python将word文档转图片_如何将word文档转换为图片
前段时间换工作,在BOSS直聘上看到一个有意思的功能,上传docx格式的简历,能够以图片的形式在线预览,并且图片还添加了水印,笔者对此比较感兴趣,就摸索着实现方法。网上逛了一圈,对于docx直接转图片这种转换没有什么有效的信息,不过结合获取的信息,笔者倒是想了一个曲线救国的法子,docx->pdf, pdf->image,通过两步可以最终实现该转换。
一、环境准备
首先进行环境准备工作,把需要用到的工具都安装配置好:
1、安装pandoc
Pandoc是由John MacFarlane开发的标记语言转换工具,可实现不同标记语言间的格式转换,堪称该领域中的“瑞士军刀”。该工具使用Haskell语言编写,以命令行形式实现与用户的交互,可支持多种操作系统。简而言之,pandoc就是一款转换工具,可以把格式A的文档转换为格式B的文档,就本文的目标来讲,主要用它实现了docx->pdf的转换。
根据系统类别选择对应的安装包,安装完成后将其安装目录添加到系统路径中,windows版本的安装完成后会自动添加,不用额外设置。
2、安装miktex
MikTex是一款基于Tex的排版引擎。TeX 在不同的硬件和操作系统上有不同的实现版本。这就像C语言,在不同的操作系统中有不同的编译系统,例如Linux 下的gcc,Windows 下的Visual C++ 等。有时,一种操作系统里也会有好几种的TeX系统。目前常见的Unix/Linux 下的TeX系统是Texlive,Windows 下则有MiKTeX和fpTeX。CTeX指的是CTeX中文套装的简称,是把MiKTeX和一些常用的相关工具,如GSview,WinEdt 等包装在一起制作的一个简易安装程序,并对其中的中文支持部分进行了配置,使得安装后马上就可以使用中文。
该排版工具是docx->pdf转换时不可获取的,否则无法实现转换。
下载地址:https://miktex.org/ 根据系统类别选择合适的版本,安装完成后将安装目录添加到系统路径。
3、安装poppler
代码实现中引用了一个开源库pdf2image,而这个库又引用了poppler,所以需要安装该环境。Poppler是一个基于xpdf-3.0的用于操作pdf的库,其中poppler-utils是建立在Poppler的库API上的工具集合,用于管理PDF和提取内容,主要工具如下:
pdfdetach – 从PDF中提取嵌入式文档;
pdffonts – 列出PDF中使用的字体;
pdfimages – 从PDF中以原始分辨率提取所有嵌入式图像;
pdfinfo – 列出PDF的所有信息;
pdfseparate – 从PDF中提取单个页面;
pdftocairo – 使用cairo将单页从PDF转换为矢量或位图格式;
pdftohtml – 将PDF转换为HTML格式的保留格式;
pdftoppm – 将PDF页面转换为位图;
pdftops – 将PDF转换为可打印的PS格式;
pdftotext – 从PDF中提取所有文本;
pdfunite – 合并几个PDF。
pdf2image使用了pdftoppm和pdfinfo这两个工具,用来将pdf转换为图片和获取pdf的文档页数,代码稍后会列出。
下载地址:https://github.com/Belval/pdf2image 根据系统类别选择对应的版本,安装完成后将安装目录下的bin目录添加到系统路径。
4、字体下载
用来生成水印时使用,笔者下载的是SimSun宋体,下载地址:https://www.fontke.com/font/10132367/download/,也可以下载其他字体,看个人选择。
完成上边四步环境就配置好了,笔者的电脑是Windows10,当然以上工具同样支持linux和mac环境,每个工具的官档都标注了支持的系统版本。环境配置好后接下来就是coding环节了,通过程序来实现转换过程的自动化调用,笔者会列出代码的目录结构,并依次说明其用途。
二、代码实现
关于实现这部分,笔者使用的开发语言是python36,以下为目录结构:
1、font目录
该目录存放的是下载好的字体文件,供代码中引用。
2、pdf目录
该目录存放转换之后的pdf文件。
3、target目录
该目录存放最终转换后的图片,图片为以时间戳命名的png图片,格式可以指定。
4、config.py
配置文件,存放了目录、图片大小、水印等配置,代码如下:
Python
import os
# 根目录
BASE_DIR = os.path.dirname(__file__)
# pdf默认输出路径
DEFAULT_OUTPUT_DIR = os.path.join(BASE_DIR, 'pdf')
# 最终生成的图片存放在此目录
TARGET_DIR = os.path.join(BASE_DIR, 'target')
# 水印字体
FONT_FILE = os.path.join(BASE_DIR, "font/simsun.ttf")
