2010年07月 小记(telnet,xml命名空间,MaxItemsInObjectGraph, IIS传输限制, memcached Telnet Interface)

1、在Windows 2008 R2下安装telnet客户端

PS C:\Users\Administrator> servermanagercmd -install telnet-client

2、使用XmlSerializer时移除xml声名和默认命名空间。

        protected string ToXml(object objectToConvert)
        {
            string str = null;

            using (MemoryStream stream = new MemoryStream())
            {
                //XmlWriterSettings.OmitXmlDeclaration移除xml声明
                using (XmlWriter xmlWriter = XmlTextWriter.Create(stream, 
 　　　　　　　　　　　　new XmlWriterSettings() 
　　　　　　　　　　　　{ OmitXmlDeclaration = true, Encoding = Encoding.UTF8 }))
                {
                    //移除命名空间
                    XmlSerializerNamespaces ns = new XmlSerializerNamespaces();
                    ns.Add("", "");

                    XmlSerializer serializer = new XmlSerializer(objectToConvert.GetType());
                    serializer.Serialize(xmlWriter, objectToConvert, ns);

                    byte[] buffer = new byte[stream.Length];
                    stream.Position = 0;
                    stream.Read(buffer, 0, (int)stream.Length);

                    str = Encoding.UTF8.GetString(buffer);
                    xmlWriter.Close();
                }
                stream.Close();
            }

            if (str != null)
            {
                str = str.Trim();
            }

            return str;
        }

3、WCF通信中如果出现序列化错误，如：

"对象图中可以序列化或反序列化的项目数目上限为“65536”"

请注意配置MaxItemsInObjectGraph。

#通过代码配置:

           foreach (var op in client.Endpoint.Contract.Operations)
            {
                var dataContractBehavior = op.Behaviors[typeof(DataContractSerializerOperationBehavior)]
                as DataContractSerializerOperationBehavior;
 
                if (dataContractBehavior != null)
                {
                    dataContractBehavior.MaxItemsInObjectGraph = int.MaxValue;
                }
            }

#通过配置修改：

<dataContractSerializer maxItemsInObjectGraph="2147483647" />

4、IIS传输限制

<httpRuntime maxRequestLength="20000" executionTimeout="600" />

5、memcached Telnet Interface