Routing in ASP.NET Web API和配置文件的设定读取

Routing Tables

In ASP.NET Web API, a controller is a class that handles HTTP requests. The public methods of the controller are called action methods or simply actions. When the Web API framework receives a request, it routes the request to an action.

To determine which action to invoke, the framework uses a routing table. The Visual Studio project template for Web API creates a default route:

routes.MapHttpRoute(
    name: "API Default",
    routeTemplate: "api/{controller}/{id}",
    defaults: new { id = RouteParameter.Optional }
);

Self-Host a Web API (C#)

/// <summary>
        /// 根据键值获取配置文件
        /// </summary>
        /// <param name="key">键值</param>
        /// <param name="defaultValue">默认值</param>
        /// <returns></returns>
        public static string GetConfig(string key, string defaultValue)
        {
            string val = defaultValue;
            if (ConfigurationManager.AppSettings.AllKeys.Contains(key))
                val = ConfigurationManager.AppSettings[key];
            if (val == null)
                val = defaultValue;
            return val;
        }

        /// <summary>
        /// 写配置文件,如果节点不存在则自动创建
        /// </summary>
        /// <param name="key">键值</param>
        /// <param name="value">值</param>
        /// <returns></returns>
        public static bool SetConfig(string key, string value)
        {
            try
            {            
                Configuration conf = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
                if (!conf.AppSettings.Settings.AllKeys.Contains(key))
                    conf.AppSettings.Settings.Add(key, value);
                else
                    conf.AppSettings.Settings[key].Value = value;                ;
                conf.Save();               
                return true;
            }
            catch(Exception e)
            { 
                return false; 
            }
        }

        /// <summary>
        /// 写配置文件(用键值创建),如果节点不存在则自动创建
        /// </summary>
        /// <param name="dict">键值集合</param>
        /// <returns></returns>
        public static bool SetConfig(Dictionary<string, string> dict)
        {
            try
            {
                if (dict == null || dict.Count == 0)
                    return false;
                Configuration conf = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
                foreach (string key in dict.Keys)
                {
                    if (!conf.AppSettings.Settings.AllKeys.Contains(key))
                        conf.AppSettings.Settings.Add(key, dict[key]);
                    else
                        conf.AppSettings.Settings[key].Value = dict[key];
                }
                conf.Save();
                return true;
            }
            catch { return false; }
        }
    }