无法获取POST参数 [英] Can't get POST parameters
问题描述
我正在使用WebApp2作为框架在Python中开发Web应用程序. 我无法通过填写表格来提交http POST请求参数.
I'm developing a web app in Python using WebApp2 as framework. I can't get the http POST request parameters submitted by filling a form.
那是我创建的表单的HTML代码
That's the HTML code of the form I created
<html>
<head>
<title>Normal Login Page </title>
</head>
<body>
<form method="post" action="/loginN/" enctype="text/plain" >
eMail: <input type="text" name="eMail"><br/>
password: <input type="text" name="pwd"><br/>
<input type="submit">
</form>
</body>
那是按下提交按钮后POST请求的结果
That's the result of the POST request after pressing the submit button
POST /loginN/ HTTP/1.1
Accept:
text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Language: it-IT,it;q=0.8,en-US;q=0.6,en;q=0.4
Cache-Control: max-age=0
Content-Length: 33
Content-Type: text/plain
Content_Length: 33
Content_Type: text/plain
Cookie:
session=############
Host: ###########
Origin: ###########
Referer: ############
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Safari/537.36
X-Appengine-City: #######
X-Appengine-Citylatlong: ########
X-Appengine-Country: ##
X-Appengine-Region: ##
X-Cloud-Trace-Context: ##
eMail=mymail@email.com
pwd=mypwd
那是POST请求处理程序的代码
That's the code of the POST request handler
class loginN(BaseHandler):
def post(self):
w = self.response.write
self.response.headers['Content-Type'] = 'text/html'
logging.info(self.request)
logging.info(self.request.POST.get('eMail'))
logging.info(self.request.POST.get('pwd'))
email = self.request.POST.get('eMail')
pwd = self.request.POST.get('pwd')
w('<html>')
w('<head>')
w('<title>Data Page </title>')
w('</head>')
w('<p>Welcome! Your mail is: %s</p>' % email)
w('<p>Your pwd is: %s</p>' % pwd)
w('</body>')
BaseHandler是webapp2.RequestHandler的扩展，用于处理会话(我也尝试过使用webapp2.RequestHandler，并且得到了相同的结果).
BaseHandler is webapp2.RequestHandler extended for handling sessions (i tried with webapp2.RequestHandler also and i got the same results).
我每次得到的都是两个参数都为空.
What I get every time is None for both parameters.
有关如何解决问题的任何建议?我也尝试过self.request.get，而不是self.request.POST.get，但是也没有用(我也没有得到None)
Any suggestions about how to solve the problem? I tried self.request.get also, instead self.request.POST.get, but it didn't work too (i didn't get None neither)
推荐答案
尝试从表单中删除enctype="text/plain"属性，然后使用self.request.POST.get('eMail')和self.request.POST.get('pwd').
Try removing the enctype="text/plain" attribute from the form, and then use self.request.POST.get('eMail') and self.request.POST.get('pwd').
删除enctype="text/plain"的原因是因为您希望enctype为"text/html"(这是默认设置)，以便webapp2可以将表单读取为html表单.仅将其设置为"text/plain"时，表单的输出作为纯文本包含在请求的主体中，这是您打印请求时所看到的.如果使用"text/plain"，则可以使用以下命令以字符串形式访问表单的输出:
The reason why removing enctype="text/plain" works is because you want the enctype to be "text/html" (which is the default) in order for webapp2 to read the form as an html form. When it is just set to "text/plain", the form's output is contained in the body of the request as just text, which is what you saw when you printed out the request. If you use "text/plain", then you could access the form's output as a string by using:
form_string = str(self.request.body)
，然后您可以解析该字符串以获取键值对.正如您已经知道的那样，仅将enctype设置为html即可获得标准的http形式的功能.
and then you could parse that string to get the key-value pairs. As you're already aware though, it is easier just to set the enctype to html to get the standard http-form functionality.
我在文档中找不到具体的enctype信息，但是如果您对请求对象有其他疑问，建议阅读
I couldn't specifically find enctype information in the documentation, but if you have other questions about the request object I suggest reading the Webob Documentation for a request object. Webapp2 uses Webob requests, so that documentation is the place to go to understand your request obejct.
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