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七牛云存储官方接口PHP版本_PHP教程

WBOY原创: 2016-07-20 11:16:101029浏览

PHP SDKv6

此 SDK 适用于 PHP 5.1.0 及其以上版本。基于七牛云存储官方API 构建。使用此 SDK 构建您的网络应用程序，能让您以非常便捷地方式将数据安全地存储到七牛云存储上。无论您的网络应用是一个网站程序，还是包括从云端（服务端程序）到终端（手持设备应用）的架构的服务或应用，通过七牛云存储及其 SDK，都能让您应用程序的终端用户高速上传和下载，同时也让您的服务端更加轻盈。

SDK源码地址：https://github.com/qiniu/php-sdk/tags

应用接入
- 获取Access Key 和 Secret Key
资源管理接口
- 1 查看单个文件属性信息
- 2 复制单个文件
- 3 移动单个文件
- 4 删除单个文件
上传下载接口
- 1 文件上传
  - 1.1 上传流程
  - 1.2 上传策略
- 2 文件下载
  - 2.1 公有资源下载
  - 2.2 私有资源下载
数据处理接口
- 1 图像
  - 1.1 查看图像属性
  - 1.2 查看图片EXIF信息
  - 1.3 生成图片预览
贡献代码
许可证

应用接入

1. 获取Access Key 和 Secret Key

要接入七牛云存储，您需要拥有一对有效的 Access Key 和 Secret Key 用来进行签名认证。可以通过如下步骤获得：

资源管理接口

1.查看单个文件属性信息

示例代码如下：

<code class="php"><span class="keyword">require_once</span>(<span class="string">"qiniu/rs.php"</span>);

<span class="variable">$bucket</span> = <span class="string">"phpsdk"</span>;
<span class="variable">$key</span> = <span class="string">"pic.jpg"</span>;
<span class="variable">$accessKey</span> = <span class="string">'<YOUR_APP_ACCESS_KEY>'</span>;
<span class="variable">$secretKey</span> = <span class="string">'<YOUR_APP_SECRET_KEY>'</span>;

Qiniu_SetKeys(<span class="variable">$accessKey</span>, <span class="variable">$secretKey</span>);
<span class="variable">$client</span> = <span class="keyword">new</span> Qiniu_MacHttpClient(<span class="keyword">null</span>);

<span class="keyword">list</span>(<span class="variable">$ret</span>, <span class="variable">$err</span>) = Qiniu_RS_Stat(<span class="variable">$client</span>, <span class="variable">$bucket</span>, <span class="variable">$key</span>);
<span class="keyword">echo</span> <span class="string">"Qiniu_RS_Stat result: \n"</span>;
<span class="keyword">if</span> (<span class="variable">$err</span> !== <span class="keyword">null</span>) {
    var_dump(<span class="variable">$err</span>);
} <span class="keyword">else</span> {
    var_dump(<span class="variable">$ret</span>);
}
</code>

2. 复制单个文件

示例代码如下：

<code class="php"><span class="keyword">require_once</span>(<span class="string">"qiniu/rs.php"</span>);

<span class="variable">$bucket</span> = <span class="string">"phpsdk"</span>;
<span class="variable">$key</span> = <span class="string">"pic.jpg"</span>;
<span class="variable">$key1</span> = <span class="string">"file_name1"</span>;
<span class="variable">$accessKey</span> = <span class="string">'<YOUR_APP_ACCESS_KEY>'</span>;
<span class="variable">$secretKey</span> = <span class="string">'<YOUR_APP_SECRET_KEY>'</span>;

Qiniu_SetKeys(<span class="variable">$accessKey</span>, <span class="variable">$secretKey</span>);
<span class="variable">$client</span> = <span class="keyword">new</span> Qiniu_MacHttpClient(<span class="keyword">null</span>);

<span class="variable">$err</span> = Qiniu_RS_Copy(<span class="variable">$client</span>, <span class="variable">$bucket</span>, <span class="variable">$key</span>, <span class="variable">$bucket</span>, <span class="variable">$key1</span>);
<span class="keyword">echo</span> <span class="string">"====> Qiniu_RS_Copy result: \n"</span>;
<span class="keyword">if</span> (<span class="variable">$err</span> !== <span class="keyword">null</span>) {
    var_dump(<span class="variable">$err</span>);
} <span class="keyword">else</span> {
    <span class="keyword">echo</span> <span class="string">"Success!"</span>;
}
</code>

