鉴于有些小伙伴在寻找博客园迁移到个人博客的方案，本人针对博客园实现了一个自动备份脚本，可以快速将博客园中自己的文章备份成Markdown格式的独立文件，备份后的md文件可以直接放入到hexo博客中，快速生成自己的站点，而不需要自己逐篇文章迁移，提高了备份文章的效率。

首先第一步将博客园主题替换为codinglife默认主题，第二步登录到自己的博客园后台，然后选择博客备份，备份所有的随笔文章，如下所示：

备份出来以后将其命名为backup.xml，然后新建一个main.py脚本，以及一个blog目录，代码实现的原理是，解析xml格式并依次提取出文档内容，然后分别保存为markdown文件。

转存文章到MD: 写入备份脚本，代码如下所示，运行后即可自动转存文件到blog目录下，当运行结束后备份也就结束了。

# powerby: LyShark
# blog: www.cnblogs.com/lyshark
from bs4 import BeautifulSoup
import requests, os,reheader = {"User-Agent": "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) By LyShark CnblogsBlog Backup Script"}# 获取文章,并转成markdown
# blog: www.lyshark.com
def GetMarkDown(xml_file):con = open(xml_file, 'r', encoding='utf8').read()# 每篇文章都在 <item> 标签里items = re.findall("<item>.*?</item>", con, re.I | re.M | re.S)ele2 = ['<title>(.+?)</title>', '<link>(.+?)</link>', '<description>(.+?)</description>']# md_name = xml_file.split('.xml')[0] + '.md'for item in items:try:title = re.findall(ele2[0], item, re.I | re.S | re.M)[0]link = re.findall(ele2[1], item, re.I | re.S | re.M)[0]des = re.findall(ele2[2], item, re.I | re.S | re.M)[0]des = re.findall('<!\[CDATA\[(.+?)\]\]>', des, re.I | re.S | re.M)[0]  # CDATA 里面放的是文章的内容des = des.replace('~~~', "```")lines = des.split('\n')with open("./blog/" + title.replace("/","") + ".md", mode='w+', encoding='utf8') as f:f.write("---\n")f.write("title: '{}'\n".format(title.replace("##","").replace("###","").replace("-","").replace("*","").replace("<br>","").replace(":","").replace("：","").replace(" ","").replace(" ","").replace("`","")))f.write("copyright: true\n")setdate = "2018-12-27 00:00:00"try:# 读取时间response = requests.get(url=link, headers=header)print("读取状态: {}".format(response.status_code))if response.status_code == 200:bs = BeautifulSoup(response.text, "html.parser")ret = bs.select('span[id="post-date"]')[0]setdate = str(ret.text)passelse:f.write("date: '2018-12-27 00:00:00'\n")except Exception:f.write("date: '2018-12-27 00:00:00'\n")passf.write("date: '{}'\n".format(setdate))# description检测description_check = lines[0].replace("##","").replace("###","").replace("-","").replace("*","").replace("<br>","").replace(":","").replace("：","").replace(" ","").replace(" ","")if description_check == "":f.write("description: '{}'\n".format("该文章暂无概述"))elif description_check == "```C":f.write("description: '{}'\n".format("该文章暂无概述"))elif description_check == "```Python":f.write("description: '{}'\n".format("该文章暂无概述"))else:f.write("description: '{}'\n".format(description_check))print("[*] 时间: {} --> 标题: {}".format(setdate, title))f.write("tags: '{}'\n".format("tags10245"))f.write("categories: '{}'\n".format("categories10245"))f.write("---\n\n")f.write('%s' %des)f.close()except Exception:passif __name__ == "__main__":GetMarkDown("backup.xml")

备份后的效果如下所示：

打开Markdown格式看一下，此处的标签和分类使用了一个别名，在备份下来以后，你可以逐个区域进行替换，将其替换成自己需要的分类类型即可。

转存图片到本地: 接着就是继续循环将博客中所有图片备份下来，同样新建一个image文件夹，并运行如下代码实现备份。

# powerby: LyShark
# blog: www.cnblogs.com/lyshark
from bs4 import BeautifulSoup
import requests, os,reheader = {"User-Agent": "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) By LyShark CnblogsBlog Backup Script"}# 从备份XML中找到URL
# blog: www.cnblogs.com/lyshark
def GetURL(xml_file):blog_url = []con = open(xml_file, 'r', encoding='utf8').read()items = re.findall("<item>.*?</item>", con, re.I | re.M | re.S)ele2 = ['<title>(.+?)</title>', '<link>(.+?)</link>', '<description>(.+?)</description>']for item in items:title = re.findall(ele2[0], item, re.I | re.S | re.M)[0]link = re.findall(ele2[1], item, re.I | re.S | re.M)[0]print("标题: {} --> URL: {} ".format(title,link))blog_url.append(link)return blog_url# 下载所有图片
# blog: www.lyshark.com
def DownloadURLPicture(url):params = {"encode": "utf-8"}response = requests.get(url=url, params=params, headers=header)# print("网页编码方式: {} -> {}".format(response.encoding,response.apparent_encoding))context = response.text.encode(response.encoding).decode(response.apparent_encoding, "ignore")try:bs = BeautifulSoup(context, "html.parser")ret = bs.select('div[id="cnblogs_post_body"] p img')for item in ret:try:img_src_path = item.get("src")img_src_name = img_src_path.split("/")[-1]print("[+] 下载图片: {} ".format(img_src_name))img_download = requests.get(url=img_src_path, headers=header, stream=True)with open("./image/" + img_src_name, "wb") as fp:for chunk in img_download.iter_content(chunk_size=1024):fp.write(chunk)except Exception:print("下载图片失败: {}".format(img_src_name))passexcept Exception:passif __name__ == "__main__":url = GetURL("backup.xml")for u in url:DownloadURLPicture(u)

备份后的效果如下：

替换文章内的图片链接地址，可以使用编辑器，启用正则批量替换。

当把博客备份下来以后你就可以把这些文章拷贝到hexo博客_post目录下面，然后hexo命令快速渲染生成博客园的镜像站点，这样也算是增加双保险了。