C#中的multipart/form-data提交文件和參數(shù)
更新時間：2022年06月09日 09:18:49 作者：qq_34611658
這篇文章主要介紹了C#中的multipart/form-data提交文件和參數(shù)，具有很好的參考價值，希望對大家有所幫助。如有錯誤或未考慮完全的地方，望不吝賜教
C# multipart/form-data提交文件和參數(shù)
public static string PostJsonData(string url, Dictionary<string, string> dic, string imgfile)
{
string str = "";
try
{
HttpClient client = new HttpClient();
var postContent = new MultipartFormDataContent();
string boundary = string.Format("--{0}", DateTime.Now.Ticks.ToString("x"));
postContent.Headers.Add("ContentType", $"multipart/form-data, boundary={boundary}");
string image_file_Type="faceImage";
postContent.Add(new ByteArrayContent(File.ReadAllBytes(imgfile)), image_file_Type, imgfile);
foreach (var key in dic.Keys)
{
postContent.Add(new StringContent(dic[key].ToString()), key);
}
HttpResponseMessage response = client.PostAsync(url, postContent).Result;
str = response.Content.ReadAsStringAsync().Result;
}
catch (Exception ex)
{
Log.Print("PostJsonData:" + ex.ToString());
}
return str;
}C# POST multipart/form-data案例
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;
using XingcOpen.ILS.Business.Interface;
using XingcOpen.ILS.Core.Model;
using XingcOpen.ILS.Core.Log;
using XingcOpen.ILS.Business.Config.Module;
using XingcOpen.ILS.Business.Config;
using System.Threading;
using System.IO;
using Newtonsoft.Json.Linq;
using System.Net.Http.Headers;
using Newtonsoft.Json;
using System.Windows.Forms;
namespace XingcOpen.ILS.Business.ExpressSystemApi.Client
{
/// <summary>
/// 韓國圖片上報接口
/// </summary>
class HanGuoLogisticsPic : ISendPackageInfo
{
public bool CheckProcessHasRun()
{
throw new NotImplementedException();
}
UserConfigInfo config = UserConfigHelper.GetInstance().userConfig;
private static object _loc = new object();
private Thread DSuPicUpload;
public bool CheckTicketNumHasEffective(string ticketsNum)
{
throw new NotImplementedException();
}
public CommonResult GeneralSendTicketsNumAndPackageWeight(TicketInfo info)
{
throw new NotImplementedException();
}
public bool SendTicketsNumAndPackageWeight(string barcode, double weight, double length, double width, double height, double volume)
{
//定義圖片絕對路徑
//var ListImage = config.PicSavePath + @"\" + DateTime.Now.ToString("yyyyMMdd") + @"\" + barcode + ".jpg";
try
{
圖片上傳
DSuPicUpload = new Thread(() => UploadPic(barcode));
DSuPicUpload.Start();
return true;
}
catch (Exception ex)
{
Logger<HanGuoLogisticsPic>.Error("線程啟動異常," + ex.Message);
return false;
}
}
public T SendTicketsNumAndPackageWeight<T>(Dictionary<string, object> packageDic)
{
throw new NotImplementedException();
}
#region 圖片上報接口
private void UploadPic(string barcode)
{
while (true)
{
if (config.IsSavePic == 1)
{
//上傳圖片
DoLocalImgUpload(Path.Combine(config.PicSavePath, DateTime.Now.ToString("yyyyMMdd")), barcode);
DoLocalImgUpload(Path.Combine(config.PicSavePath, DateTime.Now.AddDays(-1).ToString("yyyyMMdd")), barcode);
}
Thread.Sleep(3000);
}
}
public void DoLocalImgUpload(string picFilepath, string barcode)
{
try
{
if (Directory.Exists(picFilepath))
{
DirectoryInfo directoryInfo = new DirectoryInfo(picFilepath);
//取圖片文件夾下的1分鐘之前的圖片的前5張（按創(chuàng)建時間排序）
//防止文件被占用
lock (_loc)
{
var topfiles = directoryInfo.EnumerateFiles().
Where(p => p.CreationTime <= DateTime.Now.AddMinutes(-1)).
OrderBy(f => f.CreationTime).
