HttpServletRequest对象获取当前域名

获取域名，如：http://f0rb.iteye.com/

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

 

获取带部署环境上下文的域名，如： http://www.iteye.com/admin/

　　这个方法是在别人那看见的，我用到时候request.getServletContext()是报错的；

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

　　于是我看了下改成了如下：

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