环境配置
安装ImageMagick
brew install imagemagick
这里有个坑，brew安装都是7.x版本，使用wand时会出错，需要你安装6.x版本。 解决办法：
1.安装6.x版本
brew install imagemagick@6
2.取消链接7.x版本
brew unlink imagemagick
Unlinking /usr/local/Cellar/imagemagick/7.0.7-4… 71 symlinks removed
3.强制链接6.x版本
brew link imagemagick@6 –forceLinking /usr/local/Cellar/imagemagick@6/6.9.9-15… 75 symlinks created
4.export环境变量 echo ‘export PATH=”/usr/local/opt/imagemagick@6/bin:$PATH”’ » ~/.bash_profile
ok，以上解决imagemagick版本问题。
代码如下:
#!/usr/bin/python
#-*- coding: utf-8 -*-
#encoding=utf-8
from wand.image import Image
from PyPDF2 import PdfFileReader
import logging
import os
import warnings
import multiprocessing
import re
def logs():
# 禁用警告
warnings.filterwarnings('ignore')
# 设置logging
if not os.path.exists('logs'): os.mkdir('logs')
log_filename = 'logs/pdf2img.log'
logging.basicConfig(filename=log_filename, filemode='a', level=logging.DEBUG,
format='%(asctime)s %(filename)s [%(levelname)s] %(message)s',
datefmt='[%Y-%m-%d %H:%M:%S]',
)
def process(single_page):
pattern = re.compile('\[|\]')
# 页码
page_num = pattern.split(single_page)[1]
with Image(filename=single_page, resolution=200) as converted:
converted.compression_quality = 45
newfilename = file_text + page_num + '.jpg'
converted.save(filename=newfilename)
logging.info(multiprocessing.current_process().name + '' + newfilename)
if not os.path.isfile(newfilename): logging.warning('page of file is not found:[%s]' % (newfilename))
def get_pages(filename):
return PdfFileReader(file(filename, 'rb')).getNumPages()
if __name__ == '__main__':
logs()
try:
get_source = '设计规范模板.pdf'
file_text = os.path.splitext(get_source)[0]
pages = get_pages(get_source)
process_num = multiprocessing.cpu_count()
pool = multiprocessing.Pool(processes=process_num)
page_list = [get_source + "[" + str(i) + "]" for i in range(pages)]
logging.info('=========>>>> Start [Process num: %s]' % (process_num))
pool.map(process, page_list)
pool.close()
pool.join()
print 'Page Size:%s' % (pages)
logging.info('<<<========= End')
except Exception, e:
logging.error(e)
print 'Page Size:0'
运行
python pdf2img.py
