一、编写页面
主要是引入相关的css文件和js文件，这里采用简单插入link和script标签的形式。
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<!doctype html><html lang="en"><head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="x-ua-compatible" content="ie=edge"> <title>document</title> <link rel="stylesheet" href="codemirror/lib/codemirror.css" rel="external nofollow" > <link rel="stylesheet" href="codemirror/addon/fold/foldgutter.css" rel="external nofollow" > <link rel="stylesheet" href="codemirror/addon/hint/show-hint.css" rel="external nofollow" > <link rel="stylesheet" href="codemirror/addon/lint/lint.css" rel="external nofollow" > <link rel="stylesheet" href="leetcode.css" rel="external nofollow" > </head><body> <form action=""> <textarea id="editor" class="editor"></textarea> </form> <button id="test">click</button></body></html><script src="codemirror/lib/codemirror.js"></script><script src="codemirror/addon/comment/comment.js"></script><script src="codemirror/addon/selection/active-line.js"></script><script src="codemirror/keymap/sublime.js"></script><script src="codemirror/addon/hint/show-hint.js"></script><script src="codemirror/mode/python/python.js"></script> <script src="codemirror/addon/fold/foldcode.js"></script><script src="codemirror/addon/fold/foldgutter.js"></script><script src="codemirror/addon/fold/brace-fold.js"></script><script src="codemirror/addon/fold/indent-fold.js"></script><script src="codemirror/addon/fold/comment-fold.js"></script><script src="codemirror/addon/edit/closebrackets.js"></script><script src="codemirror/addon/edit/matchbrackets.js"></script><script src="axios.js"></script><script src="index.js"></script> |
二、配置codemirror
在index.js中配置codemirror
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window.onload = function () { var el = document.getelementbyid("editor"); var version = "# version: python3\n\n"; var codeareatip = "# please edit your code here:\n"; var codestart = "# code start\n\n"; var codeend = "# code end\n\n"; var codetip = "'''\nthis function is the entry of this program and\nit must be return your answer of current question.\n'''\n"; var code = "def solution():\n\tpass"; var initvalue = version + codeareatip + codestart + codeend + codetip + code; var mycodemirror = codemirror.fromtextarea(el, { mode: "python", // 语言模式 theme: "leetcode", // 主题 keymap: "sublime", // 快键键风格 linenumbers: true, // 显示行号 smartindent: true, // 智能缩进 indentunit: 4, // 智能缩进单位为4个空格长度 indentwithtabs: true, // 使用制表符进行智能缩进 linewrapping: true, // // 在行槽中添加行号显示器、折叠器、语法检测器 gutters: ["codemirror-linenumbers", "codemirror-foldgutter", "codemirror-lint-markers"], foldgutter: true, // 启用行槽中的代码折叠 autofocus: true, // 自动聚焦 matchbrackets: true, // 匹配结束符号，比如"]、}" autoclosebrackets: true, // 自动闭合符号 styleactiveline: true, // 显示选中行的样式 }); // 设置初始文本，这个选项也可以在fromtextarea中配置 mycodemirror.setoption("value", initvalue); // 编辑器按键监听 mycodemirror.on("keypress", function() { // 显示智能提示 mycodemirror.showhint(); // 注意，注释了codemirror库中show-hint.js第131行的代码（阻止了代码补全，同时提供智能提示） }); var test = document.getelementbyid("test"); test.onclick = function() { var value = mycodemirror.getvalue(); axios.post("http://localhost/api/runcode", { code: value }).then(function(res) { console.log(res); }); };}; |
三、后台调用python shell
过程如下：
-
在接收的代码字符串后面添加
print(solution())用于打印结果 -
将第一步处理后的字符串写入一个文件中
这里是code/code.py -
使用
child_process模块的exec方法调用shell执行python code/code.py命令，获取打印结果
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const express = require("express");const { exec } = require("child_process");const router = express.router();router.post("/api/runcode", (req, res) => { let code = req.body.code; fs.writefile("code/code.py", code+"\nprint(solution())", (err) => { let command = "python code/code.py"; exec(command, (err, stdout, stdin) => { if(err){ let reg = /[\d\d]*(line\s\d)[\d\d]*?(\w*(?:error|exception).*)/im; let matcharr = reg.exec(err.message); matcharr.shift(); res.send(matcharr.join(", ")); } else res.send(stdout); }); });}); |
效果：
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：https://segmentfault.com/a/1190000017875558
