用于上传文件的 php 已调用，但文件未存储

Question

我正在尝试将 .png 文件上传到我的服务器。 php 被调用并返回，但文件永远不会上传。我的代码中一定有一些小故障，但我就是找不到。

Bitmap myBitmap = BitmapFactory.decodeFile(imgFile.getAbsolutePath());
if(myBitmap!=null){
    pixels = new byte[myBitmap.getWidth() * myBitmap.getHeight()];
    for (int i = 0; i < myBitmap.getWidth(); ++i) {
        for (int j = 0; j < myBitmap.getHeight(); ++j) {
            pixels[i + j] = (byte) ((myBitmap.getPixel(i, j) & 0x80) >> 7);
        }
    }
}
HttpURLConnection connectionWWW = (HttpURLConnection) url.openConnection();
connectionWWW.setChunkedStreamingMode(0);//3.0
connectionWWW.setReadTimeout(100000);
String boundary =  "*****"; 
String attachmentFileName = "screenshot.png";
String crlf = "\r\n";
String twoHyphens = "--";

if(imgFile.exists()){
    connectionWWW.setUseCaches(false);//3.0
    connectionWWW.setDoOutput(true);
    connectionWWW.setDoInput(true);
    connectionWWW.setRequestMethod("POST");
    connectionWWW.setRequestProperty("Connection", "Keep-Alive");

    connectionWWW.setRequestProperty("ENCTYPE", "multipart/form-data");
    connectionWWW.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);
    connectionWWW.setRequestProperty("uploaded_file", attachmentFileName);

    DataOutputStream request = new DataOutputStream(connectionWWW.getOutputStream());

    request.writeBytes(twoHyphens + boundary + crlf);

    request.writeBytes("Content-Disposition: form-data; name=\"uploaded_file\"; filename=\"" + attachmentFileName + "\"" + crlf);
    request.writeBytes(crlf);

    request.write(pixels);

    request.writeBytes(crlf);
    request.writeBytes(twoHyphens + boundary + twoHyphens + crlf);
    request.flush();
    request.close();
}

in = new BufferedInputStream(connectionWWW.getInputStream());

String res = convertStreamToString(in);

connectionWWW.disconnect();//3.0

PHP:

$uploaddir = './android/';
$file = basename($_FILES['uploaded_file']['name']);
$filet = basename($_FILES['uploaded_file']['tmp_name']);
$uploadfile = $uploaddir . $file;
$rec="/android/".$file;
echo $rec;

$rec 总是回答“./android”——$file 是空的

Answer 1

如果您还没有使用 move_uploaded_file()，请尝试以下操作功能。

这就是使用 PHP 上传文件的方式。另外你在 $filet

中有一个 t

$filet = basename($_FILES['uploaded_file']['tmp_name']);

这样就可以了。

看看这是否有效:

$file_path = "./android/"; // assuming running code from root

$file_path = $file_path . basename( $_FILES['uploaded_file']['name']);
if(move_uploaded_file($_FILES['uploaded_file']['tmp_name'], $file_path)) {

    $uploadfile = $uploaddir . $file_path;
    $rec="/android/".$file_path;
    echo $rec;

    echo "success";
} else{
    echo "fail";
}

此外，请确保该文件夹具有适当的写入权限。

脚注:

我不确定 /android/ 和 ./android/ 其中之一可能需要更改以反射(reflect)彼此相同。