DingTalk-通讯录单向同步实现示例

最近项目中需要实现对接钉钉,并实现单向通讯录同步(钉钉服务器 -> 对接平台)本文通过一个简单的案例快速实现相关的DEMO (本文主要实现与钉钉对接)。

钉钉API:https://open-doc.dingtalk.com/docs/doc.htm?spm=a219a.7629140.0.0.LucpAu&treeId=385&articleId=104975&docType=1#s7

流程示意图


准备工作

在使用回调接口前,需要做以下准备工作:

  1. 提供一个接收消息的RESTful接口。
  2. 调用钉钉API,主动注册回调通知。
  3. 因为涉及到消息的加密解密,默认的JDK存在一些限制,先要替换相关jar:

在官方网站下载JCE无限制权限策略文件

JDK6的下载地址:http://www.oracle.com/technetwork/java/javase/downloads/jce-6-download-429243.html

JDK7的下载地址:http://www.oracle.com/technetwork/java/javase/downloads/jce-7-download-432124.html

JDK8的下载地址:http://www.oracle.com/technetwork/java/javase/downloads/jce8-download-2133166.html

下载后解压,可以看到local_policy.jar和US_export_policy.jar以及readme.txt。

如果安装的是JRE,将两个jar文件放到%JRE_HOME% \lib\security目录下覆盖原来的文件,

如果安装的是JDK,将两个jar文件放到%JDK_HOME%\jre\lib\security目录下覆盖原来文件。

  1. 内网穿透映射本地RESTful接口到公网,推荐使用Ngrok: http://ngrok.ciqiuwl.cn/

具体实现

提供回调接口

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package com.wuwenze.dingtalk.rest;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.mzlion.core.lang.Assert;
import com.wuwenze.dingtalk.api.DingTalkConst;
import com.wuwenze.dingtalk.encrpty.DingTalkEncryptor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;

import java.io.Serializable;
import java.util.Map;

/**
* @author wwz
* @version 1 (2018/7/26)
* @since Java7
*/
@Slf4j
@RestController
public class DingTalkCallbackRest {

@PostMapping("/dingtalk/receive")
public Map<String, ? extends Serializable> receive(//
String signature, String timestamp, String nonce,@RequestBody String requestBody) {
Assert.notNull(signature, "signature is null.");
Assert.notNull(timestamp, "timestamp is null.");
Assert.notNull(nonce, "nonce is null.");
Assert.notNull(requestBody, "requestBody is null.");

log.info("#receive 接收密文:{}", requestBody);
DingTalkEncryptor dingTalkEncryptor = new DingTalkEncryptor(//
DingTalkConst.CALLBACK_TOKEN, DingTalkConst.CALLBACK_AES_KEY, DingTalkConst.CORP_ID);
JSONObject jsonEncrypt = JSON.parseObject(requestBody);
String encryptMessage = dingTalkEncryptor.getDecryptMsg(signature, timestamp, nonce, jsonEncrypt.getString("encrypt"));
log.info("#receive 密文解密后:{}", encryptMessage);

// TODO: 异步处理报文,解析相关信息

// 返回加密后的success (快速响应)
return dingTalkEncryptor.getEncryptedMsg("success", Long.parseLong(timestamp), nonce);
}
}

接口写好之后,还需要将接口暴露在公网,如此钉钉服务器才能进行调用,下为内网穿透示意图:

钉钉为我们开发者提供了一个Ngrok服务,在https://github.com/open-dingtalk/pierced.git,按照操作文章指引配置即可。

我在这边使用的是其他的Ngrok服务,官网地址是http://ngrok.ciqiuwl.cn/,配置后启动如下图所示:



将本地的http://127.0.0.1:8080映射到http://wuwz.ngrok.xiaomiqiu.cn,最终提供给钉钉的回调接口地址即为:http://wuwz.ngrok.xiaomiqiu.cn/dingtalk/receive

