When requesting to obtain unlimited applet code interface, it is possible to respond: picture buffer . Possible response: JSON string. The response format is set to: raw-urlencoded . How to determine whether the interface request is a success or a failure?
1. The PHP code is implemented as follows
/**
* 获取不限制的小程序码
* @param $accessToken
* @param $scene
* @param $page
* @param $width
* @return mixed
* @throws ServerErrorHttpException
*/
public function getUnlimitedQRCode($accessToken, $scene, $page = null, $width = 430)
{
$response = $this->httpClient->createRequest()
->setMethod('POST')
->setUrl('wxa/getwxacodeunlimit?access_token=' . $accessToken)
->setFormat(Client::FORMAT_JSON)
->setData([
'scene' => $scene,
'page' => $page,
'width' => $width,
'check_path' => false,
'env_version' => 'trial'
])
->send();
// 设置响应格式为 raw-urlencoded（二进制数据）
$response->format = Client::FORMAT_RAW_URLENCODED;
// 检查响应状态码是否等于20x
if ($response->isOk) {
// 检查业务逻辑是否成功
if (isset($response->data['errcode']) && isset($response->data['errcode'])) {
throw new ServerErrorHttpException('获取不限制的小程序码失败，errcode：' . $response->data['errcode'] . '，errmsg：' . $response->data['errmsg'], 20021);
}
} else {
throw new ServerErrorHttpException('获取不限制的小程序码失败，status_code：' . $response->statusCode, 20022);
}
return $response->content;
}
2. When the response is a non-picture buffer, the data written in the picture file is incorrect. Image cannot be opened. The final decision is made to distinguish through the response header content-type. as shown in Figure 1
Figure 1
application/json; encoding=utf-8
image/jpeg
/**
* 获取不限制的小程序码
* @param $accessToken
* @param $scene
* @param $page
* @param $width
* @return mixed
* @throws ServerErrorHttpException
*/
public function getUnlimitedQRCode($accessToken, $scene, $page = null, $width = 430)
{
$response = $this->httpClient->createRequest()
->setMethod('POST')
->setUrl('wxa/getwxacodeunlimit?access_token=' . $accessToken)
->setFormat(Client::FORMAT_JSON)
->setData([
'scene' => $scene,
'page' => $page,
'width' => $width,
'check_path' => false,
'env_version' => 'trial'
])
->send();
// 检查响应状态码是否等于20x
if ($response->isOk) {
$contentType = $response->getHeaders()->get('Content-Type');
if (strpos($contentType, 'image/') !== false) {
return $response->content;
} elseif (strpos($contentType, 'application/json') !== false && isset($response->data['errcode']) && isset($response->data['errcode'])) {
throw new ServerErrorHttpException('获取不限制的小程序码失败，错误码：' . $response->data['errcode'] . '，错误信息：' . $response->data['errmsg'], 20021);
} else {
// 未知响应类型
throw new ServerErrorHttpException('获取不限制的小程序码失败，未知响应类型：' . $contentType, 20023);
}
} else {
throw new ServerErrorHttpException('获取不限制的小程序码失败，HTTP 状态码：' . $response->statusCode, 20022);
}
}
3. When the response is a non-picture buffer, yii\web\serverErrorHttpException: Failed to obtain unlimited applet code, error code: 40001, error message: invalid Credential. as shown in Figure 2
Figure 2
{
"code": 10000,
"message": "生成微信小程序二维码成功",
"data": {
"url": "/mini-program-qr-codes/644d4a4c0fff836ec9ac17d86d0911aa.png"
}
}
yii\web\ServerErrorHttpException: 获取不限制的小程序码失败，错误码：40001，错误信息：invalid credential, access_token is invalid or not latest, could get access_token by getStableAccessToken, more details at https://mmbizurl.cn/s/JtxxFh33r rid: 67d90e17-47a89f95-26c1c8de
