Android (Java) 文件上传到 PHP servar 失败，Android 4.03

Question

我们已经成功地为我们的游戏使用了一个脚本，该脚本连接到一个 php 文件，以便将文件上传到远程服务器。当我们升级到 Android 4.03 时，脚本突然无法连接到服务器，我们不知道为什么。它适用于 Android 2.3.4 及更早版本。

public static String uploadOrderFile(Context c) {
String error = "";

HttpURLConnection conn = null;
DataOutputStream dos = null;
DataInputStream inStream = null;
FileInputStream fileInputStream = null;

String exsistingFileName = String.format("orders%d.ser", empire.getId());
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary =  "*****";

int bytesRead, bytesAvailable, bufferSize;
byte[] buffer;
int maxBufferSize = 1*1024*1024;
String responseFromServer = "";

try {
    //------------------ CLIENT REQUEST
    // Opening streams.
    if(settings.isSaveToExternalStorage()) {
        File file = new File(Environment.getExternalStorageDirectory(), String.format("%sorders%s.ser", c.getString(R.string.pathExternalStorage), empire.getId()));
        fileInputStream = new FileInputStream(file);
    }
    else {
        fileInputStream = c.openFileInput(exsistingFileName);
    }

    // open a URL connection to the Servlet
    String s = c.getString(R.string.webPageOrders);
    URL url = new URL(s);
    // Open a HTTP connection to the URL
    conn = (HttpURLConnection) url.openConnection();
    // Allow Inputs
    conn.setDoInput(true);
    // Allow Outputs
    conn.setDoOutput(true);
    // Don't use a cached copy.
    conn.setUseCaches(false);
    // Use a post method.
    conn.setRequestMethod("POST");
    conn.setRequestProperty("Connection", "Keep-Alive");
    conn.setRequestProperty("Content-Type", "multipart/form-data;boundary="+boundary);

    dos = new DataOutputStream( conn.getOutputStream() );
    dos.writeBytes(twoHyphens + boundary + lineEnd);
    dos.writeBytes(String.format("Content-Disposition: form-data; name=\"uploadedfile\";filename=\"%s\"%s", exsistingFileName, lineEnd));
    dos.writeBytes(lineEnd);

    // create a buffer of maximum size
    bytesAvailable = fileInputStream.available();
    bufferSize = Math.min(bytesAvailable, maxBufferSize);
    buffer = new byte[bufferSize];

    // read file and write it into form...
    bytesRead = fileInputStream.read(buffer, 0, bufferSize);

    while (bytesRead > 0) {
        dos.write(buffer, 0, bufferSize);
        bytesAvailable = fileInputStream.available();
        bufferSize = Math.min(bytesAvailable, maxBufferSize);
        bytesRead = fileInputStream.read(buffer, 0, bufferSize);
    }

    // send multipart form data necesssary after file data...
    dos.writeBytes(lineEnd);
    dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
}
catch(FileNotFoundException fnfe) {
    error = "Error. Couldn't find the order file internally.";
    Log.e(TAG, error, fnfe);
}
catch (MalformedURLException murle) {
    error = "Error. Couldn't create correct file URL.";
    Log.e(TAG, error, murle);
}
catch(ProtocolException pe) {
    error = "Error. Couldn't upload the order file to server.";
    Log.e(TAG, error, pe);
}
catch (IOException ioe) {
    error = "Error. Couldn't upload the order file to server.";
    Log.e(TAG, error, ioe);
}
finally {
    try {
        // Closing streams and connections.
        if(fileInputStream != null) {
            fileInputStream.close();
        }
        if(conn != null) {
            conn.disconnect();
        }
        if(dos != null) {
            dos.flush();
            dos.close();
        }
    }
    catch(IOException ioe) {
        error = "Error. Couldn't disconnect internet stream buffers.";
        Log.e(TAG, error, ioe);
    }
}
if(!error.equals("")) {
    return error;
}
//Reading the server response.
try {
    inStream = new DataInputStream ( conn.getInputStream() );
    String str;
    while (( str = inStream.readLine()) != null) {
        responseFromServer += str;
    }
}
catch (IOException ioe){
    error = "Error. Couldn't read server response.";
    Log.e(TAG, error, ioe);
}
finally {
    try {
        // Closing streams.
        if(inStream != null) {
            inStream.close();
        }
    }
    catch(IOException ioe) {
        error = "Error. Couldn't disconnect internet stream buffers.";
        Log.e(TAG, error, ioe);
    }
}
return error;}

在服务器上，我们有以下 PHP 文件：

<?php

// Where the file is going to be placed 
$target_path = "orders/";

/* Add the original filename to our target path.  
Result is "orders/filename.extension" */
$target_path = $target_path . basename( $_FILES['uploadedfile']['name']); 

if(move_uploaded_file($_FILES['uploadedfile']['tmp_name'], $target_path)) {

  echo "The file ".  basename( $_FILES['uploadedfile']['name']).
    " has been uploaded";
    chmod ("orders/".basename( $_FILES['uploadedfile']['name']), 0644);

