接收POST提交的JSON
$data = $request->json()->all();
$application_id = isset($data['application_id']) ? $data['application_id'] : '';生成随机字符串
生成固定长度的随机字符串
$string = str_random(32);生成指定长度范围的随机字符串
str_random(random_int(20, 30));
$data = $request->json()->all();
$application_id = isset($data['application_id']) ? $data['application_id'] : '';$string = str_random(32);str_random(random_int(20, 30));
