io.itit.FileUtil Maven / Gradle / Ivy

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package io.itit;

import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

/**
 * 
 * @author skydu
 *
 */
public class FileUtil {

	public static void saveContent(byte bb[], File file) throws IOException {
		try (FileOutputStream fos = new FileOutputStream(file);
				ByteArrayInputStream bis = new ByteArrayInputStream(bb)) {
			copy(bis, fos);
		}
	}
	//
	public static long copy(InputStream input, OutputStream output)
			throws IOException {
		byte[] buffer = new byte[4096];
		long count = 0;
		int n = 0;
		while (-1 != (n = input.read(buffer))) {
			output.write(buffer, 0, n);
			count += n;
		}
		return count;
	}
}