# 单张图片的宽高,PIL支持图片的最大宽度1700
IMAGE_WIDTH = 1700
IMAGE_HEIGHT = 2200
# 水印位置-left和top
WATERMARK_LEFT = 0
WATERMARK_TOP = 1800
# 水印图片背景色-白色透明,最后一位表示透明度0~255,0为透明
BACKGROUND_COLOR = (255, 255, 255, 0)
#水印字体颜色-红色 60透明度
FONT_COLOR = (255, 0, 0, 60)
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importos
# 根目录
BASE_DIR=os.path.dirname(__file__)
# pdf默认输出路径
DEFAULT_OUTPUT_DIR=os.path.join(BASE_DIR,'pdf')
# 最终生成的图片存放在此目录
TARGET_DIR=os.path.join(BASE_DIR,'target')
# 水印字体
FONT_FILE=os.path.join(BASE_DIR,"font/simsun.ttf")
# 单张图片的宽高,PIL支持图片的最大宽度1700
IMAGE_WIDTH=1700
IMAGE_HEIGHT=2200
# 水印位置-left和top
WATERMARK_LEFT=0
WATERMARK_TOP=1800
# 水印图片背景色-白色透明,最后一位表示透明度0~255,0为透明
BACKGROUND_COLOR=(255,255,255,0)
#水印字体颜色-红色 60透明度
FONT_COLOR=(255,0,0,60)
5、doc2pdf.py
该模块封装了pandoc命令行工具的调用,实现了docx文档到pdf的转换过程
Python
import os
import uuid
from subprocess import Popen, PIPE
def _load_doc(doc):
doc = str(doc)
if not os.path.exists(doc):
raise FileNotFoundError("file {} not found".format(doc))
_, doc_name = os.path.split(doc)
if not doc_name.endswith('.docx'):
raise TypeError("Only support word doc with suffix '.docx'")
return doc
def _build_command(doc_path, output_dir, pdf_name=None, pdf_engine=None):
args = ['pandoc', '--pdf-engine=xelatex']
# args = ['pandoc', '--pdf-engine=lualatex']
if pdf_engine is not None:
# MikTex包含了两种pandoc支持的Tex
if pdf_engine not in ("xelatex", "lualatex"):
raise ValueError("not supported pdf-engine: {}".format(pdf_engine))
else:
args[1] = '--pdf-engine={}'.format(pdf_engine)
if pdf_name is None:
pdf_name = str(uuid.uuid4()) + '.pdf'
if not os.path.isdir(output_dir):
raise NotADirectoryError("{} is not a existed directory".format(output_dir))
pdf_path = os.path.join(output_dir, pdf_name)
args.append('-o')
args.append(pdf_path)
args.append(doc_path)
# 设置字体避免中文乱码无法输出问题,SimSun是宋体, MicrosoftYaHei是微软雅黑
args.append('-V')
args.append('mainfont="MicrosoftYaHei"')
# args.append('-V')
# args.append('margin-left=0in')
return args, pdf_path
def doc2pdf(source, pdf_path):
doc_path = _load_doc(source)
cmd, output_pdf = _build_command(doc_path, pdf_path)
# run cmd
print("doc to pdf, converting...")
