#spider/first

# -*- coding: utf-8 -*-
import scrapy
from selenium import webdriver
from xinwen.items import XinwenItem

#百度ai部分
from aip import AipNlp
APP_ID = ‘‘
API_KEY = ‘‘
SECRET_KEY = ‘‘
client = AipNlp(APP_ID, API_KEY, SECRET_KEY)

class FirstSpider(scrapy.Spider):
    name = ‘first‘

    start_urls = [‘https://news.163.com/‘]
    bro = webdriver.Chrome(executable_path=r‘C:\Users\Administrator.DESKTOP-9DN4SRE\Downloads\Compressed\chromedriver_win32\chromedriver.exe‘)
    model_urls = []

    def parse(self, response):
        li_list = response.xpath(‘//*[@id="index2016_wrap"]/div[1]/div[2]/div[2]/div[2]/div[2]/div/ul/li‘)
        # index = [3,4,6,7,8]
        index = [3]
        for i in index:
            model_url=li_list[i].xpath(‘./a/@href‘).extract_first()
            self.model_urls.append(model_url)
        for url in self.model_urls:
            yield scrapy.Request(url=url,callback=self.parse_mode)

    def parse_mode(self,response):

        div_list = response.xpath(‘/html/body/div/div[3]/div[4]/div[1]/div/div/ul/li/div/div‘)
        for div in div_list:
            print(div)
            title = div.xpath(‘./a/img/@alt‘).extract_first()
            div_url = div.xpath(‘./a/@href‘).extract_first()
            if div_url:
                item = XinwenItem()
                item[‘title‘] = title
                yield scrapy.Request(url=div_url,callback = self.content_new_mode,meta={‘item‘:item})


    def content_new_mode(self,response):
        item = response.meta[‘item‘]
        #//*[@id="endText"]/p
        content = response.xpath(‘//*[@id="endText"]/p/text()‘).extract()
        content = ‘‘.join(content)
        item[‘content‘] = content.replace(u‘\xa0‘, u‘‘)

        all_tags = "标签:"
        tagss = client.keyword(item[‘title‘],item[‘content‘])
        #tagss = tagss  #字典
        add_tags = tagss[‘items‘]
        for i in add_tags:
            all_tags = all_tags + i[‘tag‘] +"  "

        item[‘tags‘] = all_tags
        yield item

    # def baidutags(self,response):


    def closed(self, spider):
        self.bro.quit()

# -*- coding: utf-8 -*-

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

import scrapy


class XinwenItem(scrapy.Item):
    # define the fields for your item here like:
    title = scrapy.Field()
    content = scrapy.Field()
    tags = scrapy.Field()
    #pass

# -*- coding: utf-8 -*-

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

from scrapy import signals

from scrapy.http import HtmlResponse

from time import sleep



class XinwenDownloaderMiddleware(object):
    # Not all methods need to be defined. If a method is not defined,
    # scrapy acts as if the downloader middleware does not modify the
    # passed objects.



    def process_request(self, request, spider):

        return None

    def process_response(self, request, response, spider):
        model_urls = spider.model_urls
        bro = spider.bro
        if request.url in model_urls:
            bro.get(request.url)
            sleep(1)
            page_text = bro.page_source
            return HtmlResponse(url=request.url,body=page_text,encoding=‘utf-8‘,request=request)
        else:
            return response


    def process_exception(self, request, exception, spider):
        # Called when a download handler or a process_request()
        # (from other downloader middleware) raises an exception.

        # Must either:
        # - return None: continue processing this exception
        # - return a Response object: stops process_exception() chain
        # - return a Request object: stops process_exception() chain
        pass

# -*- coding: utf-8 -*-

# Define your item pipelines here
#
# Don‘t forget to add your pipeline to the ITEM_PIPELINES setting
# See: https://docs.scrapy.org/en/latest/topics/item-pipeline.html

import pymysql

class XinwenPipeline(object):
    all_data=[]

    def process_item(self, item, spider):

        self.all_data.append(item)
        # all_tags = ""
        # tagss = client.keyword(item[‘title‘], item[‘content‘])
        # add_tags = tagss[‘items‘]
        # for i in add_tags:
        #     all_tags = all_tags + i[‘tag‘] + " "
        #
        # print(all_tags)
        print(item[‘tags‘])
        return item

    def close_spider(self,spider):
        print(len(self.all_data))


