Question

我正在玩ServiceStack并试图了解这项技术。

我有一个非常简单的设置（完整的解决方案是available for download）：

使用ServiceStack独立AppHost（自托管）
我启动服务器
然后我查询Article数据列表。

我为ServiceStack.Pluging.MsgPack安装了nuget包，并添加了引用并正确设置了AppHost插件，如下面的main()代码所示。

课程DTO和服务

这些是我使用的数据类，DTO和服务类：

public class Article : IReturn<Article>
{
    public string AR_REF { get; set; }
    public string AR_DESIGN { get; set; }
    public string AR_CODEBARRE { get; set; }
    public string FA_CODEFAMILLE { get; set; }
    public string CT_INTITULE { get; set; }
}

public class Articles : IReturn<List<Article>> { }

public class ArticleService : Service
{
    public List<Article> Get(Articles request) {
        return new List<Article>() { 
            new Article() {AR_CODEBARRE = "987654", AR_REF = "1002.ARRGHHH", AR_DESIGN = "BLAH BLAH TEST", CT_INTITULE = "ACME", FA_CODEFAMILLE = "50FAM"} ,
            new Article() {AR_CODEBARRE = "123456", AR_REF = "515.VEROTEST", AR_DESIGN = "THIS IS A TEST", CT_INTITULE = "ACME", FA_CODEFAMILLE = "10FAM"} ,
            new Article() {AR_CODEBARRE = "987654", AR_REF = "1002.ARRGHHH", AR_DESIGN = "BLAH BLAH TEST", CT_INTITULE = "ACME", FA_CODEFAMILLE = "50FAM"} ,
            new Article() {AR_CODEBARRE = "123456", AR_REF = "515.VEROTEST", AR_DESIGN = "THIS IS A TEST", CT_INTITULE = "ACME", FA_CODEFAMILLE = "10FAM"} ,
            new Article() {AR_CODEBARRE = "987654", AR_REF = "1002.ARRGHHH", AR_DESIGN = "BLAH BLAH TEST", CT_INTITULE = "ACME", FA_CODEFAMILLE = "50FAM"} ,
            new Article() {AR_CODEBARRE = "123456", AR_REF = "515.VEROTEST", AR_DESIGN = "THIS IS A TEST", CT_INTITULE = "ACME", FA_CODEFAMILLE = "10FAM"} ,
            new Article() {AR_CODEBARRE = "987654", AR_REF = "1002.ARRGHHH", AR_DESIGN = "BLAH BLAH TEST", CT_INTITULE = "ACME", FA_CODEFAMILLE = "50FAM"} ,
            new Article() {AR_CODEBARRE = "123456", AR_REF = "515.VEROTEST", AR_DESIGN = "THIS IS A TEST", CT_INTITULE = "ACME", FA_CODEFAMILLE = "10FAM"} ,
            new Article() {AR_CODEBARRE = "987654", AR_REF = "1002.ARRGHHH", AR_DESIGN = "BLAH BLAH TEST", CT_INTITULE = "ACME", FA_CODEFAMILLE = "50FAM"} ,
            new Article() {AR_CODEBARRE = "123456", AR_REF = "515.VEROTEST", AR_DESIGN = "THIS IS A TEST", CT_INTITULE = "ACME", FA_CODEFAMILLE = "10FAM"} ,
            new Article() {AR_CODEBARRE = "987654", AR_REF = "1002.ARRGHHH", AR_DESIGN = "BLAH BLAH TEST", CT_INTITULE = "ACME", FA_CODEFAMILLE = "50FAM"} ,
            new Article() {AR_CODEBARRE = "123456", AR_REF = "515.VEROTEST", AR_DESIGN = "THIS IS A TEST", CT_INTITULE = "ACME", FA_CODEFAMILLE = "10FAM"} ,
            new Article() {AR_CODEBARRE = "987654", AR_REF = "1002.ARRGHHH", AR_DESIGN = "BLAH BLAH TEST", CT_INTITULE = "ACME", FA_CODEFAMILLE = "50FAM"} ,
            new Article() {AR_CODEBARRE = "123456", AR_REF = "515.VEROTEST", AR_DESIGN = "THIS IS A TEST", CT_INTITULE = "ACME", FA_CODEFAMILLE = "10FAM"} ,
            new Article() {AR_CODEBARRE = "987654", AR_REF = "1002.ARRGHHH", AR_DESIGN = "BLAH BLAH TEST", CT_INTITULE = "ACME", FA_CODEFAMILLE = "50FAM"} ,
            new Article() {AR_CODEBARRE = "123456", AR_REF = "515.VEROTEST", AR_DESIGN = "THIS IS A TEST", CT_INTITULE = "ACME", FA_CODEFAMILLE = "10FAM"} ,            
        };
    }
}

