misplaced-xml-declaration.html - Android社区 - https://www.androidos.net.cn/

 <?xml version="1.0" encoding="koi8-r"?>
<html>
<body>
Should be your browser default encoding: 
<script>
  if (window.layoutTestController)
    layoutTestController.dumpAsText();
  document.write(document.characterSet)
</script>
</body>