微信前端代码如何订阅消息可以阅读我上一篇文章介绍的:【微信小程序,用户订阅消息,判断订阅消息是否已经订阅-CSDN博客】
本文接着介绍后端服务如果发送订阅消息给用户。以springboot代码为例,注意替换代码中的
templateId、APPID、APPSECRET这几个值为你自已小程序和消息模板的值,还用替换用户的openId。
package io.neter.sheduleservice.model.vo;
import java.util.Map;
public class WxMssVo {
private String touser;//用户openid
private String template_id;//订阅消息模版id
private String page = "pages/index/index";//默认跳到小程序首页
private Map<String, TemplateData> data;//推送文字
public String getTouser() {
return touser;
}
public void setTouser(String touser) {
this.touser = touser;
}
public String getTemplate_id() {
return template_id;
}
public void setTemplate_id(String template_id) {
this.template_id = template_id;
}
public String getPage() {
return page;
}
public void setPage(String page) {
this.page = page;
}
public Map<String, TemplateData> getData() {
return data;
}
public void setData(Map<String, TemplateData> data) {
this.data = data;
}
}
package io.neter.sheduleservice.model.vo;
public class TemplateData {
private String value;//
public TemplateData(String value) {
this.value = value;
}
public String getValue() {
return value;
}
public void setValue(String value) {
this.value = value;
}
}
package io.neter.sheduleservice.controller;
import com.alibaba.fastjson2.JSON;
import com.alibaba.fastjson2.JSONObject;
import io.github.nnkwrik.sheduleservice.model.vo.TemplateData;
import io.github.nnkwrik.sheduleservice.model.vo.WxMssVo;
import lombok.extern.slf4j.Slf4j;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.client.RestTemplate;
import java.util.HashMap;
import java.util.Map;
/**
* @author neter
*/
@Slf4j
@RestController
@RequestMapping("/sendMessage")
public class SendWxMessageController {
private String templateId = "LGpkXsQ396xxxxxxxxxxxxxz0pYoQego";
private String APPID = "wx8baxxxxx85c";
private String APPSECRET = "b0d016xxxxxxxxxx3859a0f7";
/*
* 发送订阅消息
* */
@GetMapping("/pushOneUser")
public String pushOneUser() {
String openId="o7kjXxxxxxxxxxxxxeHbVe88";
return push(openId);//这里改成用户的openId
}
public String push(String openid) {
RestTemplate restTemplate = new RestTemplate();
//这里简单起见我们每次都获取最新的access_token(时间开发中,应该在access_token快过期时再重新获取)
String url = "https://api.weixin.qq.com/cgi-bin/message/subscribe/send?access_token=" + getAccessToken();
//拼接推送的模版
WxMssVo wxMssVo = new WxMssVo();
wxMssVo.setTouser(openid);//用户的openid(要发送给那个用户,通常这里应该动态传进来的)
wxMssVo.setTemplate_id(templateId);//订阅消息模板id
wxMssVo.setPage("pages/index/index");
Map<String, TemplateData> m = new HashMap<>(3);
m.put("time4", new TemplateData("2021年05月05日 08:30"));
m.put("thing8", new TemplateData("白班"));
m.put("time12", new TemplateData("8:00~16:00"));
m.put("thing10", new TemplateData("配工排班通知,请点击查看详情进行确认"));
wxMssVo.setData(m);
ResponseEntity<String> responseEntity =
restTemplate.postForEntity(url, wxMssVo, String.class);
return responseEntity.getBody();
}
@GetMapping("/getAccessToken")
public String getAccessToken() {
RestTemplate restTemplate = new RestTemplate();
Map<String, String> params = new HashMap<>();
params.put("APPID", APPID); //
params.put("APPSECRET", APPSECRET); //
ResponseEntity<String> responseEntity = restTemplate.getForEntity(
"https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={APPID}&secret={APPSECRET}", String.class, params);
String body = responseEntity.getBody();
JSONObject object = JSON.parseObject(body);
String Access_Token = object.getString("access_token");
String expires_in = object.getString("expires_in");
System.out.println("有效时长expires_in:" + expires_in);
return Access_Token;
}
}
调用一下请求/sendMessage/pushOneUser即可发送消息。
结尾:样例小程序二维码,自己做的一个免费好用的排班小程序