Java实现微信公众号获取临时二维码功能示例

public class WeChatQRCodeTest {
  public static void main(String[] args) {
    String qrcodeUrl = "";
    try {
      String accessToken = "15_Yws71Wr-Fk9DW5acDWvyn3YWTfp_jkuBxCl8Hue5hRrB064FVrYSPZgNqdxpw1WKVbp0c7DIerwzGa2iuJDI2er3q7ntf" +
          "WNteHZbpSXwCLnUh0p16UQvUhisKKqTrPAMQQdHXklTywmQ6L8MVKNiAJAAPS";
      JSONObject jsonObject = new JSONObject();
      jsonObject.put("expire_seconds", 2592000);
      jsonObject.put("action_name", "QR_STR_SCENE");
      JSONObject actionInfo = new JSONObject();
      JSONObject scene = new JSONObject();
      scene.put("scene_str", "二维码中携带的信息");
      actionInfo.put("scene", scene);
      jsonObject.put("action_info", actionInfo);
      String url = "https://api.weixin.qq.com/cgi-bin/qrcode/create?access_token=" + accessToken;
      String result = HttpClientUtil.doPostJson(url, jsonObject.toJSONString());
      JSONObject resultJson = JSONObject.parseObject(result);
      String ticket = resultJson.getString("ticket");
      /**
       * 实际应用中可以根据过期时间服务器存储ticket
       */
      Integer expire_seconds = resultJson.getInteger("expire_seconds");
      qrcodeUrl = "https://mp.weixin.qq.com/cgi-bin/showqrcode?ticket=" + URLEncoder.encode(ticket, "UTF-8");
    } catch (UnsupportedEncodingException e) {
      e.printStackTrace();
    }
    System.out.println(qrcodeUrl);
  }
}