先说几个异常：
Required request part 'file' is not present
Required request part param is not present
Spring File Upload - 'Required request part is not present'
如果你使用php，对接api端的上传文件接口，包括java接口等，出现以上问题，只需要处理相应的参数即可。
header头，可以不写Content-Type:multiple/form-data
上传的文件地址，请务必要进行CURLFile处理。
代码贴下做参考：
$resource = $_SERVER['DOCUMENT_ROOT'].'/files/aaa.jpg';$headers = ["header"=>array('Authorization:'.$ysyToken)];$ysyData['file'] = new \CURLFile($resource);$result = CurlToolkit::requestYsyApi('POST','',$ysyData,$headers);
curl函数也贴出来做参考
public static function requestYsyApi($method, $url, $params = array(), $conditions = array()){$conditions['userAgent'] = isset($conditions['userAgent']) ? $conditions['userAgent'] : '';$conditions['connectTimeout'] = isset($conditions['connectTimeout']) ? $conditions['connectTimeout'] : 10;$conditions['timeout'] = isset($conditions['timeout']) ? $conditions['timeout'] : 10;$curl = curl_init();curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);curl_setopt($curl, CURLOPT_USERAGENT, $conditions['userAgent']);curl_setopt($curl, CURLOPT_CONNECTTIMEOUT, $conditions['connectTimeout']);curl_setopt($curl, CURLOPT_TIMEOUT, $conditions['timeout']);curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);if(isset($conditions['header']) && $conditions['header']){curl_setopt($curl, CURLOPT_HEADER, 0);}else{curl_setopt($curl, CURLOPT_HEADER, 1);}if ($method == 'POST') {curl_setopt($curl, CURLOPT_POST, 1);//TODOcurl_setopt($curl, CURLOPT_POSTFIELDS, $params);} elseif ($method == 'PUT') {curl_setopt($curl,CURLOPT_HTTPHEADER,array("X-HTTP-Method-Override: $method"));//设置HTTP头信息curl_setopt($curl, CURLOPT_CUSTOMREQUEST, 'PUT');curl_setopt($curl, CURLOPT_POSTFIELDS, json_encode($params));} elseif ($method == 'DELETE') {curl_setopt($curl, CURLOPT_CUSTOMREQUEST, 'DELETE');curl_setopt($curl, CURLOPT_POSTFIELDS, json_encode($params));} elseif ($method == 'PATCH') {curl_setopt($curl, CURLOPT_CUSTOMREQUEST, 'PATCH');curl_setopt($curl, CURLOPT_POSTFIELDS, json_encode($params));} else {if (!empty($params)) {$url = $url.(strpos($url, '?') ? '&' : '?').http_build_query($params);}}if(isset($conditions['header']) && $conditions['header']){curl_setopt($curl, CURLOPT_HTTPHEADER, $conditions['header']);}curl_setopt($curl, CURLOPT_URL, $url);curl_setopt($curl, CURLINFO_HEADER_OUT, true);$response = curl_exec($curl);$curlinfo = curl_getinfo($curl);curl_close($curl);if (empty($curlinfo['namelookup_time'])) {return array();}if (isset($conditions['contentType']) && $conditions['contentType'] == 'plain') {return $response;}$body = json_decode($response, true);return $body;}
