electron代码示例 在 html 中调用 electron 的函数 主进程的函数 nodejs

1，

创建窗口时必须打开nodeIntegration：

  win = new BrowserWindow({
     800,
    height: 600,
    sandbox: true,
    
    webPreferences: {
      nodeIntegration: true
    },
    
   
  })

2，示例

html是在renderer进程。如果要调用主进程需要用remote

  <input type="button" value="cache" onclick="getCache()">
  <script>
    const { remote, ipcRenderer, shell } = require('electron');
    const win = remote.getCurrentWindow();
    var getCache=()=>{
      var size = win.webContents.session.getCacheSize();
    }
    const mainProcess = remote.require('./main.js');
  </script>

electron In action 示例很好：

https://github.com/electron-in-action

---

改变发送头：

function createWindow() {

  const filter = {
    urls: ["http://192.168.50.206:8080/*", "http://192.168.50.199:8087/*", 'https://*.github.com/*', '*://electron.github.io/']
  }
  //session.defaultSession.webRequest.onBeforeSendHeaders
  /**/
  session.defaultSession.webRequest.onBeforeSendHeaders(filter, (details, callback) => {
    details.requestHeaders['User-Agent'] = 'MyAgent'
    callback({ requestHeaders: details.requestHeaders })
  })
。。。。。。。

改变响应头

 session.defaultSession.webRequest.onHeadersReceived((details, callback) => {
    // logger.debug(`onHeadersReceived: url:${details.url}, details:${JSON.stringify(details)}`);
    console.log("========= electron onHeadersReceived ====================")
    //console.log(stringtoHex(details))


    //                           for (const key in details.responseHeaders) {
    //                               const lowerKey = key.toLowerCase();
    //                               switch (lowerKey) {
    //                                   case 'x-frame-options':
    //                                   case 'content-security-policy':
    //                                       // logger.debug(`Received header ${key}: ${details.responseHeaders[key]}`);
    //                                       delete details.responseHeaders[key];
    //                                       break;
    //                               }
    //                           }

    console.log(`Response headers: ${JSON.stringify(details.responseHeaders)}`);
    callback({
      cancel: false,
      responseHeaders: details.responseHeaders,
      statusLine: details.statusLine,
    });
  });