以上准备工作完后成,就可以将接口启动起来,继续后续的操作。

主动注册回调接口

写一个测试方法,将http://wuwz.ngrok.xiaomiqiu.cn/dingtalk/receive注册到钉钉,后续钉钉相关的消息都会推送到此处。

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package com.wuwenze.dingtalk;

import com.wuwenze.dingtalk.api.DingTalkApi;
import com.wuwenze.dingtalk.api.DingTalkConst;
import com.wuwenze.dingtalk.enums.DingTalkCallbackTag;

/**
* @author wwz
* @version 1 (2018/7/27)
* @since Java7
*/
public class TestRegisterCallback {

public static void main(String[] args) {
// 获取Token
String accessToken = DingTalkApi.getAccessTokenCache();

// 先删除之前注册的回调接口
DingTalkApi.removeCallback(accessToken);

// 注册新的回调接口
String callbackToken = DingTalkConst.CALLBACK_TOKEN;
String callbackAesKey = DingTalkConst.CALLBACK_AES_KEY;
String callbackUrl = "http://wuwz.ngrok.xiaomiqiu.cn/dingtalk/receive";
DingTalkCallbackTag[] callbackTags = {
DingTalkCallbackTag.USER_ADD_ORG, // 增加用户
DingTalkCallbackTag.USER_MODIFY_ORG, // 修改用户
DingTalkCallbackTag.USER_LEAVE_ORG // 用户离职
};
DingTalkApi.registerCallback(accessToken, callbackToken, callbackAesKey, callbackUrl, callbackTags);
}
}

执行代码,如果一切不出意外的话,就注册成功了(注册的过程中需保证callbackUrl可以正常访问,因为首次会向该接口发送一条check_url事件,验证其合法性)

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// 获取Token
13:44:41.342 [main] INFO com.wuwenze.dingtalk.api.DingTalkApi - {"access_token":"9990578f789c3fb1a9d974c268df5029","errcode":0.0,"errmsg":"ok","expires_in":7200.0}
// 先删除之前注册的回调接口
13:44:41.438 [main] INFO com.wuwenze.dingtalk.api.DingTalkApi - {"errcode":0.0,"errmsg":"ok"}
// 注册新的回调接口
13:44:41.888 [main] INFO com.wuwenze.dingtalk.api.DingTalkApi - {"errcode":0.0,"errmsg":"ok"}
13:44:41.893 [main] INFO com.wuwenze.dingtalk.api.DingTalkApi - #registerCallback 注册回调接口 -> url: http://wuwz.ngrok.xiaomiqiu.cn/dingtalk/receive, tags: tag: user_add_org, describe: 通讯录用户增加 + tag: user_modify_org, describe: 通讯录用户更改 + tag: user_leave_org, describe: 通讯录用户离职

另外再来观察一下回调接口是否收到checkUrL消息:

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2018-07-27 13:44:41.823  INFO 2392 --- [nio-8080-exec-1] c.w.dingtalk.rest.DingTalkCallbackRest   : #receive 接收密文:{"encrypt":"JfRo/wn+E1agXgk1uN5UQP/WDv0RvWnw8TgXC/ucatBxYm54OSUcGn5uTGCVMaGIN6Lv24ZOujH/uixB39AKxjXWgzdJQ1Eq4HD0EIJFG+QY8mjcCltvhX0QfhisFlll"}
2018-07-27 13:44:41.823 INFO 2392 --- [nio-8080-exec-1] c.w.dingtalk.rest.DingTalkCallbackRest : #receive 密文解密后:{"EventType":"check_url"}

测试注册的通讯录事件

在上一步中,注册了USER_ADD_ORG (增加用户)、USER_MODIFY_ORG (修改用户)、USER_LEAVE_ORG (用户离职|删除)三个事件

打开钉钉后台管理,在通讯录中新增一个用户:



保存成功后,在回调接口中则马上收到了该事件的通知消息:

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2018-07-27 13:49:55.985  INFO 2392 --- [nio-8080-exec-3] c.w.dingtalk.rest.DingTalkCallbackRest   : #receive 接收密文:{"encrypt":"g6RsagVKTVUS2Gg7B1JSn81uJPgCpPKoaRN4kps4cMpp6CuqW1QahaDP8TcnwDP2fYyG0gwLFvF5cOWbn+lKX2kq4UYe5m08BB/FWw8lALV/4LYu7RI6OARCFDTsllBTs4W6/OUv+9AyYlWGmwK2ZYnXoFyiK4DqFt6jenp45NCXwvSgssjn8RsD/3E7kfw5DL/mfr4L3hkaBysmkU2ohaFFEqBO1r63cj+mONLsD8Dvr2lAsefBoMdZ2JV5sIIePuKhz08G6KnJDvkAqcm59naV6AIbDLouWrBK7upCP7Q="}
2018-07-27 13:49:55.985 INFO 2392 --- [nio-8080-exec-3] c.w.dingtalk.rest.DingTalkCallbackRest : #receive 密文解密后:{"TimeStamp":"1532670599144","CorpId":"dingb9875d6606f892ed35c2f4657eb6378f","UserId":["202844352662984130"],"EventType":"user_add_org"}

后续同步逻辑

在上面的例子中新增用户后,收到的报文解密后的信息为只包含事件类型和用户ID,所以后面还需要主动调用钉钉获取用户详情的接口,再做具体的同步逻辑,这里就不再往下写了,贴一下相关的API接口吧:

https://open-doc.dingtalk.com/docs/doc.htm?spm=a219a.7629140.0.0.Y7lQU8&treeId=385&articleId=106816&docType=1

相关API工具封装

下面罗列了以上示例中用到的工具类封装,不再具体讲解,直接贴代码

DingTalkConst

常量池

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public class DingTalkConst {
public final static String CORP_ID = "dingb9875d6606f892ed35c2f4657eb6378f";
public final static Object CORP_SECRET = "到钉钉查看";
public final static String CALLBACK_TOKEN = "token"; // 回调Token
public final static String CALLBACK_AES_KEY = "xxxxx7p5qnb6zs3xxxxxlkfmxqfkv23d40yd0xxxxxx"; // 回调秘钥,43个随机字符
}

DingTalkCallbackTag

可供注册的回调事件类型枚举

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public enum DingTalkCallbackTag {
USER_ADD_ORG("通讯录用户增加"),
USER_MODIFY_ORG("通讯录用户更改"),
USER_LEAVE_ORG("通讯录用户离职"),
ORG_ADMIN_ADD("通讯录用户被设为管理员"),
ORG_ADMIN_REMOVE("通讯录用户被取消设置管理员"),
ORG_DEPT_CREATE("通讯录企业部门创建"),
ORG_DEPT_MODIFY("通讯录企业部门修改"),
ORG_DEPT_REMOVE("通讯录企业部门删除"),
ORG_REMOVE("企业被解散"),
ORG_CHANGE("企业信息发生变更"),
LABEL_USER_CHANGE("员工角色信息发生变更"),
LABEL_CONF_ADD("增加角色或者角色组"),
LABEL_CONF_DEL("删除角色或者角色组"),
LABEL_CONF_MODIFY("修改角色或者角色组");

private String describe;
DingTalkCallbackTag(String describe) {
this.describe = describe;
}

public String getDescribe() {
return describe;
}

public void setDescribe(String describe) {
this.describe = describe;
}

@Override
public String toString() {
return super.toString().toLowerCase();
}

public String toInfoString() {
return String.format("tag: %s, describe: %s", this.toString(), this.getDescribe());
}
}

DingTalkEncryptor

钉钉消息加密解密工作类

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package com.wuwenze.dingtalk.encrpty;

import com.google.common.collect.ImmutableMap;
import com.mzlion.core.binary.Base64;
import com.mzlion.core.lang.Assert;

import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import java.io.ByteArrayOutputStream;
import java.io.Serializable;
import java.nio.charset.Charset;
import java.security.MessageDigest;
import java.util.Arrays;
import java.util.Map;
import java.util.Random;

/**
* @author wwz
* @version 1 (2018/7/26)
* @since Java7
*/
public class DingTalkEncryptor {
private static final Charset CHARSET = Charset.forName("UTF-8");
private byte[] aesKey;
private String token;
private String corpId;

