从HttpServletRequest获取当前使用的协议名称？

Question

我正在Spring MVC控制器中构建一个新的URL,以传递回客户端.目前我正在尝试这个:

// httpRequest is the current HttpServletRequest

new URL(httpRequest.getProtocol(),
    httpRequest.getServerName(),
    httpRequest.getServerPort(),
    httpRequest.getContextPath().concat("/foo/bar.html"));

问题是httpRequest.getProtocol()给我"HTTP/1.1"而不仅仅是"HTTP".我可以修剪它,但想知道是否有更优雅的方式.

Answer 1

协议是HTTP/1.1,因为它是HTTP的特定版本.该方案ServletRequest#getScheme本身就是http:

new URL(httpRequest.getScheme(),
httpRequest.getServerName(),
httpRequest.getServerPort(),
httpRequest.getContextPath().concat("/foo/bar.html"));