代码之家 › 专栏 › 技术社区 › Dugan

为什么我的ConfigurationElement没有从app.config读取其值?

c#-4.0 configuration .net

2

Dugan · 技术社区 · 15 年前

我使用System.Configuration.ConfigurationElement来表示app.config中的一些数据。它正确地检测到节存在(如果节不存在,则抛出错误),但它从未正确填充。排队的时候我只能得到一个空的集合,睡觉的时候我只能得到500个。

以下是相关的app.config部分:

<serviceBroker sleepTime="1000"> 
  <queues>  
     <queue name="TestQueue" priority="1"/>
  </queues>
</serviceBroker>

这是完整的app.config

<?xml version="1.0"?>
<configuration>
    <configSections>
    <section name="castle" type="Castle.Windsor.Configuration.AppDomain.CastleSectionHandler,Castle.Windsor" />
    <section name="SAM.Configuration.Data" type="SAM.Configuration.Data.DataConfigurationSection, SAM.Configuration"/>
    <section name="NHibernate.Caches.MemCache" type="NHibernate.Caches.MemCache.MemCacheSectionHandler,NHibernate.Caches.MemCache" />
</configSections>
<startup>
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/>
</startup>
<castle/>
<connectionStrings>
    <remove name="LocalSqlServer"/>
    <add name="LocalSqlServer" connectionString=""/>
    <add name="AuthSqlServer" connectionString=""/>
</connectionStrings>
<SAM.Configuration.Data>
    <mage MaxThreads="1" SmtpHost="qa" SmtpPort="25">
        <Tasks/>
    </mage>
    <serviceBroker sleepTime="1000">
        <queues>
            <queue name="TestQueue" priority="1"/>
        </queues>
    </serviceBroker>
    <databases>
        <database name="BusinessDomain" defaultConnectionName="">
            <connections>
                <connection>
                    <add key="name" value=""/>
                    <add key="assembly" value="SAM.Data.NHibernateProvider"/>
                    <add key="type" value="SAM.Data.NHibernateProvider.RepositoryManager"/>
                    <add key="configurationFile" value="Business.NHibernateSession.Config"/>
                    <add key="isEncrypted" value="FALSE" />
                </connection>
                <connection>
                    <add key="name" value=""/>
                    <add key="assembly" value="SAM.Data.NHibernateProvider"/>
                    <add key="type" value="SAM.Data.NHibernateProvider.RepositoryManager"/>
                    <add key="configurationFile" value="Business.NHibernateSession.Config"/>
                    <add key="isEncrypted" value="FALSE" />
                </connection>
            </connections>
        </database>
    </databases>
</SAM.Configuration.Data>
<NHibernate.Caches.MemCache configSource="nhibernate.memcache.config" />
</configuration>

这里是我的配置元素:

public class ServiceBrokerConfigurationElement : ConfigurationElement,
{
  [ConfigurationCollection(typeof(ServiceBrokerQueueElement), AddItemName = "queue")]
  [ConfigurationProperty("queues", IsRequired = true)]
  public ServiceBrokerQueueElementCollection Queues
  {
    get { return (ServiceBrokerQueueElementCollection)this["queues"]; }
  }

  [ConfigurationProperty("sleepTime", DefaultValue = (int) 500, IsRequired = true)]
  public int SleepTime
  {
    get { return (int)this["sleepTime"]; }
  }
}

这是我的配置部分(我已经去掉了许多其他可以正常工作的元素)

public class DataConfigurationSection : ConfigurationSection
{
    public const string SectionName = "SAM.Configuration.Data";

    private static DataConfigurationSection _configSection;