3. 移动单个文件

示例代码如下：

<code class="php"><span class="keyword">require_once</span>(<span class="string">"qiniu/rs.php"</span>);

<span class="variable">$bucket</span> = <span class="string">"phpsdk"</span>;
<span class="variable">$key</span> = <span class="string">"pic.jpg"</span>;
<span class="variable">$key1</span> = <span class="string">"file_name1"</span>;
<span class="variable">$accessKey</span> = <span class="string">'<YOUR_APP_ACCESS_KEY>'</span>;
<span class="variable">$secretKey</span> = <span class="string">'<YOUR_APP_SECRET_KEY>'</span>;

Qiniu_SetKeys(<span class="variable">$accessKey</span>, <span class="variable">$secretKey</span>);
<span class="variable">$client</span> = <span class="keyword">new</span> Qiniu_MacHttpClient(<span class="keyword">null</span>);

<span class="variable">$err</span> = Qiniu_RS_Move(<span class="variable">$client</span>, <span class="variable">$bucket</span>, <span class="variable">$key</span>, <span class="variable">$bucket</span>, <span class="variable">$key1</span>);
<span class="keyword">echo</span> <span class="string">"====> Qiniu_RS_Move result: \n"</span>;
<span class="keyword">if</span> (<span class="variable">$err</span> !== <span class="keyword">null</span>) {
    var_dump(<span class="variable">$err</span>);
} <span class="keyword">else</span> {
    <span class="keyword">echo</span> <span class="string">"Success!"</span>;
}
</code>

4. 删除单个文件

示例代码如下：

<code class="php"><span class="keyword">require_once</span>(<span class="string">"qiniu/rs.php"</span>);

<span class="variable">$bucket</span> = <span class="string">"phpsdk"</span>;
<span class="variable">$key1</span> = <span class="string">"file_name1"</span>;
<span class="variable">$accessKey</span> = <span class="string">'<YOUR_APP_ACCESS_KEY>'</span>;
<span class="variable">$secretKey</span> = <span class="string">'<YOUR_APP_SECRET_KEY>'</span>;

Qiniu_SetKeys(<span class="variable">$accessKey</span>, <span class="variable">$secretKey</span>);
<span class="variable">$client</span> = <span class="keyword">new</span> Qiniu_MacHttpClient(<span class="keyword">null</span>);

<span class="variable">$err</span> = Qiniu_RS_Delete(<span class="variable">$client</span>, <span class="variable">$bucket</span>, <span class="variable">$key1</span>);
<span class="keyword">echo</span> <span class="string">"====> Qiniu_RS_Delete result: \n"</span>;
<span class="keyword">if</span> (<span class="variable">$err</span> !== <span class="keyword">null</span>) {
    var_dump(<span class="variable">$err</span>);
} <span class="keyword">else</span> {
    <span class="keyword">echo</span> <span class="string">"Success!"</span>;
}
</code>

上传下载接口

###1. 文件上传

为了尽可能地改善终端用户的上传体验，七牛云存储首创了客户端直传功能。一般云存储的上传流程是：

<code class="php">客户端（终端用户） => 业务服务器 => 云存储服务
</code>

这样多了一次上传的流程，和本地存储相比，会相对慢一些。但七牛引入了客户端直传，将整个上传过程调整为：

<code class="php">客户端（终端用户） => 七牛 => 业务服务器
</code>

客户端（终端用户）直接上传到七牛的服务器，通过DNS智能解析，七牛会选择到离终端用户最近的ISP服务商节点，速度会比本地存储快很多。文件上传成功以后，七牛的服务器使用回调功能，只需要将非常少的数据（比如Key）传给应用服务器，应用服务器进行保存即可。

1.1上传流程

在七牛云存储中，整个上传流程大体分为这样几步：

需要注意的是，回调到业务服务器的过程是可选的，它取决于业务服务器颁发的 uptoken。如果没有回调，七牛会返回一些标准的信息（比如文件的 hash）给客户端。如果上传发生在业务服务器，以上流程可以自然简化为：

服务端生成 uptoken 代码如下：

<code class="php"><span class="keyword">require_once</span>(<span class="string">"qiniu/rs.php"</span>);

