Seguidamente se muestra como hacer copia de carpetas de un origen a destino en Java. Sino existe la carpeta la crea. Son dos ficheros: Backup.java y FileUtils.java<\/p>\n
Backup.java
=====================================================
package backup;<\/p>\n
import java.io.File;
import java.io.IOException;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.logging.Level;
import java.util.logging.Logger;<\/p>\n
public class Backup {
public static void main(String[] args) {<\/p>\n
try {
DateFormat dateFormat = new SimpleDateFormat(\u00abyyyy-MM-dd\u00bb);
Calendar cal = Calendar.getInstance();
String dia = dateFormat.format(cal.getTime());<\/p>\n
File srcDir;
File destDir;
FileUtils fileUtils;
fileUtils = new FileUtils();
int contador = 1;<\/p>\n
System.out.println(\u00abFecha: \u00bb + dia);<\/p>\n
srcDir = new File(\u00abC:\\Users\\Paco\\Documents\\Fuente\u00bb);
destDir = new File(\u00abC:\\Users\\Paco\\Documents\\backup\\\u00bb + dia + \u00ab\\Fuente\u00bb);
fileUtils.copyDirectory(srcDir, destDir);
System.out.println(contador + \u00ab. Copiado \u00bb + srcDir + \u00bb \u00bb + \u00bb en \u00bb + destDir);
} catch (IOException ex) {
Logger.getLogger(Backup.class.getName()).log(Level.SEVERE, null, ex);
}<\/p>\n
}<\/p>\n
}
FileUtils.java
=====================================================
package backup;<\/p>\n
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;<\/p>\n
class FileUtils {<\/p>\n
public void copy(File sourceLocation, File targetLocation) throws IOException {
if (sourceLocation.isDirectory()) {
copyDirectory(sourceLocation, targetLocation);
} else {
copyFile(sourceLocation, targetLocation);
}
}<\/p>\n
void copyDirectory(File source, File target) throws IOException {
File destino;
File origen;<\/p>\n
if (!target.exists()) {
\/\/target.mkdir();
target.mkdirs(); \/\/ Crea carpetas sino existe
}<\/p>\n
for (String f : source.list()) {
origen = new File(source, f);
destino = new File(target, f);
if ((origen.lastModified() > destino.lastModified()) || (origen.length() > destino.length())) {
copy(origen, destino);
}
}
}<\/p>\n
private void copyFile(File source, File target) throws IOException {
try (
InputStream in = new FileInputStream(source);
OutputStream out = new FileOutputStream(target)) {
byte[] buf = new byte[1024];
int length;
while ((length = in.read(buf)) > 0) {
out.write(buf, 0, length);
}
}
}
}<\/p>\n
Fuente:
https:\/\/stackoverflow.com\/questions\/5368724\/how-to-copy-a-folder-and-all-its-subfolders-and-files-into-another-folder<\/p>\n","protected":false},"excerpt":{"rendered":"
Seguidamente se muestra como hacer copia de carpetas de un origen a destino en Java. Sino existe la carpeta la crea. Son dos ficheros: Backup.java y FileUtils.java Backup.java=====================================================package backup; import java.io.File;import java.io.IOException;import java.text.DateFormat;import java.text.SimpleDateFormat;import java.util.Calendar;import java.util.logging.Level;import java.util.logging.Logger; public class Backup … Sigue leyendo