Popen(cmd, stderr=PIPE, stdout=PIPE).communicate()
print("job done!")
return output_pdf
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importos
importuuid
fromsubprocessimportPopen,PIPE
def_load_doc(doc):
doc=str(doc)
ifnotos.path.exists(doc):
raiseFileNotFoundError("file {} not found".format(doc))
_,doc_name=os.path.split(doc)
ifnotdoc_name.endswith('.docx'):
raiseTypeError("Only support word doc with suffix '.docx'")
returndoc
def_build_command(doc_path,output_dir,pdf_name=None,pdf_engine=None):
args=['pandoc','--pdf-engine=xelatex']
# args = ['pandoc', '--pdf-engine=lualatex']
ifpdf_engineisnotNone:
# MikTex包含了两种pandoc支持的Tex
ifpdf_enginenotin("xelatex","lualatex"):
raiseValueError("not supported pdf-engine: {}".format(pdf_engine))
else:
args[1]='--pdf-engine={}'.format(pdf_engine)
ifpdf_nameisNone:
pdf_name=str(uuid.uuid4())+'.pdf'
ifnotos.path.isdir(output_dir):
raiseNotADirectoryError("{} is not a existed directory".format(output_dir))
pdf_path=os.path.join(output_dir,pdf_name)
args.append('-o')
args.append(pdf_path)
args.append(doc_path)
# 设置字体避免中文乱码无法输出问题,SimSun是宋体, MicrosoftYaHei是微软雅黑
args.append('-V')
args.append('mainfont="MicrosoftYaHei"')
# args.append('-V')
# args.append('margin-left=0in')
returnargs,pdf_path
defdoc2pdf(source,pdf_path):
doc_path=_load_doc(source)
cmd,output_pdf=_build_command(doc_path,pdf_path)
# run cmd
print("doc to pdf, converting...")
Popen(cmd,stderr=PIPE,stdout=PIPE).communicate()
print("job done!")
returnoutput_pdf
6、pdf2image.py
一个开源的python库,只包含了一个文件,笔者直接复制过来使用的。主要封装了poppler的命令行调用,实现pdf到图片的转换。
Python
"""
pdf2image is a light wrapper for the poppler-utils tools that can convert your
PDFs into Pillow images.
"""
import os
import re
import tempfile
import uuid
from io import BytesIO
from subprocess import Popen, PIPE
from PIL import Image
def convert_from_path(pdf_path, dpi=200, output_folder=None, first_page=None, last_page=None, fmt='ppm', thread_count=1, userpw=None):
"""
Description: Convert PDF to Image will throw whenever one of the condition is reached
Parameters:
pdf_path -> Path to the PDF that you want to convert
dpi -> Image quality in DPI (default 200)
output_folder -> Write the resulting images to a folder (instead of directly in memory)
first_page -> First page to process
last_page -> Last page to process before stopping
fmt -> Output image format
thread_count -> How many threads we are allowed to spawn for processing
userpw -> PDF's password
"""
page_count = __page_count(pdf_path, userpw)
if thread_count < 1:
thread_count = 1
if first_page is None:
first_page = 1
if last_page is None or last_page > page_count:
last_page = page_count
# Recalculate page count based on first and last page
page_count = last_page - first_page + 1
if thread_count > page_count:
thread_count = page_count
reminder = page_count % thread_count
current_page = first_page
processes = []
for _ in range(thread_count):
# A unique identifier for our files if the directory is not empty
uid = str(uuid.uuid4())
# Get the number of pages the thread will be processing
thread_page_count = page_count // thread_count + int(reminder > 0)
# Build the command accordingly
args, parse_buffer_func = __build_command(['pdftoppm', '-r', str(dpi), pdf_path], output_folder, current_page, current_page + thread_page_count - 1, fmt, uid, userpw)
# Update page values
current_page = current_page + thread_page_count
reminder -= int(reminder > 0)
# Spawn the process and save its uuid
processes.append((uid, Popen(args, stdout=PIPE, stderr=PIPE)))
images = []
for uid, proc in processes:
