钉钉注册回调常见问题解决_PHP环境

**基于官方开放平台提供的PHP Demo进行钉钉业务事件回调接口注册时常见问题及解决：**
**1、注册业务事件回调接口请求参数配置说明**
```php
call_back_tag：需要监听的事件类型，如：["bpms_task_change", "bpms_instance_change"]
token：加解密需要用到的token，自定义
aes_key：数据加密密钥。用于回调数据的加密，长度固定为43个字符，从a-z, A-Z, 0-9共62个字符中选取，可以随机生成
url：接收事件回调的url，必须是公网可以访问的url地址
```
 
**2、接收事件回调的url页面加解密配置说明-测试回调URL**
```php
//企业内部应用开发可以忽略该项
define("CREATE_SUITE_KEY", "suite4xxxxxxxxxxxxxxx");
//套件key。企业内部应用开发请填写corpid
define("SUITE_KEY", "dingxxxxxxxxxxxxxxxx");
//企业内部应用开发可以忽略该项
define("SUITE_SECRET", "");
//加解密需要用到的token，自定义，保持和注册业务事件回调接口register_call_back传递的token值相同即可
define("TOKEN", "123456");
//企业内部应用可以忽略该项
define("APPID", "");
//数据加密密钥。自定义，用于回调数据的加密，长度固定为43个字符，从a-z, A-Z, 0-9共62个字符中选取，可以随机生成。保持和注册业务事件回调接口register_call_back传递的AES_KEY值相同即可
define("ENCODING_AES_KEY", "6g5j67qlyl3zvetqxz9jiocdr586fn2zvjp78zls3il");
```
 
**3、post请求头(不是json格式)/请使用json格式上传数据**
```php
public function curl_post_json($url, $jsonStr){
	$ch = curl_init();
	curl_setopt($ch, CURLOPT_POST, 1);
	curl_setopt($ch, CURLOPT_URL, $url);
	curl_setopt($ch, CURLOPT_POSTFIELDS, $jsonStr);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	curl_setopt($ch, CURLOPT_HTTPHEADER, array(
			'Content-Type: application/json; charset=utf-8',
			'Content-Length: ' . strlen($jsonStr)
		)
	);
	$reponse = curl_exec($ch);
	return json_decode($reponse,1);
}
PS：如提示post参数需要json类型，请对参数进行json_encode编码下
```
 
**4、官方开放平台提供的PHP Demo：pkcs7Encoder.php文件修改**
```php
function Prpcrypt($k)
{
	$this->key = base64_decode($k . "=");
}
修改为构造函数形式：
function __construct($k){
	$this->key = base64_decode($k . "=");
}
```
 
**5、官方开放平台提供的PHP Demo：DingtalkCrypt.php文件修改**
```php
class DingtalkCrypt
{
 private $m_token;
 private $m_encodingAesKey;
 private $m_suiteKey;
	//注意这里修改为构造函数
 function __construct($token, $encodingAesKey, $suiteKey)
 {
 $this->m_token = $token;
 $this->m_encodingAesKey = $encodingAesKey;
 $this->m_suiteKey = $suiteKey;
 }

public function EncryptMsg($plain, $timeStamp, $nonce, &$encryptMsg)
    {
        $pc = new Prpcrypt($this->m_encodingAesKey);

$array = $pc->encrypt($plain, $this->m_suiteKey);
        $ret = $array[0];
        if ($ret != 0) {
            //return $ret;
            return ['ErrorCode'=>$ret, 'data' => ''];
        }

if ($timeStamp == null) {
            $timeStamp = time();
        }
        $encrypt = $array[1];

$sha1 = new SHA1;
        $array = $sha1->getSHA1($this->m_token, $timeStamp, $nonce, $encrypt);
        $ret = $array[0];
        if ($ret != 0) {
            //return $ret;
            return ['ErrorCode'=>$ret, 'data' => ''];
        }
        $signature = $array[1];

$encryptMsg = json_encode(array(
            "msg_signature" => $signature,
            "encrypt" => $encrypt,
            "timeStamp" => $timeStamp,
            "nonce" => $nonce
        ));
        //return ErrorCode::$OK;
        return ['ErrorCode'=>ErrorCode::$OK, 'data' => $encryptMsg];
    }

public function DecryptMsg($signature, $timeStamp = null, $nonce, $encrypt, &$decryptMsg)
    {
        if (strlen($this->m_encodingAesKey) != 43) {
            //return ErrorCode::$IllegalAesKey;
            return ['ErrorCode'=>ErrorCode::$IllegalAesKey, 'data' => ''];
        }

$pc = new Prpcrypt($this->m_encodingAesKey);

if ($timeStamp == null) {
            $timeStamp = time();
        }

$sha1 = new SHA1;
        $array = $sha1->getSHA1($this->m_token, $timeStamp, $nonce, $encrypt);
        $ret = $array[0];

if ($ret != 0) {
            //return $ret;
            return ['ErrorCode'=>$ret, 'data' => ''];
        }

$verifySignature = $array[1];
        if ($verifySignature != $signature) {
            //return ErrorCode::$ValidateSignatureError;
            return ['ErrorCode'=>ErrorCode::$ValidateSignatureError, 'data' => ''];
        }

$result = $pc->decrypt($encrypt, $this->m_suiteKey);
        if ($result[0] != 0) {
            //return $result[0];
            return ['ErrorCode'=>$result[0], 'data' => ''];
        }
        $decryptMsg = $result[1];
        //return ErrorCode::$OK;
        return ['ErrorCode'=>ErrorCode::$OK, 'data' => $decryptMsg];

}
}
```
 