<span class="variable">$bucket</span> = <span class="string">'phpsdk'</span>;
<span class="variable">$accessKey</span> = <span class="string">'<YOUR_APP_ACCESS_KEY>'</span>;
<span class="variable">$secretKey</span> = <span class="string">'<YOUR_APP_SECRET_KEY>'</span>;

Qiniu_SetKeys(<span class="variable">$accessKey</span>, <span class="variable">$secretKey</span>);
<span class="variable">$putPolicy</span> = <span class="keyword">new</span> Qiniu_RS_PutPolicy(<span class="variable">$bucket</span>);
<span class="variable">$upToken</span> = <span class="variable">$putPolicy</span>->Token(<span class="keyword">null</span>);
</code>

上传文件到七牛（通常是客户端完成，但也可以发生在服务端）：

上传字符串

<code class="php"><span class="keyword">require_once</span>(<span class="string">"qiniu/io.php"</span>);
<span class="keyword">require_once</span>(<span class="string">"qiniu/rs.php"</span>);

<span class="variable">$bucket</span> = <span class="string">"phpsdk"</span>;
<span class="variable">$key1</span> = <span class="string">"file_name1"</span>;
<span class="variable">$accessKey</span> = <span class="string">'<YOUR_APP_ACCESS_KEY>'</span>;
<span class="variable">$secretKey</span> = <span class="string">'<YOUR_APP_SECRET_KEY>'</span>;

Qiniu_SetKeys(<span class="variable">$accessKey</span>, <span class="variable">$secretKey</span>);
<span class="variable">$putPolicy</span> = <span class="keyword">new</span> Qiniu_RS_PutPolicy(<span class="variable">$bucket</span>);
<span class="variable">$upToken</span> = <span class="variable">$putPolicy</span>->Token(<span class="keyword">null</span>);
<span class="keyword">list</span>(<span class="variable">$ret</span>, <span class="variable">$err</span>) = Qiniu_Put(<span class="variable">$upToken</span>, <span class="variable">$key1</span>, <span class="string">"Qiniu Storage!"</span>, <span class="keyword">null</span>);
<span class="keyword">echo</span> <span class="string">"====> Qiniu_Put result: \n"</span>;
<span class="keyword">if</span> (<span class="variable">$err</span> !== <span class="keyword">null</span>) {
    var_dump(<span class="variable">$err</span>);
} <span class="keyword">else</span> {
    var_dump(<span class="variable">$ret</span>);
}
</code>

上传本地文件

<code class="php"><span class="keyword">require_once</span>(<span class="string">"qiniu/io.php"</span>);
<span class="keyword">require_once</span>(<span class="string">"qiniu/rs.php"</span>);

<span class="variable">$bucket</span> = <span class="string">"phpsdk"</span>;
<span class="variable">$key1</span> = <span class="string">"file_name1"</span>;
<span class="variable">$accessKey</span> = <span class="string">'<YOUR_APP_ACCESS_KEY>'</span>;
<span class="variable">$secretKey</span> = <span class="string">'<YOUR_APP_SECRET_KEY>'</span>;

Qiniu_SetKeys(<span class="variable">$accessKey</span>, <span class="variable">$secretKey</span>);
<span class="variable">$putPolicy</span> = <span class="keyword">new</span> Qiniu_RS_PutPolicy(<span class="variable">$bucket</span>);
<span class="variable">$upToken</span> = <span class="variable">$putPolicy</span>->Token(<span class="keyword">null</span>);
<span class="variable">$putExtra</span> = <span class="keyword">new</span> Qiniu_PutExtra();
<span class="variable">$putExtra</span>->Crc32 = <span class="number">1</span>;
<span class="keyword">list</span>(<span class="variable">$ret</span>, <span class="variable">$err</span>) = Qiniu_PutFile(<span class="variable">$upToken</span>, <span class="variable">$key1</span>, __file__, <span class="variable">$putExtra</span>);
<span class="keyword">echo</span> <span class="string">"====> Qiniu_PutFile result: \n"</span>;
<span class="keyword">if</span> (<span class="variable">$err</span> !== <span class="keyword">null</span>) {
    var_dump(<span class="variable">$err</span>);
} <span class="keyword">else</span> {
    var_dump(<span class="variable">$ret</span>);
}
</code>

1.2 上传策略

uptoken 实际上是用 AccessKey/SecretKey 进行数字签名的上传策略(Qiniu_RS_PutPolicy)，它控制则整个上传流程的行为。让我们快速过一遍你都能够决策啥：

