Java进行微信公众号推送模板消息

用户1750537

发布于 2025-08-29 17:06:18

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代码可运行

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代码可运行

使用Java进行微信公众号推送模板消息，使用微信开放平台的API。

首先，您需要获取微信公众号的access_token，使用以下代码：

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

public class AccessTokenUtil {
    public static String getAccessToken(String appId, String appSecret) {
        String accessToken = null;
        String url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" + appId + "&secret=" + appSecret;

        try {
            URL obj = new URL(url);
            HttpURLConnection con = (HttpURLConnection)obj.openConnection();
            con.setRequestMethod("GET");

            int responseCode = con.getResponseCode();
            if (responseCode == HttpURLConnection.HTTP_OK) {
                BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
                String inputLine;
                StringBuffer response = new StringBuffer();

                while ((inputLine = in.readLine()) != null) {
                    response.append(inputLine);
                }
                in.close();

                JSONObject jsonObject = new JSONObject(response.toString());
                accessToken = jsonObject.getString("access_token");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }

        return accessToken;
    }
}

然后，您可以使用以下代码向用户发送模板消息：

import net.sf.json.JSONObject;

public class TemplateMessageUtil {
    public static void sendTemplateMessage(String accessToken, String openId, String templateId, String url, JSONObject data) {
        String apiUrl = "https://api.weixin.qq.com/cgi-bin/message/template/send?access_token=" + accessToken;

        try {
            URL obj = new URL(apiUrl);
            HttpURLConnection con = (HttpURLConnection)obj.openConnection();
            con.setRequestMethod("POST");
            con.setRequestProperty("Content-Type", "application/json");
            con.setDoOutput(true);

            JSONObject jsonBody = new JSONObject();
            jsonBody.put("touser", openId);
            jsonBody.put("template_id", templateId);
            jsonBody.put("url", url);
            jsonBody.put("data", data);

            OutputStreamWriter out = new OutputStreamWriter(con.getOutputStream());
            out.write(jsonBody.toString());
            out.close();

            int responseCode = con.getResponseCode();
            if (responseCode == HttpURLConnection.HTTP_OK) {
                BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
                String inputLine;
                StringBuffer response = new StringBuffer();

                while ((inputLine = in.readLine()) != null) {
                    response.append(inputLine);
                }
                in.close();

                JSONObject jsonObject = new JSONObject(response.toString());
                int errorCode = jsonObject.getInt("errcode");
                if (errorCode == 0) {
                    System.out.println("Template message sent successfully.");
                } else {
                    System.out.println("Failed to send template message. Error code: " + errorCode);
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

使用时，您需要提供正确的appId、appSecret、accessToken、openId、templateId、url和data。data是一个包含模板消息内容的JSONObject对象。

请注意，以上代码只是一个简单的示例，您可能还需要处理异常等情况。

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原始发表：2025-08-28，如有侵权请联系 cloudcommunity@tencent.com 删除

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