package com.zdjizhi.utils;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;

public class FileByteUtils {

    public static byte[] getFileBytes (String filePath) throws IOException {
        File file = new File(filePath);
        FileInputStream fis = new FileInputStream(file);
        ByteArrayOutputStream bos = new ByteArrayOutputStream(1024);
        byte[] b = new byte[1024];
        int n;
        while ((n = fis.read(b)) != -1) {
            bos.write(b, 0, n);
        }
        fis.close();
        byte[] data = bos.toByteArray();
        bos.close();
        return data;
    }
}