<code class="php"><span class="class"><span class="keyword">class</span> <span class="title">Qiniu_RS_PutPolicy</span>
{</span>
    <span class="keyword">public</span> <span class="variable">$Scope</span>;              <span class="comment">// 必选项。可以是 bucketName 或者 bucketName:key</span>
    <span class="keyword">public</span> <span class="variable">$CallbackUrl</span>;        <span class="comment">// 可选</span>
    <span class="keyword">public</span> <span class="variable">$CallbackBody</span>;       <span class="comment">// 可选</span>
    <span class="keyword">public</span> <span class="variable">$ReturnUrl</span>;          <span class="comment">// 可选， 更贴切的名字是 redirectUrl。</span>
    <span class="keyword">public</span> <span class="variable">$ReturnBody</span>;         <span class="comment">// 可选</span>
    <span class="keyword">public</span> <span class="variable">$AsyncOps</span>;           <span class="comment">// 可选</span>
    <span class="keyword">public</span> <span class="variable">$EndUser</span>;            <span class="comment">// 可选</span>
    <span class="keyword">public</span> <span class="variable">$Expires</span>;            <span class="comment">// 可选。默认是 3600 秒</span>
}
</code>

scope 限定客户端的权限。如果 scope 是 bucket，则客户端只能新增文件到指定的 bucket，不能修改文件。如果 scope 为 bucket:key，则客户端可以修改指定的文件。
callbackUrl 设定业务服务器的回调地址，这样业务服务器才能感知到上传行为的发生。
callbackBody 设定业务服务器的回调信息。文件上传成功后，七牛向业务服务器的callbackUrl发送的POST请求携带的数据。支持魔法变量和自定义变量。
returnUrl 设置用于浏览器端文件上传成功后，浏览器执行301跳转的URL，一般为 HTML Form 上传时使用。文件上传成功后浏览器会自动跳转到 returnUrl?upload_ret=returnBody。
returnBody 可调整返回给客户端的数据包，支持魔法变量和自定义变量。returnBody 只在没有 callbackUrl 时有效（否则直接返回 callbackUrl 返回的结果）。不同情形下默认返回的 returnBody 并不相同。在一般情况下返回的是文件内容的 hash，也就是下载该文件时的 etag；但指定 returnUrl 时默认的 returnBody 会带上更多的信息。
asyncOps 可指定上传完成后，需要自动执行哪些数据处理。这是因为有些数据处理操作（比如音视频转码）比较慢，如果不进行预转可能第一次访问的时候效果不理想，预转可以很大程度改善这一点。

关于上传策略更完整的说明，请参考 uptoken。

2. 文件下载

七牛云存储上的资源下载分为公有资源下载和私有资源下载。

私有（private）是 Bucket（空间）的一个属性，一个私有 Bucket 中的资源为私有资源，私有资源不可匿名下载。

新创建的空间（Bucket）缺省为私有，也可以将某个 Bucket 设为公有，公有 Bucket 中的资源为公有资源，公有资源可以匿名下载。

2.1 公有资源下载

如果在给bucket绑定了域名的话，可以通过以下地址访问。

<code class="xml">[GET] http://<span class="tag"><<span class="title">domain</span>></span>/<span class="tag"><<span class="title">key</span>></span>
</code>

示例代码：

<code class="ruby"><span class="variable">$key</span> = <span class="string">'pic.jpg'</span>;
<span class="variable">$domain</span> = <span class="string">'phpsdk.qiniudn.com'</span>;
<span class="regexp">//</span><span class="variable">$baseUrl</span> 就是您要访问资源的地址
<span class="variable">$baseUrl</span> = <span class="constant">Qiniu_RS_MakeBaseUrl</span>(<span class="variable">$domain</span>, <span class="variable">$key</span>);
</code>

其中可以到七牛云存储开发者自助网站绑定, 域名可以使用自己一级域名的或者是由七牛提供的二级域名(<bucket>.qiniudn.com</bucket>)。注意，尖括号不是必需，代表替换项。

2.2 私有资源下载

私有资源必须通过临时下载授权凭证(downloadToken)下载，如下：

<code class="xml">[GET] http://<span class="tag"><<span class="title">domain</span>></span>/<span class="tag"><<span class="title">key</span>></span>?e=<span class="tag"><<span class="title">deadline</span>></span>&token=<span class="tag"><<span class="title">downloadToken</span>></span>
</code>