所有这一切都是允许客户获得16个虚拟Articles的列表。

服务器和客户端请求

static void Main() {
    var appHost = new AppHost();
    appHost.Plugins.Add(new MsgPackFormat());
    appHost.Init();
    appHost.Start("http://localhost:8883");

    // Fails when calling client.Get()
    var client = new MsgPackServiceClient("http://localhost:8883");
    List<Article> response = client.Get(new Articles());

    appHost.Stop();
}

将AppHost定义为：

public class AppHost : AppHostHttpListenerBase
{
    static readonly ConfigurationResourceManager AppSettings = new ConfigurationResourceManager();
    public AppHost() : base("Test", typeof(Article).Assembly) { }
    public override void Configure(Funq.Container container) {  }
}

会发生什么

client.Get(...)的来电失败，SerializationException说： 解包器尚未读取任何数据。解包器可能永远不会读取或底层流为空。

当我使用超过15条记录的MsgPackServiceClient()时会发生异常奇怪的是，如果我返回15个或更少的Articles个实例，它就会起作用。
如果我使用JsvServiceClient()或JsonServiceClient()代替，我可以回复数千条记录。

我真的不知道我是做错了什么，还是在这里有其他事情发生。

其他信息和下载

我正在使用VS2012和通过nuget安装的ServiceStack 3.9.43（包括MsgPack插件）。
无论编译选项如何（AnyCPU / x86），都会出现此问题。未启用代码优化（每个解决方案/项目选项都是默认选项）。

你可以download the complete solution自己尝试一下。

Answer 1

所以，我不确定问题是什么。它似乎特定于在AppHost的同一应用程序中使用MsgPackServiceClient。如果您将浏览器的请求发送到类似http://localhost:8883/Articles?format=x-msgpack的内容，则它似乎有效。

编写测试（如底部的测试）似乎确认MessagePackSerializer工作正常。

添加写入OutputStream的响应过滤器（下面）似乎可以解决您的问题。我尝试了列表中的16和32条记录。

希望这有帮助。

    appHost.ResponseFilters.Add((httpReq, httpRes, dto) =>
    {
        if (httpReq.ResponseContentType == ContentType.MsgPack)
        {
            using (var ms = new MemoryStream())
            {
                var serializer = MessagePackSerializer.Create(dto.GetType());
                serializer.PackTo(Packer.Create(ms), dto);

                var bytes = ms.ToArray();

                var listenerResponse = (HttpListenerResponse)httpRes.OriginalResponse;
                listenerResponse.OutputStream.Write(bytes, 0, bytes.Length);
                httpRes.EndServiceStackRequest();
            }
        }
    });

