我正在運行一個將影像轉換為 pdf 檔案并在本地保存 pdf 的腳本，它可以在我的 Windows 機器上運行，但在我的燒瓶服務器上它們沒有保存。
這是代碼
from cmath import e
from os import link
from pickle import GET
from webbrowser import get
from flask import Flask, render_template, request, jsonify , redirect, url_for
from flask import send_file
import json
import requests
from libgen_api import LibgenSearch
from kissmanga import get_search_results, get_manga_details, get_manga_episode, get_manga_chapter
import aiohttp
import aiofiles
import asyncio
import os
from fake_headers import Headers
from fpdf import FPDF
from PIL import Image
import glob
import uuid
app = Flask(__name__)
@app.route("/")
def home():
return render_template(
"index.html"
)
@app.route("/api/default")
def titleSearch():
try:
title = request.args.get('query')
s = LibgenSearch()
results = s.search_title(title)
item_to_download = results[0]
download_links = s.resolve_download_links(item_to_download)
return render_template(
"results.html", results=results, download_links=download_links, title=title, )
except IndexError:
return render_template(
"error.html")
@app.route("/api/manga")
def mangasearch():
try:
class bcolors:
HEADER = '\033[95m'
OKBLUE = '\033[94m'
OKCYAN = '\033[96m'
OKGREEN = '\033[92m'
WARNING = '\033[93m'
FAIL = '\033[91m'
ENDC = '\033[0m'
BOLD = '\033[1m'
UNDERLINE = '\033[4m'
InputMangaTitle = request.args.get('manganame')
InputMangaCh = request.args.get('mangach')
path = os.path.dirname(os.path.realpath(__file__))
os.chdir(path)
if os.path.exists('temp') == False:
os.makedirs('temp')
if os.path.exists('PDFs') == False:
os.makedirs('PDFs')
manga_search = get_search_results(query=InputMangaTitle)
for k in manga_search:
try:
titleManga=(k.get('title' ))
except AttributeError as attErr:
print(f'{bcolors.FAIL}Query did not yield any results!{bcolors.ENDC}')
quit()
for k in manga_search:
IdManga=(k.get('mangaid' ))
mangaChNum= InputMangaCh
# for k in manga_search:
# print(titleManga)
manga_chapter = get_manga_chapter(mangaid=IdManga, chapNumber=mangaChNum)
pdfName = titleManga ' ch.# ' mangaChNum
global FileName
FileName = pdfName
# print(manga_chapter)
async def fetch(session, url):
try:
url = url[1:-1]
async with session.get(url) as resp:
fileNameNE = (url.split('/')[-1]).split('.')[0]
fileName = fileNameNE '.jpg'
fullFileName = 'temp/' fileName
if resp.status == 200:
async with aiofiles.open(fullFileName, mode='wb') as f:
await f.write(await resp.read())
await f.close()
print(f'{bcolors.OKGREEN}Done: {bcolors.ENDC}{url}')
return fullFileName
else:
print(f'{bcolors.WARNING}Rejected URL: {url} | Status: {resp.status}{bcolors.ENDC}')
except Exception as err:
print(err)
async def main(image_urls):
tasks = []
headers = Headers(headers=True).generate()
async with aiohttp.ClientSession(headers=headers) as session:
for image in image_urls:
coroutineTask = asyncio.ensure_future(fetch(session, image))
tasks.append(coroutineTask)
data = await asyncio.gather(*tasks)
return data
def pdfGen(imageList):
pdf = FPDF()
for image in imageList:
if image == None:
continue
cover = Image.open(image)
width, height = cover.size
width, height = float(width * 0.264583), float(height * 0.264583)
pdf_size = {'P': {'w': 210, 'h': 297}, 'L': {'w': 297, 'h': 210}}
orientation = 'P' if width < height else 'L'
width = width if width < pdf_size[orientation]['w'] else pdf_size[orientation]['w']
height = height if height < pdf_size[orientation]['h'] else pdf_size[orientation]['h']
pdf.add_page(orientation=orientation)
pdf.image(image, 0, 0, width, height)
pdf.output(f"PDFs/{pdfName}.pdf", "F")
print(f'{bcolors.OKCYAN}Generated PDF: {pdfName}.pdf {bcolors.ENDC}')
if __name__ == "__main__":
try:
image_urls = (manga_chapter['totalPages']).strip('][').split(', ')
result = asyncio.run(main(image_urls))
pdfGen(result)
files = glob.glob('temp/*')
for f in files:
os.remove(f)
except Exception as e:
print(e)
return render_template("manga.html", pdfName = pdfName)
except IndexError:
return render_template(
"error.html")
@app.route('/return-files/')
def return_files_tut():
try:
return send_file(f'PDFs/{FileName}.pdf')
except Exception as e:
return str(e)
if __name__ == "__main__":
app.run(debug=False, port=80)
如您所見，它應該將 pdf 保存在 PDFs/{pdfName}.pdf 中，但是當嘗試發送檔案時，它說它不存在
我嘗試更改檔案路徑，但沒有運氣。
uj5u.com熱心網友回復：