/**
* ask getPaddingBytes key固定长度
**/
private static final Integer AES_ENCODE_KEY_LENGTH = 43;
/**
* 加密随机字符串字节长度
**/
private static final Integer RANDOM_LENGTH = 16;

/**
* 构造函数
*
* @param token 钉钉开放平台上,开发者设置的token
* @param encodingAesKey 钉钉开放台上,开发者设置的EncodingAESKey
* @param corpId ISV进行配置的时候应该传对应套件的SUITE_KEY(第一次创建时传的是默认的CREATE_SUITE_KEY),普通企业是Corpid
*/
public DingTalkEncryptor(String token, String encodingAesKey, String corpId) {
if (null == encodingAesKey || encodingAesKey.length() != AES_ENCODE_KEY_LENGTH) {
throw new IllegalArgumentException("encodingAesKey is null");
}
this.token = token;
this.corpId = corpId;
this.aesKey = Base64.decode(encodingAesKey + "=");
}

/**
* 将和钉钉开放平台同步的消息体加密,返回加密Map
*
* @param message 传递的消息体明文
* @param timeStamp 时间戳
* @param nonce 随机字符串
* @return
*/
public Map<String, ? extends Serializable> getEncryptedMsg(String message, Long timeStamp, String nonce) {
Assert.notNull(message, "plaintext is null");
Assert.notNull(timeStamp, "timeStamp is null");
Assert.notNull(nonce, "nonce is null");
String encrypt = encrypt(getRandomStr(RANDOM_LENGTH), message);
String signature = getSignature(token, String.valueOf(timeStamp), nonce, encrypt);
return ImmutableMap.of(
"msg_signature", signature, //
"encrypt", encrypt, //
"timeStamp", timeStamp,//
"nonce", nonce);
}

/**
* 密文解密
*
* @param msgSignature 签名串
* @param timeStamp 时间戳
* @param nonce 随机串
* @param encryptMsg 密文
* @return 解密后的原文
*/
public String getDecryptMsg(String msgSignature, String timeStamp, String nonce, String encryptMsg) {
// 校验签名
String signature = getSignature(token, timeStamp, nonce, encryptMsg);
if (!signature.equals(msgSignature)) {
throw new RuntimeException("校验签名失败。");
}
// 解密
return decrypt(encryptMsg);
}

private String encrypt(String random, String plaintext) {
try {
byte[] randomBytes = random.getBytes(CHARSET);
byte[] plainTextBytes = plaintext.getBytes(CHARSET);
byte[] lengthByte = int2Bytes(plainTextBytes.length);
byte[] corpidBytes = corpId.getBytes(CHARSET);
ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
byteStream.write(randomBytes);
byteStream.write(lengthByte);
byteStream.write(plainTextBytes);
byteStream.write(corpidBytes);
byte[] padBytes = PKCS7Padding.getPaddingBytes(byteStream.size());
byteStream.write(padBytes);
byte[] unencrypted = byteStream.toByteArray();
byteStream.close();
Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding");
SecretKeySpec keySpec = new SecretKeySpec(aesKey, "AES");
IvParameterSpec iv = new IvParameterSpec(aesKey, 0, 16);
cipher.init(Cipher.ENCRYPT_MODE, keySpec, iv);
byte[] encrypted = cipher.doFinal(unencrypted);
return Base64.encode(encrypted);
} catch (Exception e) {
throw new RuntimeException(e);
}
}

/**
* 对密文进行解密.
* @param text 需要解密的密文
* @return 解密得到的明文
*/
private String decrypt(String text) {
byte[] originalArr;
try {
// 设置解密模式为AES的CBC模式
Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding");
SecretKeySpec keySpec = new SecretKeySpec(aesKey, "AES");
IvParameterSpec iv = new IvParameterSpec(Arrays.copyOfRange(aesKey, 0, 16));
cipher.init(Cipher.DECRYPT_MODE, keySpec, iv);
// 使用BASE64对密文进行解码, 解密
originalArr = cipher.doFinal(Base64.decode(text));
} catch (Exception e) {
throw new RuntimeException("计算解密文本错误");
}

