C# 调用 MVC Controller 方法， 传递图片

1.C# 调用  MVC Controller 的方法，文字，图片当参数。

2.http方法的参数只能是字符串，图片以byte[]二进制 传递。

3.Newtonsoft.Json.JsonConvert.SerializeObject   会自动将byte[] 转为 base64（网络编码格式）的字符串。

------------------------------------------------------- A服务端

public string SetMouseAlarm(string dbname, string pid, string remarks, byte[] ImgBytes)
        {
            try
            {
                string sql = "INSERT INTO dbo.T_AlarmInfo VALUES(" + pid + ", NULL, NULL, NULL, '老鼠', 1, NULL, 0, 1, '一般', GETDATE(), '', NULL, 0, '" + remarks + "');SELECT MAX(ID) FROM dbo.T_AlarmInfo;";
                string id = DBHelper.ExecuteNonQurey1(dbname, sql, CommandType.Text, null).ToString();
                ////////////////
                System.IO.MemoryStream ms = new System.IO.MemoryStream(ImgBytes);
                System.Drawing.Image img = System.Drawing.Image.FromStream(ms);
                string imagePath = Server.MapPath("~/ShangChuan/LaoShuImages");
                //保存到磁盘文件
                if (!System.IO.Directory.Exists(imagePath))
                    System.IO.Directory.CreateDirectory(imagePath);
                //img.Save(System.IO.Path.Combine(imagePath, DateTime.Now.ToString("yyyyMMddHHmmss") + ".jpg"), System.Drawing.Imaging.ImageFormat.Jpeg);
                img.Save(System.IO.Path.Combine(imagePath, id + ".jpg"), System.Drawing.Imaging.ImageFormat.Jpeg);

                ms.Dispose();
                return "1";
            }
            catch (Exception e)
            {
                return e.Message;
            }
        }

 

 

B---------------客户端调用

1.客户端http封装类

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Web;

namespace WebApplication1.HelpClass
{
    public class HttpClient
    {
        /// <summary>
        /// Seivice URL
        /// </summary>
        public string Url { get; set; }
        /// <summary>
        /// 内容，body，fields参数
        /// </summary>
        public string Data { get; set; }
        /// <summary>
        /// Cookie，保证登录后，所有访问持有一个Cookie；
        /// </summary>
        static CookieContainer Cookie = new CookieContainer();
        /// <summary>
        /// Seivice Method ,post,get,delete,put,等等，支持大小写
        /// </summary>
        public string Method { get; set; }

        /// <summary>
        /// HTTP访问
        /// </summary>
        public string AsyncRequest()
        {
            HttpWebRequest httpRequest = HttpWebRequest.Create(Url) as HttpWebRequest;
            httpRequest.Method = Method;
            httpRequest.ContentType = "application/json";
            httpRequest.CookieContainer = Cookie;
            httpRequest.Timeout = 1000 * 60 * 10;//10min

            using (Stream reqStream = httpRequest.GetRequestStream())
            {
                var bytes = UnicodeEncoding.UTF8.GetBytes(Data);
                reqStream.Write(bytes, 0, bytes.Length);
                reqStream.Flush();
            }
            using (var repStream = httpRequest.GetResponse().GetResponseStream())
            {
                using (var reader = new StreamReader(repStream))
                {
                    return ValidateResult(reader.ReadToEnd());
                }
            }
        }

        private static string ValidateResult(string responseText)
        {
            if (responseText.StartsWith("response_error:"))
            {
                return responseText.TrimStart("response_error:".ToCharArray());
            }
            return responseText;
        }
    }

    public class UserInfo
    {
        public string dbname { get; set; }
        public string pid { get; set; }
        public string remarks { get; set; }
        public byte[] ImgBytes { get; set; }

    }

}

2.调用方法

public void aaaa()
        {
            HelpClass.HttpClient httpClient = new HelpClass.HttpClient();
            httpClient.Url = "http://172.16.6.133:8067/Alarm/SetMouseAlarm";
            httpClient.Method = "post";

            HelpClass.UserInfo userInfo = new HelpClass.UserInfo();
            userInfo.dbname = "DB_YWSystem_cqly5";
            userInfo.pid = "1";
            userInfo.remarks = "老鼠报警3";
            userInfo.ImgBytes = GetPictureData();

            httpClient.Data = Newtonsoft.Json.JsonConvert.SerializeObject(userInfo);
            var iResult = httpClient.AsyncRequest();
            //var iResult = Newtonsoft.Json.Linq.JObject.Parse();
        }



        //图片转成二进制
        public byte[] GetPictureData()
        {
            string path = Server.MapPath("~/ShangChuan/LaoShuImages/AA.jpg");
            System.IO.FileStream a = new System.IO.FileStream(path, System.IO.FileMode.Open);
            byte[] byData = new byte[a.Length];
            a.Read(byData, 0, byData.Length);
            a.Close();
            return byData;
            //SetMouseAlarm("DB_YWSystem_cqly5", "1", "发现老鼠报警...", byData);http://172.16.6.133:8067/Alarm/SetMouseAlarm
        }