我是网络爬虫的新手，我的爬虫代码不起作用，也没有任何提示！我想抓取该网站（http://quotes.toscrape.com），然后将数据保存到MySQL数据库中。因此，我设计了一个基本的Spider：
import scrapy
from ..items import QuotetutorialItem
class QuoteSpider(scrapy.Spider) :
name = 'quotes'
start_urls = [
'http://quotes.toscrape.com/'
]
def parse(self, response) :
items = QuotetutorialItem()
all_div_quotes = response.css('div.quote')
for quotes in all_div_quotes:
title = quotes.css('span.text::text').extract()
author = quotes.css('.author::text').extract()
tag = quotes.css('.tag::text').extract()
items['title'] = title
items['author'] = author
items['tag'] = tag
yield items
这是我的'pipelines.py'代码：
# -*- coding: utf-8 -*-
# Define your item pipelines here
#
# Don't forget to add your pipeline to the ITEM_PIPELINES setting
# See: https://doc.scrapy.org/en/latest/topics/item-pipeline.html
# Scraping data - > Item Containers - > Json/csv files
# Scraping data - > Item Containers - > Pipeline - > SQL/Mongo database
import mysql.connector
class QuotetutorialPipeline(object):
def __int__(self):
self.create_connection()
self.create_table()
def create_connection(self):
self.conn = mysql.connector.connect(
host = 'localhost',
user = 'root',
passwd = 'jozefleonel',
database = 'myquotes'
)
self.curr = self.conn.cursor()
def create_table(self):
self.curr.execute("""DROP TABLE IF EXISTS quotes_tb""")
self.curr.execute("""create table quotes_tb(
title text,
author text,
tag text
)""")
def process_item(self, item, spider):
self.store_db(item)
return item
def store_db(self,item):
self.curr.execute("""insert into quotes_tb values (%s,%s,%s)""", (
item['title'][0],
item['author'][0],
item['tag'][0]
))
self.conn.commit()
您在回复中找到错误消息 谢谢^^
答案 0 :(得分：0)
在您要处理的流程项目中
self.store_db（item）
store_db试图使用数据库对象 curr 。而且它在管道的任何地方都没有定义。
我想这就是你应该做的
class QuotetutorialPipeline(object):
def __init__(self):
self.curr,self.conn = self.create_connection()
self.curr = self.create_table(self.curr)
def create_connection(self):
conn = mysql.connector.connect(
host = 'localhost',
user = 'root',
passwd = 'jozefleonel',
database = 'myquotes'
)
return conn.cursor(),conn
def create_table(self,curr):
curr.execute("""DROP TABLE IF EXISTS quotes_tb""")
curr.execute("""create table quotes_tb(
title text,
author text,
tag text
)""")
return curr
def process_item(self, item, spider):
self.store_db(item)
return item
def store_db(self,item):
self.curr.execute("""insert into quotes_tb values (%s,%s,%s)""", (
item['title'][0],
item['author'][0],
item['tag'][0]
))
self.conn.commit()
我们将从create_connection返回游标和连接对象，并从create_table返回游标对象。
我们现在可以在store_db上使用它。
答案 1 :(得分：0)
所有消息错误：
(ScrapyTutorial) D:\ScrapyTutorial\quotetutorial>scrapy crawl quotes
2019-06-21 14:43:36 [scrapy.utils.log] INFO: Scrapy 1.6.0 started (bot: quotetut
orial)
2019-06-21 14:43:36 [scrapy.utils.log] INFO: Versions: lxml 4.3.4.0, libxml2 2.9
.5, cssselect 1.0.3, parsel 1.5.1, w3lib 1.20.0, Twisted 19.2.1, Python 3.6.6 (v
3.6.6:4cf1f54eb7, Jun 27 2018, 03:37:03) [MSC v.1900 64 bit (AMD64)], pyOpenSSL
19.0.0 (OpenSSL 1.1.1c 28 May 2019), cryptography 2.7, Platform Windows-8.1-6.3
.9600-SP0
2019-06-21 14:43:36 [scrapy.crawler] INFO: Overridden settings: {'BOT_NAME': 'qu
otetutorial', 'NEWSPIDER_MODULE': 'quotetutorial.spiders', 'ROBOTSTXT_OBEY': Tru
e, 'SPIDER_MODULES': ['quotetutorial.spiders']}
2019-06-21 14:43:37 [scrapy.extensions.telnet] INFO: Telnet Password: e7bf79ce64
7de417
2019-06-21 14:43:37 [scrapy.middleware] INFO: Enabled extensions:
['scrapy.extensions.corestats.CoreStats',
'scrapy.extensions.telnet.TelnetConsole',
'scrapy.extensions.logstats.LogStats']
