java字节数组和文件互转

/*
获得指定文件的byte数组
*/
public static byte[] getBytes(String filePath){
byte[] buffer = null;

    try {<br />            File file = new File(filePath);<br />            FileInputStream fis = new FileInputStream(file);<br />            ByteArrayOutputStream bos = new ByteArrayOutputStream(1000);<br />            byte[] b = new byte[1000];<br />            int n;<br />            while ((n = fis.read(b)) != -1) {<br />                bos.write(b, 0, n);<br />            }
        fis.close();<br />            bos.close();<br />            buffer = bos.toByteArray();<br />        } catch (FileNotFoundException e) {<br />            e.printStackTrace();
    } catch (IOException e) {<br />            e.printStackTrace();
    }<br />        return buffer;
}
/**<br />        qzf <br />     * 根据byte数组，生成文件<br />     */<br />    public static void getFile(byte[] bfile, String filePath,String fileName) {<br />        BufferedOutputStream bos = null;<br />        FileOutputStream fos = null;<br />        File file = null;<br />        try {<br />            File dir = new File(filePath);<br />            if(!dir.exists()&&dir.isDirectory()){//判断文件目录是否存在<br />                dir.mkdirs();<br />            }
        file = new File(filePath+"\\"+fileName);<br />            fos = new FileOutputStream(file);<br />            bos = new BufferedOutputStream(fos);<br />            bos.write(bfile);
    } catch (Exception e) {<br />            e.printStackTrace();
    } finally {<br />            if (bos != null) {<br />                try {<br />                    bos.close();<br />                } catch (IOException e1) {<br />                    e1.printStackTrace();<br />                }
        }<br />            if (fos != null) {<br />                try {<br />                    fos.close();<br />                } catch (IOException e1) {<br />                    e1.printStackTrace();
            }<br />            }<br />        }<br />    }