Question

我正在尝试通过添加，修改和删除信息来测试我编写的Flask脚本。但是，如果我运行methods=["GET"]以外的任何内容，则会收到一条错误消息，提示不允许使用该方法。

我正在运行的脚本是：

#!flask/bin/python

from flask import Flask, jsonify, request, abort, make_response
from flask_cors import CORS
import csv

stocks = [
    {"id": 1, "Stock": "BoI", "Price": 300},
    {"id": 2, "Stock": "Apple", "Price": 499}
    ]

Next_ID = len(stocks)

app = Flask(__name__, static_url_path="", static_folder=".")
CORS(app, support_credentials=True)

@app.route("/")

@app.route("/Stocks")
def getAll():
    return jsonify(stocks)
    # curl http://127.0.0.1:5000

@app.route("/Stocks/<int:id>")
def getById(id):
    sel_stock = list(filter(lambda s: s["id"] == id, stocks))
    if len(sel_stock) == 0:
        return jsonify ({}), 204
    else:
        return jsonify(sel_stock[0])
    # curl http://127.0.0.1:5000/1

@app.route("/Stocks", methods=["POST"])
def create(id):
    global Next_ID
    if not request.json:
        abort(400)

    stock = {
        "id": Next_ID,
        "Stock": request.json["Stock"],
        "Price": request.json["Price"],
    }
    Next_ID += 1
    stocks.append(stock)
    return jsonify(stock)
    # return str(Next_ID)

@app.route("/Stocks", methods=["PUT"])
def update(id):
    sel_stock = list(filter(lambda s: s["id"] == id, stocks))
    if len(sel_stock) == 0:
        abort(400)

    sel_stock = sel_stock[0]
    if not request.json:
        abort(400)
    reqJSON = request.json

    if reqJSON["Stock"]:
        sel_stock["Stock"] = reqJSON["Stock"]
    if reqJSON["Price"]:
        sel_stock["Price"] = reqJSON["Price"]

    return jsonify(sel_stock)

@app.route("/Stocks", methods=["DELETE"])
def delete(id):
    return "in delete"

if __name__ == "__main__":
    app.run(debug = True)

如果我运行curl命令以获取所有信息或通过ID号获取信息，则没有问题。但是，如果我尝试以下curl命令，则会收到错误消息：

curl -i -H "Content-Type:application/json" -X POST -d "{\"Stock\":\"IBM\",\"Price\":\123}" http://127.0.0.1:5000/Stocks

TypeError：create（）缺少1个必需的位置参数：“ id”

Answer 1

您不需要，无需将id传递给POST方法，因为其网址中没有id作为参数：

@app.route("/Stocks", methods=["POST"])
def create(): # removed id
    """some code here"""

防止PUT，DELETE和POST的烧瓶

1 个答案: