/// <summary>
/// 新增其他类型永久素材
/// </summary>
/// <param name="filePathName">指定包含完整路径的文件名</param>
/// <param name="videoDescription">上传视频素材时，需提供视频的描述信息</param>
/// <returns>新增永久素材的结果</returns>
public WeChatResult <MaterialResult> AddMaterial(string filePathName, VideoDescription videoDescription = null)
{
string accessToken = connect.GetAccessToken();
string type = MimeMapping.GetMimeMapping(filePathName); //获取文件的Mime-Type
type = type.Substring(0, type.IndexOf('/')); //提取Mime-Type的前部分
string fileName = Path.GetFileName(filePathName);
using (Stream fileStream = new FileStream(filePathName, FileMode.Open))
{
if ("image".Equals(type) && fileStream.Length < 64 * 1024)
{
type = "thumb";//如果文件属于图片，而且小于64KB的，类型改成缩略图（thumb）
}
else if ("audio".Equals(type))
{
type = "voice";
}
string url = $"https://api.weixin.qq.com/cgi-bin/material/add_material?access_token={accessToken}&type={type}";
UploadFileParam fileParam = new UploadFileParam(url, fileName, fileStream);
if (videoDescription != null)
{
fileParam.PostParameters.Add("title", videoDescription.title);
fileParam.PostParameters.Add("introduction", videoDescription.introduction);
}
string resultStr = SimulateRequest.UploadFile(fileParam);
WeChatResult <MaterialResult> weChatResult = new WeChatResult <MaterialResult>(resultStr);
if (weChatResult.errcode != WeChatErrorCode.SUCCESS)
{
SystemLogHelper.Warn(MethodBase.GetCurrentMethod(), $"上传图文消息内的图片获取URLGetUrlByUpdateImg，微信服务报错：{weChatResult}");
}
return(weChatResult);
}
}
/// <summary>
/// 批量创建云图数据
/// </summary>
/// <param name="fileName">文件名，如：cloudmap.xlsx</param>
/// <param name="batchData">云图数据批量参数</param>
/// <returns>批量创建任务结果</returns>
public CloudBatchDataResult CreateBatchData(string fileName, BatchDataParam batchData)
{
if (batchData == null)
{
throw new ArgumentNullException("batchData");
}
UploadFileParam uploadFileParam = new UploadFileParam("https://yuntuapi.amap.com/datamanage/data/batchcreate",
fileName, batchData.file);
uploadFileParam.FileNameKey = "file";
uploadFileParam.PostParameters = batchData.GenerateParams();
string resultStr = WebRequestHelper.UploadFile(uploadFileParam);
CloudBatchDataResult resultObj = JsonConvert.DeserializeObject <CloudBatchDataResult>(resultStr);
return(resultObj);
}
/// <summary>
/// 上传文件
/// </summary>
/// <param name="parameter">包含文件二进制数据的上传参数</param>
/// <returns>上传后的响应结果</returns>
public static string UploadFile(UploadFileParam parameter)
{
using (MemoryStream memoryStream = new MemoryStream())
{
// 1.分界线
string boundary = string.Format("----{0}", DateTime.Now.Ticks.ToString("x")), // 分界线可以自定义参数
beginBoundary = string.Format("--{0}\r\n", boundary),
endBoundary = string.Format("\r\n--{0}--\r\n", boundary);
byte[] beginBoundaryBytes = parameter.Encoding.GetBytes(beginBoundary),
endBoundaryBytes = parameter.Encoding.GetBytes(endBoundary);
// 2.组装开始分界线数据体 到内存流中
memoryStream.Write(beginBoundaryBytes, 0, beginBoundaryBytes.Length);
// 3.组装 上传文件附加携带的参数 到内存流中
if (parameter.PostParameters != null && parameter.PostParameters.Count > 0)
{
foreach (KeyValuePair <string, string> keyValuePair in parameter.PostParameters)
{
string parameterHeaderTemplate = string.Format("Content-Disposition: form-data; name=\"{0}\"\r\n\r\n{1}\r\n{2}", keyValuePair.Key, keyValuePair.Value, beginBoundary);
byte[] parameterHeaderBytes = parameter.Encoding.GetBytes(parameterHeaderTemplate);
memoryStream.Write(parameterHeaderBytes, 0, parameterHeaderBytes.Length);
}
}
// 4.组装文件头数据体 到内存流中
string fileHeaderTemplate = string.Format("Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"\r\nContent-Type: application/octet-stream\r\n\r\n", parameter.FileNameKey, parameter.FileNameValue);
byte[] fileHeaderBytes = parameter.Encoding.GetBytes(fileHeaderTemplate);
memoryStream.Write(fileHeaderBytes, 0, fileHeaderBytes.Length);
// 5.组装文件流 到内存流中
byte[] buffer = new byte[1024 * 1024 * 1];
int size = parameter.FileStream.Read(buffer, 0, buffer.Length);
while (size > 0)
{
memoryStream.Write(buffer, 0, size);
size = parameter.FileStream.Read(buffer, 0, buffer.Length);
}
// 6.组装结束分界线数据体 到内存流中
memoryStream.Write(endBoundaryBytes, 0, endBoundaryBytes.Length);
// 7.获取二进制数据
byte[] postBytes = memoryStream.ToArray();
// 8.HttpWebRequest 组装
HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(new Uri(parameter.Url, UriKind.RelativeOrAbsolute));
webRequest.Method = "POST";
webRequest.Timeout = int.MaxValue;
webRequest.ContentType = string.Format("multipart/form-data; boundary={0}", boundary);
webRequest.ContentLength = postBytes.Length;
if (Regex.IsMatch(parameter.Url, "^https://"))
{
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls;
ServicePointManager.ServerCertificateValidationCallback = CheckValidationResult;
}
// 9.写入上传请求数据
using (Stream requestStream = webRequest.GetRequestStream())
{
requestStream.Write(postBytes, 0, postBytes.Length);
requestStream.Close();
}
// 10.获取响应
using (HttpWebResponse webResponse = (HttpWebResponse)webRequest.GetResponse())
{
using (StreamReader reader = new StreamReader(webResponse.GetResponseStream(), parameter.Encoding))
{
string body = reader.ReadToEnd();
reader.Close();
return(body);
}
}
}
}
