Python实例之抓取网易云课堂搜索数据（post方式json型数据）并保存为TXT

import requests
import json
finalstr = ‘‘               #初始化字符串               
totlePage = 0                #初始化总页数
test = 0                    #初始化数据总条数
url = ‘http://study.163.com/p/search/studycourse.json‘
headers = {‘content-type‘: ‘application/json‘}

def getData(count):         #定义一个方法，返回json型请求结果
    payload = { 
        ‘pageIndex‘:count,        #页码为变量
        ‘pageSize‘:‘50‘,
        ‘keyword‘:‘java‘,
        ‘searchTimeType‘:‘-1‘,
        ‘orderType‘:‘5‘,
        ‘priceType‘:‘-1‘
    }   
    req = requests.post(url,data=json.dumps(payload),headers=headers)
    res_json = json.loads(req.text)
    return res_json
    
final = getData(1)[‘result‘][‘list‘]        #判断是否有搜索结果
if final != None:
    totlePage = getData(1)[‘result‘][‘query‘][‘totlePageCount‘]       #获取页码总数
    for j in range(1,totlePage+1):         #页码循环
        final = getData(j)[‘result‘][‘list‘]
        for i in range(len(final)):        #每页中的数据项循环
            rt = ‘标题：‘+final[i][‘productName‘]+‘\n‘
            finalstr += rt
            rp = ‘发布者：‘+final[i][‘provider‘]+‘\n‘
            finalstr += rp
            strpri = final[i][‘discountPrice‘]
            if strpri == None:
                strpri = 0
            rn = ‘价格：‘+str(strpri)+‘\n‘
            finalstr += rn
            strcou = final[i][‘learnerCount‘]
            if strcou == None:
                strcou = 0
            rd = ‘学习人数：‘+str(strcou)+‘\n\n‘
            finalstr += rd
            print(‘当前正在读取第‘+str(j)+‘页的第‘+str(i+1)+‘条数据...‘)
            test += 1
    f = open(‘网易云课堂搜索java时的数据，共‘+str(test)+‘条.txt‘,‘w‘,1,‘UTF-8‘)    #保存数据到TXT
    f.write(finalstr)
    print(‘正在保存。。。‘)
    f.close()
    print(‘保存完毕！共‘+str(test)+‘条数据‘)
else:
    print(‘没有查询结果，请换个关键词试试！‘)