2019-06-21 14:43:45 [scrapy.middleware] INFO: Enabled downloader middlewares:
['scrapy.downloadermiddlewares.robotstxt.RobotsTxtMiddleware',
'scrapy.downloadermiddlewares.httpauth.HttpAuthMiddleware',
'scrapy.downloadermiddlewares.downloadtimeout.DownloadTimeoutMiddleware',
'scrapy.downloadermiddlewares.defaultheaders.DefaultHeadersMiddleware',
'scrapy.downloadermiddlewares.useragent.UserAgentMiddleware',
'scrapy.downloadermiddlewares.retry.RetryMiddleware',
'scrapy.downloadermiddlewares.redirect.MetaRefreshMiddleware',
'scrapy.downloadermiddlewares.httpcompression.HttpCompressionMiddleware',
'scrapy.downloadermiddlewares.redirect.RedirectMiddleware',
'scrapy.downloadermiddlewares.cookies.CookiesMiddleware',
'scrapy.downloadermiddlewares.httpproxy.HttpProxyMiddleware',
'scrapy.downloadermiddlewares.stats.DownloaderStats']
2019-06-21 14:43:45 [scrapy.middleware] INFO: Enabled spider middlewares:
['scrapy.spidermiddlewares.httperror.HttpErrorMiddleware',
'scrapy.spidermiddlewares.offsite.OffsiteMiddleware',
'scrapy.spidermiddlewares.referer.RefererMiddleware',
'scrapy.spidermiddlewares.urllength.UrlLengthMiddleware',
'scrapy.spidermiddlewares.depth.DepthMiddleware']
2019-06-21 14:43:48 [scrapy.middleware] INFO: Enabled item pipelines:
['quotetutorial.pipelines.QuotetutorialPipeline']
2019-06-21 14:43:48 [scrapy.core.engine] INFO: Spider opened
2019-06-21 14:43:48 [scrapy.extensions.logstats] INFO: Crawled 0 pages (at 0 pag
es/min), scraped 0 items (at 0 items/min)
2019-06-21 14:43:48 [scrapy.extensions.telnet] INFO: Telnet console listening on
127.0.0.1:6023
2019-06-21 14:43:49 [scrapy.core.engine] DEBUG: Crawled (404) <GET http://quotes
.toscrape.com/robots.txt> (referer: None)
2019-06-21 14:43:49 [scrapy.core.engine] DEBUG: Crawled (200) <GET http://quotes
.toscrape.com/> (referer: None)
2019-06-21 14:43:50 [scrapy.core.scraper] ERROR: Error processing {'author': ['A
lbert Einstein'],
'tag': ['change', 'deep-thoughts', 'thinking', 'world'],
'title': ['"The world as we have created it is a process of our thinking. It '
'cannot be changed without changing our thinking."']}
Traceback (most recent call last):
File "d:\scrapytutorial\lib\site-packages\twisted\internet\defer.py", line 654
, in _runCallbacks
current.result = callback(current.result, *args, **kw)
File "D:\ScrapyTutorial\quotetutorial\quotetutorial\pipelines.py", line 39, in
process_item
self.store_db(item)
File "D:\ScrapyTutorial\quotetutorial\quotetutorial\pipelines.py", line 43, in
store_db
self.curr.execute("""insert into quotes_tb values (%s,%s,%s)""", (
AttributeError: 'QuotetutorialPipeline' object has no attribute 'curr'
2019-06-21 14:43:50 [scrapy.core.scraper] ERROR: Error processing {'author': ['J
.K. Rowling'],
'tag': ['abilities', 'choices'],
'title': ['"It is our choices, Harry, that show what we truly are, far more '
'than our abilities."']}
Traceback (most recent call last):
File "d:\scrapytutorial\lib\site-packages\twisted\internet\defer.py", line 654
, in _runCallbacks
current.result = callback(current.result, *args, **kw)
File "D:\ScrapyTutorial\quotetutorial\quotetutorial\pipelines.py", line 39, in
process_item
self.store_db(item)
File "D:\ScrapyTutorial\quotetutorial\quotetutorial\pipelines.py", line 43, in
store_db
self.curr.execute("""insert into quotes_tb values (%s,%s,%s)""", (
AttributeError: 'QuotetutorialPipeline' object has no attribute 'curr'
2019-06-21 14:43:50 [scrapy.core.scraper] ERROR: Error processing {'author': ['A
lbert Einstein'],