String plainText;
String fromCorpid;
try {
// 去除补位字符
byte[] bytes = PKCS7Padding.removePaddingBytes(originalArr);
// 分离16位随机字符串,网络字节序和corpId
byte[] networkOrder = Arrays.copyOfRange(bytes, 16, 20);
int plainTextLegth = bytes2int(networkOrder);
plainText = new String(Arrays.copyOfRange(bytes, 20, 20 + plainTextLegth), CHARSET);
fromCorpid = new String(Arrays.copyOfRange(bytes, 20 + plainTextLegth, bytes.length), CHARSET);
} catch (Exception e) {
throw new RuntimeException("计算解密文本长度错误");
}

// corpid不相同的情况
if (!fromCorpid.equals(corpId)) {
throw new RuntimeException("计算文本密码错误");
}
return plainText;
}

/**
* 数字签名
* @param token isv token
* @param timestamp 时间戳
* @param nonce 随机串
* @param encrypt 加密文本
* @return
*/
public String getSignature(String token, String timestamp, String nonce, String encrypt) {
try {
String[] array = new String[]{token, timestamp, nonce, encrypt};
Arrays.sort(array);
StringBuffer sb = new StringBuffer();
for (int i = 0; i < 4; i++) {
sb.append(array[i]);
}
String str = sb.toString();
MessageDigest md = MessageDigest.getInstance("SHA-1");
md.update(str.getBytes());
byte[] digest = md.digest();

StringBuffer hexstr = new StringBuffer();
String shaHex = "";
for (int i = 0; i < digest.length; i++) {
shaHex = Integer.toHexString(digest[i] & 0xFF);
if (shaHex.length() < 2) {
hexstr.append(0);
}
hexstr.append(shaHex);
}
return hexstr.toString();
} catch (Exception e) {
throw new RuntimeException(e);
}
}

public static String getRandomStr(int count) {
String base = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
Random random = new Random();
StringBuffer sb = new StringBuffer();
for (int i = 0; i < count; i++) {
int number = random.nextInt(base.length());
sb.append(base.charAt(number));
}
return sb.toString();
}


/**
* int转byte数组,高位在前
*/
public static byte[] int2Bytes(int count) {
byte[] byteArr = new byte[4];
byteArr[3] = (byte) (count & 0xFF);
byteArr[2] = (byte) (count >> 8 & 0xFF);
byteArr[1] = (byte) (count >> 16 & 0xFF);
byteArr[0] = (byte) (count >> 24 & 0xFF);
return byteArr;
}

/**
* 高位在前bytes数组转int
* @param byteArr
* @return
*/
public static int bytes2int(byte[] byteArr) {
int count = 0;
for (int i = 0; i < 4; i++) {
count <<= 8;
count |= byteArr[i] & 0xff;
}
return count;
}
}

PKCS7Padding

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package com.wuwenze.dingtalk.encrpty;

import java.nio.charset.Charset;
import java.util.Arrays;

/**
* @author wwz
* @version 1 (2018/7/10)
* @since Java7
*/
public class PKCS7Padding {
private final static Charset CHARSET = Charset.forName("utf-8");
private final static int BLOCK_SIZE = 32;

/**
* 填充mode字节
* @param count
* @return
*/
public static byte[] getPaddingBytes(int count) {
int amountToPad = BLOCK_SIZE - (count % BLOCK_SIZE);
if (amountToPad == 0) {
amountToPad = BLOCK_SIZE;
}
char padChr = chr(amountToPad);
String tmp = new String();
for (int index = 0; index < amountToPad; index++) {
tmp += padChr;
}
return tmp.getBytes(CHARSET);
}

/**
* 移除mode填充字节
* @param decrypted
* @return
*/
public static byte[] removePaddingBytes(byte[] decrypted) {
int pad = (int) decrypted[decrypted.length - 1];
if (pad < 1 || pad > BLOCK_SIZE) {
pad = 0;
}
return Arrays.copyOfRange(decrypted, 0, decrypted.length - pad);
}

private static char chr(int a) {
byte target = (byte) (a & 0xFF);
return (char) target;
}
}

DingTalkApi

钉钉开放API简易封装 (仅供测试)

