如何修改MaxItemsInObjectGraph的限制
在WebService中,如果返回值过大,比如Array,List,DataSet等达到一定数量级的话,可能引发下面的异常:
1.受信Message Quota Size超过65536 (System.ServiceModel.CommunicationException)
解决方法:修改客户端配置文件app.config 的 maxReceivedMessageSize,maxBufferSize 两个属性。
但是,数量级继续增大,还会遇到新的问题:
2.MaxItemsInObjectGraph Quta Size超过65536(InnerException:System.Runtime.SerializationException)
解决方法(注意红色和加粗部分):
<?xml version="1.0" encoding="utf-8" ?> <configuration> <system.serviceModel> <behaviors> <endpointBehaviors> <behavior name="NewBehavior"> <dataContractSerializer maxItemsInObjectGraph="65536000" /> </behavior> </endpointBehaviors> </behaviors> <bindings> <basicHttpBinding> <binding name="Service1Soap" closeTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00" allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard" maxBufferSize="2147483647" maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647" messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered" useDefaultWebProxy="true"> <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384" maxBytesPerRead="4096" maxNameTableCharCount="16384" /> <security mode="None"> <transport clientCredentialType="None" proxyCredentialType="None" realm="" /> <message clientCredentialType="UserName" algorithmSuite="Default" /> </security> </binding> </basicHttpBinding> </bindings> <client> <endpoint address="http://localhost:3511/Service1.asmx" behaviorConfiguration="NewBehavior" binding="basicHttpBinding" bindingConfiguration="Service1Soap" contract="WebSvc.Service1Soap" name="Service1Soap" /> </client> </system.serviceModel> </configuration>