python webapi

基于Flask框架编写WebAPI服务

1.webapi

from flask import Flask, jsonify, abort, request

app = Flask(__name__)

app.config.update(RESTIFUL_JSON=dict(ensure_ascii=False))


@app.route("/")
def api_root():
    return "welcome"

@app.route('/tg', methods = ["GET"])
def api_test_get():
    return "test get"

@app.route('/entities/api/v1/students', methods = ["GET"])
def get_students():
    return jsonify({"students" : students}), 200

@app.route('/entities/api/v1/student/<int:id>', methods = ["GET"])
def get_student(id):
    for key in students:
        if key == id:
            return jsonify({"students" : students[key]})
    return jsonify({"error" : "not found student"}), 400

@app.route('/entities/api/v1/student/<int:id>',methods = ["POST"])
def add_student(id):
    print("get post id : ", id)
    print(request.form)
    if not request.form:
        abort(400)
    # dict_form = json.
    if id in students:
        abort(409)
    student = {"name" : request.form['name'],
            "age" : request.form['age'],
            "sex" : request.form['sex']}
    students[id] = student
    return jsonify({"message" : "add student ok"}), 200

@app.route('/entities/api/v1/student<int:id>', methods = ["PUT"])
def update_student(id):
    for key, student in students.items():
        if key == id:
            student['name'] = request.form['name']
            student['age'] = request.form['age']
            student['sex'] = request.form['sex']
        return jsonify({"message" : "alter student ok"})
    abort(400)

@app.route('/entities/api/v1/student/<int:id>', methods = ['DELETE'])
def delete_student(id):
    if id in students:
        students.pop(id)
        return jsonify({"message" : "delete ok"}), 200
    else:
        abort(400)
if __name__ == '__main__':
    print("ok")
    app.run()

2.请求webapi

2.1 get请求

import requests

url = "http://127.0.0.1:5000/entities/api/v1/students"

result = requests.get(url)

status_code = requests.status_code

response_dict = requests.json()

for key, value in respons_dict["students"].items():
    print(key, value)

2.2 post请求

url = "http://127.0.0.1:5000/entities/api/v1/student/1006"

r = requests.post(url, {"name" : "hexiao", "age" : "10", "sex" : "女"})

print(r.status_code)

response_dict = r.json()

print(response_dict)

3.常用状态码

Successful
200(OK)
201(Created)
204(No Content)
Rediction
304(Not Modified)
Client-Side Error
400(Bad Request)
401(Unauthorized)
404(Not Found)
409(Conflict)