使用java实现小程序发送订阅消息

╰半夏微凉° 2023-09-25 21:45 90阅读 0赞

### 需要导入的包 ###

<dependency>
                <groupId>com.squareup.okhttp3</groupId>
                <artifactId>okhttp</artifactId>
                <version>4.9.1</version>
            </dependency>
    
    
      <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>fastjson</artifactId>
                <version>1.2.15</version>
            </dependency>

### 下面是实现代码 ###

import com.alibaba.fastjson.JSONObject;
    import okhttp3.OkHttpClient;
    import okhttp3.Request;
    import okhttp3.RequestBody;
    import okhttp3.Response;
    import java.io.IOException;
    import java.util.HashMap;
    import java.util.Map;
    
    public class SubscribeMessageDemo {
        //修改为你的小程序对应的相关信息
        private final static String APPID = "your_appid";
        private final static String APP_SECRET = "your_appsecret";
        //请求access_token的接口地址
        private final static String ACCESS_TOKEN_API = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid="+APPID+"&secret="+APP_SECRET;
        //发送订阅消息的接口地址
        private final static String SEND_SUBSCRIBE_MESSAGE_API = "https://api.weixin.qq.com/cgi-bin/message/subscribe/send?access_token=";
    
        public static void main(String[] args) {
            OkHttpClient client = new OkHttpClient();
            try {
                //1.获取access_token
                String accessToken = getAccessToken(client);
    
                //2.发送订阅消息
                String result = sendSubscribeMessage(client, accessToken);
                System.out.println(result);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        //获取access_token
        private static String getAccessToken(OkHttpClient client) throws IOException {
            Request request = new Request.Builder()
                    .url(ACCESS_TOKEN_API)
                    .build();
            Response response = client.newCall(request).execute();
            if (response.isSuccessful()) {
                JSONObject jsonObject = JSONObject.parseObject(response.body().string());
                String accessToken = jsonObject.getString("access_token");
                return accessToken;
            }
            return null;
        }
        //发送订阅消息
        private static String sendSubscribeMessage(OkHttpClient client, String accessToken) throws IOException {
            String url = SEND_SUBSCRIBE_MESSAGE_API + accessToken;
    
            //构造发送给用户的订阅消息内容
            Map<String, Object> messageContent = new HashMap<>();
            messageContent.put("thing1", new HashMap<String, Object>(){
       {put("value", "预定成功");}});
            messageContent.put("thing2", new HashMap<String, Object>(){
       {put("value", "2023-04-04 16:29:49");}});
            JSONObject messageContentJson = new JSONObject(messageContent);
    
            //构造订阅消息
            Map<String, Object> subscribeMessage = new HashMap<>();
            subscribeMessage.put("touser", "openid");//填写你的接收者openid
            subscribeMessage.put("template_id", "your_template_id");//填写你的模板ID
            subscribeMessage.put("data", messageContentJson);
            JSONObject subscribeMessageJson = new JSONObject(subscribeMessage);
    
            RequestBody requestBody = RequestBody.create(subscribeMessageJson.toJSONString(), okhttp3.MediaType.parse("application/json; charset=utf-8"));
    
            Request request = new Request.Builder()
                    .url(url)
                    .post(requestBody)
                    .build();
            Response response = client.newCall(request).execute();
            if (response.isSuccessful()) {
                return response.body().string();
            }
            return null;
        }
    }

#### json参数的格式请参考微信官方文档[发送订阅消息 | 微信开放文档][Link 1] ####

[Link 1]: https://developers.weixin.qq.com/miniprogram/dev/OpenApiDoc/mp-message-management/subscribe-message/sendMessage.html