'tag': ['inspirational', 'life', 'live', 'miracle', 'miracles'],
'title': ['"There are only two ways to live your life. One is as though '
'nothing is a miracle. The other is as though everything is a '
'miracle."']}
Traceback (most recent call last):
File "d:\scrapytutorial\lib\site-packages\twisted\internet\defer.py", line 654
, in _runCallbacks
current.result = callback(current.result, *args, **kw)
File "D:\ScrapyTutorial\quotetutorial\quotetutorial\pipelines.py", line 39, in
process_item
self.store_db(item)
File "D:\ScrapyTutorial\quotetutorial\quotetutorial\pipelines.py", line 43, in
store_db
self.curr.execute("""insert into quotes_tb values (%s,%s,%s)""", (
AttributeError: 'QuotetutorialPipeline' object has no attribute 'curr'
2019-06-21 14:43:50 [scrapy.core.scraper] ERROR: Error processing {'author': ['J
ane Austen'],
'tag': ['aliteracy', 'books', 'classic', 'humor'],
'title': ['"The person, be it gentleman or lady, who has not pleasure in a '
'good novel, must be intolerably stupid."']}
Traceback (most recent call last):
File "d:\scrapytutorial\lib\site-packages\twisted\internet\defer.py", line 654
, in _runCallbacks
current.result = callback(current.result, *args, **kw)
File "D:\ScrapyTutorial\quotetutorial\quotetutorial\pipelines.py", line 39, in
process_item
self.store_db(item)
File "D:\ScrapyTutorial\quotetutorial\quotetutorial\pipelines.py", line 43, in
store_db
self.curr.execute("""insert into quotes_tb values (%s,%s,%s)""", (
AttributeError: 'QuotetutorialPipeline' object has no attribute 'curr'
2019-06-21 14:43:50 [scrapy.core.scraper] ERROR: Error processing {'author': ['M
arilyn Monroe'],
'tag': ['be-yourself', 'inspirational'],
'title': [""Imperfection is beauty, madness is genius and it's better to be "
'absolutely ridiculous than absolutely boring."']}
Traceback (most recent call last):
File "d:\scrapytutorial\lib\site-packages\twisted\internet\defer.py", line 654
, in _runCallbacks
current.result = callback(current.result, *args, **kw)
File "D:\ScrapyTutorial\quotetutorial\quotetutorial\pipelines.py", line 39, in
process_item
self.store_db(item)
File "D:\ScrapyTutorial\quotetutorial\quotetutorial\pipelines.py", line 43, in
store_db
self.curr.execute("""insert into quotes_tb values (%s,%s,%s)""", (
AttributeError: 'QuotetutorialPipeline' object has no attribute 'curr'
2019-06-21 14:43:50 [scrapy.core.scraper] ERROR: Error processing {'author': ['A
lbert Einstein'],
'tag': ['adulthood', 'success', 'value'],
'title': ['"Try not to become a man of success. Rather become a man of '
'value."']}
Traceback (most recent call last):
File "d:\scrapytutorial\lib\site-packages\twisted\internet\defer.py", line 654
, in _runCallbacks
current.result = callback(current.result, *args, **kw)
File "D:\ScrapyTutorial\quotetutorial\quotetutorial\pipelines.py", line 39, in
process_item
self.store_db(item)
File "D:\ScrapyTutorial\quotetutorial\quotetutorial\pipelines.py", line 43, in
store_db
self.curr.execute("""insert into quotes_tb values (%s,%s,%s)""", (
AttributeError: 'QuotetutorialPipeline' object has no attribute 'curr'
2019-06-21 14:43:50 [scrapy.core.scraper] ERROR: Error processing {'author': ['A
ndré Gide'],
'tag': ['life', 'love'],
'title': ['"It is better to be hated for what you are than to be loved for '
'what you are not."']}
Traceback (most recent call last):
File "d:\scrapytutorial\lib\site-packages\twisted\internet\defer.py", line 654
, in _runCallbacks
current.result = callback(current.result, *args, **kw)
File "D:\ScrapyTutorial\quotetutorial\quotetutorial\pipelines.py", line 39, in
