python爬虫实战之爬取智联职位信息和博客文章信息

1.python爬取招聘信息

简单爬取智联招聘职位信息

# ！/usr/bin/env python
# -*-coding:utf-8-*-
"""
@Author  : xiaofeng
@Time    : 2018/12/18 16:31
@Desc : Less interests,More interest. (爬取智联招聘职位数据)
@Project : python_appliction
@FileName: zhilianzhaopin.py
@Software: PyCharm
@Blog    ：https://blog.csdn.net/zwx19921215
"""

import pymysql as db
import requests

# mysql配置信息
mysql_config = {
    'host': '101.0.2.110',
    'user': 'test',
    'password': 'test',
    'database': 'xiaofeng',
    'charset': 'utf8'
}

# url
url = 'https://data.highpin.cn/api/JobSearch/Search'

"""
爬取智联招聘职位数据
@:param page 页码
@:param position 职位关键字
"""

def zhilian(page, position):
    # 封装头信息
    headers = {
        'Referer': 'https://www.highpin.cn/zhiwei/',
        'Origin': 'https://www.highpin.cn',
        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36',
        'Accept': 'application/json, text/javascript, * / *; q=0.01',
    }
    # 表单信息
    datas = {
        'Q': position,
        'pageIndex': page
    }
    resp = requests.post(url, data=datas, headers=headers)
    result = resp.json()
    return result

"""
控制台输出
"""

def print_data(result):
    body = result['body']['JobList']
    print(body)

"""
数据入库
"""

def insert(result):
    print("insert......")
    database = db.connect(**mysql_config)
    for item in result:
        print(item)
        sql = "INSERT INTO zhilian(JobID,JobTitle,ReferrerType,CompanyName,AnnualSalaryMin," \
              "AnnualSalaryMax,JobLactionStr,JobLactionID,JobTags\
        ,JobDegree,JobDegreeId,WorkExperience,WorkExperienceID,CompanyIndustry,CompanyIndustryID," \
              "CompanyType,CompanyTypeID,PublishDate,CompanyScale,SalaryWhite) \
              VALUES (%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s)"

        # list convert to str
        JobLactionID = str(item['JobLactionID'])
        CompanyIndustryID = str(item['CompanyIndustryID'])

        if 'JobTags' in item:
            JobTags = str(item['JobTags'])
        else:
            JobTags = ''
        cursor = database.cursor()
        cursor.execute(sql, (
            item['JobID'], item['JobTitle'], item['ReferrerType'], item['CompanyName'], item['AnnualSalaryMin'],
            item['AnnualSalaryMax'],
            item['JobLactionStr'], JobLactionID, JobTags, item['JobDegree'], item['JobDegreeId'],
            item['WorkExperience'],
            item['WorkExperienceID'], item['CompanyIndustry'], CompanyIndustryID, item['CompanyType'],
            item['CompanyTypeID'], item['PublishDate'], item['CompanyScale'], item['SalaryWhite']))
        database.commit()
        cursor.close()
    database.close()

def main(position):
    result = zhilian(1, position)
    page_count = result['body']['PageCount']
    print("---------------共", page_count, "页-------------")
    page = 1
    while page <= page_count:
        print('----------------第', page, '页-----------------')
        result = zhilian(page, position)
        # print_data(result)
        body = result['body']['JobList']
        insert(body)
        page = page + 1

if __name__ == '__main__':
    main('java')

　　

控制台输出信息

入库数据

2.python爬取csdn博客文章

python简单爬取csdn博客文章列表（仅供学习）

步骤：

1.分页获取博客url

2.解析html 获取指定信息

# ！/usr/bin/env python
# -*-coding:utf-8-*-
"""
@Author  : xiaofeng
@Time    : 2018/12/20 11:30
@Desc : Less interests,More interest.（爬取csdn博客文章列表）
@Project : python_appliction
@FileName: csdn.py
@Software: PyCharm
@Blog    ：https://blog.csdn.net/zwx19921215
"""
import requests
from lxml import html

# 声明头信息
headers = {
    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36 SE 2.X MetaSr 1.0'
}

"""
解析html，获取相关数据
@:param url 网页路径
"""

def parse_html(url):
    response = requests.get(url=url, headers=headers)
    text = html.fromstring(response.text)
    hrefs = text.xpath('//h4/a/@href')
    title = text.xpath('//h4/a/text()')
    """
    文章摘要、发布日期、阅读数、评论数等其余属性自行按需获取即可
    """
    # 移出第一个元素链接，不知道为啥 csdn 博客默认都多了一条数据，也就多了一个链接
    hrefs.pop(0)
    titles = []
    # 格式化标题
    for item in title:
        st = str(item).replace('\n', '').strip()
        if st != '':
            titles.append(st)

    # 组合输出
    # 移出第一个元素，不知道为啥 csdn 博客默认都多了一条数据 “帝都的凛冬”
    titles.pop(0)
    i = 0
    for item in titles:
        results = {
            '标题': titles[i],
            '链接': hrefs[i]
        }
        i = i + 1
        print(results)

"""
自动判断页数
@:param page_url 页面路径
@:param page 页号
"""

def get_page(page_url, page):
    url = page_url + str(page)
    print('url=', url)
    response = requests.get(url=url, headers=headers)
    text = html.fromstring(response.text)
    next_page = text.xpath(
        '//div[@class="ui-paging-container"]/ul/li[@class="js-page-next js-page-action ui-pager"]/text()')
    if next_page:
        parse_html(url)
        page = page + 1
        get_page(page_url, page)
    else:
        return -1

"""
分页爬取相关数据
@:param page_url 页面路径
@:param page 页号
"""

def get_page2(page_url, page):
    url = page_url + str(page)
    while page <= 10:
        print('\n')
        print("----------------------第", page, "页--------------------")
        print('url=', url)
        print('\n')
        parse_html(url)
        page = page + 1
        url = page_url + str(page)

if __name__ == '__main__':
    page_url = 'https://blog.csdn.net/zwx19921215/article/list/'
    get_page2(page_url, 1)

　

　

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