Question

我正在尝试使用request.post在页面上提交表单，但所做的只是转到表单所在的页面。

http://www.gwinnettcountysheriff.com/smartwebclient/

def gwinnett_search(last, first, middle, booked):
    headers = {'Content-type': "application/json",'accept':'application/json'}
    payload = {'LastName': last, 'FirstName': first, 'MiddleName': middle, 'BeginBookDate': booked}
    print("Gwinnett County Detention Center")
    r = requests.post("http://www.gwinnettcountysheriff.com/smartwebclient/", json=payload, headers=headers)
    print(r.status_code)
    print(r.headers)
#    print(r.text)

gwinnett_search(last, first, middle, option)

当我运行代码时，它返回以下内容（以及带有我要提交POST的表单的页面）。

Gwinnett County Detention Center
200
{'Cache-Control': 'private', 'Content-Type': 'text/html; charset=utf-8', 'Content-Encoding': 'gzip', 'Vary': 'Accept-Encoding', 'Server': 'Microsoft-IIS/8.5', 'X-AspNet-Version': '4.0.30319', 'X-Powered-By': 'ASP.NET', 'Date': 'Sun, 31 Mar 2019 01:07:32 GMT', 'Content-Length': '64441'}

Process finished with exit code 0

我不确定我在做什么错。我读到有人建议通过添加以下内容进行故障排除：

print(r.json())

返回：

Traceback (most recent call last):
{'Cache-Control': 'private', 'Content-Type': 'text/html; charset=utf-8', 'Content-Encoding': 'gzip', 'Vary': 'Accept-Encoding', 'Server': 'Microsoft-IIS/8.5', 'X-AspNet-Version': '4.0.30319', 'X-Powered-By': 'ASP.NET', 'Date': 'Sun, 31 Mar 2019 01:15:57 GMT', 'Content-Length': '64434'}
  File "/home/john/PycharmProjects/inmate_search/inmate_search.py", line 58, in <module>
    gwinnett_search(last, first, middle, option, booked)
  File "/home/john/PycharmProjects/inmate_search/inmate_search.py", line 56, in gwinnett_search
    print(r.json())
  File "/home/john/PycharmProjects/inmate_search/venv/lib/python3.6/site-packages/requests/models.py", line 897, in json
    return complexjson.loads(self.text, **kwargs)
  File "/usr/lib/python3.6/json/__init__.py", line 354, in loads
    return _default_decoder.decode(s)
  File "/usr/lib/python3.6/json/decoder.py", line 339, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib/python3.6/json/decoder.py", line 357, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 2 column 1 (char 2)

Process finished with exit code 1

也可能值得注意的是，当您使用搜索表单时，此站点上的URL不会更改。我看不到JSON是否有问题，还是应该只使用硒？

编辑：我正在按要求添加此代码。

last = input("Last Name:")
first = input("First Name: ")
middle = input("Middle Name: ")
booked = input("Booking Date(00/00/0000): ")

def options():
    select = input("Enter 1 for In Custody or 2 for Inquiry:")
    if select == "1":
        select = "In+Custody"
    elif select == "2":
        select = "Inquiry"
    else:
        print("Error. That was not an option")
        options()
    return select

option = options()

Answer 1

您没有做错任何事情。我去检查服务器，发现服务器已设置为POST请求返回HTML。但是，它不是与原始页面完全相同的HTML，因为返回的HTML仅包含有关您要搜索的囚犯的信息。

如果您想从此HTML中提取有关囚犯的信息，我建议使用Beautiful Soup之类的东西，它是HTML解析器，可让您提取所需的任何信息。

Python：为什么我的POST请求无法正常工作？

1 个答案: