Java微信公众号推送模版消息的方法示例 - ToB企服应用市场:ToB评测及商务社交产业平台

import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
public class WeChatUtil {
private static final String APP_ID = "我们的AppID";
private static final String APP_SECRET = "我们的AppSecret";
private static final String TOKEN_URL = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={}&secret={}";
public static String getAccessToken() throws Exception {
String url = TOKEN_URL.replace("{}", APP_ID).replace("{}", APP_SECRET);
HttpGet request = new HttpGet(url);
CloseableHttpClient httpClient = HttpClients.createDefault();
String result = httpClient.execute(request, httpResponse ->
EntityUtils.toString(httpResponse.getEntity()));
// 解析JSON获取access_token，这里假设已经通过某种方式（如Jackson, Gson）解析
// 这里简单用String.split()模拟解析
String[] parts = result.split(",");
for (String part : parts) {
if (part.contains("access_token")) {
String[] tokenParts = part.split(":");
return tokenParts[1].trim().replace(""", "");
}
}
return null;
}
}

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import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.message.BasicHeader;
import org.apache.http.util.EntityUtils;
public class TemplateMessageSender {
public static void sendTemplateMessage(String accessToken, String toUserOpenId, String templateId, String url, Map<String, TemplateData> data) throws Exception {
String json = "{"touser":"" + toUserOpenId + "","template_id":"" + templateId + "","url":"" + url + "","data":{";
for (Map.Entry<String, TemplateData> entry : data.entrySet()) {
json += """ + entry.getKey() + "":{"value":"" + entry.getValue().getValue() + "","color":"" + entry.getValue().getColor() + ""},";
}
if (!json.endsWith(",")) {
json = json.substring(0, json.length() - 1);
}
json += "}}";
String messageUrl = "https://api.weixin.qq.com/cgi-bin/message/template/send?access_token=" + accessToken;
HttpPost request = new HttpPost(messageUrl);
request.setHeader(new BasicHeader("Content-Type", "application/json; charset=UTF-8"));
request.setEntity(new StringEntity(json, "UTF-8"));
CloseableHttpClient httpClient = HttpClients.createDefault();
String result = httpClient.execute(request, httpResponse ->
EntityUtils.toString(httpResponse.getEntity()));
System.out.println("发送结果: " + result);
}
static class TemplateData {
private String value;
private String color;
// 构造器、getter和setter省略
}
}

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import java.util.HashMap;
import java.util.Map;
public class WeChatTemplateMessageExample {
public static void main(String[] args) {
try {
// 获取access_token
String accessToken = WeChatUtil.getAccessToken();
if (accessToken == null) {
System.out.println("获取access_token失败");
return;
}
// 准备模板消息数据
Map<String, TemplateMessageSender.TemplateData> data = new HashMap<>();
data.put("first", new TemplateMessageSender.TemplateData("这是第一条消息", "#173177"));
data.put("keyword1", new TemplateMessageSender.TemplateData("这是关键词1的内容", "#173177"));
data.put("keyword2", new TemplateMessageSender.TemplateData("这是关键词2的内容", "#173177"));
data.put("remark", new TemplateMessageSender.TemplateData("这是备注信息", "#173177"));
// 发送模板消息
String toUserOpenId = "用户的OpenID";
String templateId = "我们的模板ID";
String url = "点击后跳转的链接";
TemplateMessageSender.sendTemplateMessage(accessToken, toUserOpenId, templateId, url, data);
System.out.println("模板消息发送成功");
} catch (Exception e) {
e.printStackTrace();
System.out.println("发送模板消息失败：" + e.getMessage());
}
}
}

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