以struts2中的寫法為例，可自行用其他框架或servlet。

public String wxNotice() throws IOException{
		HttpServletResponse response = ServletActionContext.getResponse();
		HttpServletRequest request = ServletActionContext.getRequest();
		// -------接受參數-------------------------------------//
		StringBuilder buffer = new StringBuilder();
		BufferedReader reader = request.getReader();
		String line;
		while ((line = reader.readLine()) != null) {
			buffer.append(line);
		}
		String requestBody = buffer.toString();
		System.out.println("request boay:"+ requestBody);
		// -------簽名驗證-------------------------------------//
		String sign = request.getHeader("sign");
		System.out.println("header sign:" + sign);
		boolean signCheck = RSA.verify(requestBody, sign, SignConfig.PAYMAX_PUBLIC_KEY);//簽名規則根據你的項目來定
		//-------處理狀態返回-----------------------------------//
		response.setContentType("text/html;charset=UTF-8");
		response.setCharacterEncoding("UTF-8");//防止輸出的信息出現亂碼
		PrintWriter out = null;
	    out = response.getWriter();
	    if (!signCheck) {
			//簽名驗證失敗
	    	out.print("fail");
		}else{
			out.print("success");
		}
	    out.flush();
	    out.close();
		return null;
	}

本文出自 “藝晨光的博客” 博客，請務必保留此出處http://ycgit.blog.51cto.com/8590215/1940886

Webhooks 通知接收處理