今天介绍ASP.NET MVC2实现国际化与本地化方案,在asp.net中,本地化方案有很多种,可是ASP.NET MVC中呢?伤脑了吧,不过放心,今天给大伙介绍一下,包你有启发,哈哈。
一、建立自定义的LocalizationHandler类
LocalizationHandler 继承System.IO.Stream类 ,LocalizationHandler实例化后赋值给Response.Filter。这里主要通过Response.Filter来本地化MVC2.0程序。具体的Response.Filter 用法请参看MSDN.代码如下:
public class LocalizationHandler : Stream { private Stream responseStream; public LocalizationHandler(Stream inputStream) { responseStream = inputStream; } public override bool CanRead { get { return true; } } public override bool CanSeek { get { return true; } } public override bool CanWrite { get { return true; } } public override void Flush() { responseStream.Flush(); } public override long Length { get { return 0; } } long postion; public override long Position { get { return postion; } set { postion = value; } } public override int Read(byte[] buffer, int offset, int count) { return responseStream.Read(buffer, offset, count); } public override long Seek(long offset, SeekOrigin origin) { return responseStream.Seek(offset, origin); } public override void SetLength(long value) { responseStream.SetLength(value); } public override void Write(byte[] buffer, int offset, int count) { string sBuffer = System.Text.UTF8Encoding.UTF8.GetString(buffer, offset, count); string pattern = @"(<|<)=(.*?)(>|>)";//正则替换类似页面格式为这样的字符串如:<=OtherContent> sBuffer = Regex.Replace(sBuffer, pattern, delegate(Match c) { return ReadLocalizationResource().FirstOrDefault(d => d.Key == c.Groups[2].Value).Value; }); ReadLocalizationResource(); byte[] data = System.Text.UTF8Encoding.UTF8.GetBytes(sBuffer); responseStream.Write(data, 0, data.Length); } ObjectCache cache = MemoryCache.Default; private Dictionary<string, string> ReadLocalizationResource() { string _XMLPath = ""; Dictionary<string, string> cacheData = null; if (cacheData != null) { return cacheData; } Dictionary<string, string> cachedData = new Dictionary<string, string>(); string serverPath = System.Web.HttpContext.Current.Server.MapPath("~"); _XMLPath = Path.Combine(serverPath, "LocalizationResource.xml"); //建立缓存(使用.net4.0最新缓存机制:System.Runtime.Caching;) if (cache["myCache"] == null) { CacheItemPolicy policy = new CacheItemPolicy(); policy.SlidingExpiration = TimeSpan.FromMinutes(60); policy.ChangeMonitors.Add(new HostFileChangeMonitor(new List<string> { _XMLPath })); var items = XElement.Load(_XMLPath).Elements("Module").Elements("item"); foreach (var item in items) { string key = item.Attribute("name").Value; string value = item.Value; cachedData.Add(key, value); } cache.Set("myCache", cachedData, policy); return cachedData; } return (Dictionary<string, string>)cache["myCache"]; } }
代码中的65行开始,是本地化核心代码,在这里我们用正则匹配文本。用.NET4.0 System.Runtime.Caching;(尝鲜)缓存机制提高程序执行效率。
二、修改global.asax文件
在global.asax中加入以下代码:
protected void Application_BeginRequest(Object sender, EventArgs e) { Response.Filter = new LocalizationHandler(Response.Filter); }
三、建立自定义的XML本地化资源文件
截图如下:
OK,一切准备就绪,我们在不用Response.Filter 过滤的情况下,运行截图如下:
使用上文中Response.Filter过滤后:
结果将第三点中的XML作为传统的资源文件后本地化了MVC View 页面。
四、小结
本文ASP.NET MVC2实现国际化与本地化方案用另外一套方案解决了MVC2.0程序的本地化问题,是否对您有所启发?
2011/9/8 19:17:06 | ASP.NET MVC教程 | |