使用ServiceStack客户端POST的序列化对象为null

时间:2014-04-30 16:16:20

标签: c# rest servicestack

我正在使用服务堆栈在C#中构建一个restful服务。

这是我的服务实现。

namespace cloudfileserver
{   
    [Route("/updatefile", "POST")]
    public class UpdateFile
    {
        public UserFile file { get; set; }
    }

    public class CloudFileService : Service
    {
        public InMemoryFileSystem filesystem { get; set; }
        private static readonly log4net.ILog logger = log4net.LogManager.GetLogger (typeof(CloudFileService));

        public void Post (UpdateFile request)
        {
            try{
                logger.Debug("File received is :"  + request.file);
                filesystem.addFileSynchronized (request.clientId, request.file);
            }catch(Exception e){
                logger.Debug(e);
                throw e;
            }
        }
    }
}

我通过以下servicestack客户端代码调用此服务:

JsonServiceClient client  = new JsonServiceClient(ENDPOINT);
UpdateFile arg = new UpdateFile();
UserFile file = new UserFile ("x.txt", "piyush");
file.SetFileContent (getByteArrayFromString ("Filecontent"), 0);
arg.file = file;
client.Post<Object>("/updatefile", arg);

问题在于,每当我通过上述客户端代码进行调用时,在服务器端收到的文件对象为NULL(我通过将其写入日志文件来验证)。

正在通过电汇发送的

Here is the File classFile课程为serialisable,因为我可以通过GET电话正确发送。{/ p>

知道这里可能出现什么问题吗?

1 个答案:

答案 0 :(得分:2)

我已经测试了您的方案,无法重现您遇到的问题。我建议您验证SetFileContent方法和getByteArrayFromString方法,因为那里可能有错误。随意发布该实现。

此外,如果您捕获了对服务器发出的HTTP请求,以确定问题所在,那将非常有用。

以下是自托管ServiceStack v4测试应用程序的完整工作源代码,它使用您概述的实现,我希望这会有所帮助。

using System;
using ServiceStack;
using System.Collections.Generic;

namespace v4
{
    class MainClass
    {
        // Assumed implementation of your getByteArrayFromString
        static byte[] getByteArrayFromString(string path)
        {
            return System.IO.File.ReadAllBytes(path);
        }

        public static void Main()
        {
            // Simple Self-Hosted Console App
            var appHost = new AppHost(500);
            appHost.Init();
            appHost.Start("http://*:9000/");

            // Test the service
            string filename = "image.png";
            JsonServiceClient client  = new JsonServiceClient("http://localhost:9000");

            // Create and set the file contents
            UserFile file = new UserFile (filename, "username");
            file.SetFileContent(getByteArrayFromString(filename), 0);

            // Post the file
            client.Post<Object>("/updatefile", new UpdateFile { file = file } );

            Console.ReadKey();
        }
    }

    public class AppHost : AppHostHttpListenerPoolBase
    {
        public AppHost(int poolSize) : base("Test Service", poolSize, typeof(TestService).Assembly) { }
        public override void Configure(Funq.Container container) { }
    }

    [Route("/updatefile","POST")]
    public class UpdateFile
    {
        public UserFile file { get; set; }
    }

    [Serializable]
    public class UserFile 
    {

        public string filepath { get; set;}
        public string owner { get; set;}
        public byte[] filecontent { get; set;}
        public long filesize { get; set;}
        public List<string> sharedwithclients { get; set;}
        public long versionNumber {get;set;}
        object privateLock = new object();

        public UserFile (string filepath, string owner)
        {      
            this.filepath = filepath;
            this.owner = owner;
            versionNumber = -1;
            filesize = 0;
            filecontent = new byte[0];
            sharedwithclients = new List<string>();
        }

        public void SetFileContent(byte[] contents, long version)
        {
            filecontent = contents;
            filesize = filecontent.Length;
            versionNumber = version;
        }
    }

    public class TestService : Service
    {
        public void Post(UpdateFile request)
        {
            // Request is populated correctly i.e. not null.
            Console.WriteLine(request.file.ToJson());
        }
    }
}