C#开发BIMFACE系列6 服务端API之获取文件信息

{
  "code" : "success",
  "data" : {
    "createTime" : "2017-11-09 13:25:03", // 文件的上传时间
    "etag" : "19349858cjs98ericu989",     // 存储文件的额外属性
    "fileId" : 1216113551663296,          // 文件编号
    "length" : 39044,                     // 文件的大小
    "name" : "-1F.rvt",                   // 文件的名称
    "status" : "success",                 // 文件的上传状态
    "suffix" : "rvt"                      // 文件的后缀名
  },
  "message" : ""
}

 1 /// <summary>
 2 ///   根据文件ID获取文件详细信息
 3 /// </summary>
 4 /// <param name="accessToken">令牌</param>
 5 /// <param name="fileId">文件ID</param>
 6 /// <returns></returns>
 7 public virtual FileInfoGetResponse GetFileInfo(string accessToken, string fileId)
 8 {
 9     //GET https://file.bimface.com/files/{fileId}
10     string url = string.Format(BimfaceConstants.FILE_HOST + "/files/{0}", fileId);
11 
12     BimFaceHttpHeaders headers = new BimFaceHttpHeaders();
13     headers.AddOAuth2Header(accessToken);
14 
15     try
16     {
17         FileInfoGetResponse response;
18 
19         HttpManager httpManager = new HttpManager(headers);
20         HttpResult httpResult = httpManager.Get(url);
21         if (httpResult.Status == HttpResult.STATUS_SUCCESS)
22         {
23             response = httpResult.Text.DeserializeJsonToObject<FileInfoGetResponse>();
24         }
25         else
26         {
27             response = new FileInfoGetResponse
28             {
29                 Message = httpResult.RefText
30             };
31         }
32 
33         return response;
34     }
35     catch (Exception ex)
36     {
37         throw new Exception("[根据文件ID获取文件详细信息]发生异常！", ex);
38     }
39 }

其中引用的 httpManager.Get() 方法如下：

/// <summary>
/// HTTP-GET方法，(不包含body数据)。
/// 发送 HTTP 请求并返回来自 Internet 资源的响应(HTML代码)
/// </summary>
/// <param name="url">请求目标URL</param>
/// <returns>HTTP-GET的响应结果</returns>
public HttpResult Get(string url)
{
    return RequestString(url, null, HttpMethod.GET, null);
}

 1 /// <summary>
 2 ///  HTTP请求(包含文本的body数据)
 3 /// </summary>
 4 /// <param name="url">请求目标URL</param>
 5 /// <param name="data">主体数据(普通文本或者JSON文本)。如果参数中有中文，请使用合适的编码方式进行编码，例如：gb2312或者utf-8</param>
 6 /// <param name="method">请求的方法。请使用 HttpMethod 的枚举值</param>
 7 /// <param name="contentType"><see langword="Content-type" /> HTTP 标头的值。请使用 ContentType 类的常量来获取</param>
 8 /// <returns></returns>
 9 private HttpResult RequestString(string url, string data, string method, string contentType)
10 {
11     HttpResult httpResult = new HttpResult();
12     HttpWebRequest httpWebRequest = null;
13 
14     try
15     {
16         httpWebRequest = WebRequest.Create(url) as HttpWebRequest;
17         httpWebRequest.Method = method;
18         httpWebRequest.Headers = HeaderCollection;
19         httpWebRequest.CookieContainer = CookieContainer;
20         if (!string.IsNullOrWhiteSpace(contentType))
21         {
22             httpWebRequest.ContentType = contentType;// 此属性的值存储在WebHeaderCollection中。如果设置了WebHeaderCollection，则属性值将丢失。所以放置在Headers 属性之后设置
23         }
24         httpWebRequest.UserAgent = _userAgent;
25         httpWebRequest.AllowAutoRedirect = _allowAutoRedirect;
26         httpWebRequest.ServicePoint.Expect100Continue = false;
27 
28         if (data != null)
29         {
30             httpWebRequest.AllowWriteStreamBuffering = true;
31             using (Stream requestStream = httpWebRequest.GetRequestStream())
32             {
33                 requestStream.Write(EncodingType.GetBytes(data), 0, data.Length);//将请求参数写入请求流中
34                 requestStream.Flush();
35             }
36         }
37 
38         HttpWebResponse httpWebResponse = httpWebRequest.GetResponse() as HttpWebResponse;
39         if (httpWebResponse != null)
40         {
41             GetResponse(ref httpResult, httpWebResponse);
42             httpWebResponse.Close();
43         }
44     }
45     catch (WebException webException)
46     {
47         GetWebExceptionResponse(ref httpResult, webException);
48     }
49     catch (Exception ex)
50     {
51         GetExceptionResponse(ref httpResult, ex, method, contentType);
52     }
53     finally
54     {
55         if (httpWebRequest != null)
56         {
57             httpWebRequest.Abort();
58         }
59     }
60 
61     return httpResult;
62 }

 在BIMFACE的控制台中可以看到我们上传的文件列表

可以看到获取文件信息成功，返回了以下信息：文件的上传时间、存储文件的额外属性、文件编号、文件的大小、文件的名称、文件的上传状态、文件的后缀名。
测试程序如下：

 1 // 获取文件信息
 2 protected void btnGetFileInfo_Click(object sender, EventArgs e)
 3 {
 4     txtFileInfo.Text = string.Empty;
 5 
 6     string token = txtAccessToken.Text;
 7     string fileId = txtFileId.Text;
 8 
 9     FileApi api = new FileApi();
10     FileInfoGetResponse response = api.GetFileInfo(token, fileId);
11 
12     txtFileInfo.Text = response.Code
13                      + Environment.NewLine
14                      + response.Message
15                      + Environment.NewLine
16                      + response.Data.ToString();
17 }