注意，尖括号不是必需，代表替换项。
私有下载链接可以使用 SDK 提供的如下方法生成：

<code class="php"><span class="keyword">require_once</span>(<span class="string">"qiniu/rs.php"</span>);

<span class="variable">$key</span> = <span class="string">'pic.jpg'</span>;
<span class="variable">$domain</span> = <span class="string">'phpsdk.qiniudn.com'</span>;
<span class="variable">$accessKey</span> = <span class="string">'<YOUR_APP_ACCESS_KEY>'</span>;
<span class="variable">$secretKey</span> = <span class="string">'<YOUR_APP_SECRET_KEY>'</span>;

Qiniu_SetKeys(<span class="variable">$accessKey</span>, <span class="variable">$secretKey</span>);  
<span class="variable">$baseUrl</span> = Qiniu_RS_MakeBaseUrl(<span class="variable">$domain</span>, <span class="variable">$key</span>);
<span class="variable">$getPolicy</span> = <span class="keyword">new</span> Qiniu_RS_GetPolicy();
<span class="variable">$privateUrl</span> = <span class="variable">$getPolicy</span>->MakeRequest(<span class="variable">$baseUrl</span>, <span class="keyword">null</span>);
<span class="keyword">echo</span> <span class="string">"====> getPolicy result: \n"</span>;
<span class="keyword">echo</span> <span class="variable">$privateUrl</span> . <span class="string">"\n"</span>;
</code>

数据处理接口

七牛支持在云端对图像, 视频, 音频等富媒体进行个性化处理

1. 图像

1.1 查看图像属性

<code class="php"><span class="keyword">require_once</span>(<span class="string">"qiniu/rs.php"</span>);
<span class="keyword">require_once</span>(<span class="string">"qiniu/fop.php"</span>);

<span class="variable">$key</span> = <span class="string">'pic.jpg'</span>;
<span class="variable">$domain</span> = <span class="string">'phpsdk.qiniudn.com'</span>;
<span class="variable">$accessKey</span> = <span class="string">'<YOUR_APP_ACCESS_KEY>'</span>;
<span class="variable">$secretKey</span> = <span class="string">'<YOUR_APP_SECRET_KEY>'</span>;

Qiniu_SetKeys(<span class="variable">$accessKey</span>, <span class="variable">$secretKey</span>);  
<span class="comment">//生成baseUrl</span>
<span class="variable">$baseUrl</span> = Qiniu_RS_MakeBaseUrl(<span class="variable">$domain</span>, <span class="variable">$key</span>);

<span class="comment">//生成fopUrl</span>
<span class="variable">$imgInfo</span> = <span class="keyword">new</span> Qiniu_ImageInfo;
<span class="variable">$imgInfoUrl</span> = <span class="variable">$imgInfo</span>->MakeRequest(<span class="variable">$baseUrl</span>);

<span class="comment">//对fopUrl 进行签名，生成privateUrl。 公有bucket 此步可以省去。</span>
<span class="variable">$getPolicy</span> = <span class="keyword">new</span> Qiniu_RS_GetPolicy();
<span class="variable">$imgInfoPrivateUrl</span> = <span class="variable">$getPolicy</span>->MakeRequest(<span class="variable">$imgInfoUrl</span>, <span class="keyword">null</span>);
<span class="keyword">echo</span> <span class="string">"====> imageInfo privateUrl: \n"</span>;
<span class="keyword">echo</span> <span class="variable">$imgInfoPrivateUrl</span> . <span class="string">"\n"</span>;
</code>

将$imgInfoPrivateUrl粘贴到浏览器地址栏中就可以查看该图像的信息了。

1.2 查看图片EXIF信息

<code class="php"><span class="keyword">require_once</span>(<span class="string">"qiniu/rs.php"</span>);
<span class="keyword">require_once</span>(<span class="string">"qiniu/fop.php"</span>);

<span class="variable">$key</span> = <span class="string">'pic.jpg'</span>;
<span class="variable">$domain</span> = <span class="string">'phpsdk.qiniudn.com'</span>;
<span class="variable">$accessKey</span> = <span class="string">'<YOUR_APP_ACCESS_KEY>'</span>;
<span class="variable">$secretKey</span> = <span class="string">'<YOUR_APP_SECRET_KEY>'</span>;