#### 【注册回调 示例代码】
```php
public function regcallback() {
 $post_data = json_encode(array(
 'call_back_tag' => ["bpms_task_change", "bpms_instance_change"],
 'token' => '123456',
 'aes_key' => '6g5j67qlyl3zvetqxz9jiocdr586fn2zvjp78zls3il',
 'url' => 'https://www.fity.cn/dingtalk/eventnotice/index',
 ));
 $rs = $this->curl_post_json($this->apihost."/call_back/register_call_back?access_token=".$this->token, $post_data);
 var_dump($rs);die;
 }
```
 
#### 【测试回调URL 示例代码】
```php
public function index(){
	define("SUITE_KEY", "dingxxxxxxxxxxxxxxxx");
	define("TOKEN", "123456");
	define("ENCODING_AES_KEY", "6g5j67qlyl3zvetqxz9jiocdr586fn2zvjp78zls3il");

$signature = $_GET["signature"];
	$timeStamp = $_GET["timestamp"];
	$nonce = $_GET["nonce"];
	$postdata = file_get_contents("php://input");
	$postList = json_decode($postdata,true);
	$encrypt = $postList['encrypt'];
	$crypt = new DingtalkCrypt(TOKEN, ENCODING_AES_KEY, SUITE_KEY);
	$msg = "";
	$res = $crypt->DecryptMsg($signature, $timeStamp, $nonce, $encrypt, $msg);

if ($res['ErrorCode'] != 0){//当解密失败记录
		Log::e("ErrorCode:" . $res['ErrorCode']);
		Log::e(json_encode($_GET));
		Log::e(json_encode($encrypt));
		Log::e('------------------------------------------------------------------------------------------');
	}else{
		Log::e("SuccessCode:" . $res['ErrorCode']);
		if(!$res['data']){//当返回值为空记录加密字符串信息
			Log::e(json_encode($_GET));
			Log::e(json_encode($encrypt));
		}
		Log::e(json_encode($res['data']));
		Log::e('------------------------------------------------------------------------------------------');

//创建成功后的回调推送
		$eventMsg = json_decode($res['data']);
		$eventType = $eventMsg->EventType;

//工作流变动:审批任务开始，结束，转交
		if("bpms_task_change" === $eventType){

}

//工作流变动:审批实例开始，结束
		if("bpms_instance_change" === $eventType){

}
		//注册回调接口 回调URL返回值调试		
		$res = "success";
		$encryptMsg = "";
		$encryData = $crypt->EncryptMsg($res, $timeStamp, $nonce, $encryptMsg);
		if($encryData['ErrorCode'] != 0){
			Log::e("ERR:" . $encryData);
		}else{
			echo $encryData['data'];
		}	
		
	}
}
```
 
**【以上问题主要出现在如下API使用过程】**
1、钉钉业务事件回调 - 回调管理API说明
https://ding-doc.dingtalk.com/doc#/serverapi2/pwz3r5
2、回调事件消息体加密
https://ding-doc.dingtalk.com/doc#/faquestions/ltr370

最后更新于 2020-07-09 18:10:12 并被添加「钉钉钉钉开放平台第三方API」标签，已有 8165 位童鞋阅读过。

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