我收到以下异常:
“每个配置文件中的部分只能出现一次。有关例外情况,请参阅帮助主题。”
我的配置文件看起来像这样:
<configSections>
<sectionGroup name="point.System">
<section name="singleInstanceCache"
type="xyz.Point.System.Configuration.SingleInstanceCache, Point.System" />
</sectionGroup>
<sectionGroup name="point.Services">
<sectionGroup name="xServices" type="xyz.Point.Messaging.PointServiceConfiguration.PointServices, Barcap.FIA.Point.Messaging">
<section name="xService"
type="xyz.Point.Messaging.PointServiceConfiguration.PointService, Barcap.FIA.Point.Messaging" />
</sectionGroup>
</sectionGroup>
</configSections>
<point.Services>
<xServices>
<xService name="Service1" type="IService" >
<endpoints>
<endpoint aliasName="incoming" endpointName="Subscriber"/>
<endpoint aliasName="outgoing" endpointName="Publisher"/>
</endpoints>
</xService>
<xService name="BlobService" type="IPortfolioService" >
<endpoints>
<endpoint aliasName="incoming" endpointName="Subscriber"/>
<endpoint aliasName="outgoing" endpointName="Publisher"/>
</endpoints>
</xService>
</xServices>
</point.Services>
这是我加载它的代码:
public class PointServices : ConfigurationSection
{
public static PointServices Get()
{
var t = (PointServices)ConfigurationManager.GetSection("point.Services/xServices");
return null;
}
//<summary>
//Declares a collection element represented in the following configuration sub-section
//<singleInstances> <add .../> </singleInstances>
//</summary>
[ConfigurationProperty("xServices", IsDefaultCollection = true)]
[ConfigurationCollection(typeof(PointServices), AddItemName = "xService")]
public PointServicesCollection Services
{
get { return (PointServicesCollection) base["xServices"]; }
}
}
public class PointService : ConfigurationElement
{
[ConfigurationProperty("name",IsRequired = true)]
public string Name
{
get { return this["name"].ToString(); }
}
[ConfigurationProperty("type", IsRequired = true)]
public string Type
{
get { return this["type"].ToString(); }
}
[ConfigurationProperty("endpoints", IsRequired = false)]
[ConfigurationCollection(typeof(EndpointAliasCollection), AddItemName = "endpoint")]
public EndpointAliasCollection Endpoints
{
get { return (EndpointAliasCollection)this["endpoints"]; }
}
}
如果您知道我为什么会收到此错误,那将会很有帮助。
Thanks
您尝试将节组用作集合,并将节用作集合中的项目,这不是它们的用途,因此会出现错误。
基本上,您只需将 point.Services 定义为一个部分,因为它不需要包含任何其他部分,然后定义一个集合属性来包含配置元素。您可以按如下方式更新代码:
Config:
<configSections>
<section name="point.Services"
type="xyz.Point.Messaging.PointServiceConfiguration.PointServices, Barcap.FIA.Point.Messaging" />
</configSections>
<point.Services>
<xServices>
<xService name="Service1" type="IService" >
<endpoints>
<endpoint aliasName="incoming" endpointName="Subscriber"/>
<endpoint aliasName="outgoing" endpointName="Publisher"/>
</endpoints>
</xService>
<xService name="BlobService" type="IPortfolioService" >
<endpoints>
<endpoint aliasName="incoming" endpointName="Subscriber"/>
<endpoint aliasName="outgoing" endpointName="Publisher"/>
</endpoints>
</xService>
</xServices>
</point.Services>
那么代码是:
public class PointServices : ConfigurationSection
{
public static PointServices Get()
{
return (PointServices) ConfigurationManager.GetSection("point.Services");
}
[ConfigurationProperty("xServices", IsDefaultCollection = true)]
[ConfigurationCollection(typeof(PointService), AddItemName = "xService")]
public PointServicesCollection Services
{
get { return (PointServicesCollection) base["xServices"]; }
}
}
public class PointService : ConfigurationElement
{
[ConfigurationProperty("name", IsRequired = true)]
public string Name
{
get { return this["name"].ToString(); }
}
[ConfigurationProperty("type", IsRequired = true)]
public string Type
{
get { return this["type"].ToString(); }
}
[ConfigurationProperty("endpoints", IsRequired = false)]
[ConfigurationCollection(typeof(EndpointAlias), AddItemName = "endpoint")]
public EndpointAliasCollection Endpoints
{
get { return (EndpointAliasCollection) this["endpoints"]; }
}
}
把它分解:
- PointServices 是映射到 部分的配置部分,因此静态 Get() 方法反映了这一点
- PointServices 定义了一个集合属性 Services,它是一个 PointServiceCollection,其中项目类型为 PointService(不是 PointServices),并映射到元素名称 xService
- PointService 元素是元素而不是部分,再次注意集合属性定义项目类型,而不是容器类型
希望有帮助。
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