[英]ServiceStack JsonServiceClient Silently Failing When Deserializing
[英]ServiceStack MsgPackServiceClient fails when fetching data but JsonServiceClient works
我正在與ServiceStack一起玩耍,並做了一些簡單的步驟來嘗試了解這項技術。
我有一個非常簡單的設置(完整的解決方案可下載 ):
Article
數據。 我為ServiceStack.Pluging.MsgPack
安裝了nuget包,並添加了引用並正確設置了AppHost插件,如下面的main()
代碼所示。
這些是我使用的數據類,DTO和服務類:
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"} ,
};
}
}
這一切都是為了讓客戶獲得16 Articles
虛擬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();
}
將AppHost定義為:
public class AppHost : AppHostHttpListenerBase
{
static readonly ConfigurationResourceManager AppSettings = new ConfigurationResourceManager();
public AppHost() : base("Test", typeof(Article).Assembly) { }
public override void Configure(Funq.Container container) { }
}
調用client.Get(...)
失敗,並顯示SerializationException
:
解包程序尚未讀取任何數據。 解壓縮程序可能永遠不會讀取或基礎流為空。
當我將MsgPackServiceClient()
與超過15條記錄一起使用時,會發生異常。
奇怪的是,如果我返回15個或更少的Articles
實例,它將起作用。
如果我改用JsvServiceClient()
或JsonServiceClient()
,則返回數千條記錄沒有問題。
我真的不知道我是在做錯什么,還是在做其他事情。
我正在將VS2012與通過nuget安裝的ServiceStack 3.9.43(包括MsgPack插件)一起使用。
無論使用哪種編譯選項(AnyCPU / x86),都會出現此問題。 沒有啟用代碼優化(每個解決方案/項目選項都是默認選項)。
您可以下載完整的解決方案 ,然后自己嘗試。
因此,我不確定是什么問題。 似乎特定於在AppHost的同一應用程序中使用MsgPackServiceClient。 如果您從瀏覽器向http://localhost:8883/Articles?format=x-msgpack
之類的請求發出請求,它似乎可以正常工作。
編寫測試(如底部的測試)似乎可以確認MessagePackSerializer正常運行。
添加一個寫入OutputStream的響應過濾器(如下)似乎可以解決您的問題。 我嘗試使用列表中的16和32條記錄。
希望這可以幫助。
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測試
[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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