[英]ServiceStack JsonServiceClient Silently Failing When Deserializing
[英]ServiceStack MsgPackServiceClient fails when fetching data but JsonServiceClient works
我正在与ServiceStack一起玩耍,并做了一些简单的步骤来尝试了解这项技术。
我有一个非常简单的设置(完整的解决方案可下载 ):
Article
数据。 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。
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"} ,
};
}
}
这一切都是为了让客户获得16 Articles
虚拟Articles
的列表。
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) { }
}
调用client.Get(...)
失败,并显示SerializationException
:
解包程序尚未读取任何数据。 解压缩程序可能永远不会读取或基础流为空。
当我将MsgPackServiceClient()
与超过15条记录一起使用时,会发生异常。
奇怪的是,如果我返回15个或更少的Articles
实例,它将起作用。
如果我改用JsvServiceClient()
或JsonServiceClient()
,则返回数千条记录没有问题。
我真的不知道我是在做错什么,还是在做其他事情。
我正在将VS2012与通过nuget安装的ServiceStack 3.9.43(包括MsgPack插件)一起使用。
无论使用哪种编译选项(AnyCPU / x86),都会出现此问题。 没有启用代码优化(每个解决方案/项目选项都是默认选项)。
您可以下载完整的解决方案 ,然后自己尝试。
因此,我不确定是什么问题。 似乎特定于在AppHost的同一应用程序中使用MsgPackServiceClient。 如果您从浏览器向http://localhost:8883/Articles?format=x-msgpack
之类的请求发出请求,它似乎可以正常工作。
编写测试(如底部的测试)似乎可以确认MessagePackSerializer正常运行。
添加一个写入OutputStream的响应过滤器(如下)似乎可以解决您的问题。 我尝试使用列表中的16和32条记录。
希望这可以帮助。
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();
}
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