data, _ = proc.communicate()
if output_folder is not None:
images += __load_from_output_folder(output_folder, uid)
else:
images += parse_buffer_func(data)
return images
def convert_from_bytes(pdf_file, dpi=200, output_folder=None, first_page=None, last_page=None, fmt='ppm', thread_count=1, userpw=None):
"""
Description: Convert PDF to Image will throw whenever one of the condition is reached
Parameters:
pdf_file -> Bytes representing the PDF file
dpi -> Image quality in DPI
output_folder -> Write the resulting images to a folder (instead of directly in memory)
first_page -> First page to process
last_page -> Last page to process before stopping
fmt -> Output image format
thread_count -> How many threads we are allowed to spawn for processing
userpw -> PDF's password
"""
with tempfile.NamedTemporaryFile('wb') as f:
f.write(pdf_file)
f.flush()
return convert_from_path(f.name, dpi=dpi, output_folder=output_folder, first_page=first_page, last_page=last_page, fmt=fmt, thread_count=thread_count, userpw=userpw)
def pdf_page_count(pdf, password=None):
return __page_count(pdf, password)
def __build_command(args, output_folder, first_page, last_page, fmt, uid, userpw):
if first_page is not None:
args.extend(['-f', str(first_page)])
if last_page is not None:
args.extend(['-l', str(last_page)])
parsed_format, parse_buffer_func = __parse_format(fmt)
if parsed_format != 'ppm':
args.append('-' + parsed_format)
if output_folder is not None:
args.append(os.path.join(output_folder, uid))
if userpw is not None:
args.extend(['-upw', userpw])
return args, parse_buffer_func
def __parse_format(fmt):
if fmt[0] == '.':
fmt = fmt[1:]
if fmt == 'jpeg' or fmt == 'jpg':
return 'jpeg', __parse_buffer_to_jpeg
if fmt == 'png':
return 'png', __parse_buffer_to_png
# Unable to parse the format so we'll use the default
return 'ppm', __parse_buffer_to_ppm
def __parse_buffer_to_ppm(data):
images = []
index = 0
while index < len(data):
code, size, rgb = tuple(data[index:index + 40].split(b'\n')[0:3])
size_x, size_y = tuple(size.split(b' '))
file_size = len(code) + len(size) + len(rgb) + 3 + int(size_x) * int(size_y) * 3
images.append(Image.open(BytesIO(data[index:index + file_size])))
index += file_size
return images
def __parse_buffer_to_jpeg(data):
return [
Image.open(BytesIO(image_data + b'\xff\xd9'))
for image_data in data.split(b'\xff\xd9')[:-1] # Last element is obviously empty
]
def __parse_buffer_to_png(data):
images = []
index = 0
while index < len(data):
file_size = data[index:].index(b'IEND') + 8 # 4 bytes for IEND + 4 bytes for CRC
images.append(Image.open(BytesIO(data[index:index+file_size])))
index += file_size
return images
def __page_count(pdf_path, userpw=None):
try:
if userpw is not None:
proc = Popen(["pdfinfo", pdf_path, '-upw', userpw], stdout=PIPE, stderr=PIPE)
else:
proc = Popen(["pdfinfo", pdf_path], stdout=PIPE, stderr=PIPE)
out, err = proc.communicate()
except:
raise Exception('Unable to get page count. Is poppler installed and in PATH?')
try:
# This will throw if we are unable to get page count
return int(re.search(r'Pages:\s+(\d+)', out.decode("utf8", "ignore")).group(1))
except:
raise Exception('Unable to get page count. %s' % err.decode("utf8", "ignore"))
def __load_from_output_folder(output_folder, uid):
return [Image.open(os.path.join(output_folder, f)) for f in sorted(os.listdir(output_folder)) if uid in f]
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"""
pdf2image is a light wrapper for the poppler-utils tools that can convert your
PDFs into Pillow images.