} 
else{

echo "There was an error uploading the file, please try again!";
echo "filename: " .  basename( $_FILES['uploadedfile']['name']);
echo "target_path: " .$target_path;

}?>

感谢您对此问题的任何帮助。为什么它在 Android 4.03 上失败了，而它在以前的版本中运行完美？

谢谢！

Answer 1

试试这个

class getEditingHUD extends AsyncTask<String, Long, Integer> {

    protected void onPreExecute() {
        super.onPreExecute();
        loading = ProgressDialog.show(HtmlViwer.this, null,
                "Please wait...");
    }

    protected Integer doInBackground(String... params) {
        File file = new File(Environment.getExternalStorageDirectory(), "yourfile.html");
        try {
            FileInputStream fis = new FileInputStream(file);
            String myserver = "http://your server/phpfile.php";
            HttpFileUploader htfu = new HttpFileUploader(myserver,
                    "noparamshere", Modules.currentProgram + ".html");
            htfu.doStart(fis);
        } catch (Exception e) {
            Log.e("Error Readingfile", e.toString());
        }

        return null;
    }

    protected void onPostExecute(Integer result) {
        super.onPostExecute(result);
        try {
            if (loading != null && loading.isShowing())
                loading.dismiss();
        } catch (Throwable t) {

        }
    }

}

还有这个 HttpFileUploader 类

public class HttpFileUploader implements Runnable {

URL connectURL;
String params;
String responseString;
// InterfaceHttpUtil ifPostBack;
String fileName;
byte[] dataToServer;

HttpFileUploader(String urlString, String params, String fileName) {
    try {
        connectURL = new URL(urlString);
    } catch (Exception ex) {
        Log.i("URL FORMATION", "MALFORMATED URL");
    }
    this.params = params + "=";
    this.fileName = fileName;

}

void doStart(FileInputStream stream) {
    fileInputStream = stream;
    PrakitoServer();
}

FileInputStream fileInputStream = null;

void PrakitoServer() {
    String exsistingFileName = "print.html";

    String lineEnd = "\r\n";
    String twoHyphens = "--";
    String boundary = "*****";
    String Tag = "3rd";
    try {
        // ------------------ CLIENT REQUEST

        Log.e(Tag, "Starting to bad things");
        // Open a HTTP connection to the URL

        HttpURLConnection conn = (HttpURLConnection) connectURL
                .openConnection();

        // Allow Inputs
        conn.setDoInput(true);

        // Allow Outputs
        conn.setDoOutput(true);

        // Don't use a cached copy.
        conn.setUseCaches(false);

        // Use a post method.
        conn.setRequestMethod("POST");

        conn.setRequestProperty("Connection", "Keep-Alive");

        conn.setRequestProperty("Content-Type",
                "multipart/form-data;boundary=" + boundary);

        DataOutputStream dos = new DataOutputStream(conn.getOutputStream());

        dos.writeBytes(twoHyphens + boundary + lineEnd);
        dos
                .writeBytes("Content-Disposition: form-data; name=\"uploadedfile\";filename=\""
                        + exsistingFileName + "\"" + lineEnd);
        dos.writeBytes(lineEnd);

        Log.e(Tag, "Headers are written");

        // create a buffer of maximum size

        int bytesAvailable = fileInputStream.available();
        int maxBufferSize = 1024;
        int bufferSize = Math.min(bytesAvailable, maxBufferSize);
        byte[] buffer = new byte[bufferSize];

        // read file and write it into form...

        int bytesRead = fileInputStream.read(buffer, 0, bufferSize);

        while (bytesRead > 0) {
            dos.write(buffer, 0, bufferSize);
            bytesAvailable = fileInputStream.available();
            bufferSize = Math.min(bytesAvailable, maxBufferSize);
            bytesRead = fileInputStream.read(buffer, 0, bufferSize);
        }

        // send multipart form data necesssary after file data...

        dos.writeBytes(lineEnd);
        dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);

        // close streams
        Log.e(Tag, "File is written");
        fileInputStream.close();
        dos.flush();

        InputStream is = conn.getInputStream();
        // retrieve the response from server
        int ch;

        StringBuffer b = new StringBuffer();
        while ((ch = is.read()) != -1) {
            b.append((char) ch);
        }
        String s = b.toString();
        Log.i("Response", s);
        dos.close();

    } catch (MalformedURLException ex) {
        Log.e(Tag, "error: " + ex.getMessage(), ex);
    }

    catch (IOException ioe) {
        Log.e(Tag, "error: " + ioe.getMessage(), ioe);
    }
}

@Override
public void run() {
    // TODO Auto-generated method stub

}

}

Answer 2

调用 AsyncTask 类中的 uploadOrderFile 方法。你会修复它

对于 AsyncTask 类，请参考此链接 How to execute some code in Android UI thread async?