你好，
我只是设置了Enterprise Library 5的日志记录应用程序块部分。我认为我已经完成了它的正确但它没有记录到事件记录它在write方法上的错误并给了我以下异常。
The type LogWriter cannot be constructed.
You must configure the container to supply this value.
任何人都可以给我一张支票或告诉我我错过了什么..
首先，我使用winforms应用程序在Windows 7中运行。
这是我创建日志的方法，您可以看到write方法。
public class Logger : ILogger
{
public void SendTest(string test)
{
LogEntry log = new LogEntry();
log.EventId = 300;
log.Message = test;
log.Categories.Add("testing");
log.Severity = TraceEventType.Information;
log.Priority = 5;
Microsoft.Practices.EnterpriseLibrary.Logging.Logger.Write(log);
}
}
我所有的配置都是使用entlib5编辑器而不是手工编写的。并确认这是entlib.config的路径
filePath="C:\myapp\entlib.config" />
这是我的app.config，它指向我的entlib.config
<?xml version="1.0"?>
<configuration>
<configSections>
<section name="enterpriseLibrary.ConfigurationSource" type="Microsoft.Practices.EnterpriseLibrary.Common.Configuration.ConfigurationSourceSection, Microsoft.Practices.EnterpriseLibrary.Common, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="true" />
</configSections>
<enterpriseLibrary.ConfigurationSource selectedSource="System Configuration Source">
<sources>
<add name="System Configuration Source" type="Microsoft.Practices.EnterpriseLibrary.Common.Configuration.SystemConfigurationSource, Microsoft.Practices.EnterpriseLibrary.Common, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
<add name="File-based Configuration Source" type="Microsoft.Practices.EnterpriseLibrary.Common.Configuration.FileConfigurationSource, Microsoft.Practices.EnterpriseLibrary.Common, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
filePath="C:\myapp\entlib.config" />
</sources>
<redirectSections>
<add sourceName="File-based Configuration Source" name="Redirected Section" />
</redirectSections>
</enterpriseLibrary.ConfigurationSource>
<startup><supportedRuntime version="v2.0.50727"/></startup></configuration>
这是我的entlib.config
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<configSections>
<section name="loggingConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Logging.Configuration.LoggingSettings, Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="true" />
</configSections>
<loggingConfiguration name="" tracingEnabled="true" defaultCategory="General">
<listeners>
<add name="Event Log Listener" type="Microsoft.Practices.EnterpriseLibrary.Logging.TraceListeners.FormattedEventLogTraceListener, Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
listenerDataType="Microsoft.Practices.EnterpriseLibrary.Logging.Configuration.FormattedEventLogTraceListenerData, Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
source="Enterprise Library Logging" formatter="Text Formatter"
log="" machineName="." traceOutputOptions="None" />
</listeners>
<formatters>
<add type="Microsoft.Practices.EnterpriseLibrary.Logging.Formatters.TextFormatter, Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
template="Timestamp: {timestamp}{newline}
Message: {message}{newline}
Category: {category}{newline}
Priority: {priority}{newline}
EventId: {eventid}{newline}
Severity: {severity}{newline}
Title:{title}{newline}
Machine: {localMachine}{newline}
App Domain: {localAppDomain}{newline}
ProcessId: {localProcessId}{newline}
Process Name: {localProcessName}{newline}
Thread Name: {threadName}{newline}
Win32 ThreadId:{win32ThreadId}{newline}
Extended Properties: {dictionary({key} - {value}{newline})}"
name="Text Formatter" />
</formatters>
<categorySources>
<add switchValue="All" name="General">
<listeners>
<add name="Event Log Listener" />
</listeners>
</add>
</categorySources>
<specialSources>
<allEvents switchValue="All" name="All Events" />
<notProcessed switchValue="All" name="Unprocessed Category" />
<errors switchValue="All" name="Logging Errors & Warnings">
<listeners>
<add name="Event Log Listener" />
</listeners>
</errors>
</specialSources>
</loggingConfiguration>
</configuration>
修改 问题已使用新的app.config进行更新，以包含
<redirectSections>
<add sourceName="File-based Configuration Source" name="Redirected Section" />
</redirectSections>
我仍然收到错误。
Activation error occured while trying to get instance of typeLogWriter，键“”
和内部异常是
依赖项的解决方案失败， type = \ “Microsoft.Practices.EnterpriseLibrary.Logging.LogWriter \”， name = \“（none）\”。\ r \ nException 发生在：while 解析。\ r \ nException是： InvalidOperationException - 类型 无法构造LogWriter。您 必须配置要供应的容器 这个 值。\ r \ n -------------------------------------------- --- \ r \ n在例外的时候， 容器是：\ r \ n \ r \ n解析 Microsoft.Practices.EnterpriseLibrary.Logging.LogWriter，（无）\ r \ n“个}
我使用EntLib配置器来创建两个文件。
entlib.config我接受了默认值，因为它似乎包含了EventLog监听器..
修改
这是我在entlib.config文件中的行，log是空的 - 这是正确的吗？
<add name="Event Log Listener" type="Microsoft.Practices.EnterpriseLibrary.Logging.TraceListeners.FormattedEventLogTraceListener, Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
listenerDataType="Microsoft.Practices.EnterpriseLibrary.Logging.Configuration.FormattedEventLogTraceListenerData, Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
source="Enterprise Library Logging" formatter="Text Formatter"
log="" machineName="." traceOutputOptions="None" />
修改
MY Logger.write在dll中，但我的app.config / entlib.config在winforms应用程序中.. winforms应用程序引用了我写日志的dll项目。
dll和winforms都引用了
Microsoft.Practices.EnterpriseLibrary.Logging
并且还使用了unity，有
Microsoft.Practices.Unity
Microsoft.Practices.Unity.Interception
答案 0 :(得分：3)
Martin，您已经创建了一个基于文件的配置源，但是您还没有将日志记录部分重定向到它。
将以下内容添加到enterpriseLibrary.ConfigurationSource节点中的App.config：
<redirectSections>
<add sourceName="File-based Configuration Source" name="loggingConfiguration" />
</redirectSections>
此外，我建议使用Enterprise Library 5.0 Hands-on Labs集中的配置源实验室。它涵盖了这个和更高级的场景。