1.打开Eclipse ->help ->install new software
2.Work with：http://download.eclipse.org/releases/ganymede/
3.在Web and Java EE Develpment打√，next
4.在Java Dvelopment打√，next
5.下载安装完成后，重开
New -> HTML File。即可。
<!DOCTYPE html>
<html>
<head>
</head>
<body>
Hello, World.
</body>
</html>
