Python把json格式的string對象轉變成dict對象操做、Python3不能使用urllib二、urllib.parse.urlencode(params).encode(encoding=

son格式的string對象轉變成dict對象操做

• content=eval(content)#json字典轉化

Python3不能使用urllib2

• 直接使用urllib.request替換urllib2就能夠了

host = 'https://aip.baidubce.com/oauth/2.0/token?grant_type=client_credentials&client_id=PTi4WZjaMjXgrxqaH7OVOG1c&client_secret=8fpp9Hw9wMKGrtGIitNox8vDfFZKMNNA'
    request = urllib2.Request(host)    #python3執行會報錯
    request = urllib.request.Request(host)#替換urllib2

    request.add_header('Content-Type', 'application/json; charset=UTF-8')
    response = urllib.request.urlopen(request)
    content = response.read()
    content=content.decode("utf-8")#把返回的二進制轉爲str
    content=eval(content)#json字典轉化
    print (type(content))
    print(content)
    access_token= content['access_token']
    print(access_token)

params = urllib.parse.urlencode(params).encode(encoding='UTF8')要先對參數進行utf-8的編碼以後，才能進行url編碼，不然編碼的結果不一樣