爬虫数据储存于mysql数据库

利用python语言下的pandas库存储爬取数据于mysql数据库，相比其余语法代码更为便捷；

代码一：（爬取博客园储存于mysql数据库）
from lxml import etree
import requests
import pandas as pd

创建mysql数据库链接

import pymysql
conn = pymysql.connect(host='localhost', user='root', password='admin',
db='spider', charset='utf8')

获取游标(指定获取的数据格式，这里设定返回dict格式)

cursor = conn.cursor()

爬取URL

recommed_url = 'https://www.cnblogs.com/aggsite/UserStats'
res = requests.get(url=recommed_url).content.decode('utf-8')

ele = etree.HTML(res)
elements = ele.xpath("//[@id='blogger_list']//a/@href")
url_list = ['http:' + ele for ele in elements][:-2]
for url in url_list:
while True:
print(url)
res2 = requests.get(url).content.decode('utf-8')
ele2 = etree.HTML(res2)
word_urls = ele2.xpath('//[@id="mainContent"]/div/div/div[2]/a/@href')
for wordUrl in word_urls:
res3 = requests.get(wordUrl).content.decode('utf-8')
ele3 = etree.HTML(res3)
title = ele3.xpath('//[@id="cb_post_title_url"]/text()')[0]
body = etree.tostring(ele3.xpath('//[@id="cnblogs_post_body"]')[0], encoding='utf-8').decode('utf-8')
body = body[:10]
#mysql 插入语句（将title和boby插入cnblogs表中）
sql = 'insert into cnblogs value (%s,%s)'
parm = (title, body)
#execute（sql，args）args通常是list或tuple格式，若是只有一个参数，可直接传入 execute方法中sql语句占位符是%s
cursor.execute(sql, parm)
#提交数据 conn.commit()
conn.commit()

next_page = ele2.xpath("//*[@id='pager']/a|//*[@id='nav_next_page']/a/@href")
    if next_page:
        url = next_page[0]
    else:
        break
break

代码二：爬取菜鸟教程python100例子储存于mysql数据库
from lxml import etree
import requests#导入请求库

import pymysql
conn = pymysql.connect(host='localhost', user='root', password='admin',
db='spider', charset='utf8')

获取游标(指定获取的数据格式，这里设定返回dict格式)

cursor = conn.cursor()

菜鸟教程python100例url

recommed_url='https://www.runoob.com/python3/python3-examples.html'

利用requests的get()方法请求url 并利用decode（）方法以'utf-8'解码

res=requests.get(url=recommed_url).content.decode('utf-8')

利用etree库解析返回的HTML页面

ele=etree.HTML(res)

利用Xpath()提取详情页的URl

elements=ele.xpath('//*[@id="content"]/ul/li/a/@href')

利用列表存储全部的URL

url_list=['https://www.runoob.com/python3/'+ele for ele in elements]
url = url_list

print()输出语句查看解析的详情页url

print(url_list)

for url in url_list:
print(url)
res2 = requests.get(url).content.decode('utf-8')
ele2=etree.HTML(res2)
title = ele2.xpath('//[@id="content"]/h1/text()')[0]
body = ele2.xpath('//[@id="content"]/p[2]/text()')[0]

# mysql 插入语句（将title和boby插入cnblogs表中）
sql = 'insert into cainiao value (%s,%s)'
parm = (title, body)
# execute（sql，args）args通常是list或tuple格式，若是只有一个参数，可直接传入  execute方法中sql语句占位符是%s
cursor.execute(sql, parm)
# 提交数据 conn.commit()
conn.commit()

 
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原文连接：https://blog.csdn.net/qq_42633222/article/details/102632754代码一：（爬取博客园储存于mysql数据库）
from lxml import etree
import requests
import pandas as pd

创建mysql数据库链接

import pymysql
conn = pymysql.connect(host='localhost', user='root', password='admin',
db='spider', charset='utf8')

获取游标(指定获取的数据格式，这里设定返回dict格式)

cursor = conn.cursor()

爬取URL

recommed_url = 'https://www.cnblogs.com/aggsite/UserStats'
res = requests.get(url=recommed_url).content.decode('utf-8')

ele = etree.HTML(res)
elements = ele.xpath("//[@id='blogger_list']//a/@href")
url_list = ['http:' + ele for ele in elements][:-2]
for url in url_list:
while True:
print(url)
res2 = requests.get(url).content.decode('utf-8')
ele2 = etree.HTML(res2)
word_urls = ele2.xpath('//[@id="mainContent"]/div/div/div[2]/a/@href')
for wordUrl in word_urls:
res3 = requests.get(wordUrl).content.decode('utf-8')
ele3 = etree.HTML(res3)
title = ele3.xpath('//[@id="cb_post_title_url"]/text()')[0]
body = etree.tostring(ele3.xpath('//[@id="cnblogs_post_body"]')[0], encoding='utf-8').decode('utf-8')
body = body[:10]
#mysql 插入语句（将title和boby插入cnblogs表中）
sql = 'insert into cnblogs value (%s,%s)'
parm = (title, body)
#execute（sql，args）args通常是list或tuple格式，若是只有一个参数，可直接传入 execute方法中sql语句占位符是%s
cursor.execute(sql, parm)
#提交数据 conn.commit()
conn.commit()

next_page = ele2.xpath("//*[@id='pager']/a|//*[@id='nav_next_page']/a/@href")
    if next_page:
        url = next_page[0]
    else:
        break
break

代码二：爬取菜鸟教程python100例子储存于mysql数据库
from lxml import etree
import requests#导入请求库

import pymysql
conn = pymysql.connect(host='localhost', user='root', password='admin',
db='spider', charset='utf8')

获取游标(指定获取的数据格式，这里设定返回dict格式)

cursor = conn.cursor()

菜鸟教程python100例url

recommed_url='https://www.runoob.com/python3/python3-examples.html'

利用requests的get()方法请求url 并利用decode（）方法以'utf-8'解码

res=requests.get(url=recommed_url).content.decode('utf-8')

利用etree库解析返回的HTML页面

ele=etree.HTML(res)

利用Xpath()提取详情页的URl

elements=ele.xpath('//*[@id="content"]/ul/li/a/@href')

利用列表存储全部的URL

url_list=['https://www.runoob.com/python3/'+ele for ele in elements]
url = url_list

print()输出语句查看解析的详情页url

print(url_list)

for url in url_list:
print(url)
res2 = requests.get(url).content.decode('utf-8')
ele2=etree.HTML(res2)
title = ele2.xpath('//[@id="content"]/h1/text()')[0]
body = ele2.xpath('//[@id="content"]/p[2]/text()')[0]

# mysql 插入语句（将title和boby插入cnblogs表中）
sql = 'insert into cainiao value (%s,%s)'
parm = (title, body)
# execute（sql，args）args通常是list或tuple格式，若是只有一个参数，可直接传入  execute方法中sql语句占位符是%s
cursor.execute(sql, parm)
# 提交数据 conn.commit()
conn.commit()