微信小程序生成太阳码

https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token=access_token

必须通过POST提交

而且参数必须是JSON的格式

<?php

/**
 * curl请求数据
 *
 * @param string $url 请求地址
 * @param array $param 请求参数
 * @param string $contentType 请求参数格式(json)
 * @return boolean|mixed
 */
function https_request($url = \'\', $param = [], $contentType = \'\'){
    $ch = curl_init();

    // 请求地址
    curl_setopt($ch, CURLOPT_URL, $url);

    // 请求参数类型
    $param = $contentType == \'json\' ? json_encode($param) : $param;

    // 关闭https验证
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);

    // post提交
    if($param){
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $param);
    }

    // 返回的数据是否自动显示
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

    // 执行并接收响应结果
    $output = curl_exec($ch);

    // 关闭curl
    curl_close($ch);

    return $output !== false ? $output : false;
}

$access_token="10_X1w4ypXMdfliiv4orym7n7Ur8UMV3LsPAyyBng-DOjcZfAW1mlfKb1BAvBQuBIMUvk_Bq2lv3E2TI8QLvTrnmy1TBxoDeXu_JvR_sobPBkUimmA-aNasktu-J6UWLCgAAAFUL";
$request_url=\'https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token=\'.$access_token;
$request_data=array(
    \'scene\'=>\'abcdef\',
    \'page\'=>\'pages/home/index\',
    \'width\'=>\'690\'
);

print_r(https_request($request_url,$request_data,\'json\'));

这里有几点需要注意，page参数中的值一定要是小程序中存在的。

这里的access_token是用小程序的Appid和AppSecret生成的。之前还傻乎乎的去开启公众号的APPSecret。

再一个，这里返回的数据，不是JSON数据，而是二维码图片数据。

如何通过postman操作呢？

万能的POSTMAN啊。

{"page":"pages/home/index","scene":"abcdef","width":690}

封装

封装接口

// 获取太阳码
public function get_xcx_code() {
        $uid = $_POST[\'uid\'];
        if (!$uid) {
            $this->json->setErr(\'10001\', \'缺少参数\');
            $this->json->Send();
        }

        // 获取用户信息
        $user_model = M(\'user\');
        $user_info  = $user_model->where([\'id\'=>$uid])->find();
        if (!$user_info) {
            $this->json->setErr(\'10002\', \'用户不存在\');
            $this->json->Send();
        }

        $scene = $user_info[\'invite_code\'];

        vendor(\'Func.Http\');
        $request_data = [
            \'scene\' => $scene,
            \'page\'  => "pages/home/index",
            \'width\' => 690
        ];

        $request_url=\'https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token=\'.$this->get_access_token();
        $result = Http::doPostJson($request_url,$request_data);
        header(\'Content-Type: image/jpeg; charset=UTF-8\');
        echo $result;exit;
}

处理成base64

// 获取太阳码
public function get_xcx_code() {
        $uid = $_POST[\'uid\'];
        if (!$uid) {
            $this->json->setErr(\'10001\', \'缺少参数\');
            $this->json->Send();
        }

        // 获取用户信息
        $user_model = M(\'user\');
        $user_info  = $user_model->where([\'id\'=>$uid])->find();
        if (!$user_info) {
            $this->json->setErr(\'10002\', \'用户不存在\');
            $this->json->Send();
        }
        $scene = $user_info[\'invite_code\'];
        vendor(\'Func.Http\');
        $request_data = [
            \'scene\' => $scene,
            \'page\'  => "pages/home/index",
//            \'width\' => 690
        ];
        $request_url=\'https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token=\'.$this->get_access_token();
        $result = Http::doPostJson($request_url,$request_data);
        // ob_clean();
        // header(\'Content-Type: image/png; charset=UTF-8\');
        // echo $result;exit;
        $this->json->setErr(0, \'获取成功\');
        $this->json->setAttr(\'data\',base64_encode($result));
        $this->json->Send();
}

