多线程之小米商店APP爬虫

#今日目标

**多线程之小米商店APP爬虫**

爬取小米商店所有社交APP

```
import requests
import time
from threading import Thread
from queue import Queue
import json

class XiaoAppSpider(object):
    def __init__(self):
        self.url=‘http://app.mi.com/categotyAllListApi?page={}&categoryId=2&pageSize=30‘
        self.headers={‘User-Agent‘: ‘Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.131 Safari/537.36X-Requested-With: XMLHttpRequest‘}
        self.url_queue=Queue()
        self.n=0
    #url队列
    def url_in(self):
        for i in range(67):
            url=self.url.format(i)
            #入队列
            self.url_queue.put(url)
    #线程事件函数
    def get_data(self):
        while True:
            if self.url_queue.empty():
                break
            #get地址,请求+解析+保存
            url=self.url_queue.get()
            html=requests.get(url=url,headers=self.headers).content.decode(‘utf-8‘)
            html=json.loads(html)
            #with open(‘xiao.json‘,‘a‘) as f:
                #app_dict={}
            for app in html[‘data‘]:
                app_name=app[‘displayName‘]
                app_link=‘http://app.mi.com/details?‘+app[‘packageName‘]
                print(app_name,app_link)
                self.n +=1
#主函数
    def main(self):
        #url入队列
        self.url_in()
        #创建多线程
        t_list=[]
        for i in range (5):
            t=Thread(target=self.get_data)
            t_list.append(t)
            t.start()
        for i in t_list:
            i.join()
            print(‘应用数量:‘,self.n)



if __name__ == ‘__main__‘:
    start=time.time()
    spider=XiaoAppSpider()
    spider.main()
    end=time.time()
    print(‘执行时间为{}‘.format(end-start))


```