#数据存储到mysql
class MysqlPileLine(object):
    conn = None
    cursor = None
    def open_spider(self,spider):
        self.conn = pymysql.Connect(host=‘127.0.0.1‘,port=3306,user=‘root‘,password=‘mima‘,db=‘wangyi‘,charset=‘utf8‘)
    def process_item(self, item, spider):
        title = item[‘title‘]
        content = item[‘content‘]
        tags = item[‘tags‘]
        self.cursor = self.conn.cursor()
        sql = ‘insert into wangyi values ("%s","%s","%s")‘%(title,content,tags)
        try:
            self.cursor.execute(sql)
            self.conn.commit()
        except Exception as e:
            print(e)
            self.conn.rollback()
        return item
    def close_spider(self,spider):
        self.cursor.close()
        self.conn.close()

# -*- coding: utf-8 -*-

# Scrapy settings for xinwen project
#
# For simplicity, this file contains only settings considered important or
# commonly used. You can find more settings consulting the documentation:
#
#     https://docs.scrapy.org/en/latest/topics/settings.html
#     https://docs.scrapy.org/en/latest/topics/downloader-middleware.html
#     https://docs.scrapy.org/en/latest/topics/spider-middleware.html

BOT_NAME = ‘xinwen‘
USER_AGENT = ‘Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.88 Safari/537.36‘

SPIDER_MODULES = [‘xinwen.spiders‘]
NEWSPIDER_MODULE = ‘xinwen.spiders‘


# Crawl responsibly by identifying yourself (and your website) on the user-agent
#USER_AGENT = ‘xinwen (+http://www.yourdomain.com)‘

# Obey robots.txt rules
ROBOTSTXT_OBEY = False
LOG_LEVEL =‘ERROR‘

# Configure maximum concurrent requests performed by Scrapy (default: 16)
#CONCURRENT_REQUESTS = 32

# Configure a delay for requests for the same website (default: 0)
# See https://docs.scrapy.org/en/latest/topics/settings.html#download-delay
# See also autothrottle settings and docs
#DOWNLOAD_DELAY = 3
# The download delay setting will honor only one of:
#CONCURRENT_REQUESTS_PER_DOMAIN = 16
#CONCURRENT_REQUESTS_PER_IP = 16

# Disable cookies (enabled by default)
#COOKIES_ENABLED = False

# Disable Telnet Console (enabled by default)
#TELNETCONSOLE_ENABLED = False

# Override the default request headers:
#DEFAULT_REQUEST_HEADERS = {
#   ‘Accept‘: ‘text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8‘,
#   ‘Accept-Language‘: ‘en‘,
#}

# Enable or disable spider middlewares
# See https://docs.scrapy.org/en/latest/topics/spider-middleware.html
#SPIDER_MIDDLEWARES = {
#    ‘xinwen.middlewares.XinwenSpiderMiddleware‘: 543,
#}

# Enable or disable downloader middlewares
# See https://docs.scrapy.org/en/latest/topics/downloader-middleware.html
DOWNLOADER_MIDDLEWARES = {
   ‘xinwen.middlewares.XinwenDownloaderMiddleware‘: 543,
}

# Enable or disable extensions
# See https://docs.scrapy.org/en/latest/topics/extensions.html
#EXTENSIONS = {
#    ‘scrapy.extensions.telnet.TelnetConsole‘: None,
#}

# Configure item pipelines
# See https://docs.scrapy.org/en/latest/topics/item-pipeline.html
ITEM_PIPELINES = {
   ‘xinwen.pipelines.XinwenPipeline‘: 300,
   ‘xinwen.pipelines.MysqlPileLine‘: 301,
   #‘xinwen.pipelines.BaiduAiPipeline‘:301,
}

# Enable and configure the AutoThrottle extension (disabled by default)
# See https://docs.scrapy.org/en/latest/topics/autothrottle.html
#AUTOTHROTTLE_ENABLED = True
# The initial download delay
#AUTOTHROTTLE_START_DELAY = 5
# The maximum download delay to be set in case of high latencies
#AUTOTHROTTLE_MAX_DELAY = 60
# The average number of requests Scrapy should be sending in parallel to
# each remote server
#AUTOTHROTTLE_TARGET_CONCURRENCY = 1.0
# Enable showing throttling stats for every response received:
#AUTOTHROTTLE_DEBUG = False

# Enable and configure HTTP caching (disabled by default)
# See https://docs.scrapy.org/en/latest/topics/downloader-middleware.html#httpcache-middleware-settings
#HTTPCACHE_ENABLED = True
#HTTPCACHE_EXPIRATION_SECS = 0
#HTTPCACHE_DIR = ‘httpcache‘
#HTTPCACHE_IGNORE_HTTP_CODES = []
#HTTPCACHE_STORAGE = ‘scrapy.extensions.httpcache.FilesystemCacheStorage‘