在HTML页面和python脚本之间传输数据
[英]transferring data between my HTML page and python script
问题描述
I have a very simple HTML page for testing which has a simple dropdown menu: 
我有一个非常简单的HTML测试页面，其中包含一个简单的下拉菜单：
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<select id="mySelect" onchange="copy();">
<option value="">Select a person:</option>
<option value="Value of m1" >m1</option>
<option value="Value of m2" >m2</option>
<option value="Value of m3" >m3</option>
<option value="Value of m4" >m4</option>
</select>
<br>
<br>
<p>The value of your selected choice is: </p>
<div id="label"></div>
function copy()
{
var selected_value = document.getElementById("mySelect").value
document.getElementById("label").innerHTML = selected_value
}
</script>
</body>
</html>
Now I want to transfer the value of the selection into my python script. 现在，我要将选择的值传输到我的python脚本中。 My python script has a function which uses the passed value as an argument to give a JSON file. 我的python脚本具有一个函数，该函数使用传递的值作为参数来提供JSON文件。 I want to pass the value and then run the script to produce my JSON file when I select something. 我想传递值，然后在选择某些内容时运行脚本以生成JSON文件。 This is just for testing but my final HTML page will have multiple dropdowns similar to this one each one transferring a value to my python which would be used as an argument. 这仅用于测试，但我的最终HTML页面将具有多个类似于此的下拉列表，每个下拉列表都将一个值传输到我的python中，该值将用作参数。 Everything is done locally using local host. 一切都使用本地主机在本地完成。 Any help would be appreciated! 任何帮助，将不胜感激！
1 个解决方案
解决方案1
-3 2017-12-25 16:14:29
Its a bit tricky. 有点棘手。 You have to use a form to send the data to a PHP-Web Server. 您必须使用表格将数据发送到PHP-Web服务器。 Then use shell_exec($command) to run your Python Script with parameters. 然后使用shell_exec（$ command）运行带有参数的Python脚本。
Your PHP Script should look like this: 您的PHP脚本应如下所示：
<?php
$input = $_GET['mySelect'];
//sanitize and check the input
$cmd = escapeshellcmd('/usr/custom/test.py -p ' . $input);
//escape the command
$output = shell_exec($cmd);
//run the script
echo $output;
?>
It's very important to sanitize and check your user input otherwise an attacker could easily get acces to your server. 清理并检查用户输入非常重要，否则攻击者很容易就能获得服务器的访问权限。
See more: http://php.net/manual/en/function.shell-exec.php 查看更多： http : //php.net/manual/en/function.shell-exec.php
Notes from php.net 来自php.net的说明
This function can return NULL both when an error occurs or the program produces >no output.
This function is disabled when PHP is running in safe mode.
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