使用Restsharp PCL上传到Dropbox
我正在尝试使用RestSharp.Portable使用PCL将文件上传到Dropbox。 我的代码是
public async Task UploadFile(Stream fileStream, string fileName) { var client = new RestClient("https://api-content.dropbox.com"); client.ClearEncodings(); client.AddEncoding("gzip", new GzipEncoding()); var request = new RestRequest("1/files/dropbox/Apps/FileBolt", HttpMethod.Post); request.AddHeader("Authorization", string.Format("Bearer {0}", Token)); request.AddParameter("file", fileName); byte[] bytes = null; long numBytes = fileStream.Length; using (var br = new BinaryReader(fileStream)) { bytes = br.ReadBytes((int) numBytes); } request.AddFile(new FileParameter { ContentLength = numBytes, FileName = fileName, Name = "file", Value = bytes }); var boxItemResponse = await client.Execute(request); if (boxItemResponse != null && boxItemResponse.Data != null) { return boxItemResponse.Data; } return null; } 这是正在进行的实际REST调用
POST https://api-content.dropbox.com/1/files/dropbox/Apps/FileBolt HTTP/1.1 Authorization: Bearer XXXXXXXXXXXXXXXXXXXXXXXX Accept: application/json, text/json, text/x-json, text/javascript, application/xml, text/xml Accept-Encoding: gzip Content-Type: multipart/form-data; boundary="0ab9510a-e347-4871-96c0-14b11b382435" Host: api-content.dropbox.com Content-Length: 20205 Expect: 100-continue --0ab9510a-e347-4871-96c0-14b11b382435 Content-Type: text/plain; charset=utf-8 Content-Disposition: form-data; name=file driver.png --0ab9510a-e347-4871-96c0-14b11b382435 Content-Length: 19865 Content-Disposition: form-data; name=file; filename=driver.png; filename*=utf-8''driver.png {BYTES} --0ab9510a-e347-4871-96c0-14b11b382435--
而来自DropBox的回应
HTTP/1.1 400 Bad Request Server: nginx Date: Sat, 22 Mar 2014 12:16:07 GMT Content-Type: application/json Transfer-Encoding: chunked Connection: keep-alive 2e {"error": {"file": "Expecting a file upload"}} 0
我还删除了request.AddParameter("file", fileName); 来自Dropbox的回复
{"error": "Forbidden"}
我在这做错了什么？
注意：此实现需要在PCL中，它将在WP8，Xamarin.Android，Xamarin.IOS，Windows WPF之间共享。
更新：
虽然之前我曾尝试过PUT（files_put）api调用，但我现在已经开始工作，通过更改沙箱而不是dropbox的路径，因为我的应用只能访问自己的文件夹。 这是可以帮助他人的代码。
public async Task UploadFile(Stream fileStream, string fileName, string md5 = null) { var client = new RestClient("https://api-content.dropbox.com"); client.ClearEncodings(); client.AddEncoding("gzip", new GzipEncoding()); var request = new RestRequest(string.Format("1/files_put/sandbox/{0}", fileName), HttpMethod.Put); request.AddHeader("Authorization", string.Format("Bearer {0}", Token)); byte[] bytes = null; long numBytes = fileStream.Length; using (var br = new BinaryReader(fileStream)) { bytes = br.ReadBytes((int) numBytes); } var body = new Parameter { ContentType = new MediaTypeHeaderValue("application/octet-stream"), Name = "file", Value = bytes, Type = ParameterType.RequestBody, ValidateOnAdd = false }; request.Parameters.Add(body); var response = await client.Execute(request); if (response != null && response.Data != null) { return response.Data; } return null; }
这是响应实体
using System; using Newtonsoft.Json; namespace Entities.Cloud.Dropbox { public class File { [JsonProperty(PropertyName = "size")] public string FriendlySize { get; set; } [JsonProperty(PropertyName = "bytes")] public int Size { get; set; } [JsonProperty(PropertyName = "path")] public string Path { get; set; } [JsonProperty(PropertyName = "is_dir")] public bool IsDirectory { get; set; } [JsonProperty(PropertyName = "is_deleted")] public bool IsDeleted { get; set; } [JsonProperty(PropertyName = "rev")] public string Revision { get; set; } [JsonProperty(PropertyName = "hash")] public string Hash { get; set; } [JsonProperty(PropertyName = "thumb_exists")] public bool ThumbnailExists { get; set; } [JsonProperty(PropertyName = "icon")] public string Icon { get; set; } [JsonProperty(PropertyName = "modified")] public DateTime Modified { get; set; } [JsonProperty(PropertyName = "root")] public string Root { get; set; } } }
/files (POST)不是多部分表单上载。 正如文档所说“……整个POST主体将被视为文件”。
我会就如何构建正确的HTTP请求给出更多建议，但老实说，我从来没有使用过这个端点，我建议你也不要这样做。 正如文档所说，“我们建议您使用/files_put因为它的界面更简单。” 我建议使用它，只是添加文件内容作为请求的主体。