使用WCF的預設DataContractSerializer手動去序列化成byte[]，然後接收後再手動去還原序列化，能解決這個問題。也就是說單純的byte[]能過去，直接將下面代碼中的list以List<May>返回去就是出現LZ遇到的問題。
也就是說序列化與還原序列化這一大塊資料都沒問題。主要問題還是出現在WCF組裝訊息上了。
設定一下 ReaderQuotas 這個屬性，這是設定訊息複雜性的。
感覺這種癥狀很像被DOS幹掉的感覺，於是想到ReaderQuotas。
下面是我嘗試的例子。
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C# code
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publicbyte[] GetMays() { DataContractSerializer DCZ =new DataContractSerializer(typeof(List<May>)); List<May> list =new List<May>(); for (int i =0; i <30000; i++) { May tmp =new May { Name = DateTime.Now.ToString("yyyy-MM-dd") }; list.Add(tmp); } using (MemoryStream fs =new MemoryStream()) { DCZ.WriteObject(fs, list); return fs.ToArray(); } } -------------------
用你這個方法搞定。用戶端還要設定下
netTcpBinding.ReaderQuotas.MaxArrayLength = 2147483647;
netTcpBinding.ReaderQuotas.MaxStringContentLength = 2147483647;
netTcpBinding.ReaderQuotas.MaxBytesPerRead = 2147483647;
//-------------------------------
System.Diagnostics.Stopwatch myWatch = new System.Diagnostics.Stopwatch();
myWatch.Start();
// TaxiInfo[] taxiInfos = PositionService.GetAllTaxiInfos();
byte[] sds = PositionService.GetMays();
myWatch.Stop();
Console.WriteLine("耗時：" + myWatch.ElapsedMilliseconds + "ms");
MemoryStream memory = new MemoryStream(sds);
XmlDictionaryReader reader =
XmlDictionaryReader.CreateTextReader(memory, new XmlDictionaryReaderQuotas());
DataContractSerializer ser = new DataContractSerializer(typeof(List<TaxiInfo>));
// Deserialize the data and read it from the instance.
List<TaxiInfo> deserializedPerson =
(List<TaxiInfo>)ser.ReadObject(reader, true);
reader.Close();
// Console.WriteLine(deserializedPerson);
這樣就沒問題了。3Q----------------------
懷疑還是別的問題。。。我測試10000都沒有問題呀。
WcfLibrary:
1. 契約：
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C# code
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[DataContract] publicclass TaxiInfo { [DataMember] publicstring PhoneNumber { get; set; } [DataMember] publicstring Others { get; set; } } [ServiceContract] publicinterface IService1 { [OperationContract] List<TaxiInfo> GetAllTaxiInfos(); }
2. Service
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C# code
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[ServiceBehavior(InstanceContextMode=InstanceContextMode.Single, ConcurrencyMode=ConcurrencyMode.Multiple)] publicclass Service1 : IService1 { privatestatic List<TaxiInfo> _taxis =new List<TaxiInfo>(); static Service1() { foreach (var i in Enumerable.Range(1, 10000)) { var taxi =new TaxiInfo { PhoneNumber = i.ToString().PadLeft(12, '0') }; _taxis.Add(taxi); } } public List<TaxiInfo> GetAllTaxiInfos() { return _taxis; } }
3. Winform Host
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C# code
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publicpartialclass Form1 : Form { public Form1() { InitializeComponent(); } private ServiceHost _host; privatevoid button1_Click(object sender, EventArgs e) { NetTcpBinding netTcpBinding =new NetTcpBinding(SecurityMode.None, true) { MaxBufferPoolSize =2147483647,//2g MaxBufferSize =2147483647, MaxReceivedMessageSize =2147483647, SendTimeout =new TimeSpan(0, 0, 30), ReceiveTimeout =new TimeSpan(20, 0, 10), ReliableSession = { Enabled =true, InactivityTimeout =new TimeSpan(20, 0, 10) } }; try { _host =new ServiceHost(typeof(WcfServiceLibrary1.Service1)); ServiceThrottlingBehavior throttlingBehavior = _host.Description.Behaviors.Find<ServiceThrottlingBehavior>(); if (throttlingBehavior ==null) { throttlingBehavior =new ServiceThrottlingBehavior { MaxConcurrentCalls =3000, MaxConcurrentSessions =3000 }; _host.Description.Behaviors.Add(throttlingBehavior); } else { throttlingBehavior.MaxConcurrentCalls =3000; throttlingBehavior.MaxConcurrentSessions =3000; } //_host.Description.Endpointsstring strAddress ="net.tcp://localhost:20000/PositionServices"; _host.AddServiceEndpoint(typeof(WcfServiceLibrary1.IService1), netTcpBinding, strAddress); _host.Open(); label1.Text ="Service is opened..."; } catch (Exception ex) { MessageBox.Show(ex.Message); } } }
3. WcfClient
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C# code
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class Program { privatestatic WcfServiceLibrary1.IService1 PositionService =null; staticvoid Main(string[] args) { try { InitConnect(); var sw =new Stopwatch(); sw.Start(); var allTaxis = PositionService.GetAllTaxiInfos(); Console.WriteLine(allTaxis.Count); sw.Stop(); Console.WriteLine("GetAllTaxiInfos Elapsed：{0}ms", sw.ElapsedMilliseconds); Console.Read(); } catch (Exception ex) { Console.WriteLine(ex.Message); } } staticvoid InitConnect() { NetTcpBinding netbinding =new NetTcpBinding(SecurityMode.None, true) { MaxBufferPoolSize =2147483647, MaxBufferSize =2147483647, MaxReceivedMessageSize =2147483647, SendTimeout =new TimeSpan(0, 0, 30), ReceiveTimeout =new TimeSpan(20, 0, 0), ReliableSession = { Enabled =true, InactivityTimeout =new TimeSpan(20, 0, 10) }, }; PositionService = ChannelFactory<WcfServiceLibrary1.IService1>.CreateChannel (netbinding, new EndpointAddress("net.tcp://localhost:20000/PositionServices")); } }
輸出：
10000
GetAllTaxiInfos Elapsed：2183ms
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服務端配置一下就可以。確實如有網友說的，每次資料不要太大，建議如果資料大的話用非同步分割成小塊去處理，當然如果是結合資料庫的話，分頁最好是在服務端做。
序列化肯定很耗記憶體的. ---------
改到 100000 也沒錯
100000
GetAllTaxiInfos Elapsed：1160ms
沒問題啊，你出什麼錯誤？
OutOfMemoryException 就不要試了。。。記憶體太小了。