如果您只是將腳本復制到 Flask 應用程式中，它將無法正常作業。根據情況調整您的代碼，它將起作用。
你應該關心線路if __name__ == '__main__':。這在您的路線中毫無意義。閱讀此處以獲取更多資訊。
下面的示例使用了 Flask 的 async extra，應該可以滿足您的需求。
用戶可以通過輸入標題來搜索出版物。如果他隨后選擇了一個，則可能的章節將以 PDF 格式提供以供下載。如果選擇一章下載，則處理基本上符合您的規范。將創建一個臨時目錄，將可用影像下載到該目錄中。您有兩種選擇，具體取決于您要創建目錄的位置和方式。加載所有影像后，將根據其路徑資訊生成 PDF，該路徑資訊直接從記憶體中傳遞。然后洗掉使用的目錄。
燒瓶
from PIL import Image
from flask import (
Flask,
abort,
render_template,
request,
send_file
)
from fpdf import FPDF
from functools import partial
from io import BytesIO
from kissmanga import (
get_search_results,
get_manga_details,
get_manga_episode,
get_manga_chapter
)
import asyncio
import aiohttp
import aiofiles
import os
import shutil
import tempfile
import urllib
import uuid
app = Flask(__name__)
@app.route('/')
def index():
title = request.args.get('qs')
results = []
if title:
results = get_search_results(query=title)
if 'status' in results:
results = []
return render_template('index.html', **locals())
@app.route('/episode/<mangaid>')
def episode(mangaid):
try:
episode = get_manga_episode(mangaid=mangaid)
return render_template('episode.html', **locals())
except Exception as exc:
abort(404)
@app.route('/chapter/<mangaid>/<int:num>')
async def chapter(mangaid, num):
chapter = get_manga_chapter(mangaid=mangaid, chapNumber=num)
if chapter == 'Invalid Mangaid or chapter number':
abort(404)
# Either manage a folder manually ...
# try:
# urls = eval(chapter['totalPages'])
# dest = os.path.join(app.instance_path, 'downloads', str(uuid.uuid4()))
# try:
# os.makedirs(dest)
# except: pass
# filenames = await download_chapter(mangaid, num, urls, dest)
# buffer = BytesIO(gen_pdf(filenames).encode('latin-1'))
# return send_file(
# buffer,
# mimetype='application/pdf',
# download_name=f'{mangaid}_{num}'
# )
# except Exception as exc:
# app.logger.exception(exc)
# abort(500)
# finally:
# shutil.rmtree(dest)
# ... or use a temporary folder.
with tempfile.TemporaryDirectory() as dest:
try:
urls = eval(chapter['totalPages'])
filenames = await download_chapter(mangaid, num, urls, dest)
buffer = BytesIO(gen_pdf(filenames).encode('latin-1'))
except Exception as exc:
app.logger.exception(exc)
abort(500)
return send_file(
buffer,
mimetype='application/pdf',
download_name=f'{mangaid}_{num}'
)
async def download_chapter(mangaid, chapter, urls, dest):
def _url2path(url, root, size):
_path = urllib.parse.urlparse(url).path
_path, _name = os.path.split(_path)
_root, _ext = os.path.splitext(_name)
return url, os.path.join(root, f"{_root.rjust(size, '0')}{_ext}")
async with aiohttp.ClientSession() as session:
size = len(str(len(urls)))
tasks = [
fetch(session, _url, _path)
for _url, _path in map(partial(_url2path, root=dest, size=size), urls)
]
return await asyncio.gather(*tasks)
async def fetch(session, url, filename):
try:
async with session.get(url) as response:
assert response.status == 200
async with aiofiles.open(filename, mode='wb') as fp:
await fp.write(await response.read())
return filename
except Exception as exc:
return None
def gen_pdf(filenames):
pdf = FPDF()
for filename in filenames:
if not filename: continue
cover = Image.open(filename)
width, height = cover.size
if width < height:
pdf.add_page(orientation='P')
pdf.image(
filename,
0, 0,
max(210, min(210, width)),
max(297, min(297, height))
)
else:
pdf.add_page(orientation='L')
pdf.image(
filename,
0, 0,
max(297, min(297, width)),
max(210, min(210, height))
)
return pdf.output(dest='S')
HTML (./templates/index.html)
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Index</title>
</head>
<body>
<form>
<input type="text" name="qs" autocomplete="off" spellcheck="false" value="{{ title or '' }}" />
<input type="submit" value="Go" />
</form>
<div>
{% if results -%}
<ul>
{% for item in results -%}
<li><a href="{{ url_for('episode', mangaid=item.mangaid) }}">{{ item.title }}</a></li>
{% endfor -%}
</ul>
{% else -%}
<p>No results found</p>
{% endif -%}
</div>
</body>
</html>
HTML (./templates/episode.html)
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Episode</title>
</head>
<body>
<h1>{{ episode.title }}</h1>
<ul>
{% for i in range(1, episode.totalchapter | int 1) -%}
<li><a href="{{ url_for('chapter', mangaid=mangaid, num=i) }}">Chapter {{ i }}</a></li>
{% endfor -%}
</ul>
</body>
</html>
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