关于前后端json数据的发送与接收详解

from flask import Flask
from flask import jsonify
from flask import request
import json
...

# 登录
@app.route("/flask/login", methods=['POST'])
def login():
 data_ = request.form.get('data')
 data = json.loads(data)
 username = data['username']
 password = data['password']
 rem = False
 if data['remember']:
  rem = True
 return jsonify({"login": Login.login(username, password, rem)}) # 返回布尔值

from flask import Flask
from flask import jsonify
from flask import request
import json
...

# 登录
@app.route("/flask/login", methods=['POST'])
def login():
 data = request.get_data()
 data = json.loads(data)
 username = data['username']
 password = data['password']
 rem = False
 if data['remember']:
  rem = True
 return jsonify({"login": Login.login(username, password, rem)}) # 返回布尔值

from flask import Flask
from flask import jsonify
from flask import request

...

# 登录
@app.route("/flask/login", methods=['POST'])
def login():
 data = request.get_json()
 username = data['username']
 password = data['password']
 rem = False
 if data['remember']:
  rem = True
 return jsonify({"login": Login.login(username, password, rem)}) # 返回布尔值

function login() {
 var username =document.getElementById("username").value;
 var password = document.getElementById("password").value;
 var remember =document.getElementById("remember").checked;
 var xmlhttp;
 if (window.XMLHttpRequest)
 {
  // IE7+, Firefox, Chrome, Opera, Safari 浏览器执行代码
  xmlhttp=new XMLHttpRequest();
 }
 else
 {
  // IE6, IE5 浏览器执行代码
  xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
 }
 xmlhttp.onreadystatechange=function()
 {
  if (xmlhttp.readyState===4 && xmlhttp.status===200)
  {
   ...
  }
 };

 xmlhttp.open("POST","/flask/login",true);
 xmlhttp.setRequestHeader("Content-type","application/json");
 // 后面这两部很重要，我看网上很多都是使用xmlhttp.send("username="+username+"&password="+"),这样接收还要解析一番感觉还是直接发送以下格式的好些
 var data = {
  "username": username
  "password": password
  "remember": remember
 };
 var data_json = JSON.stringify(data);
 xmlhttp.send(data_json);
}

 var text = xmlhttp.responseText;
 // 通过eval() 方法将json格式的字符串转化为js对象，并进行解析获取内容
 var result = eval("("+text+")");
 if (result) {
    
  } else {
    alert("请输入正确的用户名和密码");
   }

 $(document).ready(function () {
 var data = {
 "username": "adamin",
 "password": "123456789",
 "remember": true
 }
 $.ajax({
  url: "/flask/login",
  type: "POST",
  data: data,
  success: function () {
   
  }
 })
 })