HttpServletRequest對象獲取當前域名

獲取域名，如：http://f0rb.iteye.com/

StringBuffer url = request.getRequestURL();
String tempContextUrl = url.delete(url.length() - request.getRequestURI().length(), url.length()).append("/").toString();

 

獲取帶部署環境上下文的域名，如： http://www.iteye.com/admin/

　　這個方法是在別人那看見的，我用到時候request.getServletContext()是報錯的；

StringBuffer url = request.getRequestURL();
String tempContextUrl = url.delete(url.length() - request.getRequestURI().length(), url.length()).append(request.getServletContext().getContextPath()).append("/").toString();

　　因而我看了下改爲了以下：

StringBuffer url = request.getRequestURL();
		String tempContextUrl = url.delete(url.length() - request.getRequestURI().length(), url.length()).append(request.getSession().getServletContext().getContextPath()).append("/").toString();