Java 钉钉群机器人消息通知

1. 钉钉群添加 Webhook 机器人，并拷贝 url 和 sign

2. pom.xml 引入

<dependency>
    <groupId>com.aliyun</groupId>
    <artifactId>dingtalk</artifactId>
    <version>1.3.23</version>
</dependency>
<!--钉钉旧版服务端SDK-->
<dependency>
    <groupId>com.aliyun</groupId>
    <artifactId>alibaba-dingtalk-service-sdk</artifactId>
    <version>2.0.0</version>
</dependency>

3. 代码

import com.dingtalk.api.DingTalkClient;
import com.dingtalk.api.request.OapiRobotSendRequest;
import com.dingtalk.api.response.OapiRobotSendResponse;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.codec.binary.Base64;

import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import java.net.URLEncoder;

/**
 * @author whm
 * @Description
 * @date 22/11/2022
 */
@Slf4j
public class DingDingUtils {

    public static final String DING_REBOT_URL = "https://oapi.dingtalk.com/robot/send?access_token=aaa";

    public static final String DING_REBOT_SIGN = "aaa";

    public void sendDingDing(String sendInfo) throws Exception {
        //https://oapi.dingtalk.com/robot/send?access_token=XXXXXX&timestamp=XXX&sign=XXX
        //如果创建机器人的时候选择了加密，就需要getSign(XXX) : xxx指的是加签的时候生成的字符串。另外可以点击 密钥如上，签名方法请参考 说明文档
        String sign = getSign(DING_REBOT_SIGN);
        String url = DING_REBOT_URL + sign;
        DingTalkClient client = new DefaultDingTalkClient(url);
        OapiRobotSendRequest request = new OapiRobotSendRequest();
        request.setMsgtype("text");
        OapiRobotSendRequest.Text text = new OapiRobotSendRequest.Text();
        text.setContent(sendInfo);
        request.setText(text);
        //就算不艾特某个人，也加上，setIsAtAll(false)
        OapiRobotSendRequest.At at = new OapiRobotSendRequest.At();
        // isAtAll类型如果不为Boolean，请升级至最新SDK
        at.setIsAtAll(false);
        request.setAt(at);
        OapiRobotSendResponse response = client.execute(request);
        log.error("response.getBody() === " + response.getBody());
    }

    public String getSign(String secret) throws Exception {
        Long timestamp = System.currentTimeMillis();
        String stringToSign = timestamp + "\n" + secret;
        Mac mac = Mac.getInstance("HmacSHA256");
        mac.init(new SecretKeySpec(secret.getBytes("UTF-8"), "HmacSHA256"));
        byte[] signData = mac.doFinal(stringToSign.getBytes("UTF-8"));
        String sign = URLEncoder.encode(new String(Base64.encodeBase64(signData)), "UTF-8");
        //https://oapi.dingtalk.com/robot/send?access_token=XXXXXX&timestamp=XXX&sign=XXX
        String signUrl = "&timestamp=" + timestamp + "&sign=" + sign;
        return signUrl;
    }

    public static void main(String[] args) throws Exception {

        DingDingUtils dingDingUtils = new DingDingUtils();
        dingDingUtils.sendDingDing("1234465");

    }
}