我正在嘗試使用Scrapy爲大學項目構建一個小應用程序。 蜘蛛抓取的項目,但我的管道沒有插入數據到MySQL數據庫。爲了測試管道是否不工作或pymysl執行不工作我寫了一個測試腳本:Scrapy管道不插入到MySQL
代碼開始
#!/usr/bin/python3
import pymysql
str1 = "hey"
str2 = "there"
str3 = "little"
str4 = "script"
db = pymysql.connect("localhost","root","**********","stromtarife")
cursor = db.cursor()
cursor.execute("SELECT * FROM vattenfall")
cursor.execute("INSERT INTO vattenfall (tarif, sofortbonus, treuebonus, jahrespreis) VALUES (%s, %s, %s, %s)", (str1, str2, str3, str4))
cursor.execute("SELECT * FROM vattenfall")
data = cursor.fetchone()
print(data)
db.commit()
cursor.close()
db.close()
代碼結束
我運行之後腳本我的數據庫有一個新的記錄,所以它不是我的pymysql.connect()函數,這是破產。
我會提供我scrapy代碼:
vattenfall_form.py
# -*- coding: utf-8 -*-
import scrapy
from scrapy.crawler import CrawlerProcess
from stromtarife.items import StromtarifeItem
from scrapy.http import FormRequest
class VattenfallEasy24KemptenV1500Spider(scrapy.Spider):
name = 'vattenfall-easy24-v1500-p87435'
def start_requests(self):
return [
FormRequest(
"https://www.vattenfall.de/de/stromtarife.htm",
formdata={"place": "87435", "zipCode": "87435", "cityName": "Kempten",
"electricity_consumptionprivate": "1500", "street": "", "hno": ""},
callback=self.parse
),
]
def parse(self, response):
item = StromtarifeItem()
item['jahrespreis'] = response.xpath('/html/body/main/div[1]/div[2]/div/div[3]/div[2]/div/div[2]/form[1]/div/div[2]/table/tbody/tr[3]/td[2]/text()').extract_first()
item['treuebonus'] = response.xpath('/html/body/main/div[1]/div[2]/div/div[3]/div[2]/div/div[2]/form[1]/div/div[2]/table/tbody/tr[2]/td/strong/text()').extract_first()
item['sofortbonus'] = response.xpath('/html/body/main/div[1]/div[2]/div/div[3]/div[2]/div/div[2]/form[1]/div/div[2]/table/tbody/tr[1]/td/strong/text()').extract_first()
item['tarif'] = response.xpath('/html/body/main/div[1]/div[2]/div/div[3]/div[2]/div/div[1]/h2/span/text()').extract_first()
yield item
class VattenfallEasy24KemptenV2500Spider(scrapy.Spider):
name = 'vattenfall-easy24-v2500-p87435'
def start_requests(self):
return [
FormRequest(
"https://www.vattenfall.de/de/stromtarife.htm",
formdata={"place": "87435", "zipCode": "87435", "cityName": "Kempten",
"electricity_consumptionprivate": "2500", "street": "", "hno": ""},
callback=self.parse
),
]
def parse(self, response):
item = StromtarifeItem()
item['jahrespreis'] = response.xpath('/html/body/main/div[1]/div[2]/div/div[3]/div[2]/div/div[2]/form[1]/div/div[2]/table/tbody/tr[3]/td[2]/text()').extract_first()
item['treuebonus'] = response.xpath('/html/body/main/div[1]/div[2]/div/div[3]/div[2]/div/div[2]/form[1]/div/div[2]/table/tbody/tr[2]/td/strong/text()').extract_first()
item['sofortbonus'] = response.xpath('/html/body/main/div[1]/div[2]/div/div[3]/div[2]/div/div[2]/form[1]/div/div[2]/table/tbody/tr[1]/td/strong/text()').extract_first()
item['tarif'] = response.xpath('/html/body/main/div[1]/div[2]/div/div[3]/div[2]/div/div[1]/h2/span/text()').extract_first()
yield item
process = CrawlerProcess()
process.crawl(VattenfallEasy24KemptenV1500Spider)
process.crawl(VattenfallEasy24KemptenV2500Spider)
process.start()
pipelines.py
import pymysql
from stromtarife.items import StromtarifeItem
class StromtarifePipeline(object):
def __init__(self):
self.connection = pymysql.connect("localhost","root","**********","stromtarife")
self.cursor = self.connection.cursor()
def process_item(self, item, spider):
self.cursor.execute("INSERT INTO vattenfall (tarif, sofortbonus, treuebonus, jahrespreis) VALUES (%s, %s, %s, %s)", (item['tarif'], item['sofortbonus'], item['treuebonus'], item['jahrespreis']))
self.connection.commit()
self.cursor.close()
self.connection.close()
settings.py(我改變了只有一行)
ITEM_PIPELINES = {
'stromtarife.pipelines.StromtarifePipeline': 300,
}
那麼,什麼是錯我的代碼?我無法弄清楚,如果有人看到我錯過的東西,我會很開心。提前致謝!
謝謝你的回答。我改變了process_item()並添加了close_spider(),但我仍然沒有得到任何東西到我的數據庫中。如果我得到結果,我可以進行下一步並遵循rrschmidt的建議。我真的不知道我的代碼有什麼問題.. – tolgaIsThere
我在cursor.execute()函數中的process_item()中替換了部分: ...%s,%s)「,(item ['tarif'], item ['sofortbonus'],item ['treuebonus'],item ['jahrespreis'])) with strings: ..%s,%s)「,(」hey「,」how「,」are「 「你」)) 而且它仍然不工作.. – tolgaIsThere
我更新了以前的答案,讓我知道如果這適合你 –