图片没有上传到服务器

Question

我正在开发应该具有将图像上传到服务器的功能的项目。在 MainActivity 中，我有 3 个选项卡。第一个选项卡有 2 个按钮，用于从图库中捕获图像和 select 图像。在 select 拍摄或捕获图像后，将显示到名为上传 activity 的新 Activity。此上传 activity 有 1 个图像视图和 1 个按钮上传图像。我能够显示图像，但上传图像时出现问题。单击上传按钮后，来自服务器的响应没有错误 logcat 我的图像仍然没有上传到服务器。

上传Activity

public class Upload extends AppCompatActivity{

public static String URL = "https://smilestechno.000webhostapp.com/upload.php";
String filepath;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_upload);

    final Button btnUpload = (Button) findViewById(R.id.btnUpload);

    ImageView imageview = (ImageView) findViewById(R.id.imageview);
    Intent intent = getIntent();
    if (intent == null){
        return;
    }
    final Uri imageUri = Uri.parse(intent.getStringExtra("image"));
    filepath = getPath(Upload.this, imageUri);

imageview.setImageURI(imageUri);

    btnUpload.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {

            if (filepath != null){
                imageUpload(filepath);

            }else {
                Toast.makeText(Upload.this, "Image not Selected", Toast.LENGTH_SHORT).show();
            }
        }
    });
 }

 private void imageUpload(final String imagePath){
     SimpleMultiPartRequest smr =  new SimpleMultiPartRequest(Request.Method.POST, URL, new Response.Listener<String>() {
         @Override
         public void onResponse(String response) {
             try {
                 JSONObject jsonObject = new JSONObject(response);
                 Toast.makeText(Upload.this, "Image Uploaded", Toast.LENGTH_SHORT).show();

             } catch (JSONException e) {
                 e.printStackTrace();
             }
         }
     }, new Response.ErrorListener() {
         @Override
         public void onErrorResponse(com.android.volley.error.VolleyError error) {
             Toast.makeText(getApplicationContext(), error.getMessage(), Toast.LENGTH_SHORT).show();
         }
     });
     smr.addFile("img", imagePath);
     MyApplication.getInstance().addToRequestQueue(smr);
 }


public static String getPath(Context context, Uri contentUri) {
    //copy file and send new file path
    File TEMP_DIR_PATH = new File(Environment.getExternalStorageDirectory(), "/My Children/Temp");
    TEMP_DIR_PATH.mkdir();
    String fileName = getFileName(contentUri);
    if (!TextUtils.isEmpty(fileName)) {
        File copyFile = new File(TEMP_DIR_PATH + File.separator + fileName);
        copy(context, contentUri, copyFile);
        return copyFile.getAbsolutePath();
    }
    return null;
}

public static String getFileName(Uri uri) {
    if (uri == null) return null;
    String fileName = null;
    String path = uri.getPath();
    int cut = path.lastIndexOf('/');
    if (cut != -1) {
        fileName = path.substring(cut + 1);
    }
    return fileName;
}

public static void copy(Context context, Uri srcUri, File dstFile) {
    try {
        InputStream inputStream = context.getContentResolver().openInputStream(srcUri);
        if (inputStream == null) return;
        OutputStream outputStream = new FileOutputStream(dstFile);
        org.apache.commons.io.IOUtils.copy(inputStream, outputStream);
        inputStream.close();
        outputStream.close();
    } catch (IOException e) {
        e.printStackTrace();
    }
}
}

PHP 脚本

<?php

$uploaddir = 'ImagesUpload/';
$uploadfile = $uploaddir . basename($_FILES['uploadedfile']['name']);
echo "<p>";

if (copy($_FILES['uploadedfile']['tmp_name'], $uploadfile)) 
{
  echo "File is valid, and was successfully uploaded.\n";
  $servername = "localhost";
    $username = "xyz";
$password = "xyz";
$dbname = "xyz";

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) 
{
die("Connection failed: " . $conn->connect_error);
} 

 $filename="ImagesUpload/".$_FILES["uploadedfile"]["name"];
$sql = "INSERT INTO ImgInfo (ImgStatus, ImgLink,ImgUploadDate) VALUES ('0', '$filename',CURRENT_TIMESTAMP)";

if ($conn->query($sql) === TRUE) 
{
echo "New record created successfully";
} else 
{
echo "Error: " . $sql . "<br>" . $conn->error;
}

$conn->close();

