java中微信订阅消息发送通知

一、开发中实际场景，例如用户余额不足时像用户发送余额不足通知

1.在微信公众平台申请订阅消息功能

2.编写测试类发送通知

1.获取token

2.组装报文

3.调用微信api

4.获取返回状态码成功，则为ok

public void sendChargeMessage() {
        Token token = Token.getInstance();
        String accessToken = token.getAccessToken();
        System.out.println("我拿到token了++++++++" + accessToken);

        Map data = new HashMap<>();
        WeChatTemplateData templateOrderIdData = new WeChatTemplateData();
        templateOrderIdData.setValue("");
        templateOrderIdData.setColor("#173177");

        WeChatTemplateData templateNameData = new WeChatTemplateData();
        templateNameData.setValue("");
        templateNameData.setColor("#173177");
    

        WeChatTemplateData templateTing5Data = new WeChatTemplateData();
        templateTing5Data.setValue("");
        templateTing5Data.setColor("#173177");

        WeChatTemplateData templateAmountData = new WeChatTemplateData();
        templateAmountData.setValue("");
        templateAmountData.setColor("#173177");

        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy年M月d日 HH:mm");
        LocalDateTime currentDateTime = LocalDateTime.now();
        String formattedDateTime = currentDateTime.format(formatter);
        WeChatTemplateData templateTimeData = new WeChatTemplateData();
        templateTimeData.setValue(formattedDateTime);
        templateTimeData.setColor("#173177");
        

        data.put("character_string4", templateOrderIdData);
        data.put("thing1", templateNameData);
        data.put("thing3", templateTing5Data);
        data.put("amount2", templateAmountData);
        data.put("time5", templateTimeData);
        log.info("消息发送数据：{}", data.toString());

        String result = this.chargeMessage(accessToken, open_id, data);
        log.info("消息发送结果：", result);
    }


    /**
     * 发送余额不足消息
     *
     * @param accessToken
     * @param touser
     * @param map
     * @return
     */
    public String chargeMessage(String accessToken, String touser, Map map) {
        WechatTemplate message = new WechatTemplate();
        //拼接数据
        message.setPage(messPath);
        message.setData(map);
        message.setTouser(touser);
        message.setTemplate_id(chargeTemId);
        message.setAccess_token(accessToken);
        message.setMiniprogram_state(type);//跳转小程序类型 “体验版”
        String json = com.alibaba.fastjson.JSONObject.toJSONString(message);
        System.out.println("要发送的数据" + json);
        String ret = URLUtils.sendPost("https://api.weixin.qq.com/cgi-bin/message/subscribe/send?access_token=" + accessToken, json);
        return ret;
    }

3.封装的实体类WechatTemplateData

public class WeChatTemplateData {

	private String value;  
    private String color;
	public String getValue() {
		return value;
	}
	public void setValue(String value) {
		this.value = value;
	}
	public String getColor() {
		return color;
	}
	public void setColor(String color) {
		this.color = color;
	}  
}

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