自托管wcf服务中的异常 - “System.ServiceModel.Diagnostics.TraceUtility”的类型初始化程序引发异常
当我尝试将现有的基于IIS的REST服务移植到自托管服务时，我遇到以下异常。
＆＃39; System.ServiceModel.Diagnostics.TraceUtility＆＃39; 的类型初始化程序引发了异常。
在成功测试此处提供的示例代码之前，我正在关注 Self-hosted WCF REST service 来移植现有代码。
我的内心例外如下。
现在，在注释掉整个<configSections>标记之后，它会抛出另一个异常：
在服务＆＃39;服务＆＃39;
实施的合同列表中找不到合同名称＆＃39; SelfHostedRESTService.IService＆＃39; 。
这是我的配置文件：
<?xml version="1.0"?>
<configuration>
<startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/></startup>
<!--<configSections>
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />
<sectionGroup name="system.web.extensions" type="System.Web.Configuration.SystemWebExtensionsSectionGroup, System.Web.Extensions, Version=4.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
<sectionGroup name="scripting" type="System.Web.Configuration.ScriptingSectionGroup, System.Web.Extensions, Version=4.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
<section name="scriptResourceHandler" type="System.Web.Configuration.ScriptingScriptResourceHandlerSection, System.Web.Extensions, Version=4.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
<sectionGroup name="webServices" type="System.Web.Configuration.ScriptingWebServicesSectionGroup, System.Web.Extensions, Version=4.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
<section name="jsonSerialization" type="System.Web.Configuration.ScriptingJsonSerializationSection, System.Web.Extensions, Version=4.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="Everywhere"/>
<section name="profileService" type="System.Web.Configuration.ScriptingProfileServiceSection, System.Web.Extensions, Version=4.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
<section name="authenticationService" type="System.Web.Configuration.ScriptingAuthenticationServiceSection, System.Web.Extensions, Version=4.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
<section name="roleService" type="System.Web.Configuration.ScriptingRoleServiceSection, System.Web.Extensions, Version=4.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
</sectionGroup>
</sectionGroup>
</sectionGroup>
</configSections>-->
<!--<log4net>
<appender type="log4net.Appender.RollingFileAppender" name="DebugLog">
<file value="C:\\TestProj\\Info.txt" />
<layout type="log4net.Layout.PatternLayout">
<conversionpattern value="%d [%t] %-5p %c - %m%n" />
</layout>
</appender>
<appender type="log4net.Appender.RollingFileAppender" name="RestServiceLog">
<file value="C:\\TestProj\\Error.txt" />
<layout type="log4net.Layout.PatternLayout">
<conversionpattern value="%d [%t] %-5p %c - %m%n" />
</layout>
</appender>
<appender type="log4net.Appender.RollingFileAppender" name="bmitWarningLog">
<file value="C:\\TestProj\\PingResult.txt" />
<layout type="log4net.Layout.PatternLayout">
<conversionpattern value="%d [%t] %-5p %c - %m%n" />
</layout>
</appender>
<logger name="DebugLoggerClass">
<level value="DEBUG" />
<appendToFile value="true" />
<rollingStyle value="Size" />
<maxSizeRollBackups value="10" />
<maximumFileSize value="1024KB" />
<staticLogFileName value="true" />
<param value="DEBUG" name="Threshold" />
<appender-ref ref="DebugLog" />
</logger>
<logger name="SelfHostedRESTService">
<level value="ERROR" />
<appendToFile value="true" />
<rollingStyle value="Size" />
<maxSizeRollBackups value="10" />
<maximumFileSize value="1024KB" />
<staticLogFileName value="true" />
<param value="ERROR" name="Threshold" />
<appender-ref ref="RestServiceLog" />
</logger>
<logger name="WarningLoggerClass">
<level value="WARN" />
<appendToFile value="true" />
<rollingStyle value="Size" />
<maxSizeRollBackups value="10" />
<maximumFileSize value="1024KB" />
<staticLogFileName value="true" />
<param value="WARN" name="Threshold" />
<appender-ref ref="bmitWarningLog" />
</logger>
</log4net>-->
<appSettings/>
<connectionStrings/>
<system.web>
<webServices>
<protocols>
<add name="HttpSoap" />
<add name="HttpGet" />
<add name="HttpPost" />
</protocols>
</webServices>
<compilation debug="true">
<assemblies>
<add assembly="System.Core, Version=4.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
<add assembly="System.Web.Extensions, Version=4.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
</assemblies>
</compilation>
<authentication mode="Windows"/>
<pages>
<controls>
<add tagPrefix="asp" namespace="System.Web.UI" assembly="System.Web.Extensions, Version=4.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
</controls>
</pages>
<httpHandlers>
<remove verb="*" path="*.asmx"/>
<add verb="*" path="*.asmx" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=4.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add verb="*" path="*_AppService.axd" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=4.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=4.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" validate="false"/>
</httpHandlers>
<httpModules>
<add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=4.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
</httpModules>
<identity impersonate="false" />
</system.web>
<system.codedom>
<compilers>
<compiler language="c#;cs;csharp" extension=".cs" warningLevel="4" type="Microsoft.CSharp.CSharpCodeProvider, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
<providerOption name="CompilerVersion" value="v4.0"/>
<providerOption name="WarnAsError" value="false"/>
</compiler>
</compilers>
</system.codedom>
<system.webServer>
<validation validateIntegratedModeConfiguration="false"/>
<modules>
<add name="ScriptModule" preCondition="integratedMode" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=4.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
</modules>
<handlers>
<remove name="WebServiceHandlerFactory-Integrated"/>
<add name="ScriptHandlerFactory" verb="*" path="*.asmx" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=4.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add name="ScriptHandlerFactoryAppServices" verb="*" path="*_AppService.axd" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=4.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add name="ScriptResource" preCondition="integratedMode" verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=4.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
</handlers>
</system.webServer>
<system.serviceModel>
<bindings>
<wsHttpBinding>
<binding name="WSHttpBinding_IService" closeTimeout="10:01:00" openTimeout="10:01:00" receiveTimeout="10:10:00" sendTimeout="10:01:00"
bypassProxyOnLocal="false" transactionFlow="false" hostNameComparisonMode="StrongWildcard" maxBufferPoolSize="2147483647"
maxReceivedMessageSize="2147483647" messageEncoding="Text" textEncoding="utf-8" useDefaultWebProxy="true" allowCookies="false">
<readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647" maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" />
<reliableSession ordered="true" inactivityTimeout="10:10:00" enabled="false" />
</binding>
</wsHttpBinding>
</bindings>
<services>
<service name="SelfHostedRESTService.Service" behaviorConfiguration="SelfHostedRESTService.RestServiceBehavior">
<endpoint address="SelfHostedRESTService.Service" binding="webHttpBinding" contract="SelfHostedRESTService.IService" behaviorConfiguration="web">
<identity>
<dns value="localhost"/>
</identity>
</endpoint>
</service>
</services>
<behaviors>
<serviceBehaviors>
<behavior name="SelfHostedRESTService.RestServiceBehavior">
<serviceMetadata httpGetEnabled="true"/>
<serviceDebug includeExceptionDetailInFaults="false"/>
</behavior>
</serviceBehaviors>
<endpointBehaviors>
<behavior name="web">
<webHttp/>
</behavior>
</endpointBehaviors>
</behaviors>
</system.serviceModel>
</configuration>
这是我的界面：
namespace Contracts
{
[ServiceContract]
public interface IService
{
[XmlSerializerFormat]
[OperationContract]
[WebGet]
XmlDocument postGeneralXMLDocument(Stream strInput);
[OperationContract]
[WebInvoke]
string PostMessage(string inputMessage);
}
}
为什么会抛出此异常？
1 个答案:
答案 0 :(得分：3)
根据您的实际内部异常，
Only one <configSections> element allowed per config file and if present must be the first child of the root <configuration> element.
问题的原因是<startup>..</startup>部分，如果web.config中存在<configSections>，则它必须是根元素的第一个子元素。在<startup>..</startup>之后移动<configSections>部分可以解决您的问题。
-
取消注释
<configSections>元素。 -
在
<startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/></startup>部分下方移动<configSections>...</configSections>部分。 - 在接口 中将名称空间更改为
- 在web.config中使用
Contracts.IService。
<强>更新：
例外"The contract name 'SelfHostedRESTService.IService' could not be found in the list of contracts implemented by the service 'Service'."
请更正所使用的命名空间，它在接口和放大器中使用的命名空间不匹配; web.config中。
合同中：namespace Contracts
在Web.config中：SelfHostedRESTService.IService
无论哪种，
SelfHostedRESTService
或者
更新2
对于例外"Operation 'postGeneralXMLDocument' in contract 'IService' has a query variable named 'strInput' of type 'System.IO.Stream', but type 'System.IO.Stream' is not convertible by 'QueryStringConverter'. Variables for UriTemplate query values must have types that can be converted by 'QueryStringConverter'."
看起来你正在使用一个名为＆＃39; strInput＆＃39;类型＆＃39; System.IO.Stream＆＃39;，直接无法序列化。尝试序列化为字符串＆amp;然后在另一端反序列化。
希望它有所帮助。
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