Qiniu_SetKeys(<span class="variable">$accessKey</span>, <span class="variable">$secretKey</span>);  
<span class="comment">//生成baseUrl</span>
<span class="variable">$baseUrl</span> = Qiniu_RS_MakeBaseUrl(<span class="variable">$domain</span>, <span class="variable">$key</span>);

<span class="comment">//生成fopUrl</span>
<span class="variable">$imgExif</span> = <span class="keyword">new</span> Qiniu_Exif;
<span class="variable">$imgExifUrl</span> = <span class="variable">$imgExif</span>->MakeRequest(<span class="variable">$baseUrl</span>);

<span class="comment">//对fopUrl 进行签名，生成privateUrl。 公有bucket 此步可以省去。</span>
<span class="variable">$getPolicy</span> = <span class="keyword">new</span> Qiniu_RS_GetPolicy();
<span class="variable">$imgExifPrivateUrl</span> = <span class="variable">$getPolicy</span>->MakeRequest(<span class="variable">$imgExifUrl</span>, <span class="keyword">null</span>);
<span class="keyword">echo</span> <span class="string">"====> imageView privateUrl: \n"</span>;
<span class="keyword">echo</span> <span class="variable">$imgExifPrivateUrl</span> . <span class="string">"\n"</span>;
</code>

1.3 生成图片预览

<code class="php"><span class="keyword">require_once</span>(<span class="string">"qiniu/rs.php"</span>);
<span class="keyword">require_once</span>(<span class="string">"qiniu/fop.php"</span>);

<span class="variable">$key</span> = <span class="string">'pic.jpg'</span>;
<span class="variable">$domain</span> = <span class="string">'phpsdk.qiniudn.com'</span>;
<span class="variable">$accessKey</span> = <span class="string">'<YOUR_APP_ACCESS_KEY>'</span>;
<span class="variable">$secretKey</span> = <span class="string">'<YOUR_APP_SECRET_KEY>'</span>;

Qiniu_SetKeys(<span class="variable">$accessKey</span>, <span class="variable">$secretKey</span>);  
<span class="comment">//生成baseUrl</span>
<span class="variable">$baseUrl</span> = Qiniu_RS_MakeBaseUrl(<span class="variable">$domain</span>, <span class="variable">$key</span>);

<span class="comment">//生成fopUrl</span>
<span class="variable">$imgView</span> = <span class="keyword">new</span> Qiniu_ImageView;
<span class="variable">$imgView</span>->Mode = <span class="number">1</span>;
<span class="variable">$imgView</span>->Width = <span class="number">60</span>;
<span class="variable">$imgView</span>->Height = <span class="number">120</span>;
<span class="variable">$imgViewUrl</span> = <span class="variable">$imgView</span>->MakeRequest(<span class="variable">$baseUrl</span>);

<span class="comment">//对fopUrl 进行签名，生成privateUrl。 公有bucket 此步可以省去。</span>
<span class="variable">$getPolicy</span> = <span class="keyword">new</span> Qiniu_RS_GetPolicy();
<span class="variable">$imgViewPrivateUrl</span> = <span class="variable">$getPolicy</span>->MakeRequest(<span class="variable">$imgViewUrl</span>, <span class="keyword">null</span>);
<span class="keyword">echo</span> <span class="string">"====> imageView privateUrl: \n"</span>;
<span class="keyword">echo</span> <span class="variable">$imgViewPrivateUrl</span> . <span class="string">"\n"</span>;
</code>

贡献代码

许可证

基于 MIT 协议发布:

www.opensource.org/licenses/MIT

七牛云存储提供的免费额度:

存储空间10GB

每月 PUT/DELETE 10万次请求

每月下载流量10GB

每月 GET 100万次请求

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七牛云存储官方接口PHP版本_PHP教程

PHP SDKv6

应用接入

1. 获取Access Key 和 Secret Key

资源管理接口

1.查看单个文件属性信息

2. 复制单个文件

3. 移动单个文件

4. 删除单个文件

上传下载接口

1.1上传流程

1.2 上传策略

2. 文件下载

2.1 公有资源下载

2.2 私有资源下载

数据处理接口

1. 图像

1.1 查看图像属性

1.2 查看图片EXIF信息

1.3 生成图片预览

贡献代码

许可证

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