从Python传递JSON到JavaScript
从Python传递JSON到JavaScript
关键字:Python 3.4,HTML5,JSON,JavaScript1.LocalServer.py,启动server,打开网页,传递JSON。
from threading import Thread
import time
import webbrowser
import http.server
import socketserver
import json
import os
port_number = 8000
server = None
def startServer(port):
originDir = os.getcwd()
os.chdir(os.path.dirname(os.path.realpath(__file__)))
Handler = http.server.SimpleHTTPRequestHandler
global server
server = socketserver.TCPServer(("", port), Handler)
print("serving at port", port)
server.serve_forever()
os.chdir(originDir)
def start(port):
thread = Thread(target=startServer, args=[port])
thread.start()
time.sleep(2) #Wait to start the server first
def test():
if not server:
print("Failed to start server")
url = "http://localhost:" + str(port_number) + '/' + 'index.html'
url += "?number="
url += "1"
jsonObj = {
"person": {
"name": "Jack",
"age": 20
}
}
jsonStr = json.dumps(jsonObj)
url += "&person="
url += jsonStr
webbrowser.open(url)
print(url + " is opened in browser")
def stop():
if server:
server.shutdown()
if __name__ == "__main__":
start(port_number)
test()
2.index.html, 接受JSON string,转换成JSON object。
<!DOCTYPE html>
<html>
<head>
<title>Home</title>
</head>
<body>
<script>
function getQueryStringByName(name){
var result = location.search.match(new RegExp("[\?\&]" + name+ "=([^\&]+)","i"));
if(result == null || result.length < 1){
return "";
}
return result[1];
}
var personStr = getQueryStringByName('person');
personStr = decodeURIComponent(personStr);
var personObj = JSON.parse(personStr);
alert(personStr);
</script>
</body>
</html>
3.把LocalServer.py和index.html放到同一个文件夹下面。运行LocalServer.py。
4.LocalServer.py也可以被其他py文件调用。例如添加test.py如下
import LocalServer
LocalServer.start(8000)
LocalServer.test()
5.运行test.py,将看到同样的结果。
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