先用composer下载安装扩展包

composer require "johnlui/aliyun-oss"

安装完成之后的设置
在app目录下建立：App\services\OSS 目录

<?php
namespace App\services;
use JohnLui\AliyunOSS;
use Exception;
use DateTime;
class OSS {
 /* 城市名称：
  *
  *  经典网络下可选：杭州、上海、青岛、北京、张家口、深圳、香港、硅谷、弗吉尼亚、新加坡、悉尼、日本、法兰克福、迪拜
  *  VPC 网络下可选：杭州、上海、青岛、北京、张家口、深圳、硅谷、弗吉尼亚、新加坡、悉尼、日本、法兰克福、迪拜
  */
 private $city = '上海';
 // 经典网络 or VPC
 private $networkType = '经典网络';

 private $AccessKeyId = 'LTAI5tKXjorberceJii3UL2D';
 private $AccessKeySecret = 'byiFFJGuy4sK5gNTjC0lZlhP5H85cD';
 private $ossClient;
 /**
  * 私有初始化 API，非 API，不用关注
  * @param boolean 是否使用内网
  */
 public function __construct($isInternal = false)
 {
     if ($this->networkType == 'VPC' && !$isInternal) {
         throw new Exception("VPC 网络下不提供外网上传、下载等功能");
     }
     $this->ossClient = AliyunOSS::boot(
         $this->city,
         $this->networkType,
         $isInternal,
         $this->AccessKeyId,
         $this->AccessKeySecret
     );
 }
 /**
  * 使用外网上传文件
  * @param  string bucket名称
  * @param  string 上传之后的 OSS object 名称
  * @param  string 上传文件路径
  * @return boolean 上传是否成功
  */
 public static function publicUpload($bucketName, $ossKey, $filePath, $options = [])
 {
     $oss = new OSS();
     $oss->ossClient->setBucket($bucketName);
     return $oss->ossClient->uploadFile($ossKey, $filePath, $options);
 }
 /**
  * 使用阿里云内网上传文件
  * @param  string bucket名称
  * @param  string 上传之后的 OSS object 名称
  * @param  string 上传文件路径
  * @return boolean 上传是否成功
  */
 public static function privateUpload($bucketName, $ossKey, $filePath, $options = [])
 {
     $oss = new OSS(true);
     $oss->ossClient->setBucket($bucketName);
     return $oss->ossClient->uploadFile($ossKey, $filePath, $options);
 }
 /**
  * 使用外网直接上传变量内容
  * @param  string bucket名称
  * @param  string 上传之后的 OSS object 名称
  * @param  string 上传的变量
  * @return boolean 上传是否成功
  */
 public static function publicUploadContent($bucketName, $ossKey, $content, $options = [])
 {
     $oss = new OSS();
     $oss->ossClient->setBucket($bucketName);
     return $oss->ossClient->uploadContent($ossKey, $content, $options);
 }
 /**
  * 使用阿里云内网直接上传变量内容
  * @param  string bucket名称
  * @param  string 上传之后的 OSS object 名称
  * @param  string 上传的变量
  * @return boolean 上传是否成功
  */
 public static function privateUploadContent($bucketName, $ossKey, $content, $options = [])
 {
     $oss = new OSS(true);
     $oss->ossClient->setBucket($bucketName);
     return $oss->ossClient->uploadContent($ossKey, $content, $options);
 }
 /**
  * 使用外网删除文件
  * @param  string bucket名称
  * @param  string 目标 OSS object 名称
  * @return boolean 删除是否成功
  */
 public static function publicDeleteObject($bucketName, $ossKey)
 {
     $oss = new OSS();
     $oss->ossClient->setBucket($bucketName);
     return $oss->ossClient->deleteObject($bucketName, $ossKey);
 }
 /**
  * 使用阿里云内网删除文件
  * @param  string bucket名称
  * @param  string 目标 OSS object 名称
  * @return boolean 删除是否成功
  */
 public static function privateDeleteObject($bucketName, $ossKey)
 {
     $oss = new OSS(true);
     $oss->ossClient->setBucket($bucketName);
     return $oss->ossClient->deleteObject($bucketName, $ossKey);
 }
 # 下面不再分公网内网出 API，也不注释了，大家自行体会吧
 public function copyObject($sourceBuckt, $sourceKey, $destBucket, $destKey)
 {
     $oss = new OSS();
     return $oss->ossClient->copyObject($sourceBuckt, $sourceKey, $destBucket, $destKey);
 }
 public function moveObject($sourceBuckt, $sourceKey, $destBucket, $destKey)
 {
     $oss = new OSS();
     return $oss->ossClient->moveObject($sourceBuckt, $sourceKey, $destBucket, $destKey);
 }
 // 获取公开文件的 URL
 public static function getPublicObjectURL($bucketName, $ossKey)
 {
     $oss = new OSS();
     $oss->ossClient->setBucket($bucketName);
     return $oss->ossClient->getPublicUrl($ossKey);
 }
 // 获取私有文件的URL，并设定过期时间，如 \DateTime('+1 day')
 public static function getPrivateObjectURLWithExpireTime($bucketName, $ossKey, DateTime $expire_time)
 {
     $oss = new OSS();
     $oss->ossClient->setBucket($bucketName);
     return $oss->ossClient->getUrl($ossKey, $expire_time);
 }
 public static function createBucket($bucketName)
 {
     $oss = new OSS();
     return $oss->ossClient->createBucket($bucketName);
 }
 public static function getAllObjectKey($bucketName)
 {
     $oss = new OSS();
     return $oss->ossClient->getAllObjectKey($bucketName);
 }
 public static function getObjectMeta($bucketName, $ossKey)
 {
     $oss = new OSS();
     return $oss->ossClient->getObjectMeta($bucketName, $ossKey);
 }
}

控制器使用代码
先在控制器引入OOS

use App\Services\OSS;

 //上传图片
 public function upload(Request $request){
     if ($request->isMethod('post')){
         $file   = $request->file('file');
         $allowed_extensions = ["png", "jpg","JPG","PNG","JPEG", "jpeg", "gif"];
         if($file){
             if(!$file->isValid()) {
                 $result = array('msg' => '上传出错，请重试！', 'code'=>500);
                 return response()->json($result);
             }
             if ($file->getClientOriginalExtension() && !in_array($file->getClientOriginalExtension(), $allowed_extensions)) {
                 $result = array('msg' => '上传格式不对！', 'code'=>500);
                 return response()->json($result);
             }
             $img_path = $file -> getRealPath(); // 获取临时图片绝对路径
             $entension = $file -> getClientOriginalExtension(); //  上传文件后缀
             $filename = date('YmdHis').mt_rand(100,999).'.'.$entension;  // 重命名图片
             $date = date('Y-m-d');
             $filePath = 'uploads/images/'.$date.'/'.$filename;
             //上传到阿里云服务器
             $res=OSS::publicUpload('tea-demo',$filePath, $img_path,        ['ContentType'=>'image/jpeg']);
             if($res){
                 $result = array('msg' => '上传成功!', 'code'=>200,'path'=>$filePath);
                 return response()->json($result);
             }else{
                 $result = array('msg' => '上传失败!', 'code'=>500);
                 return response()->json($result);
             }
         }else{
             $result = array('msg' => '文件不存在!', 'code'=>500);
             return response()->json($result);
         }
     }
 }