可以参考 官方文档：https://open-doc.dingtalk.com/docs/doc.htm?spm=a219a.7629140.0.0.karFPe&treeId=257&articleId=105735&docType=1

1.新建一个群。添加自定义机器人。获取自定义机器人webhook。

2.封装消息实体类。

packagecom.thinkgem.wlw.modules.midea.dingTalkTest;importcom.alibaba.fastjson.JSON;importcom.thinkgem.wlw.common.utils.StringUtils;importjava.util.HashMap;importjava.util.List;importjava.util.Map;/*** @Author: zhouhe

* @Date: 2019/6/20 17:25*/

public classTextMessage {privateString text;private ListatMobiles;private booleanisAtAll;publicTextMessage(String text) {this.text =text;

}publicString getText() {returntext;

}public voidsetText(String text) {this.text =text;

}public ListgetAtMobiles() {returnatMobiles;

}public void setAtMobiles(ListatMobiles) {this.atMobiles =atMobiles;

}public booleanisAtAll() {returnisAtAll;

}public void setIsAtAll(booleanisAtAll) {this.isAtAll =isAtAll;

}publicString toJsonString() {

Map items = newHashMap();

items.put("msgtype", "text");

Map textContent = newHashMap();if(StringUtils.isBlank(text)) {throw new IllegalArgumentException("text should not be blank");

}

textContent.put("content", text);

items.put("text", textContent);

Map atItems = newHashMap();if (atMobiles != null && !atMobiles.isEmpty()) {

atItems.put("atMobiles", atMobiles);

}if(isAtAll) {

atItems.put("isAtAll", isAtAll);

}

items.put("at", atItems);returnJSON.toJSONString(items);

}

}

3.封装发送消息结果实体类

packagecom.thinkgem.wlw.modules.midea.dingTalkTest;importcom.alibaba.fastjson.JSON;importjava.util.HashMap;importjava.util.Map;/*** @Author: zhouhe

* @Date: 2019/6/20 17:26*/

public classSendResult {private booleanisSuccess;privateInteger errorCode;privateString errorMsg;public booleanisSuccess() {returnisSuccess;

}public void setIsSuccess(booleanisSuccess) {this.isSuccess =isSuccess;

}publicInteger getErrorCode() {returnerrorCode;

}public voidsetErrorCode(Integer errorCode) {this.errorCode =errorCode;

}publicString getErrorMsg() {returnerrorMsg;

}public voidsetErrorMsg(String errorMsg) {this.errorMsg =errorMsg;

}

@OverridepublicString toString() {

Map items = new HashMap();

items.put("errorCode", errorCode);

items.put("errorMsg", errorMsg);

items.put("isSuccess", isSuccess);returnJSON.toJSONString(items);

}

}

4.发送消息通用类

packagecom.thinkgem.wlw.modules.midea.dingTalkTest;importcom.alibaba.fastjson.JSONObject;importorg.apache.http.HttpResponse;importorg.apache.http.HttpStatus;importorg.apache.http.client.HttpClient;importorg.apache.http.client.methods.HttpPost;importorg.apache.http.entity.StringEntity;importorg.apache.http.impl.client.HttpClients;importorg.apache.http.util.EntityUtils;importjava.io.IOException;/*** @Author: zhouhe

* @Date: 2019/6/20 17:26*/

public classRobotClient {public static SendResult send(String webhook, TextMessage message) throwsIOException {

HttpClient httpclient=HttpClients.createDefault();

HttpPost httppost= newHttpPost(webhook);

httppost.addHeader("Content-Type", "application/json; charset=utf-8");

StringEntity se= new StringEntity(message.toJsonString(), "utf-8");

httppost.setEntity(se);

SendResult sendResult= newSendResult();

HttpResponse response=httpclient.execute(httppost);if (response.getStatusLine().getStatusCode() ==HttpStatus.SC_OK) {

String result=EntityUtils.toString(response.getEntity());

JSONObject obj=JSONObject.parseObject(result);

Integer errcode= obj.getInteger("errcode");

sendResult.setErrorCode(errcode);

sendResult.setErrorMsg(obj.getString("errmsg"));

sendResult.setIsSuccess(errcode.equals(0));

}returnsendResult;

}

}

5.发送文本消息类

packagecom.thinkgem.wlw.modules.midea.dingTalkTest;importgroovy.util.logging.Slf4j;importjava.util.ArrayList;/*** @Author: zhouhe

* @Date: 2019/6/20 17:32*/@Slf4jpublic classSendTextMessage {//机器人消息token

public static String WEBHOOK_TOKEN = "https://oapi.dingtalk.com/robot/send?access_token=xxx";private static RobotClient robot = newRobotClient();/*** 发送普通文本消息

*

*@parammessage

*@return

*/

public staticSendResult send(String message) {

TextMessage textMessage= newTextMessage(message);

SendResult sendResult= null;try{

sendResult=robot.send(WEBHOOK_TOKEN, textMessage);

}catch(Exception e) {//log.error("===> send robot message error:", sendResult);

}returnsendResult;

}/*** 发送文本消息 可以@部分人

*

*@parammessage

*@paramatMobiles 要@人的电话号码 ArrayList

*@return

*/

public static SendResult sendWithAt(String message, ArrayListatMobiles) {

TextMessage textMessage= newTextMessage(message);

SendResult sendResult= null;

textMessage.setAtMobiles(atMobiles);try{

sendResult=robot.send(WEBHOOK_TOKEN, textMessage);

}catch(Exception e) {//log.error("===> send robot message atPeople error:", sendResult);

}returnsendResult;

}/*** 发送文本消息 并@所有人

*

*@parammessage

*@return

*/

public staticSendResult sendWithAtAll(String message) {

TextMessage textMessage= newTextMessage(message);

SendResult sendResult= null;

textMessage.setIsAtAll(false);try{

sendResult=robot.send(WEBHOOK_TOKEN, textMessage);

}catch(Exception e) {//log.error("===> send robot message atAll error:", sendResult);

}returnsendResult;

}

}

6.调用

packagecom.thinkgem.wlw.modules.midea.dingTalk;importcom.thinkgem.wlw.modules.midea.dingTalkTest.SendTextMessage;importjava.util.HashMap;importjava.util.Map;/*** @Author: zhouhe

* @Date: 2019/6/20 14:52*/

public classSendMessage {public static voidmain(String[] args){

SendTextMessage.sendWithAtAll("我是测试的！！！");

}

}

效果(钉钉消息)：

@Slf4j   maven依赖：

org.codehaus.groovy

groovy-all

2.4.5

注：如果钉钉机器人中设置了关键字，那么发送的消息内容必须包含关键字才行，否则发送不出去。详见钉钉开发文档