Ubuntu环境下把word文档转成pdf，把pdf文件转成jpg

环境搭建

使用语言 python3

安装imagemagick(pdf转jpg是内部需要调用到此工具)

apt-get install imagemagick

安装libreoffice(此工具用于将word文档转化成pdf文件)

apt-get install libreoffice

安装python wand，PIL库

pip install wand

pip install PIL

PDF转JPG

先转png，再转jpg是为了避免出现黑色，透明等背景，造成转换出来的图片与pdf文件显示不一样

from PIL import Image as Image2
from wand.image import Image
from wand.color import Color

def convert_pdf_to_jpg(filename):
    end_length = len(filename.split('.')[-1]) + 1
    title = filename[0:-end_length]
    title = title.split('/')[-1]

    #resolution为分辨率，background为背景颜色
    with Image(filename=filename, resolution=150, background=Color('White')) as img :

        #页数
        length = len(img.sequence)

        #如果页数超过1页，生成的文件名会依次加上页码数
        with img.convert('png') as converted:
            path = 'static/local_images/%s.png' % title
            converted.save(filename=path)
    image_list = []
    if length == 1:
        path = 'static/local_images/%s.png' % title
        image_list.append(path)
    else:
        for i in range(0, length):
            path = 'static/local_images/%s-%d.png' % (title, i)
            image_list.append(path)
    jpg_list = []
    for img in image_list:
        image = Image2.open(img)
        x,y = image.size
        background = Image2.new('RGBA', image.size, (255,255,255))

        try:
            background.paste(image, (0, 0, x, y), image)
            image = background.convert('RGB')
        except:
            image = image.convert('RGBA')
            background.paste(image, (0, 0, x, y), image)
            image = background.convert('RGB')


        title = img.split('.')[0]
        name = title + '.jpg'
        image.save(name)
        os.remove(img)
        name = "%s/%s" %(static_host, name)
        jpg_list.append(name)

    return jpg_list

word文档转PDF

python没有直接把word转换成pdf文档的库，只能先安装libreoffice工具，然后利用os库系统调用libreoffice工具

import os

def convert_doc_to_pdf(filename):
    end_length = len(filename.split('.')[-1]) + 1
    name = filename[0:-end_length]

    cmd = 'libreoffice  --convert-to pdf  %s' % filename
    os.system(cmd)
    name = name.split('/')[-1] + '.pdf'
    return name