MessagePackSerializer测试

    [Test]
    public void test()
    {
        var arts = new List<Article>() { 
            new Article() {AR_CODEBARRE = "987654", AR_REF = "1002.ARRGHHH", AR_DESIGN = "BLAH BLAH TEST", CT_INTITULE = "ACME", FA_CODEFAMILLE = "50FAM"} ,
            new Article() {AR_CODEBARRE = "123456", AR_REF = "515.VEROTEST", AR_DESIGN = "THIS IS A TEST", CT_INTITULE = "ACME", FA_CODEFAMILLE = "10FAM"} ,
            new Article() {AR_CODEBARRE = "987654", AR_REF = "1002.ARRGHHH", AR_DESIGN = "BLAH BLAH TEST", CT_INTITULE = "ACME", FA_CODEFAMILLE = "50FAM"} ,
            new Article() {AR_CODEBARRE = "123456", AR_REF = "515.VEROTEST", AR_DESIGN = "THIS IS A TEST", CT_INTITULE = "ACME", FA_CODEFAMILLE = "10FAM"} ,
            new Article() {AR_CODEBARRE = "987654", AR_REF = "1002.ARRGHHH", AR_DESIGN = "BLAH BLAH TEST", CT_INTITULE = "ACME", FA_CODEFAMILLE = "50FAM"} ,
            new Article() {AR_CODEBARRE = "123456", AR_REF = "515.VEROTEST", AR_DESIGN = "THIS IS A TEST", CT_INTITULE = "ACME", FA_CODEFAMILLE = "10FAM"} ,
            new Article() {AR_CODEBARRE = "987654", AR_REF = "1002.ARRGHHH", AR_DESIGN = "BLAH BLAH TEST", CT_INTITULE = "ACME", FA_CODEFAMILLE = "50FAM"} ,
            new Article() {AR_CODEBARRE = "123456", AR_REF = "515.VEROTEST", AR_DESIGN = "THIS IS A TEST", CT_INTITULE = "ACME", FA_CODEFAMILLE = "10FAM"} ,
            new Article() {AR_CODEBARRE = "987654", AR_REF = "1002.ARRGHHH", AR_DESIGN = "BLAH BLAH TEST", CT_INTITULE = "ACME", FA_CODEFAMILLE = "50FAM"} ,
            new Article() {AR_CODEBARRE = "123456", AR_REF = "515.VEROTEST", AR_DESIGN = "THIS IS A TEST", CT_INTITULE = "ACME", FA_CODEFAMILLE = "10FAM"} ,
            new Article() {AR_CODEBARRE = "987654", AR_REF = "1002.ARRGHHH", AR_DESIGN = "BLAH BLAH TEST", CT_INTITULE = "ACME", FA_CODEFAMILLE = "50FAM"} ,
            new Article() {AR_CODEBARRE = "123456", AR_REF = "515.VEROTEST", AR_DESIGN = "THIS IS A TEST", CT_INTITULE = "ACME", FA_CODEFAMILLE = "10FAM"} ,
            new Article() {AR_CODEBARRE = "987654", AR_REF = "1002.ARRGHHH", AR_DESIGN = "BLAH BLAH TEST", CT_INTITULE = "ACME", FA_CODEFAMILLE = "50FAM"} ,
            new Article() {AR_CODEBARRE = "123456", AR_REF = "515.VEROTEST", AR_DESIGN = "THIS IS A TEST", CT_INTITULE = "ACME", FA_CODEFAMILLE = "10FAM"} ,
            new Article() {AR_CODEBARRE = "987654", AR_REF = "1002.ARRGHHH", AR_DESIGN = "BLAH BLAH TEST", CT_INTITULE = "ACME", FA_CODEFAMILLE = "50FAM"} ,
            new Article() {AR_CODEBARRE = "123456", AR_REF = "515.VEROTEST", AR_DESIGN = "THIS IS A TEST", CT_INTITULE = "ACME", FA_CODEFAMILLE = "10FAM"} ,            
        };

        var serializer = MessagePackSerializer.Create<List<Article>>();

        var ms = new MemoryStream();
        serializer.PackTo(Packer.Create(ms), arts);
        ms.Position = 0;
        try
        {
            var obj = serializer.Unpack(ms);
            Assert.IsNotNull(obj);
        }
        catch (Exception ex)
        {
            throw ex;
        }

        ms.Close();
    }

获取数据时，ServiceStack MsgPackServiceClient失败但JsonServiceClient工作

课程DTO和服务

服务器和客户端请求

会发生什么

其他信息和下载

1 个答案: