爬取中国国际招标网（https://zggj.zbytb.com/搜索-中国招标与采购网https://zggj.zbytb.com/），并将爬取的数据存储到数据库中，效果图如下：

1、建立数据库和表

数据表——zhaobiao

这里的字段看自己所需。

2、分析中国国际招标网网页

我们大概需要的数据是标题、公告类型、发布时间、省份、公告内容等，所以这里当我们进入网页的第一页时，需要获取分页链接以及公告内容的链接。

① 翻页：

② 公告内容：

3、代码编写

① 连接数据库

下面用户密码等填自己的。

import pymysql
db = pymysql.connect(host='',  # 连接名称
                     user='',  # 用户名称
                     password='',  # 密码
                     database='')  # 数据库名称

print('数据库连接成功')

cursor = db.cursor()

② 分析搜索-中国招标与采购网页面

获取总页数，注意是post还是get请求，这里是post请求

    try:
        print("中国国际招标网，正在获取数据列表")
        r = requests.post(
            'https://www.zbytb.com/search/',
            headers=headers,
            data=data_params,
            timeout=30)
        if r.status_code == 200:
            soup = BeautifulSoup(r.content, 'html.parser')
            # print(soup)
            pages = soup.find('div', class_='pages').find_all('a')[0].get('href').split('page=')[1]
            print(pages)
            print("获取数据成功，获取总页数为：" + str(pages) + "页")
    except Exception as e:
        data = {
            "msg": "获取数据页数，目标url访问失败，中国国际招标网",
            "code": "501",
            "err_msg": e
        }
        print(data["msg"])
        return data

获取每一条招标信息，这里就是get请求

r = requests.get(
                f'https://www.zbytb.com/search/?kw=&okw=&catid=0&zizhi=&zdxm=&zdyear=&field=&moduleid=25&areaids=&page={page}',
                headers=headers,
                timeout=60)

提取招标标题，时间，公告类型，每一条招标信息的详细页面的url以及省份

提取每一条招标信息的详细页面

content_r = requests.get(url, headers=headers, timeout=500, verify=False)

③ 插入数据库中

"""上传至数据库中"""
sql = ('insert into zhaobiao(title,btype_name,pubdate,content,data_source,region_name) '
       'VALUES(%s, %s, %s, %s, %s, %s)')
try:
    cursor.execute("SELECT * FROM zhaobiao WHERE data_source = %s", (url,))
    existing_user = cursor.fetchone()
    if not existing_user:  # 如果不存在重复记录才执行插入操作
        cursor.execute(sql, (
            Title, BTypeName, PubDate, detail, url, RegionName))
        db.commit()
    else:
        print(f"{url} 已存在，不进行插入操作")
except Exception as e:
    db.rollback()
    print(e)

4、代码

import random
import time

import requests
from bs4 import BeautifulSoup
import urllib3

def zhaoBiao4_mian():
    headers = {
        "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.3",
        "Accept-Language": "en-US,en;q=0.9",
        "Accept-Encoding": "gzip, deflate",
        "Referer": "https://www.google.com",
        "Connection": "keep-alive",
        "Cookie": cookies # cookie需要自行加
    }
    data_params = {
        "moduleid": 25,
        "areaids": "",
        "exareaid": "",
        "field": "",
        "okw": "",
        "obiao": 0,
        "zizhi": "",
        "search": 1,
        "kw": "",
    }
    try:
        r = requests.post(
            'https://www.zbytb.com/search/',
            headers=headers,
            data=data_params,
            timeout=30)
        if r.status_code == 200:
            soup = BeautifulSoup(r.content, 'html.parser')
            pages = soup.find('div', class_='pages').find_all('a')[0].get('href').split('page=')[1]
    except Exception as e:
        data = {
            "msg": "获取数据页数，目标url访问失败",
            "code": "501",
            "err_msg": e
        }
        print(data["msg"])
        return data

    """处理数据流"""
    shuju = 0
    for page in range(1, int(pages) + 1):
        shuju_page = 0
        time.sleep(random.uniform(1, 3))
        try:
            r = requests.get(
                f'https://www.zbytb.com/search/?kw=&okw=&catid=0&zizhi=&zdxm=&zdyear=&field=&moduleid=25&areaids=&page={page}',
                headers=headers,
                timeout=60)
            if r.status_code == 200:
                soup = BeautifulSoup(r.content, 'html.parser')
                print(soup.find('div', class_='list-box simple'))
                data_list = soup.find('div', class_='list-box simple').find('ul').find_all('li')
                for data in data_list:
                    time.sleep(random.uniform(1, 3))
                    shuju_page = shuju_page + 1
                    shuju = shuju + 1
                    title_div = data.find('div', class_='title')
                    url = title_div.find('a')['href']
                    Title = title_div.find('a').get_text().strip()

                    BTypeName = title_div.find('a').get_text()[-4:]

                    PubDate = title_div.find('span').get_text().strip()

                    title_div_span = title_div.find('span', class_='lszz')

                    if title_div_span.find('a'):
                        # 如果存在<a>标签，则取<a>标签的文本内容
                        RegionName = title_div_span.find('a').get_text().replace(' » ', '')
                    else:
                        # 否则，取<span>标签的文本内容
                        RegionName = title_div_span.get_text()

                    """获取内容"""
                    print(url)
                    print("正在抓取****************")
                    try:
                        content_r = requests.get(url, headers=headers, timeout=500, verify=False)
                    except:
                        time.sleep(random.uniform(1, 3))
                        content_r = requests.get(url, headers=headers, timeout=500, verify=False)
                    if content_r.status_code == 200:
                        soup1 = BeautifulSoup(content_r.content, "html.parser", from_encoding="gb18030")
                        detail = soup1.find("div", id="content")
                        data_updata["Content_text"] = str(detail)

                        """上传至数据库中"""
                        sql = ('insert into zhaobiao(title,btype_name,pubdate,content,data_source,region_name) '
                                   'VALUES(%s, %s, %s, %s, %s, %s)')

                        try:
                            cursor.execute("SELECT * FROM zhaobiao WHERE data_source = %s", (url,))
                            existing_user = cursor.fetchone()

                            if not existing_user:  # 如果不存在重复记录才执行插入操作
                                cursor.execute(sql, (
                                    Title, BTypeName, PubDate, detail, url, RegionName))
                                db.commit()
                            else:
                                print(f"{url} 已存在，不进行插入操作")
                        except Exception as e:
                            db.rollback()
                            print(e)
                    else:
                        data = {
                            "msg": "获取详细数据，目标url访问失败，中国国际招标网",
                            "code": "503",
                            "err_msg": r.json()
                        }
                        return data
        except Exception as e:
            data = {
                "code": 502,
                "msg": "中国国际招标网，单个数据抓取失败？？？？？？？？？？？？？？？？？？？？？？？？？？？？？",
                "err_msg": e
            }
            print(data["msg"])
            return data
if __name__ == '__main__':
    data_msg = zhaoBiao4_mian()  # 中国国际招标网

本教程仅供教学使用，严禁用于商业用途！