分页功能代码：

1 from django.shortcuts import render 2  3 # Create your views here. 4  5 from app01 import models 6  7  8  9 def books(request):10     #从URL取参数11     page_num = request.GET.get("page")12     print(page_num,type(page_num))13     # 每一页显示多少条数据14     per_page = 1015     # 总数据是多少16     total_count = models.Book.objects.all().count()17     # 总共需要多少页码来展示18     total_page, m = divmod(total_count, per_page)19     if m:20         total_page += 121     try:22         page_num = int(page_num)23         # 如果输入的页码数超过了最大的页码数，默认返回最后一页的数据24         if page_num > total_page:25             page_num = total_page26     except Exception as e:27         #当输入的页码不是正经数字的时候，默认返回第一页的数据28         page_num = 129 30 31     #定义两个变量保存数据从哪儿取到哪儿32     data_start = (page_num-1)*1033     data_end = page_num*1034 35 36 37     #页面总共展示多少页码38     max_page = 1139     if total_page < max_page:40         max_page = total_page41 42 43     half_max_page = max_page // 244     #页面上展示的页码从哪儿开始45     page_start = page_num - half_max_page46     #页面上展示的页码到哪儿结束47     page_end = page_num + half_max_page48     #如果当前页减一半，比1还小49     if page_start <= 1:50         page_start = 151         page_end = max_page52 53     #如果当前页加一半比总页码数还大54     if page_end >= total_page:55         page_end = total_page56         page_start = total_page - max_page +157 58     all_book = models.Book.objects.all()[data_start:data_end]59 60     #自己拼接分页的HTML代码61     html_str_list = []62     #加上第一页63     html_str_list.append('
首页
')64     #加上一个上一页的标签65     #判断，如果是第一页就没有上一页了66     if page_num <= 1:67         html_str_list.append(' 
«
')68     else:69         #加上一个上一页的功能70         html_str_list.append(' 
«
'.format(page_num-1))71 72     for i in range(page_start,page_end +1):73         #如果是当前页就加一个active样式类74         # if i == page_num:75         #     tmp = '
{0}
'.format(i)76         # else:77         if i == page_num:78             tmp = '
{0}
'.format(i)79         else:80             tmp = '
{0}
'.format(i)81 82         html_str_list.append(tmp)83 84     #加上一个下一页的标签85     #判断，如果是最后一页，就没有下一页86     if page_num >= total_page:87         html_str_list.append('
»
')88     else:89         html_str_list.append('
»
'.format(page_num+1))90     #加上最后一页91     html_str_list.append('
末页
'.format(total_page))92 93     page_html = "".join(html_str_list)94 95 96 97     return render(request,'books.html',{
   'books':all_book,"page_html":page_html})