取得地址栏完整请求信息

	public static String getCompleteURL(HttpServletRequest request) {
		return new StringBuilder(getCurrentHttpURL(request))
			.append(request.getServletPath()).append("?")
				.append(request.getQueryString()).toString();
	}
	
	/**
	 * 取得当前http地址
	 * @param request
	 * @return
	 * Date: 2008-12-1 下午02:59:03
	 */
	public static String getCurrentHttpURL(HttpServletRequest request){
		
		StringBuilder urlBuilder = new StringBuilder();
		urlBuilder.append(request.getScheme()).append("://");
		urlBuilder.append(request.getServerName());
		urlBuilder.append(request.getHeader("host")).append(":");
		urlBuilder.append(request.getServerPort());
		urlBuilder.append(request.getContextPath()).append("/");
		
		String httpAddr = urlBuilder.toString();
		urlBuilder = null;
		return httpAddr;
	}