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[英]How to render static HTML with JSON data with no client-side javascript?
[英]How to receive JSON data with Python (server with websockets) and JavaScript (client-side)
我有一个新手问题,想从作为服务器的Python接收JSON数据。 我需要告诉你服务器是基于WebSockets的,并且我已经成功地将JSON数据从Python发送到JavaScript,但是我找不到任何来源如何处理该数据并将其显示在不同的div中,例如value of在first_name
在id="message-1"
div
, second_name
在message2
div
等你能帮我想出解决办法? 这是我的firefox返回的代码和图片: 网页 。
我几乎忘了提到我将localhost与xampp或ngrok一起使用来“托管”客户端。 另外,存在连接,因为我在网站以及python控制台中都收到日志
提前致谢 :)
这是python代码:
import asyncio
import websockets
import json
async def time(websocket, path):
while True:
d = {'first_name': 'Guido',
'second_name': 'Rossum',
'titles': ['BDFL', 'Developer'],
}
parsed = json.dumps(d)
name = "Jeremy"
# now = datetime.datetime.utcnow().isoformat() + 'Z'
for i in range(1):
await websocket.send(parsed)
response = await websocket.recv()
print(response)
start_server = websockets.serve(time, '127.0.0.1', 4040)
asyncio.get_event_loop().run_until_complete(start_server)
asyncio.get_event_loop().run_forever()
这是HTML / JS代码
<body>
<div id="message-1"></div>
<div id="message-2"></div>
<div id="message-3"></div>
<script>
var ws = new WebSocket("ws://127.0.0.1:4040/");
ws.onopen = function () {
ws.send('Hello, Server!!');
//send a message to server once ws is opened.
console.log("It's working onopen log / awake");
};
ws.onmessage = function (event) {
if (typeof event.data === "string") {
// If the server has sent text data, then display it.
console.log("On message is working on log with onmessage :)");
var label = document.getElementById("message-1");
label.innerHTML = event.data;
}
};
ws.onerror = function (error) {
console.log('Error Logged: ' + error); //log errors
};
</script>
</body>
ws.onmessage = function (event) {
try {
var obj = JSON.parse(event.data);
document.getElementById("message-1").innerHTML = obj.first_name;
document.getElementById("message-2").innerHTML = obj.second_name;
document.getElementById("message-3").innerHTML = obj.titles.join(" ");
} catch {
console.log("Object is not received, Message is:: ", event.data);
}
}
记住JSON需要是有效的JSON,替换
'
(单引号)用"
(双引号):
d = {
"first_name": "Guido",
"second_name": "Rossum",
"titles": ["BDFL", "Developer"]
}
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