HTML文件转换PDF

CentOS安装wkhtmltopdf，及Python转换实现

安装wkhtmltopdf

参考地址：

centos安装wkhtmltopdf有一点复杂，参照第一个链接

为了支持中文，需安装对应字体，参照第二个链接

安装如果出现错误，可参照第三个链接

How To Install wkhtmltopdf In CentOS 7.0

python wkhtmltopdf使用与注意事项

Python pip install fails: invalid command egg_info

安装wkhtmltopdf
- Step 1: Preparation
  
  Login to your CentOS machine. Make sure that you have root access. It is up to you on how you gain a root access by logging in directly as root user or do an su - command.
- Step 2: Install Dependencies
  
  Now that I mentioned it, there are two items needed in order to install the wkhtmltopdf:
  
  xorg-x11-fonts-Type1
  
  xorg-x11-fonts-75dpi
  
  Install the two items with the following command
```
yum install -y xorg-x11-fonts-75dpi
yum install -y xorg-x11-fonts-Type1   
```
- Step 3: Install wkhtmltopdf
  
  Next, download the wkhtmltopdf RPM file.
```
$ wget http://download.gna.org/wkhtmltopdf/0.12/0.12.2.1/wkhtmltox-0.12.2.1_linux-centos7-amd64.rpm
```
  As of the published date, there is no 32-bit version of the said tool available for download. After the file has been downloaded, run the command:
```
$ rpm -Uvh wkhtmltox-0.12.2.1_linux-centos7-amd64.rpm
```
- Step 4: Testing
  
  And now for the test. Run the command (and make sure that the computer is accessible to internet):
```
wkhtmltopdf http://www.google.com.ph google.pdf
# During the generation, it will show something like this:
Loading pages (1/6)
Counting pages (2/6) 
Resolving links (4/6) 
Loading headers and footers (5/6) 
Printing pages (6/6)
Done
```
  If the command generates the from the website to PDF file successfully, again, it is obvious that the wkhtmltopdf is working.
安装中文字体
中文乱码说明：
保证网页编码为UTF-8，GBK、GB2312网上说好像支持不太好，我未测试；
如果导出是乱码，注意不是方框方框，则是网页编码问题；
如果导出是方框方框，表示服务器未安装中文字体，安装字体即可，安装下面说明；
安装中文字体：
- 查看目前安装字体：fc-list
- 下载所需字体,例如msyh.ttf
- mkdir /usr/share/fonts/zh_CN
- mv msyh.ttf /usr/share/fonts/zh_CN
- 执行fc-cache -fv
  查看是否安装成功：fc-list，查看是已安装

Python实现

url = "http://www.google.com"
pdf = pdfkit.from_url(url, False)
abc = StringIO()
abc.write(pdf)
abc.seek(0)
return send_file(abc, attachment_filename="test.pdf",
                 as_attachment=True, mimetype="application/pdf")