微信小程序——服务通知,发送订阅消息

一、什么是消息推送

二、整体效果

三、实现步骤

1 小程序开通订阅消息

2 postapi测试效果

三、uniapp配置

这里有个需要特别注意的点，我们要给用户发送消息，就必须引导用户授权，如下

因为用户不点击允许，你是没有办法给用户推送消息的。每一次授权只允许发送一条消息，所以如果你想尽量多的发送消息，就得尽量多的引导用户授权。

wx.requestSubscribeMessage这个方法，来获取用户的授权。
前端代码:

获取订阅消息授权//获取授权的点击事件getAuthority() {console.log("点击了")wx.requestSubscribeMessage({tmplIds: ['grwQUkOPAaJg-pzSZWeZawYTRFjmKmVPbkfckxWcPYQ'], //这里填入我们生成的模板idsuccess(res) {console.log('授权成功', res)wx.getUserInfo({  //成功后会返回  success:(res)=>{console.log(res);// 把你的用户信息存到一个变量中方便下面使用let userInfo= res.userInfo//获取openId（需要code来换取）这是用户的唯一标识符// 获取code值wx.login({  //成功放回  success:(res)=>{console.log("返回",res);let code=res.codeconsole.log("code",code);// 通过code换取openIdwx.request({  url: `https://api.weixin.qq.com/sns/jscode2session?appid=wxf85bf469c5f5d12b&secret=76a1479c2adc31ab8eeefd23a09d4410&js_code=${code}&grant_type=authorization_code`,  success:(res)=>{console.log(res);userInfo.openid=res.data.openidconsole.log("openid",userInfo.openid);  }})  }})  }})},fail(res) {console.log('授权失败', res)}})},

四、 后台整体编写

1、对应实体类
PushDTO.java

package com.soil.data.dto.push;import lombok.Data;import java.util.Map;@Datapublic class PushDTO {        private String touser;        private String template_id;        private String page = "pages/index/index";        private MiniprogramData miniprogram;        private String emphasisKeyWord = "keyword1.DATA";        private Map data;}

TemplateData.java

package com.soil.data.dto.push;import lombok.Data;@Datapublic class TemplateData {    private String value;    public TemplateData(String value) {        this.value = value;    }}

MiniprogramData.java

package com.soil.data.dto.push;import lombok.Data;@Datapublic class MiniprogramData {    private String appid;    private String pagepath;}

代码实现

package com.soil.biz.service.push;import com.alibaba.fastJSON.JSONObject;import com.soil.core.exception.AppServiceException;import com.soil.core.exception.ExceptionDefinition;import com.soil.core.util.DateUtils;import com.soil.core.util.Log;import com.soil.data.dto.push.MiniprogramData;import com.soil.data.dto.push.PushDTO;import com.soil.data.dto.push.TemplateData;import com.soil.data.enums.UserLoginType;import lombok.SneakyThrows;import okHttp3.OkHttpClient;import okhttp3.Request;import org.springframework.http.ResponseEntity;import org.springframework.stereotype.Service;import org.springframework.WEB.client.RestTemplate;import java.util.Date;import java.util.HashMap;import java.util.Map;@Servicepublic class PushBizService {    private OkHttpClient okHttpClient = new OkHttpClient();    public static final String WX_ACCESS_TOKEN = "https://api.weixin.qq.com/cgi-bin/token?grant_type={grant_type}&appid={appid}&secret={secret}";        @SneakyThrows    public ResponseEntity pushOneUser(PushDTO pushDTO) {        final String SEND_INFO_URL = "https://api.weixin.qq.com/cgi-bin/message/subscribe/send?access_token=";        RestTemplate restTemplate = new RestTemplate();        String appId = "wxf85bf469c5f5d12b";        String appSecret = "76a1479c2adc31ab8eeefd23a09d4410";        // 获取accessTokenJson        String accessTokenJson = getAccessTokenJSON(appId, appSecret);        // 获取accessToken        JSONObject jsonObject = JSONObject.parseObject(accessTokenJson);        String accessToken = jsonObject.getString("access_token");        // 获取过期时间        Long expiresTime = jsonObject.getLong("expires_in");        System.out.println(accessToken);        String url = SEND_INFO_URL + accessToken;        return restTemplate.postForEntity(url, pushDTO, String.class);    }        public static void main(String[] args) {        String openid = "o7TAS4zVL5D3IlVEnucI09FrCwjE";        String templateId = "grwQUkOPAaJg-pzSZWeZawYTRFjmKmVPbkfckxWcPYQ";        //拼接推送的模版        PushDTO pushDTO = new PushDTO();        //用户的openId        pushDTO.setTouser(openid);        pushDTO.setTemplate_id(templateId);        MiniprogramData miniprogram = new MiniprogramData();        pushDTO.setMiniprogram(miniprogram);        Map data = new HashMap<>();        data.put("thing9", new TemplateData("新婴儿奶瓶"));        data.put("character_string1", new TemplateData("11231323"));        data.put("amount24", new TemplateData("0.01"));        data.put("time21", new TemplateData("2023-02-16"));        pushDTO.setData(data);        System.out.println("发送的模板" + data);        Date date = new Date();        System.out.println(DateUtils.fORMat(date, DateUtils.DATE_TIME_PATTERN));        PushBizService pushBizService = new PushBizService();        ResponseEntity stringResponseEntity = pushBizService.pushOneUser(pushDTO);        System.out.println(stringResponseEntity);    }        private String getAccessTokenJSON(String appId, String appSecret) throws Exception {        String json = okHttpClient.newCall(                new Request.Builder().url("https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid="                        + appId + "&secret=" + appSecret).build())                .execute().body().string();        JSONObject jsonObject = JSONObject.parseObject(json);        Integer errcode = jsonObject.getInteger("errcode");        if (errcode == null || errcode == 0) {            return json;        } else {            Log.info("[微信 getAccessToken] 回复失败 回复报文：" + json);            throw new AppServiceException(ExceptionDefinition.THIRD_PART_SERVICE_EXCEPTION);        }    }}

来源地址：https://blog.csdn.net/weixin_44391817/article/details/127763984