0

我有以下代码

public class SampleClass
    {
        static string sampleString = GetString("sample");

        public static string GetString(string p)
        {
            return DatabaseInteraction.GetData(p);
        }
    }

    public static class DatabaseInteraction
    {
        public static string GetData(string p)
        {
            ///In actual implementation it is call to database
            return string.Empty;
        }
    }

在这段代码中，我想模拟 SampleClass 的 GetString 方法的行为。但是，当我为此编写痣时，代码会抛出异常，说静态初始化中发生了一些错误。我无法在这里解决问题。错误信息：

System.TypeInitializationException: The type initializer for 'MDatabaseInteraction
.GetString' threw an exception. ---> System.Configuration.ConfigurationErrorsException: The requested database dbPortalOracle is not defined in configuration.

StackTrace:
           at Microsoft.Practices.EnterpriseLibrary.Data.DatabaseConfigurationView.ValidateConnectionStringSettings(String name, ConnectionStringSettings connectionStringSettings)
            at Microsoft.Practices.EnterpriseLibrary.Data.DatabaseConfigurationView.GetConnectionStringSettings(String name)
            at Microsoft.Practices.EnterpriseLibrary.Data.DatabaseCustomFactory.CreateObject(IBuilderContext context, String name, IConfigurationSource configurationSource, ConfigurationReflectionCache reflectionCache)
            at Microsoft.Practices.EnterpriseLibrary.Common.Configuration.ObjectBuilder.ConfiguredObjectStrategy.BuildUp(IBuilderContext context, Type t, Object existing, String id)
            at Microsoft.Practices.ObjectBuilder.BuilderStrategy.BuildUp(IBuilderContext context, Type typeToBuild, Object existing, String idToBuild)
            at Microsoft.Practices.ObjectBuilder.SingletonStrategy.BuildUp(IBuilderContext context, Type typeToBuild, Object existing, String idToBuild)
            at Microsoft.Practices.ObjectBuilder.BuilderStrategy.BuildUp(IBuilderContext context, Type typeToBuild, Object existing, String idToBuild)
            at Microsoft.Practices.EnterpriseLibrary.Common.Configuration.ObjectBuilder.ConfigurationNameMappingStrategy.BuildUp(IBuilderContext context, Type t, Object existing, String id)
            at Microsoft.Practices.ObjectBuilder.BuilderBase`1.DoBuildUp(IReadWriteLocator locator, Type typeToBuild, String idToBuild, Object existing, PolicyList[] transientPolicies)
            at Microsoft.Practices.ObjectBuilder.BuilderBase`1.BuildUp(IReadWriteLocator locator, Type typeToBuild, String idToBuild, Object existing, PolicyList[] transientPolicies)
            at Microsoft.Practices.ObjectBuilder.BuilderBase`1.BuildUp[TTypeToBuild](IReadWriteLocator locator, String idToBuild, Object existing, PolicyList[] transientPolicies)
            at Microsoft.Practices.EnterpriseLibrary.Common.Configuration.ObjectBuilder.EnterpriseLibraryFactory.BuildUp[T](IReadWriteLocator locator, String id, IConfigurationSource configurationSource)
            at Microsoft.Practices.EnterpriseLibrary.Common.Configuration.ObjectBuilder.EnterpriseLibraryFactory.BuildUp[T](String id, IConfigurationSource configurationSource)
            at Microsoft.Practices.EnterpriseLibrary.Common.Configuration.ObjectBuilder.NameTypeFactoryBase`1.Create(String name)
            at Microsoft.Practices.EnterpriseLibrary.Data.DatabaseFactory.CreateDatabase(String name)

我的疑问是，如果我采用了该方法，那么为什么要创建数据库？谁能告诉我这里有什么问题？谢谢阿什瓦尼

4

1 回答 1

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moles 框架不支持由静态构造函数调用的迂回代码。该方法GetString(string)由类的静态构造函数调用SampleClass。由于不支持绕行GetString，因此它没有被篡改。因此，您的数据库工厂被调用。

从 v0.92.50603.1 版本开始，有一个属性可以让您“擦除”静态构造函数调用。

从痣手册：

静态构造函数使用 Moles 进行特殊处理。可以指定给定类型的静态构造函数应该被简单地擦除。这是通过 [MolesEraseStaticConstructor] 属性完成的，如下所示：

[assembly: MolesEraseStaticConstructor(typeof(MyStatic))]
class MyStatic {
    static MyStatic() {
        throw new Exception(); // needs moling…
    }
}
于 2011-10-31T14:49:50.510 回答