Generate file reading a database field

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Generate file reading a database field

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#1 by (0 votes)

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I'm having trouble generating files (both text and binary). The text files are not coming out with the correct encoding, and the binaries are corrupted. I'm using java 5 and Struts.

The code to generate the files is

        final byte[] array = (byte[]) hashMap.get("BINARY_FILE");
    if (array != null && array.length > 0) {
        bis = new BufferedInputStream(new ByteArrayInputStream(array));
    }

    file = new File(tempDir.getAbsolutePath() + "\" + path + fileName);
    final FileOutputStream fos = new FileOutputStream(file);

    if (!file.exists()) {
        file.createNewFile();
    }

    baos = new ByteArrayOutputStream();

    int c;
    if (size >= SIZE_LIMIT) {
        final BufferedOutputStream bos = new BufferedOutputStream(fos);
        for (int i = 0; i < size; i++) {
        bos.write(i);
        }
        bos.flush();
        bos.close();
    } else {
        while ((c = bis.read()) != -1) {
        fos.write(array);
        }
    }

    fos.flush();
    fos.close();

java

asked by anonymous 03.11.2015 / 21:02

1 answer

ViewExpiredException in periodically updated view Rule in the model using str_replace () to replace "," with "."

score 0 · Answer 1

A legal idea is to save your serializado object.

public static void saveObject(Object object, String caminho, String nameOfArchive) throws FileNotFoundException, IOException
{
    FileOutputStream fileOutputStream = new FileOutputStream(caminho.concat(File.separator).concat(nameOfArchive));
    ObjectOutputStream of = new ObjectOutputStream(fileOutputStream);

    of.writeObject(object);

    of.close();
    fileOutputStream.close();
}

In this way, if you reuse it on your system, you can do the following:

public static Object getObject(String arquivo) throws FileNotFoundException, IOException, ClassNotFoundException
{
    FileInputStream fi = new FileInputStream(arquivo);
    ObjectInputStream objInput = new ObjectInputStream(fi);
    Object _retorno = (Object) objInput.readObject();
    objInput.close();

    return _retorno;
}