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package com.wuwenze.dingtalk.api;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.google.common.cache.CacheBuilder;
import com.google.common.cache.CacheLoader;
import com.google.common.cache.LoadingCache;
import com.google.common.collect.ImmutableMap;
import com.mzlion.core.lang.Assert;
import com.mzlion.easyokhttp.HttpClient;
import com.wuwenze.dingtalk.enums.DingTalkCallbackTag;
import lombok.extern.slf4j.Slf4j;

import java.io.Serializable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;


/**
* @author wwz
* @version 1 (2018/7/26)
* @since Java7
*/
@Slf4j
public class DingTalkApi {

private final static LoadingCache<String, String> mTokenCache = //
CacheBuilder.newBuilder()//
.maximumSize(100)//
.expireAfterAccess(7200, TimeUnit.SECONDS)//
.build(new CacheLoader<String, String>() {
@Override
public String load(String key) throws Exception {
// key:corpId#corpSecret
String[] params = key.split("#");
if (params.length != 2) {
throw new RuntimeException("#loadTokenCache error");
}
return getAccessToken(params[0], params[1]);
}
});



public static String getAccessToken(String corpId, String corpSecret) {
String url = String.format("https://oapi.dingtalk.com/gettoken?corpid=%s&corpsecret=%s",corpId, corpSecret);
JSONObject jsonObject = HttpClient.get(url).asBean(JSONObject.class);
assertDingTalkJSONObject(jsonObject);
return jsonObject.getString("access_token");
}

public static String getAccessTokenCache() {
try {
return mTokenCache.get(DingTalkConst.CORP_ID + "#" + DingTalkConst.CORP_SECRET);
} catch (ExecutionException e) {
return null;
}
}

public static void registerCallback(String accessToken, String callbackToken, String callbackAesKey, String url, DingTalkCallbackTag ... tags) {
Assert.notNull(accessToken, "accessToken is null");
Assert.notNull(callbackToken, "callbackToken is null");
Assert.notNull(callbackAesKey, "callbackAesKey is null");
Assert.notNull(url, "url is null");
if (tags.length < 1) {
throw new IllegalArgumentException("至少指定一个回调事件类型。");
}
String[] callbackTagArray = new String[tags.length];
for (int i = 0; i < tags.length; i++) {
callbackTagArray[i] = tags[i].toString();
}
ImmutableMap<String, Serializable> params = ImmutableMap.of(//
"call_back_tag", callbackTagArray,//
"token", callbackToken,//
"aes_key", callbackAesKey, //
"url", url//
);
String apiUrl = "https://oapi.dingtalk.com/call_back/register_call_back?access_token=" + accessToken;
assertDingTalkJSONObject(//
HttpClient.textBody(apiUrl).json(JSON.toJSONString(params)).asBean(JSONObject.class)
);
log.info("#registerCallback 注册回调接口 -> url: {}, tags: {}", url, showTagsInfo(tags));
}

private static String showTagsInfo(DingTalkCallbackTag ... tags) {
StringBuffer stringBuffer = new StringBuffer();
for (DingTalkCallbackTag tag : tags) {
stringBuffer.append(tag.toInfoString()).append(" + ");
}
return stringBuffer.toString();
}

public static void removeCallback(String accessToken) {
String apiUrl = "https://oapi.dingtalk.com/call_back/delete_call_back?access_token=" + accessToken;
assertDingTalkJSONObject(//
HttpClient.get(apiUrl).asBean(JSONObject.class)
);
}

public static void removeCallback() {
removeCallback(getAccessTokenCache());
}

public static void registerCallback(String url, DingTalkCallbackTag ... tags) {
registerCallback(getAccessTokenCache(), DingTalkConst.CALLBACK_TOKEN, DingTalkConst.CALLBACK_AES_KEY, url, tags);
}

private static void assertDingTalkJSONObject(JSONObject jsonObject) {
log.info(jsonObject.toJSONString());
int errcode = jsonObject.getIntValue("errcode");
if (errcode != 0) {
throw new RuntimeException(jsonObject.getString("errmsg"));
}
}
}

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