Python3.x：访问带参数链接并且获取返回json串

示例一：

import json

import xml.dom.minidom

from urllib import request, parse

from sqlalchemy import func

url = "http://**********/queryTradingByProdTypeData.do"

headerDict = {'Host': 'query.sse.com.cn',

              'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:54.0) Gecko/20100101 Firefox/54.0',

              'Accept': '*/*', 'Accept-Language': 'zh-CN,zh;q=0.8,en-US;q=0.5,en;q=0.3',

              'Accept-Encoding': 'gzip, deflate',

              'Referer': 'http://**************/funddata/overview/day/',

              'Connection': 'keep-alive'}

jsonName = 'jsonpCallback24028'

data = {'jsonCallBack': jsonName, 'searchDate': dataDate, 'prodType': 'jj'}

params = parse.urlencode(data).encode('utf-8')

req = request.Request(url, headers=headerDict)

page = str(request.urlopen(req, data=params).read(), encoding="utf-8")

rdata = page[len(jsonName) + 1:len(page) - 1]

jsondata = json.loads(rdata)

print("json>>:%s" %jsondata)

示例二：

# 获取主要指标概览表

def getChannelIdStr(channelFidStr):

    url = "http://www.*****/getSubChannel.action"

    headerDict = {'Host': 'www.*****.cn',

                  'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.31 Safari/537.36',

                  'Accept': 'application/json, text/javascript, */*; q=0.01',

                  'Accept-Language': 'zh-CN,zh;q=0.8',

                  'Accept-Encoding': 'gzip, deflate',

                  'Referer': 'http://www.******/monthview.action?action=china',

                  'Connection': 'keep-alive'}

    data = {'channelFidStr': channelFidStr}

    # psot 传递参数

    res = requests.post(url, data=data, headers=headerDict)

    # 获取跳转后的页面源码，返回json串

    soup = BeautifulSoup(res.content, "html.parser")

    print(soup)

    # 转换json格式

    jsonArr = json.loads(soup.text)

    # 遍历json数组

    channelId = []

    for jsonStr in jsonArr:

        channelId.append(jsonStr['channelId'])

        print(jsonStr['channelName'])

    return channelId