我有一个 URL 的处理程序，
@app.route("/", methods=['POST'])
@crossdomain(origin='*')
def hello():
ss=str(request.data)
print ss
return ss
处理程序无法检索请求的数据部分。使用 jQuery 时:
jQuery.ajax(
{
type: "POST",
dataType: "json",
data:"adasdasd",
url: 'http://127.0.0.1:5000/',
complete: function(xhr, statusText)
{ alert(xhr.responseText) }})
没有返回
最佳答案
有趣的是，如果数据是使用 flask 无法处理的 mimetype 发布的，事实证明你只能使用 request.data，否则它是一个空字符串 "" 我认为，文档不是很清楚，我做了一些测试，似乎是这样，你可以看看运行我的测试时 flask 生成的控制台输出。
Incoming Request Data
data
Contains the incoming request data as string in case it came with a mimetype Flask does not handle.
取自http://flask.pocoo.org/docs/api/
但是由于我们正在使用 json flask 执行标准的 POST 可以很好地处理这个问题，因此您可以从标准的 request.form 这个 ss=str(request.form) 应该可以解决问题，因为我已经测试过了。
作为旁注 @crossdomain(origin='*') 这看起来很危险，我们不允许跨站点 ajax 请求是有原因的，尽管我相信您有自己的理由。
这是我用来测试的完整代码:
from flask import Flask
app = Flask(__name__)
from datetime import timedelta
from flask import make_response, request, current_app
from functools import update_wrapper
def crossdomain(origin=None, methods=None, headers=None,
max_age=21600, attach_to_all=True,
automatic_options=True):
if methods is not None:
methods = ', '.join(sorted(x.upper() for x in methods))
if headers is not None and not isinstance(headers, basestring):
headers = ', '.join(x.upper() for x in headers)
if not isinstance(origin, basestring):
origin = ', '.join(origin)
if isinstance(max_age, timedelta):
max_age = max_age.total_seconds()
def get_methods():
if methods is not None:
return methods
options_resp = current_app.make_default_options_response()
return options_resp.headers['allow']
def decorator(f):
def wrapped_function(*args, **kwargs):
if automatic_options and request.method == 'OPTIONS':
resp = current_app.make_default_options_response()
else:
resp = make_response(f(*args, **kwargs))
if not attach_to_all and request.method != 'OPTIONS':
return resp
h = resp.headers
h['Access-Control-Allow-Origin'] = origin
h['Access-Control-Allow-Methods'] = get_methods()
h['Access-Control-Max-Age'] = str(max_age)
if headers is not None:
h['Access-Control-Allow-Headers'] = headers
return resp
f.provide_automatic_options = False
return update_wrapper(wrapped_function, f)
return decorator
@app.route("/", methods=['POST'])
@crossdomain(origin='*')
def hello():
ss=str(request.form)
print 'ss: ' + ss + ' request.data: ' + str(request.data)
return ss
@app.route("/test/")
def t():
return """
<html><head></head><body>
<script src="http://code.jquery.com/jquery.min.js" type="text/javascript"></script>
<script type='text/javascript'>
jQuery.ajax(
{
type: "POST",
dataType: "json",
data: "adasdasd",
url: 'http://127.0.0.1:5000/',
complete: function(xhr, statusText)
{ alert(xhr.responseText) }})
var oReq = new XMLHttpRequest();
oReq.open("POST", "/", false);
oReq.setRequestHeader("Content-Type", "unknown");
oReq.send('sync call');
alert(oReq.responseXML);
</script></body></html>
"""
if __name__ == '__main__':
app.run()
输出:
$ python test.py
* Running on http://127.0.0.1:5000/
127.0.0.1 - - [07/Aug/2012 02:45:28] "GET /test/ HTTP/1.1" 200 -
ss: ImmutableMultiDict([('adasdasd', u'')]) request.data:
127.0.0.1 - - [07/Aug/2012 02:45:28] "POST / HTTP/1.1" 200 -
ss: ImmutableMultiDict([]) request.data: sync call
127.0.0.1 - - [07/Aug/2012 02:45:28] "POST / HTTP/1.1" 200 -
127.0.0.1 - - [07/Aug/2012 02:45:29] "GET /favicon.ico HTTP/1.1" 404 -
和我的系统:
$ python --version
Python 2.6.1
$ python -c 'import flask; print flask.__version__;'
0.8
$ uname -a
Darwin 10.8.0 Darwin Kernel Version 10.8.0: Tue Jun 7 16:33:36 PDT 2011; root:xnu-1504.15.3~1/RELEASE_I386 i386
使用谷歌浏览器 版本 20.0.1132.57
关于jquery - Flask 没有从 jQuery 请求数据中获取任何数据，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/11839855/