3

我遇到的问题是它只是将 XML 标记写入文件,但它不是格式正确的 XML 文件。

该文件只是按如下方式填充:

<LogEntry><Date>12/04/2012 11:16:26</Date><Message>An error message.</Message><StackTrace>..StackTrace omitted..</StackTrace></LogEntry>
<LogEntry><Date>12/04/2012 11:21:27</Date><Message>Another error message.</Message><StackTrace>..StackTrace omitted..</StackTrace></LogEntry>
<LogEntry><Date>12/04/2012 11:21:37</Date><Message>More messages.</Message><StackTrace>..StackTrace omitted..</StackTrace></LogEntry>

我有什么方法可以附加到结构正确的 XML 文档中吗?

理想情况下,它会如下所示:

<?xml version="1.0" encoding="utf-8"?>
<Logs>
    <LogEntry><Date>12/04/2012 11:16:26</Date><Message>An error message.</Message><StackTrace>..StackTrace omitted..</StackTrace></LogEntry>
    <LogEntry><Date>12/04/2012 11:21:27</Date><Message>Another error message.</Message><StackTrace>..StackTrace omitted..</StackTrace></LogEntry>
    <LogEntry><Date>12/04/2012 11:21:37</Date><Message>More messages.</Message><StackTrace>..StackTrace omitted..</StackTrace></LogEntry>
</Logs>

我正在使用的代码是:

public class MyXmlLayout : XmlLayoutBase
{
    protected override void FormatXml(XmlWriter writer, LoggingEvent loggingEvent)
    {
        writer.WriteStartElement("LogEntry");

        writer.WriteStartElement("Date");
        writer.WriteString(loggingEvent.TimeStamp.ToString(CultureInfo.CurrentCulture));
        writer.WriteEndElement();

        writer.WriteStartElement("Message");
        writer.WriteString(loggingEvent.RenderedMessage);
        writer.WriteEndElement();

        writer.WriteStartElement("StackTrace");
        writer.WriteString(loggingEvent.ExceptionObject.StackTrace);
        writer.WriteEndElement();

        if (loggingEvent.ExceptionObject.InnerException != null)
        {
            writer.WriteStartElement("InnerException");
            writer.WriteString(loggingEvent.ExceptionObject.InnerException.ToString());
            writer.WriteEndElement();
        }

        writer.WriteEndElement();
    }
}

对此的配置是:

<log4net>
  <appender name="LogFileAppender" type="log4net.Appender.RollingFileAppender" >
    <param name="File" value="Logs/log.xml" />
    <param name="AppendToFile" value="true" />
    <rollingStyle value="Size" />
    <maxSizeRollBackups value="10" />
    <maximumFileSize value="10MB" />
    <staticLogFileName value="true" />
    <layout type="MyNamespace.MyXmlLayout" />
  </appender>

  <root>
    <level value="DEBUG" />
    <appender-ref ref="LogFileAppender" />
  </root>
</log4net>
4

1 回答 1

5

该类XmlLayoutBase不支持您要查找的内容。原因很简单:如果它必须确保 xml 始终格式正确,那么每当向文件中添加条目时,它就需要覆盖关闭的根节点。简单地将 xml 片段附加到文件中更容易、更快捷。

于 2012-04-12T12:19:10.837 回答