Python 通过表单在 Flask 上发布数据给出 400 Bad Request
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/19578613/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Posting Data on Flask via form is giving 400 Bad Request
提问by Rahul
I am trying to post data via my front end and the flask app is throwing 400 bad request. However If I am doing the same using Curl call it seems to work fine. I dont know what I am missing in the form.
我正在尝试通过我的前端发布数据，而 Flask 应用程序抛出了 400 个错误的请求。但是，如果我使用 Curl 调用做同样的事情，它似乎工作正常。我不知道我在表格中缺少什么。
The following is my form code
以下是我的表单代码
<script>
function sub() {
console.log('sub function');
$("#fquery").submit();
}
</script>
<form id="form1" action="/final" method="post">
<input id='query' type="text">
<button type="submit" onClick='sub()'>Submit »</button>
</form>
At server side:
在服务器端：
@app.route('/final',methods=['POST','GET'])
def message():
if request.method == 'POST':
app.logger.debug(" entered message function"+ request.form['query'])
q = request.form['query']
return render_template('final.html',query=q,result="Core_Table Output")
The server side seems fine to me. Since I am getting response for curl request
服务器端对我来说似乎很好。由于我收到 curl 请求的响应
curl http://localhost:8000/final -d "query=select starct st blah blah" -X POST -v
* Trying 127.0.0.1... connected
> POST /gc HTTP/1.1
> User-Agent: curl/7.22.0 (i686-pc-linux-gnu) libcurl/7.22.0 OpenSSL/1.0.1 zlib/1.2.3.4 libidn/1.23 librtmp/2.3
> Host: localhost:8000
> Accept: */*
> Content-Length: 41
> Content-Type: application/x-www-form-urlencoded
>
* upload completely sent off: 41out of 41 bytes
* HTTP 1.0, assume close after body
< HTTP/1.0 200 OK
< Content-Type: text/html; charset=utf-8
< Content-Length: 1961
< Server: Werkzeug/0.9.4 Python/2.7.3
< Date: Thu, 24 Oct 2013 23:33:12 GMT
采纳答案by Robin Krahl
Ah, I think I see it: You only set the idbut not the namefor the inputelement. Yet the nameis used in the form data that is sent to the server. This causes a KeyErrorat request.form['query']which causes the 400 error.
啊，我想我明白了：你只为元素设置了id而不是。然而用于发送到服务器的表单数据。这导致在这导致400错误。nameinputnameKeyErrorrequest.form['query']
回答by Jerry
Besides what @Robin Krahl said, You also should add enctype="multipart/form-data"in your form. So the code maybe like this:
除了@Robin Krahl 所说的，您还应该enctype="multipart/form-data"在表单中添加。所以代码可能是这样的：
<form id="form1" action="/final" method="post" enctype="multipart/form-data">
<input id='query' type="text">
<button type="submit" onClick='sub()'>Submit »</button>
</form>"