process_item
self.store_db(item)
File "D:\ScrapyTutorial\quotetutorial\quotetutorial\pipelines.py", line 43, in
store_db
self.curr.execute("""insert into quotes_tb values (%s,%s,%s)""", (
AttributeError: 'QuotetutorialPipeline' object has no attribute 'curr'
2019-06-21 14:43:50 [scrapy.core.scraper] ERROR: Error processing {'author': ['T
homas A. Edison'],
'tag': ['edison', 'failure', 'inspirational', 'paraphrased'],
'title': [""I have not failed. I've just found 10,000 ways that won't work.""]}
Traceback (most recent call last):
File "d:\scrapytutorial\lib\site-packages\twisted\internet\defer.py", line 654
, in _runCallbacks
current.result = callback(current.result, *args, **kw)
File "D:\ScrapyTutorial\quotetutorial\quotetutorial\pipelines.py", line 39, in
process_item
self.store_db(item)
File "D:\ScrapyTutorial\quotetutorial\quotetutorial\pipelines.py", line 43, in
store_db
self.curr.execute("""insert into quotes_tb values (%s,%s,%s)""", (
AttributeError: 'QuotetutorialPipeline' object has no attribute 'curr'
2019-06-21 14:43:50 [scrapy.core.scraper] ERROR: Error processing {'author': ['E
leanor Roosevelt'],
'tag': ['misattributed-eleanor-roosevelt'],
'title': ['"A woman is like a tea bag; you never know how strong it is until '
"it's in hot water.""]}
Traceback (most recent call last):
File "d:\scrapytutorial\lib\site-packages\twisted\internet\defer.py", line 654
, in _runCallbacks
current.result = callback(current.result, *args, **kw)
File "D:\ScrapyTutorial\quotetutorial\quotetutorial\pipelines.py", line 39, in
process_item
self.store_db(item)
File "D:\ScrapyTutorial\quotetutorial\quotetutorial\pipelines.py", line 43, in
store_db
self.curr.execute("""insert into quotes_tb values (%s,%s,%s)""", (
AttributeError: 'QuotetutorialPipeline' object has no attribute 'curr'
2019-06-21 14:43:50 [scrapy.core.scraper] ERROR: Error processing {'author': ['S
teve Martin'],
'tag': ['humor', 'obvious', 'simile'],
'title': ['"A day without sunshine is like, you know, night."']}
Traceback (most recent call last):
File "d:\scrapytutorial\lib\site-packages\twisted\internet\defer.py", line 654
, in _runCallbacks
current.result = callback(current.result, *args, **kw)
File "D:\ScrapyTutorial\quotetutorial\quotetutorial\pipelines.py", line 39, in
process_item
self.store_db(item)
File "D:\ScrapyTutorial\quotetutorial\quotetutorial\pipelines.py", line 43, in
store_db
self.curr.execute("""insert into quotes_tb values (%s,%s,%s)""", (
AttributeError: 'QuotetutorialPipeline' object has no attribute 'curr'
2019-06-21 14:43:50 [scrapy.core.engine] INFO: Closing spider (finished)
2019-06-21 14:43:50 [scrapy.statscollectors] INFO: Dumping Scrapy stats:
{'downloader/request_bytes': 446,
'downloader/request_count': 2,
'downloader/request_method_count/GET': 2,
'downloader/response_bytes': 2701,
'downloader/response_count': 2,
'downloader/response_status_count/200': 1,
'downloader/response_status_count/404': 1,
'finish_reason': 'finished',
'finish_time': datetime.datetime(2019, 6, 21, 12, 43, 50, 376034),
'log_count/DEBUG': 2,
'log_count/ERROR': 10,
'log_count/INFO': 9,
'response_received_count': 2,
'robotstxt/request_count': 1,
'robotstxt/response_count': 1,
'robotstxt/response_status_count/404': 1,
'scheduler/dequeued': 1,
'scheduler/dequeued/memory': 1,
'scheduler/enqueued': 1,
'scheduler/enqueued/memory': 1,
'start_time': datetime.datetime(2019, 6, 21, 12, 43, 48, 610377)}
2019-06-21 14:43:50 [scrapy.core.engine] INFO: Spider closed (finished)
答案 2 :(得分：0)
我创建了解决方案x） 它是 init 而不是 int ，我忘记了'i'x））