一、需求說明
當我們使用requests庫編寫爬蟲時，往往需要抓包分析其中的POST請求參數，然後再將其轉爲DICT類型。當我看到參數是這樣時：
dopost=login&userid=admin&pwd=admin
我心中不由笑開了花：這麼簡單，何必如此大費周章？對應的DICT不就是這樣麼：
{
'dopost':'login',
'userid':'admin',
'pwd':'admin'
}
小明同學，專制各種不服！！！這位囂張的同學，請聽題：
orderType=-1&receUserInfo={"receUserName":"xxx","receUserCardCode":"xxxxxxxxxxxxxxxxxx","receUserCardCodeType":"1","receUserContact":"xxxxxxxxxxx"}&orderInfo=[{"supplierId":"3601","stationMapId":"7301908","endId":"10720428","endTypeId":"1","planId":"2020-04-07%2C07%3A50%2CX0518%2C430923019%2C430103","planDate":"2020-04-07","driveTime":"07:50","arMoney":86,"orderModelId":"1","goBackFlag":"1","orderCount":1,"ticketOrderMoneyInfo":{"orderMoney":76,"feeMoney":4,"yhqVo":{"yhqId":"","yhqMoney":""},"actionInfo":{"reduceActionCode":"","reduceMoney":0}},"insureOrderMoneyInfo":{"orderMoney":10,"inspackInfo":{"inspackId":602,"inspackReduceMoney":2}},"ticketInfo":[{"ticketTypeId":"1","userCadeType":"1","userCardCode":"xxxxxxxxxxxxxxxxxx","userCardName":"xxx","birthday":"1996-08-24","saveUserFlag":"Y","chooseInspackFlag":"Y","premiumInfo":[],"childInfo":{},"userMobile":"xxxxxxxxxxx"}],"discountInfo":{"cbFlag":"N","cbMoney":0,"intAmount":0}}]&schInfo=[{"ticketTypeList":[{"name":"全","price":"76","id":"1"}],"seats":"48","seatAmount":"42","drvTime":"07:50","schCanSellFlag":"1"}]&t=D3EDDEAF8D7C43B9A94C722982B71ED0
emmmm…對不起，打擾了，溜了遛了。
二、我的解決方案
要是我一個一個去打出來，也許情懷是允許的，可是髮量可不答應，於是我想了個辦法：
# =============================================================================
# POST請求參數轉dict
# =============================================================================
import json
post = '' # 這裏是請求包裏的POST參數
post_list = post.split('&') # 把參數轉爲list
data = {}
for p in post_list:
try:
data[p.split('=')[0]] = json.loads(p.split('=')[1]) # 如果參數裏含有字典等
except:
data[p.split('=')[0]] = p.split('=')[1] # 如果不含
print(data)
其實就是對字符串的處理，並通過json庫來進一步處理。（因爲某些參數可能本身包含字典、列表等類型）
寫在最後
感謝各位大大的閱讀~