"""
importos
importre
importtempfile
importuuid
fromioimportBytesIO
fromsubprocessimportPopen,PIPE
fromPILimportImage
defconvert_from_path(pdf_path,dpi=200,output_folder=None,first_page=None,last_page=None,fmt='ppm',thread_count=1,userpw=None):
"""
Description: Convert PDF to Image will throw whenever one of the condition is reached
Parameters:
pdf_path -> Path to the PDF that you want to convert
dpi -> Image quality in DPI (default 200)
output_folder -> Write the resulting images to a folder (instead of directly in memory)
first_page -> First page to process
last_page -> Last page to process before stopping
fmt -> Output image format
thread_count -> How many threads we are allowed to spawn for processing
userpw -> PDF's password
"""
page_count=__page_count(pdf_path,userpw)
ifthread_count<1:
thread_count=1
iffirst_pageisNone:
first_page=1
iflast_pageisNoneorlast_page>page_count:
last_page=page_count
# Recalculate page count based on first and last page
page_count=last_page-first_page+1
ifthread_count>page_count:
thread_count=page_count
reminder=page_count%thread_count
current_page=first_page
processes=[]
for_inrange(thread_count):
# A unique identifier for our files if the directory is not empty
uid=str(uuid.uuid4())
# Get the number of pages the thread will be processing
thread_page_count=page_count//thread_count+int(reminder>0)
# Build the command accordingly
args,parse_buffer_func=__build_command(['pdftoppm','-r',str(dpi),pdf_path],output_folder,current_page,current_page+thread_page_count-1,fmt,uid,userpw)
# Update page values
current_page=current_page+thread_page_count
reminder-=int(reminder>0)
# Spawn the process and save its uuid
processes.append((uid,Popen(args,stdout=PIPE,stderr=PIPE)))
images=[]
foruid,procinprocesses:
data,_=proc.communicate()
ifoutput_folderisnotNone:
images+=__load_from_output_folder(output_folder,uid)
else:
images+=parse_buffer_func(data)
returnimages
defconvert_from_bytes(pdf_file,dpi=200,output_folder=None,first_page=None,last_page=None,fmt='ppm',thread_count=1,userpw=None):
"""
Description: Convert PDF to Image will throw whenever one of the condition is reached
Parameters:
pdf_file -> Bytes representing the PDF file
dpi -> Image quality in DPI
output_folder -> Write the resulting images to a folder (instead of directly in memory)
first_page -> First page to process
last_page -> Last page to process before stopping
fmt -> Output image format
thread_count -> How many threads we are allowed to spawn for processing
userpw -> PDF's password
"""
withtempfile.NamedTemporaryFile('wb')asf:
f.write(pdf_file)
f.flush()
returnconvert_from_path(f.name,dpi=dpi,output_folder=output_folder,first_page=first_page,last_page=last_page,fmt=fmt,thread_count=thread_count,userpw=userpw)
defpdf_page_count(pdf,password=None):
return__page_count(pdf,password)
def__build_command(args,output_folder,first_page,last_page,fmt,uid,userpw):
iffirst_pageisnotNone:
args.extend(['-f',str(first_page)])
iflast_pageisnotNone:
args.extend(['-l',str(last_page)])
parsed_format,parse_buffer_func=__parse_format(fmt)
ifparsed_format!='ppm':
args.append('-'+parsed_format)
ifoutput_folderisnotNone:
args.append(os.path.join(output_folder,uid))
ifuserpwisnotNone:
args.extend(['-upw',userpw])
returnargs,parse_buffer_func
def__parse_format(fmt):
iffmt[0]=='.':
fmt=fmt[1:]
iffmt=='jpeg'orfmt=='jpg':
return'jpeg',__parse_buffer_to_jpeg
iffmt=='png':
return'png',__parse_buffer_to_png
# Unable to parse the format so we'll use the default
return'ppm',__parse_buffer_to_ppm
def__parse_buffer_to_ppm(data):
images=[]
index=0
whileindex
code,size,rgb=tuple(data[index:index+40].split(b'\n')[0:3])
size_x,size_y=tuple(size.split(b' '))
file_size=len(code)+len(size)+len(rgb)+3+int(size_x)*int(size_y)*3
images.append(Image.open(BytesIO(data[index:index+file_size])))
index+=file_size
returnimages
def__parse_buffer_to_jpeg(data):
return[
Image.open(BytesIO(image_data+b'\xff\xd9'))
forimage_dataindata.split(b'\xff\xd9')[:-1]# Last element is obviously empty
]
def__parse_buffer_to_png(data):
images=[]
index=0
whileindex
file_size=data[index:].index(b'IEND')+8# 4 bytes for IEND + 4 bytes for CRC
images.append(Image.open(BytesIO(data[index:index+file_size])))
index+=file_size
returnimages
def__page_count(pdf_path,userpw=None):
try:
ifuserpwisnotNone:
proc=Popen(["pdfinfo",pdf_path,'-upw',userpw],stdout=PIPE,stderr=PIPE)
else:
proc=Popen(["pdfinfo",pdf_path],stdout=PIPE,stderr=PIPE)
out,err=proc.communicate()
except:
raiseException('Unable to get page count. Is poppler installed and in PATH?')
