java编写微信小程序消息提醒推送-编程学习网

一.先制定模板，我以已删除的模板为例

二.java后台创建小程序 Vo类，用于封装传送的参数。

import lombok.Data;@Datapublic class TemplateDataVo {         private String value;}

import lombok.Data;import java.util.Map;@Datapublic class WxMssVo {    private String touser;//用户openid    private String template_id;//模版id    private String page = "pages/index/index";//默认跳到小程序首页//    private String emphasis_keyword = "keyword1.DATA";//放大那个推送字段    private Map data;//推送文字}

获取小程序全局后台接口调用凭据，有效期最长为7200

      public String getAccess_token() {        //获取access_token        String appid = "*****";  //appid和appsecret到小程序后台获取        String appsecret = "*****";  //appid和appsecret到小程序后台获取        String url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential" +                "&appid=" + appid + "&secret=" + appsecret;        if(restTemplate==null){            restTemplate = new RestTemplate();        }        String json = restTemplate.getForObject(url, String.class);        JSONObject myJson = JSONObject.parseObject(json);        return myJson.get("access_token").toString();    }

发送消息给指定的用户

  public String pushOneUser(String access_token, String openid, String type, String templateId, String[] keywords) {        //如果access_token为空则从新获取        if(StringUtils.isEmpty(access_token)){            access_token = getAccess_token();        }        String url = "https://api.weixin.qq.com/cgi-bin/message/subscribe/send" +                "?access_token=" + access_token;        //拼接推送的模版        WxMssVo wxMssVo = new WxMssVo();        wxMssVo.setTouser(openid);//用户openid                wxMssVo.setTemplate_id(templateId);//模版id        Map m = new HashMap<>();        if (type.equals("3")) {            m.put("thing3", new TemplateDataVo(keywords[0]));            m.put("time1", new TemplateDataVo(keywords[1]));            m.put("thing4", new TemplateDataVo(keywords[2]));            wxMssVo.setData(m);        }        if(restTemplate==null){            restTemplate = new RestTemplate();        }        ResponseEntity responseEntity =                restTemplate.postForEntity(url, wxMssVo, String.class);        log.error("小程序推送结果={}", responseEntity.getBody());        return responseEntity.getBody();    }

整合

package com.ac.project.task.utils;import com.ac.project.task.service.impl.applet.WXServiceImpl;import com.ac.project.task.vo.TemplateDataVo;import com.ac.project.task.vo.WxMssVo;import com.alibaba.druid.util.StringUtils;import com.alibaba.fastjson2.JSONObject;import lombok.extern.slf4j.Slf4j;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.http.ResponseEntity;import org.springframework.web.client.RestTemplate;import java.io.UnsupportedEncodingException;import java.net.URLEncoder;import java.util.HashMap;import java.util.Map;@Slf4jpublic class weChatUtil {    private static RestTemplate restTemplate;    final Boolean flag = false;        public static String getUserUathUrl(String appid, String redirectUrl) throws UnsupportedEncodingException {        StringBuffer getcodeUrl = new StringBuffer()                .append("https://open.weixin.qq.com/connect/oauth2/authorize")                .append("?appid=" + appid)                .append("&redirect_uri=" + URLEncoder.encode(redirectUrl, "utf-8"))                .append("&response_type=code")                .append("&scope=snsapi_userinfo")                .append("&state=" + System.currentTimeMillis())                .append("#wechat_redirect");        return getcodeUrl.toString();    }        public static String getBaseAccessTokenUrl(String appid, String appSecret, String code) throws UnsupportedEncodingException {        StringBuffer baseAccessTokenUrl = new StringBuffer()                .append("https://api.weixin.qq.com/sns/oauth2/access_token")                .append("?appid=" + appid)                .append("&secret=" + appSecret)                .append("&code=" + code)                .append("&grant_type=authorization_code");        return baseAccessTokenUrl.toString();    }        public static String getBaseUserInfoUrl(String accessToken, String openid) {        StringBuffer baseUserInfoUrl = new StringBuffer()                .append("https://api.weixin.qq.com/sns/userinfo")                .append("?access_token=" + accessToken)                .append("&openid=" + openid)                .append("&lang=zh_CN");        return baseUserInfoUrl.toString();    }        public static String checkAccessToken(String openid, String accessToken) {        StringBuffer stringBuffer = new StringBuffer().append(" https://api.weixin.qq.com/sns/auth")                .append("?access_token=" + accessToken)                .append("&openid=" + openid);        return stringBuffer.toString();    }        public static String getCode2Session(String appid, String secret, String code) {        StringBuffer code2Session = new StringBuffer()                .append("ttps://api.weixin.qq.com/sns/jscode2session")                .append("?appid=" + appid)                .append("&secret=" + secret)                .append("&js_code=" + code)                .append("&grant_type=authorization_code");        return code2Session.toString();    }        public String pushOneUser(String access_token, String openid, String type, String templateId, String[] keywords) {        //如果access_token为空则从新获取        if(StringUtils.isEmpty(access_token)){            access_token = getAccess_token();        }        String url = "https://api.weixin.qq.com/cgi-bin/message/subscribe/send" +                "?access_token=" + access_token;        //拼接推送的模版        WxMssVo wxMssVo = new WxMssVo();        wxMssVo.setTouser(openid);//用户openid                wxMssVo.setTemplate_id(templateId);//模版id        Map m = new HashMap<>();        if (type.equals("3")) {            m.put("thing3", new TemplateDataVo(keywords[0]));            m.put("time1", new TemplateDataVo(keywords[1]));            m.put("thing4", new TemplateDataVo(keywords[2]));            wxMssVo.setData(m);        } else if (type.equals("1")) {                    m.put("thing12",new TemplateDataVo(keywords[0]));            m.put("date3",new TemplateDataVo(keywords[1]));            m.put("thing4",new TemplateDataVo(keywords[2]));            m.put("thing6",new TemplateDataVo(keywords[3]));            m.put("time9",new TemplateDataVo(keywords[4]));        }else if (type.equals("2")){                    }        if(restTemplate==null){            restTemplate = new RestTemplate();        }        ResponseEntity responseEntity =                restTemplate.postForEntity(url, wxMssVo, String.class);        log.error("小程序推送结果={}", responseEntity.getBody());        return responseEntity.getBody();    }        public String getAccess_token() {        //获取access_token        String appid = "";        String appsecret = "";        String url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential" +                "&appid=" + appid + "&secret=" + appsecret;        if(restTemplate==null){            restTemplate = new RestTemplate();        }        String json = restTemplate.getForObject(url, String.class);        JSONObject myJson = JSONObject.parseObject(json);        return myJson.get("access_token").toString();    }    public static void main(String[] args) {        System.out.println(new WXServiceImpl().getAccess_token());        WXServiceImpl wxService = new WXServiceImpl();        String values[] = {"zzh7878","2023年5月8日 15:01","ceshi"};        wxService.pushOneUser(wxService.getAccess_token()                , "oM47R5KO0kFhsScuitgSJSjiN0s", "3", "QhJq4RvU7qGyf7FY_ZFc1sHJCTD8VkFvtHEx8uHwY4"                , values);    }}

测试

注意：在前端调用方法时，只有发生点击行为或者支付行为才会出现订阅栏

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