我的任务是从模板生成 DOCX 文件,然后通过 Flask 提供该文件。我用python-docx-模板它只是 python-docx 的包装器,允许使用 jinja 模板。
最后他们建议使用 StringIO 仅将文件保存在内存中,所以我的代码如下所示:
def report_doc(user_id):
# Prepare the data...
from docxtpl import DocxTemplate
doc = DocxTemplate(app.root_path+'/templates/report.docx')
doc.render({
# Pass parameters
})
from io import StringIO
file_stream = StringIO()
doc.save(file_stream)
return send_file(file_stream, as_attachment=True, attachment_filename='report_'+user_id+'.docx')
保存时会抛出错误TypeError: string argument expected, got 'bytes'
。谷歌搜索后,我发现这个答案上面说ZipFile
需要 BytesIO。但是,当我用 BytesIO 替换 StringIO 时,它只返回一个空文件,因此它不会抛出任何错误,但绝对不会保存文件。
在这种情况下到底什么才有效呢?如果这里出现了完全错误的情况,那么一般情况下这怎么行?
谢谢你!
UPD:这是完整跟踪的例外情况save
函数调用:
File "/ms/controllers.py", line 1306, in report_doc
doc.save(file_stream)
File "/.env/lib/python3.5/site-packages/docx/document.py", line 142, in save
self._part.save(path_or_stream)
File "/.env/lib/python3.5/site-packages/docx/parts/document.py", line 129, in save
self.package.save(path_or_stream)
File "/.env/lib/python3.5/site-packages/docx/opc/package.py", line 160, in save
PackageWriter.write(pkg_file, self.rels, self.parts)
File "/.env/lib/python3.5/site-packages/docx/opc/pkgwriter.py", line 33, in write
PackageWriter._write_content_types_stream(phys_writer, parts)
File "/.env/lib/python3.5/site-packages/docx/opc/pkgwriter.py", line 45, in _write_content_types_stream
phys_writer.write(CONTENT_TYPES_URI, cti.blob)
File "/.env/lib/python3.5/site-packages/docx/opc/phys_pkg.py", line 155, in write
self._zipf.writestr(pack_uri.membername, blob)
File "/usr/lib/python3.5/zipfile.py", line 1581, in writestr
self.fp.write(zinfo.FileHeader(zip64))
TypeError: string argument expected, got 'bytes'