try:
# This will throw if we are unable to get page count
returnint(re.search(r'Pages:\s+(\d+)',out.decode("utf8","ignore")).group(1))
except:
raiseException('Unable to get page count. %s'%err.decode("utf8","ignore"))
def__load_from_output_folder(output_folder,uid):
return[Image.open(os.path.join(output_folder,f))forfinsorted(os.listdir(output_folder))ifuidinf]
7、main.py
入口主程序,传入doc文档,得到png图片^_^
Python
import os
import time
from PIL import Image
from PIL import ImageFont
from PIL import ImageDraw
from config import *
from pdf2image import convert_from_path, pdf_page_count
from doc2pdf import doc2pdf
def doc2image(doc, fmt='png', output_dir=None, watermark=None, fpage=None, lpage=None):
if output_dir is None:
output_dir = TARGET_DIR
target_name = os.path.join(output_dir, "{}.{}".format(int(time.time()), fmt))
temp_pdf = doc2pdf(doc, pdf_path=DEFAULT_OUTPUT_DIR)
if fpage is None:
fpage = 1
if lpage is not None:
page_count = lpage - fpage + 1
else:
page_count = pdf_page_count(temp_pdf)
print("pdf to image, converting...")
to_image = _convert_pdf_to_image(temp_pdf, page_count, fmt, fpage, lpage)
if watermark is not None:
watermark_image = _make_watermark_image(to_image.size, watermark, page_count)
# 合并内容图片和水印图片
out = Image.alpha_composite(to_image, watermark_image)
# out.show()
# 转换为RGB模式才可保存为图片
out.convert("RGB").save(target_name)
else:
to_image.save(target_name)
print("job done!")
def _convert_pdf_to_image(pdf, page_count, fmt, f, l, save=False):
'''
params:
pdf: 待转换的pdf文件路径
page_count: 要转换的页数
fmt: 转换的图片格式
f: 要转换的开始页数
l: 结束页数
save: 是否保留pdf文件,默认不保留
'''
# 根据页数转换为相应数量的图片
image_list = convert_from_path(pdf, fmt=fmt, first_page=f, last_page=l)
target_name = os.path.join(TARGET_DIR, "{}.{}".format(int(time.time()), fmt))
to_image = Image.new('RGBA', (IMAGE_WIDTH, page_count * IMAGE_HEIGHT))
for i, image in enumerate(image_list):
# 计算高度,拼合单张图片到一整张图片上
loc = (0, i * IMAGE_HEIGHT)
to_image.paste(image, loc)
if not save:
try:
os.remove(pdf)
except Exception as e:
print("fail to remove pdf, please check and remove it manually")
return to_image
def _make_watermark_image(image_size, watermark, count=1):
'''
生成水印图片
params:
image_size: 水印图片大小,与底板图片大小一致
watermark: 水印文本
count: 水印数量, 与内容页数保持一致
'''
fnt = ImageFont.truetype(font=FONT_FILE, size=80)
watermark_image = Image.new('RGBA', image_size, color=BACKGROUND_COLOR)
draw = ImageDraw.Draw(watermark_image)
for i in range(1, count+1):
draw.multiline_text((WATERMARK_LEFT, WATERMARK_TOP * i), watermark, font=fnt, fill=FONT_COLOR)
return watermark_image
if __name__ == '__main__':
txt = "玩点coding https://vdcoding.com"
doc = "resume.docx"
doc2image(doc, watermark=txt)
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importos
importtime
fromPILimportImage
fromPILimportImageFont
fromPILimportImageDraw
fromconfigimport*
frompdf2imageimportconvert_from_path,pdf_page_count
fromdoc2pdfimportdoc2pdf
defdoc2image(doc,fmt='png',output_dir=None,watermark=None,fpage=None,lpage=None):
ifoutput_dirisNone:
output_dir=TARGET_DIR
target_name=os.path.join(output_dir,"{}.{}".format(int(time.time()),fmt))
temp_pdf=doc2pdf(doc,pdf_path=DEFAULT_OUTPUT_DIR)
iffpageisNone:
fpage=1
iflpageisnotNone:
page_count=lpage-fpage+1
else:
page_count=pdf_page_count(temp_pdf)
print("pdf to image, converting...")
