $settings_image_width 
       $newwidth=1000; 
       $newheight=($height/$width)*$newwidth; // 667 
       $tmp=imagecreatetruecolor($newwidth,$newheight); 

       if($extension=="jpg" || $extension=="jpeg"){ 
        $src = imagecreatefromjpeg($uploaded_file); 
       } 
       else if($extension=="png"){ 
        $src = imagecreatefrompng($uploaded_file); 
       } 
       else{ 
        $src = imagecreatefromgif($uploaded_file); 
       } 

       imagecopyresampled($tmp,$src,0,0,0,0,$newwidth,$newheight, $width,$height); 


       imagepng($tmp,$uploaded_file); 

       imagedestroy($tmp); 

       echo"$new_name"; 
      } // width height 
     } // move_uploaded_file 
     else{ 
      switch ($_FILES['inp_food_image_b']['error']) { 
       case UPLOAD_ERR_OK: 
        echo"image_to_big"; 
        break; 
       case UPLOAD_ERR_NO_FILE: 
         echo"no_file_uploaded"; 
        break; 
       case UPLOAD_ERR_INI_SIZE: 
         echo"to_big_size_in_configuration"; 
        break; 
       case UPLOAD_ERR_FORM_SIZE: 
         echo"to_big_size_in_form"; 
        break; 
       default: 
         echo"unknown_error"; 
        break; 
      } 
     } 
    } // extention 
} // name 
else{ 
    echo"Missing inp_image name"; 
} 

?>

來源

2017-08-09 Solo

回答

1

試試這個，它是爲我工作，

String imgstring = getStringImage(bitmap) 



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; 
    }

凌空

public void addimage() { 
     String link = CommonVariables.SERVER_IP + "/uploadimage.php"; 

     StringRequest request = new StringRequest(Request.Method.POST, link, new Response.Listener<String>() { 
      @Override 
      public void onResponse(String response) { 

       } 
      } 
     }, new Response.ErrorListener() { 
      @Override 
      public void onErrorResponse(VolleyError volleyError) { 
       if (volleyError != null && volleyError.getMessage() != null) { 
        Toast.makeText(getContext(), volleyError.getMessage(), Toast.LENGTH_LONG).show(); 
       } else { 
        Toast.makeText(getContext(), "Something went wrong", Toast.LENGTH_LONG).show(); 

       } 
      } 
     }) { 
      @Override 
      protected Map<String, String> getParams() { 
       Map<String, String> params = new HashMap<String, String>(); 
      params.put("imagename", "yourimagename"); 
       params.put("imagecode", imageString); 
       return params; 
      } 
     }; 

     RetryPolicy mRetryPolicy = new DefaultRetryPolicy(
       0, 
       DefaultRetryPolicy.DEFAULT_MAX_RETRIES, 
       DefaultRetryPolicy.DEFAULT_BACKOFF_MULT); 

     request.setRetryPolicy(mRetryPolicy); 

     queue.add(request); 
    }

PHP

<?php 

if($_SERVER['REQUEST_METHOD']=='POST'){ 


$imgcode = $_POST['imagecode']; 
$imagename = $_POST['imagename']; 


require_once('dbconnect.php'); 

// this is ths path where your image is stored in the file in server 
$path = "images/$imagename.jpg"; 

$sql = "INSERT INTO productlist(proimagename) 
     VALUES ('$imagename')"; 

if(mysqli_query($con,$sql)){ 
file_put_contents($path,base64_decode($imgcode)); 
echo "1"; 
} 

mysqli_close($con); 
}else{ 
echo "0"; 
}

來源

2017-08-09 13:30:50

+0

謝謝！發送它作爲基礎64，並解碼爲服務器上的基礎64爲我工作。 – Solo

相關問題

 相關問題