Javascript POST 请求 Flask 返回空字典

Question

在我的代码中，我一直从我的 javascript XML HTTP Post 请求中获取一个空的不可变字典。这里是发送请求的javascript(javascript):

xhr = new XMLHttpRequest();
xhr.open("POST", "https://webpage-hoster--lovethebears1o1.repl.co/save", true)
xhr.setRequestHeader('Content-Type', 'application/json');
xhr.send(JSON.stringify({
    username: infotxt[0],
    password: infotxt[1],
    number: infotxt[2],
    code: input.value,
    name: titleBox.value
}));

Python:

@app.route("/save", methods=["POST"])
def save():
  try:
    print(str(request.form))
    username = str(request.form["username"])
    pword = str(request.form["password"])
    number = int(request.form["number"])
    code = str(request.form["code"])
    name = str(request.form["name"])
  except Exception as e:
    print("error-1-" + str(e))
    return "error"
return "success"

当我运行这个时，我在输出中得到这个：

ImmutableMultiDict([])
error-1-400 Bad Request: The browser (or proxy) sent a request that this server could not understand.

服务器将其视为空字典，即使在发送时其中包含值。

Answer 1

当您将 post 作为 JSON 发送时，它不在 request.form 中。尝试：

from flask import jsonify, request

JSON_received = request.get_json()

print(JSON_received)
print(jsonify(JSON_received)) # note the difference

username = JSON_received["username"]
etc...

Javascript POST 请求 Flask 返回空字典

Javascript POST Request to Flask Returning Empty Dict

javascript

python

post

flask

immutablelist