index.html增加https和http都可以访问

public/index.html

@@ -5,6 +5,7 @@
   <meta charset="utf-8">
   <meta http-equiv="X-UA-Compatible" content="IE=edge">
   <meta name="viewport" content="width=device-width,initial-scale=1.0">
+  <meta http-equiv="Content-Security-Policy" content="upgrade-insecure-requests" />
   <!-- 使用CDN的CSS文件 -->
   <% for (var i in htmlWebpackPlugin.options.cdn && htmlWebpackPlugin.options.cdn.css) { %>
     <link href="<%= htmlWebpackPlugin.options.cdn.css[i] %>" rel="preload" as="style">