} 
else 
{
   echo "Upload failed";
}

echo "</p>";
echo '<pre>';
echo 'Here is some more debugging info:';
print_r($_FILES);
print "</pre>";

?>

我试过这个脚本。我创建了 html 页面，我可以使用此脚本从 html 上传图片。

Answer 1

IMO 你将错误的 key value 图像传递给 php 检查下面的代码

<?php

$uploaddir = 'ImagesUpload/';
$uploadfile = $uploaddir . basename($_FILES['img']['name']); //change here key as mentioned in java file.
echo "<p>";

if (copy($_FILES['img']['tmp_name'], $uploadfile)) 
{
  echo "File is valid, and was successfully uploaded.\n";
  $servername = "localhost";
    $username = "xyz";
$password = "xyz";
$dbname = "xyz";

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) 
{
die("Connection failed: " . $conn->connect_error);
} 

 $filename="ImagesUpload/".$_FILES["img"]["name"];
$sql = "INSERT INTO ImgInfo (ImgStatus, ImgLink,ImgUploadDate) VALUES ('0', '$filename',CURRENT_TIMESTAMP)";

if ($conn->query($sql) === TRUE) 
{
echo "New record created successfully";
} else 
{
echo "Error: " . $sql . "<br>" . $conn->error;
}

$conn->close();

} 
else 
{
   echo "Upload failed";
}

echo "</p>";
echo '<pre>';
echo 'Here is some more debugging info:';
print_r($_FILES);
print "</pre>";

?>

或

保持你之前的 php 文件原样并使用 uploadedfile 而不是 img 在 imageUpload(final String imagePath)

中更改下面的代码

  smr.addFile("uploadedfile", imagePath); //change key here.
     MyApplication.getInstance().addToRequestQueue(smr);

Answer 2

正在加载页面 https://smilestechno.000webhostapp.com/upload.php（通过 GET）结果

Notice: Undefined index: uploadedfile in /storage/ssd1/323/4193323/public_html/upload.php on line 4

Notice: Undefined index: uploadedfile in /storage/ssd1/323/4193323/public_html/upload.php on line 7

Warning: copy(): Filename cannot be empty in /storage/ssd1/323/4193323/public_html/upload.php on line 7 Upload failed

Here is some more debugging info:Array ( )

所以你首先需要测试你正在处理一个 POST 请求并且 $_FILES 数组已经被填充。

实际上 move/save 您使用 move_uploaded_file 而不是 copy 的文件，您应该通过测试 error 中的值来测试上传是否成功11=]数组。可以进行更多测试以确定文件扩展名、大小、MIME 类型等 - 所有这些都可以分叉处理。

下面使用准备好的语句来希望防止 sql 注入...

<?php

    if( $_SERVER['REQUEST_METHOD']=='POST') && !empty( $_FILES['uploadedfile'] ) ){
        try{

            $obj=(object)$_FILES['uploadedfile'];
            $name=$obj->name;
            $size=$obj->size;
            $tmp=$obj->tpm_name;
            $type=$obj->type;
            $error=$obj->error;


            if( $error == UPLOAD_ERR_OK && is_uploaded_file( $tmp ) ){
                $uploaddir = 'ImagesUpload/';
                $uploadfile = $uploaddir . basename( $name );

                $status = move_uploaded_file( $tmp, $uploadfile );
                if( $status ){

                    $servername = "localhost";
                    $username = "xyz";
                    $password = "xyz";
                    $dbname = "xyz";

                    $conn = new mysqli($servername, $username, $password, $dbname);

                    $filename="$uploaddir/$name";
                    $sql='insert into imginfo (imgstatus, imglink,imguploaddate) values ( '0', ?, CURRENT_TIMESTAMP )';
                    $stmt=$conn->prepare( $sql );
                    if( $stmt ){

                        $stmt->bind_param('s',$filename);
                        $result=$stmt->execute();

                        $message=$result ? 'New record created successfully' : 'Upload failed';
                        /* you could also add this to display a message but generally better to redirect the user */
                        #throw new Exception( $message );

                    } else {
                        throw new Exception('failed to prepare sql');
                    }
                } else {
                    throw new Exception('Failed to move file - check permissions');
                }
            } else {
                throw new Exception('bad foo');
            }
        }catch( Exception $e ){
            echo $e->getMessage();
        }
    }
?>

图片没有上传到服务器

Image is not uploading to the server

php

android

image-uploading

android-volley