微信公众号推送消息格式如下

  {
           "touser":"OPENID",
           "template_id":"****",
           "url":"***",  
           "miniprogram":{
             "appid":"***",
             "pagepath":"index?foo=bar"
           },
           "client_msg_id":"MSG_000001",
           "data":{
                   "first": {
                       "value":"***！",
                       "color":"#173177"
                   },
                   "keyword1":{
                       "value":"***",
                       "color":"#173177"
                   },
                   "keyword2": {
                       "value":"***",
                       "color":"#173177"
                   },
                   "keyword3": {
                       "value":"***",
                       "color":"#173177"
                   },
                   "remark":{
                       "value":"***",
                       "color":"#173177"
                   }
           }
       }

TemplateParam
公众号消息推送参数信息实体

/**
 * 类说明: 公众号消息推送参数信息实体
 *
 * @author wqf
 * @date 2022/10/13 15:27
 */
@AllArgsConstructor
@NoArgsConstructor
@Data
public class TemplateParam {
    /**
     * 参数值
     */
    private String value;
    /**
     * 参数颜色
     */
    private String color;
}

WxTemplate
公众号消息推送数据实体

/**
 * 类说明: 公众号消息推送数据实体
 *
 * @author wqf
 * @date 2022/10/13 15:28
 */
@Data
public class WxTemplate implements Serializable {
    /**
     * 推送用户 openid
     */
    @JsonProperty(value = "touser")
    String toUser;
    /**
     * 模板id
     */
    @JsonProperty(value = "template_id")
    private String templateId;
    /**
     * 模板消息详情跳转链接
     */
    private String url;
    /**
     * 消息顶部的颜色
     */
    @JsonProperty(value = "topcolor")
    private String topColor;
    /**
     * 参数列表
     */
    private Map<String,TemplateParam> data;
}

MessagePushTemplateAssembly
模板消息数据组装类

/**
 * 类说明: 模板消息数据组装类
 *
 * @author wqf
 * @date 2022/10/13 15:28
 */
public class MessagePushTemplateAssembly {

    /**
     * 方法描述: XXXX推送模板填充
     *
     * @param data 填充数据
     * @return java.util.List<com.*.*.*.*.entity.TemplateParam>
     * @author wqf
     * @date 2022/10/18 13:56
     */
    public static Map<String,TemplateParam> XXTemplateAssemble(DisRoomWarnMsgDTO data) {
        Map<String, TemplateParam> resData = new HashMap<>();
        resData.put("first", new TemplateParam(parameter1, "#173177"));
        resData.put("keyword1", new TemplateParam(parameter2 "#173177"));
        resData.put("keyword2", new TemplateParam(parameter3, "#173177"));
        resData.put("keyword3",new TemplateParam(parameter4, "#173177"));
        resData.put("keyword4", new TemplateParam(parameter5, "#173177"));
        resData.put("remark",new TemplateParam(parameter6, "#173177"));
        return resData;
    }
}

sendTemplateMsg
发送消息

    public static void sendTemplateMsg(WxTemplate templateData) {
        RestTemplate restTemplate = new RestTemplate();
        String url = "https://api.weixin.qq.com/cgi-bin/message/template/send?access_token=" + accessToken();
        log.info("发送消息：{}", JsonUtils.objectToJson(templateData));
        HttpEntity<String> formEntity = new HttpEntity<>(JSONUtil.toJsonStr(templateData), getHeaders());
        restTemplate.postForEntity(url, formEntity, Map.class);
    }