微信小程序开发发送模板信息

叁歲伎倆 2023-09-30 10:24 10阅读 0赞

之前的文档找不到了，参考这个  
[官方文档][Link 1] 必看  
![在这里插入图片描述][watermark_type_d3F5LXplbmhlaQ_shadow_50_text_Q1NETiBA5Luj56CB5Yyq5b6S_size_20_color_FFFFFF_t_70_g_se_x_16]

**下面是主要的代码实现：**  
**采用hutool工具包发http请求**  
依赖：

<dependency>
                <groupId>cn.hutool</groupId>
                <artifactId>hutool-all</artifactId>
                <version>5.7.16</version>
            </dependency>

**yaml文件中配置**

#微信支付
    wechat-payment:
      #微信小程序设置
      wechat-mini-app:
        #微信小程序APP ID
        app-id: "xxx"
        #微信小程序APP SECRET
        app-secret: "xxx"

代码：

**实体类：**

@Data
    @AllArgsConstructor
    @NoArgsConstructor
    public class CommonResult<T> {
        
    
        /**
         * 是否成功
         */
        Boolean isSuccess;
    
        /**
         * 信息
         */
        String message;
    
        /**
         * 数据
         */
        T data;
    
    }

@Data
    @AllArgsConstructor
    @NoArgsConstructor
    public class WechatMessageData {
        
    
        /**
         * 要下发的模板ID
         */
        String templateId;
    
        /**
         * 要发送的用户的OpenId
         */
        List<String> userOpenIdList;
    
        /**
         * 关键词列表
         */
        Map<String,String> keywordsMap;
    }

import cn.hutool.core.date.DateUnit;
    import cn.hutool.core.date.DateUtil;
    import cn.hutool.http.HttpUtil;
    import com.alibaba.fastjson.JSON;
    import com.alibaba.fastjson.JSONObject;
    import lombok.extern.slf4j.Slf4j;
    import org.sdyspx.stateartexam.manage.pojo.CommonResult;
    import org.sdyspx.stateartexam.manage.pojo.WechatMessageData;
    import org.springframework.beans.factory.annotation.Value;
    import org.springframework.web.bind.annotation.PostMapping;
    import org.springframework.web.bind.annotation.RequestBody;
    import org.springframework.web.bind.annotation.RestController;
    
    import java.util.Date;
    import java.util.Map;
    
    @Slf4j
    @RestController
    public class MessageController {
        
        /**
         * 微信支付小程序APP ID
         */
        @Value("${wechat-payment.wechat-mini-app.app-id}")
        String WECHAT_MINI_APP_APP_ID;
    
        /**
         * 微信支付小程序APP SECRET
         */
        @Value("${wechat-payment.wechat-mini-app.app-secret}")
        String WECHAT_MINI_APP_APP_SECRET;
    
        /**
         * 微信AccessToken过期时间
         */
        Integer WECHAT_ACCESS_TOKEN_EXPIRE_SECOND = 7000;
    
        /**
         * 微信AccessToken
         */
        String wechatAccessToken;
    
        /**
         * 微信AccessToken生成时间
         */
        Date wechatAccessTokenRequestTime = new Date();
    
        @PostMapping("/message/sendWechatMessage")
        public CommonResult<Boolean> sendWechatMessage(@RequestBody WechatMessageData wechatMessageData) {
        
            //关键词列表
            Map<String, String> keywordsMap = wechatMessageData.getKeywordsMap();
    
            //构建数据
            JSONObject elementData = new JSONObject();
            //构建
            keywordsMap.forEach((key, value) -> {
        
                JSONObject keywordsValue = new JSONObject();
                keywordsValue.put("value", value);
                elementData.put(key, keywordsValue);
            });
    
            //获取微信AccessToken
            String accessToken = getAccessToken();
            if (accessToken == null) {
        
                return new CommonResult<>(false, "无法获取accessToken", false);
            }
    
            //群发数据
            for (String userOpenID : wechatMessageData.getUserOpenIdList()) {
        
                JSONObject messageData = new JSONObject();
                messageData.put("touser", userOpenID);
                messageData.put("template_id", wechatMessageData.getTemplateId());
                messageData.put("data", elementData);
    
                String result = HttpUtil.post("https://api.weixin.qq.com/cgi-bin/message/subscribe/send?access_token=" + accessToken, messageData.toJSONString());
                log.info(result);
            }
    
            return new CommonResult<>(true, "成功", true);
        }
    
        /**
         * @return 获取AccessToken
         */
        private String getAccessToken() {
        
            //初始化情况
            Date currentData = new Date();
            //比较时间大小
            long betweenSeconds = DateUtil.between(wechatAccessTokenRequestTime, currentData, DateUnit.SECOND);
    
            if (wechatAccessToken == null || betweenSeconds > WECHAT_ACCESS_TOKEN_EXPIRE_SECOND) {
        
                //更新AccessToken
                updateAccessToken();
                //更新获取时间
                wechatAccessTokenRequestTime = new Date();
            }
    
            return wechatAccessToken;
        }
    
        /**
         * 更新AccessToken
         */
        private void updateAccessToken() {
        
            JSONObject jsonObject = new JSONObject();
            try {
        
                String result = HttpUtil.get("https://api.weixin.qq.com/cgi-bin/token" +
                        "?grant_type=client_credential" +
                        "&appid=" + WECHAT_MINI_APP_APP_ID
                        + "&secret=" + WECHAT_MINI_APP_APP_SECRET);
    
                jsonObject = JSON.parseObject(result);
                wechatAccessToken = jsonObject.getString("access_token");
            } catch (Exception exception) {
        
                exception.printStackTrace();
            }
        }
    }

[Link 1]: https://developers.weixin.qq.com/doc/offiaccount/Subscription_Messages/api.html#send%E5%8F%91%E9%80%81%E8%AE%A2%E9%98%85%E9%80%9A%E7%9F%A5
[watermark_type_d3F5LXplbmhlaQ_shadow_50_text_Q1NETiBA5Luj56CB5Yyq5b6S_size_20_color_FFFFFF_t_70_g_se_x_16]: https://img-blog.csdnimg.cn/59d1ce1bc10548ef86bbbd11c7109253.png?x-oss-process=image/watermark,type_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBA5Luj56CB5Yyq5b6S,size_20,color_FFFFFF,t_70,g_se,x_16