def updateInfo(self, item, newlinks, oldlinks):
		'''爬虫爬完之后对数据库内容进行更新'''
		cur = self.conn.cursor()
		cur.execute("SELECT wid,did FROM Websites WHERE url=?", (item['url'],))
		wid, did = cur.fetchone()
		# website记录更新
		cur.execute("UPDATE Websites SET title=?,visited=1 WHERE wid=?", (item['title'], wid,))
		# 对应的domain记录中出度也需要更新
		cur.execute("UPDATE Domains SET outdegree=outdegree+? WHERE did=?", (len(item['links']), did,))

		# 对该网页中所有链接涉及的记录进行更新
		# 外部判断未出现过的链接
		for link,domain in newlinks:
			self.insertWebsite(link, domain)

		# 外部判断出现过的链接
		for link,domain in oldlinks:
			# 对对应的domain记录入度增加
			cur.execute("UPDATE Domains SET outdegree=outdegree+1 WHERE domain=?", (domain,))
		# 写入到文件
		self.conn.commit()
def edit_tool_type(request, ttid):
    tool_type = Tool_Type.objects.get(pk=ttid)
    if request.method == 'POST':
        tform = ToolTypeForm(request.POST, instance=tool_type)
        if tform.is_valid():
            tform.save()
            messages.add_message(request,
                                 messages.SUCCESS,
                                 'Tool Type Configuration Successfully Updated.',
                                 extra_tags='alert-success')
            return HttpResponseRedirect(reverse('tool_type', ))
    else:
        tform = ToolTypeForm(instance=tool_type)
    add_breadcrumb(title="Edit Tool Type Configuration", top_level=False, request=request)

    return render(request,
                  'dojo/edit_tool_type.html',
                  {
                      'tform': tform,
                  })