通過控制層返回頁面彈窗

效果：

代碼：

public R Demo(HttpServletResponse response)
			throws IOException {
		/*
		 * 業務處理代碼
		 */
		String msg = "Success---";
		response.setCharacterEncoding("UTF-8");
		response.setContentType("text/html; charset=utf-8");
		PrintWriter out = response.getWriter();
		out.print("<script>alert('" + msg + "');history.go(-1);</script>");
		return null;

	}

不是很好看，但能用QAQ