如何将 PDF 文件上传到 Parse 服务器？

Question

我需要帮助在 android Studio 中使用 JAVA 将 pdf 文件上传到解析服务器。我尝试使用以下代码：private ParseObject uploadPDFToParse(File PDFFile, ParseObject po, String columnName){    if(PDFFile != null){        Log.d("EB", "PDFFile is not NULL: " + PDFFile.toString());        ByteArrayOutputStream out = new ByteArrayOutputStream();        BufferedInputStream in = null;        try {            in = new BufferedInputStream(new FileInputStream(PDFFile));        } catch (FileNotFoundException e) {            e.printStackTrace();        }        int read;        byte[] buff = new byte[1024];        try {            while ((read = in.read(buff)) > 0)            {                out.write(buff, 0, read);            }        } catch (IOException e) {            e.printStackTrace();        }        try {            out.flush();        } catch (IOException e) {            e.printStackTrace();        }        byte[] pdfBytes = out.toByteArray();        // Create the ParseFile        ParseFile file = new ParseFile(PDFFile.getName() , pdfBytes);        po.put(columnName, file);        // Upload the file into Parse Cloud        file.saveInBackground();        po.saveInBackground();    }    return po;}

Answer 1

尝试以下代码并让我知道：

private ParseObject uploadPDFToParse(File PDFFile, ParseObject po, String columnName){

    if(PDFFile != null){

        Log.d("EB", "PDFFile is not NULL: " + PDFFile.toString());

        int size = (int) file.length();

        byte[] pdfBytes = new byte[size];

        try {

            BufferedInputStream buf = new BufferedInputStream(new FileInputStream(file));

            buf.read(pdfBytes, 0, pdfBytes.length);

            buf.close();

        } catch (FileNotFoundException e) {

            e.printStackTrace();

        } catch (IOException e) {

            e.printStackTrace();

        }

        // Create the ParseFile

        ParseFile file = new ParseFile(PDFFile.getName() , pdfBytes);

        po.put(columnName, file);

        // Upload the file into Parse Cloud

        file.save();

        po.saveInBackground();

    }

    return po;

}