Take(5).ToList();
// topfiles.Distinct();
topfiles.OrderByDescending(x => x.FullName).Distinct();
if (topfiles.Count > 0)
{
//循環(huán)執(zhí)行上傳
foreach (var fileInfo in topfiles)
// for (var i = 0; i < topfiles.Count; i++)
{
Logger<HanGuoLogisticsPic>.Debug("topfiles.count:" + topfiles.Count + " fileInfo:" + fileInfo.FullName);
UploadLocalByName(fileInfo.FullName, barcode);
//topfiles.Remove(fileInfo);
}
topfiles.Clear();
Thread.Sleep(1000);
Logger<HanGuoLogisticsPic>.Debug("圖片上傳線程循環(huán)上傳中！");
}
}
}
}
catch (Exception ex)
{
Logger<HanGuoLogisticsPic>.Error(".圖片文件上傳發(fā)生異常！", ex);
}
}
public void UploadLocalByName(string picFilepath, string barcode)
{
string url = @"http://www.kwaiden.com/SendPackageInfo/ApiPhoto_I.asp";
try
{
Logger<HanGuoLogisticsPic>.Debug("picFilepath:" + picFilepath);
if (File.Exists(picFilepath))
{
int pos = picFilepath.LastIndexOf("\\");
string name = picFilepath.Substring(pos + 1);
string nums = name.Replace(".jpg", "");
//string userPhoto = string.Empty;
//byte[] bytes = File.ReadAllBytes(picFilepath);
//userPhoto = Convert.ToBase64String(bytes);
//userPhoto = userPhoto.Replace("+", "%2B");
if (UploadImages(nums, name, picFilepath, url, barcode))
{
//上傳完是否需要刪除？
File.Delete(picFilepath);
}
}
}
catch (Exception ex)
{
Logger<HanGuoLogisticsPic>.Error(".圖片文件上傳發(fā)生異常！", ex);
}
}
public bool UploadImages(string code, string name, string picFilepath, string url, string barcode)
{
try
{
string result = SendData(picFilepath, name, url, barcode, null, null);
var i = JObject.Parse(result);
if (i["result"].ToString().Trim() == "true")
{
//播放聲音文件
string strPath = Path.Combine(Application.StartupPath, @"config\sound") + "\\" + "Right.wav";
if (File.Exists(strPath))
{
System.Media.SoundPlayer sndPlayer2 = new System.Media.SoundPlayer(strPath);
sndPlayer2.Play();
}
else
{
Logger<HanGuoLogistics>.Error("PlaySoundSendSuccess。 不存在聲音文件：" + strPath);
}
return true;
}
else
{
//播放聲音文件
string strPath = Path.Combine(Application.StartupPath, @"config\sound") + "\\" + "Wrong.wav";
if (File.Exists(strPath))
{
System.Media.SoundPlayer sndPlayer2 = new System.Media.SoundPlayer(strPath);
sndPlayer2.Play();
}
else
{
Logger<HanGuoLogistics>.Error("PlaySoundSendSuccess。 不存在聲音文件：" + strPath);
}
return false;
}
}
catch (Exception e)
{
Logger<HanGuoLogisticsPic>.Error("上傳圖片異常 " + e);
}
return false;
}
public string SendData(string picFilepath, string name, string url, string barcode, string workConsole, string destination)
{
var fileContent1 = new ByteArrayContent(File.ReadAllBytes(picFilepath));
fileContent1.Headers.ContentDisposition = new ContentDispositionHeaderValue("file")
{
FileName = name
};
var postContent = new MultipartFormDataContent();
postContent.Add(new StringContent(barcode), "ticketsNum");
postContent.Add(fileContent1);//圖片文件
postContent.Add(new StringContent(workConsole), "workConsole");
postContent.Add(new StringContent(destination), "destination");
Logger<HanGuoLogisticsPic>.Debug("向"+config.HttpPostApiAddr+"發(fā)送數(shù)據(jù)"+JsonConvert.SerializeObject(postContent));
string httpResult = GetHttpPostResponse(url, postContent);
Logger<HanGuoLogisticsPic>.Debug("接收" + config.HttpPostApiAddr + "返回數(shù)據(jù)" + httpResult);
return httpResult;
}
private string GetHttpPostResponse(string url, MultipartFormDataContent postData)
{
string result = "";
//form表單格式傳參
try
{
HttpClient client = new HttpClient();
HttpResponseMessage response = client.PostAsync(url, postData).Result;
result = response.Content.ReadAsStringAsync().Result;
}
catch (Exception ex)
{
result = ex.Message;
}
Logger<HanGuoLogisticsPic>.Debug($"HanGuoLogistics 返回數(shù)據(jù)：{result}");
return result;
}
/// <summary>
/// 參數(shù)上報
/// </summary>
public class ImageInfo
{
public string ticketsNum { get; set; }
public string file { get; set; }
public string workConsole { get; set; }
public string destination { get; set; }
}
/// <summary>
/// 返回信息
/// </summary>
public class ImageResult
{
public bool result { get; set; }
public string message { get; set; }
}
#endregion
}
}以上為個人經(jīng)驗，希望能給大家一個參考，也希望大家多多支持腳本之家。
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