详解Python之Scrapy爬虫教程NBA球员数据存放到Mysql数据库

获取要爬取的URL

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爬虫前期工作

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用Pycharm打开项目开始写爬虫文件

字段文件items

# Define here the models for your scraped items
#
# See documentation in:
# https://docs.scrapy.org/en/latest/topics/items.html

import scrapy


class NbaprojectItem(scrapy.Item):
  # define the fields for your item here like:
  # name = scrapy.Field()
  # pass
  # 创建字段的固定格式-->scrapy.Field()
  # 英文名
  engName = scrapy.Field()
  # 中文名
  chName = scrapy.Field()
  # 身高
  height = scrapy.Field()
  # 体重
  weight = scrapy.Field()
  # 国家英文名
  contryEn = scrapy.Field()
  # 国家中文名
  contryCh = scrapy.Field()
  # NBA球龄
  experience = scrapy.Field()
  # 球衣号码
  jerseyNo = scrapy.Field()
  # 入选年
  draftYear = scrapy.Field()
  # 队伍英文名
  engTeam = scrapy.Field()
  # 队伍中文名
  chTeam = scrapy.Field()
  # 位置
  position = scrapy.Field()
  # 东南部
  displayConference = scrapy.Field()
  # 分区
  division = scrapy.Field()

爬虫文件

import scrapy
import json
from nbaProject.items import NbaprojectItem

class NbaspiderSpider(scrapy.Spider):
  name = 'nbaSpider'
  allowed_domains = ['nba.com']
  # 第一次爬取的网址,可以写多个网址
  # start_urls = ['http://nba.com/']
  start_urls = ['https://china.nba.com/static/data/league/playerlist.json']
  # 处理网址的response
  def parse(self, response):
    # 因为访问的网站返回的是json格式,首先用第三方包处理json数据
    data = json.loads(response.text)['payload']['players']
    # 以下列表用来存放不同的字段
    # 英文名
    engName = []
    # 中文名
    chName = []
    # 身高
    height = []
    # 体重
    weight = []
    # 国家英文名
    contryEn = []
    # 国家中文名
    contryCh = []
    # NBA球龄
    experience = []
    # 球衣号码
    jerseyNo = []
    # 入选年
    draftYear = []
    # 队伍英文名
    engTeam = []
    # 队伍中文名
    chTeam = []
    # 位置
    position = []
    # 东南部
    displayConference = []
    # 分区
    division = []
    # 计数
    count = 1
    for i in data:
      # 英文名
      engName.append(str(i['playerProfile']['firstNameEn'] + i['playerProfile']['lastNameEn']))
      # 中文名
      chName.append(str(i['playerProfile']['firstName'] + i['playerProfile']['lastName']))
      # 国家英文名
      contryEn.append(str(i['playerProfile']['countryEn']))
      # 国家中文
      contryCh.append(str(i['playerProfile']['country']))
      # 身高
      height.append(str(i['playerProfile']['height']))
      # 体重
      weight.append(str(i['playerProfile']['weight']))
      # NBA球龄
      experience.append(str(i['playerProfile']['experience']))
      # 球衣号码
      jerseyNo.append(str(i['playerProfile']['jerseyNo']))
      # 入选年
      draftYear.append(str(i['playerProfile']['draftYear']))
      # 队伍英文名
      engTeam.append(str(i['teamProfile']['code']))
      # 队伍中文名
      chTeam.append(str(i['teamProfile']['displayAbbr']))
      # 位置
      position.append(str(i['playerProfile']['position']))
      # 东南部
      displayConference.append(str(i['teamProfile']['displayConference']))
      # 分区
      division.append(str(i['teamProfile']['division']))

      # 创建item字段对象,用来存储信息 这里的item就是对应上面导的NbaprojectItem
      item = NbaprojectItem()
      item['engName'] = str(i['playerProfile']['firstNameEn'] + i['playerProfile']['lastNameEn'])
      item['chName'] = str(i['playerProfile']['firstName'] + i['playerProfile']['lastName'])
      item['contryEn'] = str(i['playerProfile']['countryEn'])
      item['contryCh'] = str(i['playerProfile']['country'])
      item['height'] = str(i['playerProfile']['height'])
      item['weight'] = str(i['playerProfile']['weight'])
      item['experience'] = str(i['playerProfile']['experiemon varchar(50),
              displayConference varchar(50),
              division varchar(50),
              primary key(playerId)
              )charset=utf8;
              """
    # 执行sql语句
    self.cursor.execute(createTableSql)
    self.connect.commit()
    print("完成了创建表的工作")
 #每次yield回来的字段会在这里做处理
  def process_item(self, item, spider):
   # 打印item增加观赏性
   print(item)
    # sql语句
    insert_sql = """
    insert into nbaPlayer(
    playerId, engName, 
    chName,height,
    weight,contryEn,
    contryCh,experience,
    jerseyNo,draftYear
    ,engTeam,chTeam,
    position,displayConference,
    division
    ) VALUES (null,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s)
    """
    # 执行插入数据到数据库操作
    # 参数(sql语句,用item字段里的内容替换sql语句的占位符)
    self.cursor.execute(insert_sql, (item['engName'], item['chName'], item['height'], item['weight']
                     , item['contryEn'], item['contryCh'], item['experience'], item['jerseyNo'],
                     item['draftYear'], item['engTeam'], item['chTeam'], item['position'],
                     item['displayConference'], item['division']))
    # 提交，不进行提交无法保存到数据库
    self.connect.commit()
    print("数据提交成功!")