to_image=_convert_pdf_to_image(temp_pdf,page_count,fmt,fpage,lpage)
ifwatermarkisnotNone:
watermark_image=_make_watermark_image(to_image.size,watermark,page_count)
# 合并内容图片和水印图片
out=Image.alpha_composite(to_image,watermark_image)
# out.show()
# 转换为RGB模式才可保存为图片
out.convert("RGB").save(target_name)
else:
to_image.save(target_name)
print("job done!")
def_convert_pdf_to_image(pdf,page_count,fmt,f,l,save=False):
'''
params:
pdf: 待转换的pdf文件路径
page_count: 要转换的页数
fmt: 转换的图片格式
f: 要转换的开始页数
l: 结束页数
save: 是否保留pdf文件,默认不保留
'''
# 根据页数转换为相应数量的图片
image_list=convert_from_path(pdf,fmt=fmt,first_page=f,last_page=l)
target_name=os.path.join(TARGET_DIR,"{}.{}".format(int(time.time()),fmt))
to_image=Image.new('RGBA',(IMAGE_WIDTH,page_count*IMAGE_HEIGHT))
fori,imageinenumerate(image_list):
# 计算高度,拼合单张图片到一整张图片上
loc=(0,i*IMAGE_HEIGHT)
to_image.paste(image,loc)
ifnotsave:
try:
os.remove(pdf)
exceptExceptionase:
print("fail to remove pdf, please check and remove it manually")
returnto_image
def_make_watermark_image(image_size,watermark,count=1):
'''
生成水印图片
params:
image_size: 水印图片大小,与底板图片大小一致
watermark: 水印文本
count: 水印数量, 与内容页数保持一致
'''
fnt=ImageFont.truetype(font=FONT_FILE,size=80)
watermark_image=Image.new('RGBA',image_size,color=BACKGROUND_COLOR)
draw=ImageDraw.Draw(watermark_image)
foriinrange(1,count+1):
draw.multiline_text((WATERMARK_LEFT,WATERMARK_TOP*i),watermark,font=fnt,fill=FONT_COLOR)
returnwatermark_image
if__name__=='__main__':
txt="玩点coding https://vdcoding.com"
doc="resume.docx"
doc2image(doc,watermark=txt)
三、待完善的地方
笔者从网上下载了份docx格式的简历模板,通过上边的程序转换后得到的图片如下:
从图中可以看到个人信息部分的样式跑偏了,这部分是在docx->pdf过程中的排版引擎决定的,所以想要获得完美的图片,先要好好研究下排版引擎的使用,排版引擎可以加载多种扩展包,用来支持不同的排版格式。笔者只是兴趣使然,在短时间内实现了docx到图片的转换,没有深入研究排版引擎部分。关于这种转换笔者能力有限,只能以这种繁琐的方式实现,不过笔者倒是很好奇BOSS直聘是如何实现的,如果有机会真心希望交流一下。
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