Packaging and delete temporary files

//4、压缩打包
String uuid = UUID.randomUUID().toString();
String zipFile = prePath + "/docx/" + uuid + ".zip";
ZipUtil.zip(file_list, zipFile);

//5、删除临时文件
for (int i = 0; i < file_list.size(); i++) {
 File file = new File(file_list.get(i));
 file.delete();
}