    [ConfigurationProperty("serviceBroker", IsRequired = false)]
    public ServiceBrokerConfigurationElement ServiceBroker
    {
        get
        {
            return (ServiceBrokerConfigurationElement)this["serviceBroker"];
        }
    }

    public static DataConfigurationSection Section
    {
        get
        {
            if (_configSection == null)
            {
                _configSection = ((DataConfigurationSection)(ConfigurationManager.GetSection(SectionName)));
            }

            return _configSection;
        }
    }

}

3 回复 | 直到 15 年前

1

0

Steve Guidi 15 年前

能否验证应用程序配置文件是否包含相关的配置节声明?要将配置节映射到实现它的类型,需要如下内容。

<configuration>
  <configSections>
    <section name="SamConfigurationData" type="Namespace.DataConfigurationSection, AssemblyName"/>
  </configSections>

  <SamConfigurationData>
    <serviceBroker sleepTime="1000"> 
      <queues>  
        <queue name="TestQueue" priority="1"/>
      </queues>
    </serviceBroker>
  </SamConfigurationData>
</configuration>

2

0

Erwin Alva 15 年前

我没发现什么不对劲,但我得自己试试。这是我工作的版本,并与你的版本(包括缺失的部分)进行比较。如果您仍然看到发生了可怕的错误,可以将try/catch放在它调用GetSection的位置。

应用程序配置:

  <configSections>
    <section name="SAM.Configuration.Data" type="Test.DataConfigurationSection, Test" />
  </configSections>

  <SAM.Configuration.Data>
    <serviceBroker sleepTime="1000">
      <queues>
        <queue name="TestQueue" priority="1"/>
      </queues>
    </serviceBroker>
  </SAM.Configuration.Data>

配置类:

public class DataConfigurationSection : ConfigurationSection
{
    public const string SectionName = "SAM.Configuration.Data";

    private static DataConfigurationSection _configSection;

    [ConfigurationProperty("serviceBroker", IsRequired = false)]
    public ServiceBrokerConfigurationElement ServiceBroker
    {
        get
        {
            return (ServiceBrokerConfigurationElement)this["serviceBroker"];
        }
    }

    public static DataConfigurationSection Section
    {
        get
        {
            if (_configSection == null)
            {
                _configSection = ((DataConfigurationSection) ConfigurationManager.GetSection(SectionName)));
            }

            return _configSection;
        }
    }
}

public class ServiceBrokerConfigurationElement : ConfigurationElement
{
    [ConfigurationCollection(typeof(ServiceBrokerQueueElement), AddItemName = "queue")]
    [ConfigurationProperty("queues", IsRequired = true)]
    public ServiceBrokerQueueElementCollection Queues
    {
        get { return (ServiceBrokerQueueElementCollection)this["queues"]; }
    }

    [ConfigurationProperty("sleepTime", DefaultValue = (int)500, IsRequired = true)]
    public int SleepTime
    {
        get { return (int)this["sleepTime"]; }
    }
}

public class ServiceBrokerQueueElementCollection : ConfigurationElementCollection
{
    protected override ConfigurationElement CreateNewElement()
    {
        return new ServiceBrokerQueueElement();
    }

    protected override object GetElementKey(ConfigurationElement element)
    {
        return ((ServiceBrokerQueueElement)element).Name;
    }

    public new ServiceBrokerQueueElement this[string name]
    {
        get
        {
            return (ServiceBrokerQueueElement)this.BaseGet(name);
        }
    }
}

public class ServiceBrokerQueueElement : ConfigurationElement
{
    [ConfigurationProperty("name", IsRequired = true)]
    public string Name
    {
        get
        {
            return (string)this["name"];
        }
        set
        {
            this["name"] = value;
        }
    }

    [ConfigurationProperty("priority", IsRequired = true)]
    public int Priority
    {
        get
        {
            return (int)this["priority"];
        }
        set
        {
            this["priority"] = value;
        }
    }
}

3

0

Dugan 15 年前

它基本上与配置部分的内容没有任何关系,我在Castle.Windsor把所有东西都连接错了。它总是返回ServiceBrokerConfiguration的空实例,而不是从app.config加载的实例。

谢谢大家的帮助。