bajt [] do pliku w Javie
Z Javą:
Mam byte[]
, który reprezentuje plik.
Jak napisać to do pliku (tj. C:\myfile.pdf
)
12 answers
FileUtils.writeByteArrayToFile(new File("pathname"), myByteArray)
Albo, jeśli nalegasz na pracę dla siebie...
try (FileOutputStream fos = new FileOutputStream("pathname")) {
fos.write(myByteArray);
//fos.close(); There is no more need for this line since you had created the instance of "fos" inside the try. And this will automatically close the OutputStream
}
Warning: date(): Invalid date.timezone value 'Europe/Kyiv', we selected the timezone 'UTC' for now. in /var/www/agent_stack/data/www/doraprojects.net/template/agent.layouts/content.php on line 54
2018-03-06 13:16:51
Bez bibliotek:
try (FileOutputStream stream = new FileOutputStream(path)) {
stream.write(bytes);
}
Z Google Guava :
Files.write(bytes, new File(path));
Z Apache Commons :
FileUtils.writeByteArrayToFile(new File(path), bytes);
Wszystkie te strategie wymagają, aby złapać IOException w pewnym momencie zbyt.
Warning: date(): Invalid date.timezone value 'Europe/Kyiv', we selected the timezone 'UTC' for now. in /var/www/agent_stack/data/www/doraprojects.net/template/agent.layouts/content.php on line 54
2018-11-27 18:37:43
Inne rozwiązanie za pomocą java.nio.file
:
byte[] bytes = ...;
Path path = Paths.get("C:\\myfile.pdf");
Files.write(path, bytes);
Warning: date(): Invalid date.timezone value 'Europe/Kyiv', we selected the timezone 'UTC' for now. in /var/www/agent_stack/data/www/doraprojects.net/template/agent.layouts/content.php on line 54
2018-12-18 16:19:34
Również od Javy 7, jedna linia z Javą.nio.plik.Pliki:
Files.write(new File(filePath).toPath(), data);
Gdzie data jest Twoim bajtem [], a filePath jest łańcuchem znaków. Możesz również dodać wiele opcji otwierania plików za pomocą klasy StandardOpenOptions. Dodaj rzuty lub otocz za pomocą try/catch.
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2016-02-29 13:06:22
Od Java 7 dalej możesz użyć try-with-resources , aby uniknąć wycieku zasobów i ułatwić odczyt kodu. Więcej na ten temat tutaj .
Aby zapisać byteArray
do pliku, który wykonasz:
try (FileOutputStream fos = new FileOutputStream("fullPathToFile")) {
fos.write(byteArray);
} catch (IOException ioe) {
ioe.printStackTrace();
}
Warning: date(): Invalid date.timezone value 'Europe/Kyiv', we selected the timezone 'UTC' for now. in /var/www/agent_stack/data/www/doraprojects.net/template/agent.layouts/content.php on line 54
2014-04-03 00:02:07
Spróbuj OutputStream
a dokładniej FileOutputStream
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2010-12-03 21:40:25
I know it ' s done with InputStream
W rzeczywistości, będziesz zapisywać do pliku wyjściowego ...
Warning: date(): Invalid date.timezone value 'Europe/Kyiv', we selected the timezone 'UTC' for now. in /var/www/agent_stack/data/www/doraprojects.net/template/agent.layouts/content.php on line 54
2010-12-03 21:41:08
Przykład podstawowy:
String fileName = "file.test";
BufferedOutputStream bs = null;
try {
FileOutputStream fs = new FileOutputStream(new File(fileName));
bs = new BufferedOutputStream(fs);
bs.write(byte_array);
bs.close();
bs = null;
} catch (Exception e) {
e.printStackTrace()
}
if (bs != null) try { bs.close(); } catch (Exception e) {}
Warning: date(): Invalid date.timezone value 'Europe/Kyiv', we selected the timezone 'UTC' for now. in /var/www/agent_stack/data/www/doraprojects.net/template/agent.layouts/content.php on line 54
2010-12-03 21:52:12
File f = new File(fileName);
byte[] fileContent = msg.getByteSequenceContent();
Path path = Paths.get(f.getAbsolutePath());
try {
Files.write(path, fileContent);
} catch (IOException ex) {
Logger.getLogger(Agent2.class.getName()).log(Level.SEVERE, null, ex);
}
Warning: date(): Invalid date.timezone value 'Europe/Kyiv', we selected the timezone 'UTC' for now. in /var/www/agent_stack/data/www/doraprojects.net/template/agent.layouts/content.php on line 54
2017-03-29 13:31:25
////////////////////////// 1] plik do bajtu [] ///////////////////
Path path = Paths.get(p);
byte[] data = null;
try {
data = Files.readAllBytes(path);
} catch (IOException ex) {
Logger.getLogger(Agent1.class.getName()).log(Level.SEVERE, null, ex);
}
/////////////////////// 2] bajt [] do pliku ///////////////////////////
File f = new File(fileName);
byte[] fileContent = msg.getByteSequenceContent();
Path path = Paths.get(f.getAbsolutePath());
try {
Files.write(path, fileContent);
} catch (IOException ex) {
Logger.getLogger(Agent2.class.getName()).log(Level.SEVERE, null, ex);
}
Warning: date(): Invalid date.timezone value 'Europe/Kyiv', we selected the timezone 'UTC' for now. in /var/www/agent_stack/data/www/doraprojects.net/template/agent.layouts/content.php on line 54
2017-03-29 14:05:24
Jest to program, w którym odczytujemy i drukujemy tablicę bajtów offsetu i długości Za pomocą String Builder i zapisujemy tablicę bajtów offsetu długości do nowego pliku.
`Wpisz tutaj kod
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
//*This is a program where we are reading and printing array of bytes offset and length using StringBuilder and Writing the array of bytes offset length to the new file*//
public class ReadandWriteAByte {
public void readandWriteBytesToFile(){
File file = new File("count.char"); //(abcdefghijk)
File bfile = new File("bytefile.txt");//(New File)
byte[] b;
FileInputStream fis = null;
FileOutputStream fos = null;
try{
fis = new FileInputStream (file);
fos = new FileOutputStream (bfile);
b = new byte [1024];
int i;
StringBuilder sb = new StringBuilder();
while ((i = fis.read(b))!=-1){
sb.append(new String(b,5,5));
fos.write(b, 2, 5);
}
System.out.println(sb.toString());
}catch (IOException e) {
e.printStackTrace();
}finally {
try {
if(fis != null);
fis.close(); //This helps to close the stream
}catch (IOException e){
e.printStackTrace();
}
}
}
public static void main (String args[]){
ReadandWriteAByte rb = new ReadandWriteAByte();
rb.readandWriteBytesToFile();
}
}
O / P w konsoli: fghij
O / P w Nowym pliku: cdefg
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2016-07-22 18:00:57
Możesz spróbować Cactoos :
new LengthOf(new TeeInput(array, new File("a.txt"))).value();
Więcej Szczegółów: http://www.yegor256.com/2017/06/22/object-oriented-input-output-in-cactoos.html
Warning: date(): Invalid date.timezone value 'Europe/Kyiv', we selected the timezone 'UTC' for now. in /var/www/agent_stack/data/www/doraprojects.net/template/agent.layouts/content.php on line 54
2017-08-27 13:00:13