第二章 设计程序架构 之 分布式应用

private HttpService _httpService;  
 
        public ArticleRepository() 
        { 
            _httpService = new HttpService(); 
        } 
 
        public IQueryable<Article> GetArticle s() 
        { 
            Uri host = new Uri("http://www.yourdomain.com"); 
            string path = "your/rest/path"; 
            Dictionary<string, string> parameters = new Dictionary<string, string>(); 
            NetworkCredential credential = new NetworkCredential("username", 
                "password"); 
            XDocument xml = _httpService.Get(host, path, parameters, credential);  
            return ConvertArticleXmlToList(xml).AsQueryable(); 
        } 
 
        private List<Article> ConvertArticleXmlToList(XDocument xml)  
        { 
              List<Article> article = new List<Article>(); 
              var query = xml.Descendants("Article") 
                                .Select(node =>  
                node.ToString(SaveOptions.DisableFormatting));  
                foreach (var articleXml in query)  
                { 
 
                   article.Add(ObjectSerializer.DeserializeObject<Article>(articleXml));   
                } 
                return article;  
        }