/// <summary>
/// 发送图片消息
/// </summary>
/// <param name="condtion"></param>
/// <returns></returns>
internal static ReplayBase SendImgMsg(EasemobSendIMgMessageRequestModel condtion)
{
string url = easemobUrl + "chatfiles";
ReplayBase result = new ReplayBase();
EasemobUploadFileRequestModel fileinfo = HttpUploadFile(url, condtion.msg.url);//上传图片
condtion.msg = new EasemobPicMesModel()
{
filename = fileinfo.filename,
secret = fileinfo.secret,
url = easemobUrl + "chatfiles/" + fileinfo.uuid,
};
string postDate = JsonConvert.SerializeObject(condtion);//发送消息
result = RequestUrl(easemobUrl + "messages", "POST", postDate, queryToken());
return(result);
}
/// <summary>
/// Http上传文件
/// </summary>
/// <param name="url">目标服务器地址</param>
/// <param name="path">文件的地址</param>
/// <returns></returns>
public static EasemobUploadFileRequestModel HttpUploadFile(string url, string path)
{
// 设置参数
HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
CookieContainer cookieContainer = new CookieContainer();
request.CookieContainer = cookieContainer;
request.AllowAutoRedirect = true;
request.Method = "POST";
request.Headers.Add("Authorization", "Bearer " + queryToken()); //环信特有
request.Headers.Add("restrict-access", "true"); //环信特有
string boundary = DateTime.Now.Ticks.ToString("X"); // 随机分隔线
request.ContentType = "multipart/form-data;charset=utf-8;boundary=" + boundary;
byte[] itemBoundaryBytes = Encoding.UTF8.GetBytes("\r\n--" + boundary + "\r\n");
byte[] endBoundaryBytes = Encoding.UTF8.GetBytes("\r\n--" + boundary + "--\r\n");
int pos = path.LastIndexOf("\\");
string fileName = path.Substring(pos + 1);
long filelenght = 0;
//请求头部信息
StringBuilder sbHeader = new StringBuilder(string.Format("Content-Disposition:form-data;name=\"file\";filename=\"{0}\"\r\nContent-Type:application/octet-stream\r\n\r\n", fileName));
byte[] postHeaderBytes = Encoding.UTF8.GetBytes(sbHeader.ToString());
FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read);
byte[] bArr = new byte[fs.Length];
fs.Read(bArr, 0, bArr.Length);
filelenght = fs.Length;
fs.Close();
Stream postStream = request.GetRequestStream();
postStream.Write(itemBoundaryBytes, 0, itemBoundaryBytes.Length);
postStream.Write(postHeaderBytes, 0, postHeaderBytes.Length);
postStream.Write(bArr, 0, bArr.Length);
postStream.Write(endBoundaryBytes, 0, endBoundaryBytes.Length);
postStream.Close();
//发送请求并获取相应回应数据
HttpWebResponse response = request.GetResponse() as HttpWebResponse;
//直到request.GetResponse()程序才开始向目标网页发送Post请求
Stream instream = response.GetResponseStream();
StreamReader sr = new StreamReader(instream, Encoding.UTF8);
//返回结果网页（html）代码
string content = sr.ReadToEnd();
content = content.Replace("share-", "");
dynamic jo = JsonConvert.DeserializeObject(content);
EasemobUploadFileRequestModel result = new EasemobUploadFileRequestModel()
{
secret = jo.entities[0].secret,
uuid = jo.entities[0].uuid,
filename = fileName,
length = filelenght
};
return(result);
}