七牛图片云存储 配置及示例

一、七牛自定义配置节点

 <configSections>
    <section name ="QiniuConfig" type="Amy.Toolkit.QiniuStorage.SectionHandler"/>
  </configSections>

  <QiniuConfig>
    <add key="AccessKey" value="自己的accesskey"></add>
    <add key="SecretKey" value="自己的secretkey"></add>
    <add key="Bucket" value="空间名称"></add>
    <add key="Domain" value="七牛域名/自己域名"></add>
  </QiniuConfig>

二、实现自定义配置功能

    public class Config
    {
        /// <summary>
        /// 七牛公钥
        /// </summary>
        public string AccessKey { get; set; }

        /// <summary>
        /// 七牛密钥
        /// </summary>
        public string SecretKey { get; set; }

        /// <summary>
        /// 资源空间
        /// </summary>
        public string Bucket { get; set; }

        /// <summary>
        /// 空间域名
        /// </summary>
        public string Domain { get; set; }
    }

    public class SectionHandler : IConfigurationSectionHandler
    {
        public object Create(object parent, object configContext, XmlNode section)
        {
            Config config = new Config();

            //解析配置文件信息，返回对象
            if (section != null)
            {
                foreach (XmlNode item in section.ChildNodes)
                {
                    switch (item.Attributes["key"].InnerText)
                    {
                        case "AccessKey":
                            config.AccessKey = item.Attributes["value"].InnerText;
                            break;
                        case "SecretKey":
                            config.SecretKey = item.Attributes["value"].InnerText;
                            break;
                        case "Bucket":
                            config.Bucket = item.Attributes["value"].InnerText;
                            break;
                        case "Domain":
                            config.Domain = item.Attributes["value"].InnerText;
                            break;
                        default:
                            break;
                    }

                }
            }
            return config;
        }
    }

三、实现七牛上传图片功能

    public class QiniuFactory
    {
        /// <summary>
        /// 上传图片
        /// </summary>
        /// <param name="stream">图片流</param>
        /// <returns>七牛图片路径</returns>
        public static string UploadImage(System.IO.Stream stream)
        {
            Config config = (Config)ConfigurationManager.GetSection("QiniuConfig");

            //设置账号的AK和SK
            Qiniu.Conf.Config.ACCESS_KEY = config.AccessKey;
            Qiniu.Conf.Config.SECRET_KEY = config.SecretKey;

            IOClient target = new IOClient();
            PutExtra extra = new PutExtra();

            //设置上传的空间
            String bucket = config.Bucket;

            //设置上传的文件的key值（及文件名称）
            String key = IDHelper.Id32 + ".jpg";

            //普通上传,只需要设置上传的空间名就可以了,第二个参数可以设定token过期时间
            PutPolicy put = new PutPolicy(bucket, 3600);

            //调用Token()方法生成上传的Token
            string upToken = put.Token();

            //上传文件的路径
            //string filePath = @"F:130326213588cbde762953a234.jpg";

            //调用PutFile()方法上传
            //PutRet ret = target.PutFile(upToken, key, filePath, extra);
            var ret = target.Put(upToken, key, stream, extra);
            

            return string.IsNullOrEmpty(ret.key) ? string.Empty : string.Format("{0}/{1}", config.Domain, ret.key);
        }

        /// <summary>
        /// 上传图片
        /// </summary>
        /// <param name="stream">图片流</param>
        /// <returns>七牛图片路径</returns>
        public static string UploadImage(byte[] bytes)
        {
            Config config = (Config)ConfigurationManager.GetSection("QiniuConfig");

            //设置账号的AK和SK
            Qiniu.Conf.Config.ACCESS_KEY = config.AccessKey;
            Qiniu.Conf.Config.SECRET_KEY = config.SecretKey;

            IOClient target = new IOClient();
            PutExtra extra = new PutExtra();

            //设置上传的空间
            String bucket = config.Bucket;

            //设置上传的文件的key值（及文件名称）
            String key = IDHelper.Id32 + ".jpg";

            //普通上传,只需要设置上传的空间名就可以了,第二个参数可以设定token过期时间
            PutPolicy put = new PutPolicy(bucket, 3600);

            //调用Token()方法生成上传的Token
            string upToken = put.Token();

            //上传文件的路径
            //string filePath = @"F:130326213588cbde762953a234.jpg";

            //调用PutFile()方法上传
            //PutRet ret = target.PutFile(upToken, key, filePath, extra);
            var ret = target.Put(upToken, key, new System.IO.MemoryStream(bytes), extra);


            return string.IsNullOrEmpty(ret.key) ? string.Empty : string.Format("{0}/{1}", config.Domain, ret.key);
        }
    }

四、客户端调用七牛

    /// <summary>
    /// 七牛上传文件
    /// </summary>
    public string QiniuUploadFile()
    {
        var url = "七牛图片访问路径";

        var files = Request.Files;

        if (files.Count > 0)
        {
            url = Amy.Toolkit.QiniuStorage.QiniuFactory.UploadImage(files[0].InputStream);
        }

        return url;
    }