copywebpackplugin配置问题

Question

在electron.js应用程序中，我试图根据以下指示从node.js调用并执行python脚本： https://nodejs.org/api/child_process.html#child_process_child_process_execfile_file_args_options_callback

import { execFile } from 'child_process';

let pythonPath = '/home/marco/anaconda3/bin/python3';

execFile('./scripts/factorial.py',
  [parseInt(msg)],
  { cwd: './scripts',
    env: '/home/marco/anaconda3/bin/python3'
  },
  (error, stdout, stderr) => {
    if (error) {
      throw error;
    }
    console.log(stdout);
  }
);

我得到了这个错误：

在评论options部分时：

execFile('./scripts/factorial.py',
  [parseInt(msg)],
  //{ cwd: './scripts',
    //env: '/home/marco/anaconda3/bin/python3'
  //},
  (error, stdout, stderr) => {
    if (error) {
      throw error;
    }
    console.log(stdout);
  }
);

我也犯了同样的错误

在此处找到以下指示：https://www.tutorialspoint.com/run-python-script-from-node-js-using-child-process-spawn-method 我修改代码如下：

const { spawn } = require('child_process');

let nb = parseInt(msg);

function runScript() {
  return spawn ('python3', [
    "-u",
    path.join(__dirname, './scripts/factorial.py'),
    nb,
  ]);
}

const subprocess = runScript();

subprocess.stdout.on('data', (data) => {
  console.log(`data:${data}`);
});

subprocess.stderr.on('data', (data) => {
  console.log(`error:${data}`);
});

subprocess.stderr.on('close', () => {
  console.log("Closed");
});

我得到这个错误：

error:python3: can't open file '/home/marco/webMatters/electronMatters
/PythonConnection/.webpack/main/scripts/factorial.py': [Errno 2] No 
such file or directory

Closed

按照此处的指示：https://webpack.js.org/plugins/copy-webpack-plugin/#root我将/tools/webpack/webpack.plugins.js修改为：

 const CopyPlugin = require("copy-webpack-plugin");
module.exports = [
  new ForkTsCheckerWebpackPlugin(),
  new webpack.ExternalsPlugin('commonjs', [
    'electron'
  ]),
  new CopyPlugin({
    patterns: [
      { from: "src/scripts/", to: ".webpack/main/script/" },
    ],
  }),
];

对我来说，这似乎是尊重标准的，但我得到了一条很长的错误信息：

An unhandled error has occurred inside Forge:
compilation.getCache is not a function
TypeError: compilation.getCache is not a function
    at /home/marco/webMatters/electronMatters/PythonConnection
/node_modules/copy-webpack-plugin/dist/index.js:459:33
    at SyncHook.eval (eval at create (/home/marco/webMatters
/electronMatters/PythonConnection/node_modules/tapable
/lib/HookCodeFactory.js:19:10),   <anonymous>:7:1)
at SyncHook.lazyCompileHook (/home/marco/webMatters/electronMatters
/PythonConnection/node_modules/tapable/lib/Hook.js:154:20)
at Compiler.newCompilation (/home/marco/webMatters/electronMatters
/PythonConnection/node_modules/webpack/lib/Compiler.js:630:30)
at /home/marco/webMatters/electronMatters/PythonConnection
/node_modules/webpack/lib/Compiler.js:667:29
at AsyncSeriesHook.eval [as callAsync] (eval at create (/home/marco
/webMatters/electronMatters/PythonConnection/node_modules/tapable
/lib/HookCodeFactory.js:33:10), <anonymous>:6:1)
at AsyncSeriesHook.lazyCompileHook (/home/marco/webMatters
/electronMatters/PythonConnection/node_modules/tapable
/lib/Hook.js:154:20)
at Compiler.compile (/home/marco/webMatters/electronMatters
/PythonConnection/node_modules/webpack/lib/Compiler.js:662:28)
at /home/marco/webMatters/electronMatters/PythonConnection
/node_modules/webpack/lib/Watching.js:77:18
at AsyncSeriesHook.eval [as callAsync] (eval at create (/home/marco
/webMatters/electronMatters/PythonConnection/node_modules/tapable
/lib/HookCodeFactory.js:33:10), <anonymous>:33:1)
at AsyncSeriesHook.lazyCompileHook (/home/marco/webMatters
/electronMatters/PythonConnection/node_modules/tapable
/lib/Hook.js:154:20)
at Watching._go (/home/marco/webMatters/electronMatters
/PythonConnection/node_modules/webpack/lib/Watching.js:41:32)
at /home/marco/webMatters/electronMatters/PythonConnection
/node_modules/webpack/lib/Watching.js:33:9
at Compiler.readRecords (/home/marco/webMatters/electronMatters
/PythonConnection/node_modules/webpack/lib/Compiler.js:529:11)
at new Watching (/home/marco/webMatters/electronMatters
/PythonConnection/node_modules/webpack/lib/Watching.js:30:17)
at Compiler.watch (/home/marco/webMatters/electronMatters
/PythonConnection/node_modules/webpack/lib/Compiler.js:244:10)
error Command failed with exit code 1.

这似乎更进一步，但仍有一些问题需要解决

节点版本：v14.5.0 OS:Ubuntu 18.04 Desktop

如何解决这个问题？ 期待您的帮助

Answer 1

似乎您的问题在于您正在使用webpack<；5和复制不兼容的网页包插件7

只要做：

npm install copy-webpack-plugin@6  save-dev

去修理它