private static ZipOutputStream getZipOutputStream(OutputStream out, Charset charset) {
		charset = (null == charset) ? DEFAULT_CHARSET : charset;
		return new ZipOutputStream(out, charset);
	}
private static ZipOutputStream getZipOutputStream ( OutputStream out , Charset charset ) { charset = ( null == charset ) ? DEFAULT_CHARSET : charset ; return new ZipOutputStream ( out , charset ) ; }
获得 {@link ZipOutputStream}

@param zipFile 压缩文件
@param charset 编码
@return {@link ZipOutputStream}