唉，眼看着ASP.NET第一步已经出版2年了，这2年貌似自己进步也不是很大，最近完成了一个项目，分享一点代码吧，以后要复制粘贴自己也方便点，因为主要是给自己看的，大家看不懂别见怪。
1、WCF中统一处理异常，并自动包装为 FaultException 返回给客户端：
先建立这么一个ServiceBehavior特性：
[AttributeUsage(AttributeTargets.Class, AllowMultiple = false, Inherited = false)]
public sealed class ErrorHandlingBehaviorAttribute : Attribute, IServiceBehavior
{
#region IServiceBehavior Memberspublic void AddBindingParameters(ServiceDescription serviceDescription, System.ServiceModel.ServiceHostBase serviceHostBase, System.Collections.ObjectModel.Collection<ServiceEndpoint> endpoints, System.ServiceModel.Channels.BindingParameterCollection bindingParameters)
{
}public void ApplyDispatchBehavior(ServiceDescription serviceDescription, System.ServiceModel.ServiceHostBase serviceHostBase)
{
IErrorHandler handler = new ErrorHandler();foreach (ChannelDispatcher dispatcher in serviceHostBase.ChannelDispatchers)
{
dispatcher.ErrorHandlers.Add(handler);
}
}public void Validate(ServiceDescription serviceDescription, System.ServiceModel.ServiceHostBase serviceHostBase)
{
}#endregion
}
然后呢，需要实现啊这么一个自定义的ErrorHandler：
public class ErrorHandler : IErrorHandler
{
#region IErrorHandler Members
/// <summary>
/// Log exception
/// </summary>
/// <param name="error"></param>
/// <returns></returns>
public bool HandleError(Exception error)
{
// Ignore communication exception, only log business logic exception
if (error is CommunicationException)
return true;
Log.LogException(error);
return true;Log类代码就不写了，爱怎么记录就怎么记录，最后只要把这个特性应用到Service的类上即可。
2、把XML结构转换为span包装的HTML，这样就可以直接为XML的各个层次应用样式啦：
/// <summary>
/// Convert <infs><inf>a</inf><inf>b</inf></infs> to <span class="infs"><span class="inf">a</span><span class="inf">b</span></span>
/// </summary>
/// <param name="xml"></param>
/// <returns></returns>
public static string ConvertXmlToHtml(this string xml)
{
if (string.IsNullOrEmpty(xml))
return string.Empty;
XElement root
= XElement.Parse(string.Format("<root>{0}</root>", xml));foreach (var el in root.DescendantsAndSelf())XElement newRoot
= XForm(root);XForm的代码如下：
private static XElement XForm(XElement source)
{
if (source.Name == "a") return source;if (source.Annotation<XElement>() != null)
{
XElement anno = source.Annotation<XElement>();
return new XElement(anno.Name,
anno.Attributes(),
anno.Nodes().Select((XNode n) =>
{
XElement annoEl = n as XElement;
if (annoEl != null)
{
return (object)(source.Nodes().Select((XNode n2) =>
{
XElement e2 = n2 as XElement;
if (e2 == null)
return n2;
else
return XForm(e2);
}));
}
else
return n;
})
);
}
else
{
return new XElement(source.Name,
source.Attributes(),
source.Nodes().Select(n =>
{
XElement el = n as XElement;
if (el == null)
return n;
else
return XForm(el);
})
);
}
}
3、LINQ TO XML来更新和删除XML：
/// <summary>
/// Remove unwanted embedded translation according to culturecode
/// </summary>
/// <param name="text"></param>
/// <param name="cultureCode"></param>
/// <returns></returns>
public static string RemoveTranslationFromNotePanel(string text, string cultureCode)
{
var xml = XDocument.Parse(text);
var translationList = from t in xml.Descendants("trans")
select t;
if (cultureCode == "cs")
translationList = translationList.Where(t => t.Attribute("lang").Value == "CN");
if (cultureCode == "ch")
translationList = translationList.Where(t => t.Attribute("lang").Value == "CNS");
translationList.Remove();return xml.ToString();
}/// <summary>
/// Separate out title in notepanel xml
/// </summary>
/// <param name="text"></param>
/// <param name="title"></param>
/// <returns></returns>
public static string RemoteTitleFromNotePanelAndGetTitle(string text, ref string title)
{
var xml = XDocument.Parse(text);
var titleElement = (from t in xml.Descendants("title") select t).FirstOrDefault();
if (titleElement != null)
{
title = titleElement.Value;
titleElement.Remove();
}
return xml.ToString();
}/// <summary>
/// Handle <gl></gl>,<nondv></nondv> and <x></x> tags
/// </summary>
/// <param name="text"></param>
/// <returns></returns>
public static string FormatSenseDefinition(string text)
{
var xml = XDocument.Parse(text);
// <gl>content here</gl> -> <gl>(= content here)</gl>
var glTag = (from t in xml.Descendants("gl") select t).ToList();
glTag.ForEach(gl => gl.Value = string.Format("(= {0})", gl.Value));// <x refurl="guidewordblock_id">content here</x> -> <x refurl="guidewordblock_id"><a title="headword">content here</a></x>
var xTag = (from t in xml.Descendants("x") where t.Attribute("refurl") != null select t).ToList();
for (int i = 0; i < xTag.Count; i++)
{
var x = xTag[i];
int guidewordID = 0;
if (int.TryParse(x.Attribute("refurl").Value, out guidewordID))
{
if (guidewordID != 0)
{
var headwordText = ContentHelper.GetHeadwordTextFromGuidewordID(guidewordID);
if (!string.IsNullOrEmpty(headwordText))
{
x.ReplaceAll(new XElement("a", x.Value, new XAttribute("title", headwordText)));
}
}
else
x.ReplaceAll(new XElement("a", x.Value, new XAttribute("title", x.Value)));
}
}// <nondv refurl="guidewordblock_id">content here</nondv> -> <nondv refurl="guidewordblock_id"><a title="headword">content here</a></nondv>
var nondvTag = (from t in xml.Descendants("nondv") where t.Attribute("refurl") != null select t).ToList();
for (int i = 0; i < nondvTag.Count; i++)
{
var nondv = nondvTag[i];
int guidewordID = 0;
if (int.TryParse(nondv.Attribute("refurl").Value, out guidewordID))
{
if (guidewordID != 0)
{
var headwordText = ContentHelper.GetHeadwordTextFromGuidewordID(guidewordID);
if (!string.IsNullOrEmpty(headwordText))
{
nondv.ReplaceAll(new XElement("a", nondv.Value, new XAttribute("title", headwordText)));
}
}
else
nondv.ReplaceAll(new XElement("a", nondv.Value, new XAttribute("title", nondv.Value)));
}
};return xml.ToString();
}
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