封装post请求

// 通过POST方式发送json数据
static public function doPostJson($url = \'\', $param = [] ,$contentType = \'json\') {
        $ch = curl_init();
        // 请求地址
        curl_setopt($ch, CURLOPT_URL, $url);
        // 请求参数类型
        $param = $contentType == \'json\' ? json_encode($param) : http_build_query($param);
        // 关闭https验证
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
        // post提交
        if($param){
            curl_setopt($ch, CURLOPT_POST, 1);
            curl_setopt($ch, CURLOPT_POSTFIELDS, $param);
        }
        // 返回的数据是否自动显示
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        // 执行并接收响应结果
        $output = curl_exec($ch);
        // 关闭curl
        curl_close($ch);
        return $output !== false ? $output : false;
}

继续升级

 // 获取太阳码
public function get_xcx_code() {
        $uid = $_POST[\'uid\'];
        if (!$uid) {
            $this->json->setErr(\'10001\', \'缺少参数\');
            $this->json->Send();
        }

        // 查看是否已存储到数据库
        $user_suncode_model = M(\'user_suncode\');
        $user_suncode_info = $user_suncode_model->where([\'uid\'=>$uid])->find();
        if ($user_suncode_info) {
            $this->json->setErr(0, \'获取成功\');
            $this->json->setAttr(\'data\',$user_suncode_info[\'code_imgurl\']);
            $this->json->Send();
        }

        // 获取用户信息
        $user_model = M(\'user\');
        $user_info  = $user_model->where([\'id\'=>$uid])->find();
        if (!$user_info) {
            $this->json->setErr(\'10002\', \'用户不存在\');
            $this->json->Send();
        }
        
        $scene = $user_info[\'invite_code\'];
        vendor(\'Func.Http\');
        $request_data = [
            \'scene\' => $scene,
            \'page\'  => "pages/home/index",
        ];
        $request_url=\'https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token=\'.$this->get_access_token();
        $result = Http::doPostJson($request_url,$request_data);

        // 存入cdn
        $cdn_result = $this->upload_cdn($result,\'suncode\');

        if ($cdn_result[\'errno\'] == 0) {
            // 存入数据库
            $add_data = [
                \'uid\' => $uid,
                \'code_imgurl\' => $cdn_result[\'save_name\'],
                \'addtime\' => time()
            ];

            $user_suncode_model = M(\'user_suncode\');
            $user_suncode_model->add($add_data);

            $this->json->setErr(0, \'获取成功\');
            $this->json->setAttr(\'data\',$cdn_result[\'save_name\']);
            $this->json->Send();
        } else {
            $this->json->setErr(10099, \'获取失败\');
            $this->json->Send();
        }
}

cdn函数

public function upload_cdn($img_result,$folders="common"){
        $date_folders = date(\'Ymd\',time());
        $savePath =  "site_upload/".$folders.\'/\'.$date_folders.\'/\';// 设置附件上传目录
        if (!is_dir($savePath)){
            @mkdir(\'./\'.$savePath, 0777,true);
        }

        $file_name = time().\'_\'.mt_rand().".png";
        $upload_flag = file_put_contents($savePath.$file_name,$img_result);

        if($upload_flag){
            vendor(\'Qiniu.Qiniu\');
            $qiniu = new Qiniu();

            $img =  C(\'SF_HOST\'). $savePath . $file_name;

            $ext = pathinfo($img, PATHINFO_EXTENSION);
            $name = time() . mt_rand() . \'.\' . $ext;
            $s = $qiniu->up($img, $name, C(\'QINIU.BUCKET\'));

            if($s){
                @unlink(\'./\'.$savePath . $file_name);
                $res[\'errno\']=\'0\';
                $res[\'errmsg\']=\'ok\';
                $res[\'save_name\'] = C(\'CDN.URI\') . $name;
            }else{
                @unlink(\'./\' .$savePath . $file_name);
                $res[\'errno\']=\'10001\';
                $res[\'errmsg\']=\'上传cdn失败\';
            }
        }else{
            $res[\'errno\']=\'10002\';
            $res[\'errmsg\']=\'上传图片失败\';
        }

        return $res;

 }