GETorPOST方式保存和获取图片信息

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Net;

using System.IO;

using ServiceStack.Text;



namespace WeiXin.Core

{

    public class TFSHelper

    {

        private const int TIME_OUT = 30000;

        public class ReponseInfo

        {

            public string TFS_FILE_NAME { get; set; }

        }

        /// <summary>

        /// 保存图片

        /// </summary>

        /// <param name="url">请求的接口</param>

        /// <param name="data">字节数组形式的pic信息</param>

        /// <returns>图片文件名称</returns>



        public static string Save(string url, byte[] data)

        {

            string result = null;

            HttpWebRequest request = null;

            HttpWebResponse response = null;

            Stream writer = null;

            Stream reader = null;

            StreamReader sr = null;



            try

            {

                request = (HttpWebRequest)WebRequest.Create(url);

                request.Date = DateTime.Now;

                request.Timeout = TIME_OUT;

                request.Method = "POST";

                using (writer = request.GetRequestStream())

                {

                    writer.Write(data, 0, data.Length);

                }

            }

            catch (Exception ex)

            {

                throw new Exception("TFS存文件发送请求失败，原因：" + ex.Message);

            }

            finally

            {

                if (writer != null)

                {

                    writer.Close();

                }

            }



            try

            {

                response = (HttpWebResponse)request.GetResponse();

                if (response.StatusCode == HttpStatusCode.OK)

                {

                    using (reader = response.GetResponseStream())

                    {

                        if (reader != null) sr = new StreamReader(reader, Encoding.GetEncoding("UTF-8"));

                        if (sr != null) result = sr.ReadToEnd();

                    }

                }

            }

            catch (Exception ex)

            {

                throw new Exception("TFS存文件接收数据失败，原因：" + ex.Message);

            }

            finally

            {

                if (sr != null)

                {

                    sr.Close();

                }

                if (reader != null)

                {

                    reader.Close();

                }

                if (response != null)

                {

                    response.Close();

                }

            }

            if (!string.IsNullOrEmpty(result))

            {

                result = result.FromJson<ReponseInfo>().TFS_FILE_NAME;//从响应的json字符串中获取到值

            }

            return result;

        }

        /// <summary>

        /// 获取图片

        /// </summary>

        /// <param name="url">请求的接口</param>

        /// <param name="imgName">图片名称</param>

        /// <returns>字节数组类型的pic信息</returns>



        public static byte[] Take(string url, string imgName)

        {

            HttpWebRequest request = null;

            HttpWebResponse response = null;

            Stream reader = null;

            url = url + "/" + imgName;

            try

            {

                request = (HttpWebRequest)WebRequest.Create(url);

                request.Date = DateTime.Now;

                request.Timeout = TIME_OUT;

                request.Method = "GET";                

                //using (StreamWriter writer = new StreamWriter(request.GetRequestStream()))

                //{

                //    writer.Write(imgName);

                //}

            }

            catch (Exception ex)

            {

                throw new Exception("TFS取文件发送请求失败，原因：" + ex.Message);

            }

            try

            {

                response = (HttpWebResponse)request.GetResponse();

                if (response.StatusCode == HttpStatusCode.OK)

                {

                    using (reader = response.GetResponseStream())

                    {

                        MemoryStream ms = new MemoryStream();

                        reader.CopyTo(ms);

                        return ms.ToArray();

                    }

                }

            }

            catch (Exception ex)

            {

                throw new Exception("TFS取文件接受数据失败，原因：" + ex.Message);

            }

            finally

            {

                if (reader != null)

                {

                    reader.Close();

                }

                if (response != null)

                {

                    response.Close();

                }

            }

            return null;

        }

        /// <summary>

        /// 删除tfs文件

        /// </summary>

        /// <param name="url">请求的接口</param>

        /// <returns>删除是否成功</returns>

        public static bool Delete(string url)

        {

            bool result = false;

            HttpWebRequest request = null;

            HttpWebResponse response = null;

            try

            {

                request = WebRequest.Create(url) as HttpWebRequest;

                request.Date = DateTime.Now;

                request.Timeout = TIME_OUT;

                request.Method = "DELETE";

            }

            catch (Exception ex)

            {

                throw new Exception("TFS删除文件发送请求失败，原因：" + ex.Message);

            }

            try

            {

                response = request.GetResponse() as HttpWebResponse;

                if (response.StatusCode == HttpStatusCode.OK)

                {

                    result = true;

                }

            }

            catch (Exception ex)

            {



                throw new Exception("TFS删除文件接受数据失败，原因：" + ex.Message);

            }

            finally

            {

                if (response != null)

                {

                    response.Close();

                }

            }

            return result;

        }

    }

}