LBS云端数据删除和上传

这里采用C#模拟表单提交，实现LBS云端删除和csv格式文件的上传。

删除：

 /// <summary>
         /// 从LBS云端删除数据
         /// </summary>
         /// <param name="ak">百度密钥</param>
         /// <param name="geotable_id">LBS云geotableID</param>
         /// <param name="columnName">字段名称</param>
         /// <param name="columnValue">值(为空时则删除所有匹配的数据)</param>
         /// <returns></returns>
         public string DeleteByName(string ak, string geotable_id, string columnName, string columnValue)
         {
            string boundary = "---------------------------" + DateTime.Now.Ticks.ToString("x");
             //请求
             WebRequest req = WebRequest.Create(@"http://api.map.baidu.com/geodata/v2/poi/delete");
             req.Method = "POST";
             req.ContentType = "multipart/form-data; boundary=" + boundary;
             //组织表单数据
             StringBuilder sb = new StringBuilder();
             sb.Append("--" + boundary);
             sb.Append("\r\n");

             sb.Append("Content-Disposition: form-data; name=\"ak\"");
             sb.Append("\r\n\r\n");
             sb.Append(ak);
             sb.Append("\r\n");
             sb.Append("--" + boundary);
             sb.Append("\r\n");

             sb.Append("Content-Disposition: form-data; name=\"geotable_id\"");
             sb.Append("\r\n\r\n");
             sb.Append(geotable_id);
             sb.Append("\r\n");
             sb.Append("--" + boundary);
             sb.Append("\r\n");

             sb.Append("Content-Disposition: form-data; name=\"" + columnName + "\"");
             sb.Append("\r\n\r\n");
             sb.Append(columnValue);
             sb.Append("\r\n");
             sb.Append("--" + boundary);
             sb.Append("\r\n");

             string head = sb.ToString();
             byte[] form_data = Encoding.UTF8.GetBytes(head);
             //结尾
             byte[] foot_data = Encoding.UTF8.GetBytes("\r\n--" + boundary + "--\r\n");

             //post总长度
             long length = form_data.Length +  foot_data.Length;
             req.ContentLength = length;
             Stream requestStream = req.GetRequestStream();

             //发送表单参数
             requestStream.Write(form_data, , form_data.Length);

             //结尾
             requestStream.Write(foot_data, , foot_data.Length);
             requestStream.Close();

             //响应
             WebResponse pos = req.GetResponse();
             StreamReader sr = new StreamReader(pos.GetResponseStream(), Encoding.UTF8);
             string html = sr.ReadToEnd().Trim();
             sr.Close();
             if (pos != null)
             {
                 pos.Close();
                 pos = null;
             }
             if (req != null)
             {
                 req = null;
             }
             return html;
         }

上传csv格式文件:

   /// <summary>
         /// 模拟表单提交，实现提交csv格式文件的上传
         /// </summary>
         /// <param name="ak"></param>
         /// <param name="geotable_id"></param>
         /// <param name="file"></param>
         /// <returns></returns>
         public string UploadCSVFile(string ak, string geotable_id, string filePath)
         {
             string boundary = "---------------------------" + DateTime.Now.Ticks.ToString("x");
             //请求
             WebRequest req = WebRequest.Create(@"http://api.map.baidu.com/geodata/v2/poi/upload");
             req.Method = "POST";
             req.ContentType = "multipart/form-data; boundary=" + boundary;
             //组织表单数据
             StringBuilder sb = new StringBuilder();
             sb.Append("--" + boundary);
             sb.Append("\r\n");
             sb.Append("Content-Disposition: form-data; name=\"ak\"");
             sb.Append("\r\n\r\n");
             sb.Append(ak);
             sb.Append("\r\n");
             sb.Append("--" + boundary);
             sb.Append("\r\n");
             sb.Append("Content-Disposition: form-data; name=\"geotable_id\"");
             sb.Append("\r\n\r\n");
             sb.Append(geotable_id);
             sb.Append("\r\n");
             sb.Append("--" + boundary);
             sb.Append("\r\n");
             sb.Append("Content-Disposition: form-data; name=\"poi_list\"; filename=\"e:\\databox.csv\"");
             sb.Append("\r\n");
             sb.Append("Content-Type: application/octet-stream");
             sb.Append("\r\n\r\n");

             string head = sb.ToString();
             byte[] form_data = Encoding.UTF8.GetBytes(head);
             //结尾
             byte[] foot_data = Encoding.UTF8.GetBytes("\r\n--" + boundary + "--\r\n");
             //文件
             FileStream fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read);
             //post总长度
             long length = form_data.Length + fileStream.Length + foot_data.Length;
             req.ContentLength = length;
             Stream requestStream = req.GetRequestStream();

             //发送表单参数
             requestStream.Write(form_data, , form_data.Length);
             //文件内容
             byte[] buffer = new Byte[checked((uint)Math.Min(, (int)fileStream.Length))];
             int bytesRead = ;
             while ((bytesRead = fileStream.Read(buffer, , buffer.Length)) != )
                 requestStream.Write(buffer, , bytesRead);
             //结尾
             requestStream.Write(foot_data, , foot_data.Length);
             requestStream.Close();

             //响应
             WebResponse pos = req.GetResponse();
             StreamReader sr = new StreamReader(pos.GetResponseStream(), Encoding.UTF8);
             string html = sr.ReadToEnd().Trim();
             sr.Close();
             if (pos != null)
             {
                 pos.Close();
                 pos = null;
             }
             if (req != null)
             {
                 req = null;
             }
             return html;
         } 

    调用：

    string ak = System.Configuration.ConfigurationManager.AppSettings["ak"].ToString();
    string geotableID = System.Configuration.ConfigurationManager.AppSettings["geotableID"].ToString();
    DeleteByName(ak, geotableID, "title", "");          //删除所有数据
    UploadCSVFile(ak, geotableID, @"E:\databox.csv");   //上传数据