利用钉钉机器人发送群消息

首先添加自定义机器人，会获得一个链接：

https://oapi.dingtalk.com/robot/send?access_token=xxxxxxxxxxxxxxx

其中后面access_token是固定

import com.alibaba.fastjson.JSONObject;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;

import java.time.LocalDate;

@Service
public class DingdingTest {


    private String DING_TALK_SERVER_URL="https://oapi.dingtalk.com/robot/send?access_token=xxxxxxxxxxxxxx";


    public void sendRobotMsg(String msg) {
        StringBuffer msgBuffer = new StringBuffer();
        msgBuffer.append(msg).append("[").append(LocalDate.now().toString()).append("]");
        HttpClient httpclient = HttpClients.createDefault();
        HttpPost httppost = new HttpPost(DING_TALK_SERVER_URL);
        httppost.addHeader("Content-Type", "application/json; charset=utf-8");
        JSONObject jsonParam = new JSONObject();
        jsonParam.put("msgtype", "text");
        JSONObject jsonParamContent = new JSONObject();
        jsonParamContent.put("content", msgBuffer);
        jsonParam.put("text", jsonParamContent);
        String textMsg = jsonParam.toString();
        StringEntity se = new StringEntity(textMsg, "utf-8");
        httppost.setEntity(se);
        HttpResponse response = null;
        try {
            response = httpclient.execute(httppost);
            if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
                String result = EntityUtils.toString(response.getEntity(), "utf-8");

            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }



}