添加 UnauthorizedException

Apewer/NetworkUtility.cs

@@ -1,19 +1,16 @@
 using Apewer.Network;
 using System;
-using System.Collections;
 using System.Collections.Generic;
 using System.Globalization;
 using System.Net;
 using System.Net.NetworkInformation;
 using System.Net.Sockets;
-using System.Runtime.InteropServices;
-using System.Text;
 
 namespace Apewer
 {
 
     /// <summary></summary>
-    public class NetworkUtility
+    public static class NetworkUtility
     {
 
         #region UDP
@@ -567,6 +564,33 @@ namespace Apewer
 
         #endregion
 
+        #region URI
+
+        /// <summary>获取路径片段。</summary>
+        /// <param name="uri">URI</param>
+        /// <param name="index">Segmentals 的索引。索引 0 的位置为空（HOST 部分）。</param>
+        /// <param name="decode">解码 URL。</param>
+        public static string Segmental(this Uri uri, int index, bool decode = false)
+        {
+            if (uri == null) return null;
+            return Segmental(uri.Segments, index, decode);
+        }
+
+        /// <summary>获取路径片段。</summary>
+        /// <param name="segmentals">片段集合。</param>
+        /// <param name="index">Segmentals 的索引。索引 0 的位置为空（HOST 部分）。</param>
+        /// <param name="decode">解码 URL。</param>
+        internal static string Segmental(string[] segmentals, int index, bool decode = false)
+        {
+            if (segmentals == null || segmentals.Length < 1) return null;
+            if (index < 1 || index >= segmentals.Length) return null;
+            var segmental = segmentals[index];
+            if (decode) segmental = TextUtility.DecodeUrl(segmental);
+            return segmental;
+        }
+
+        #endregion
+
     }
 
 }

Apewer/UnauthorizedException.cs

@@ -0,0 +1,46 @@
+using System;
+
+namespace Apewer
+{
+
+    /// <summary>表示未授权的错误。</summary>
+    /// <remarks>默认消息：Operation is not authorized.</remarks>
+    public class UnauthorizedException : Exception
+    {
+
+        static string _default = FixMessage(null);
+
+        static string FixMessage(string message)
+        {
+            const string Preset = "Operation is not authorized.";
+            if (message != null)
+            {
+                message = message.Trim();
+                if (!string.IsNullOrEmpty(message)) return message;
+            }
+
+            return Preset;
+        }
+
+        /// <summary>获取或设置默认消息。</summary>
+        public static string DefaultMessage { get => _default; set => _default = FixMessage(value); }
+
+        /// <summary>状态。</summary>
+        /// <value>Unauthorized</value>
+        public virtual string Status { get => "Unauthorized"; }
+
+        /// <summary>表示未授权的错误，此时应在前端发起授权。</summary>
+        /// <remarks>默认消息：Operation is not authorized.</remarks>
+        public UnauthorizedException() : base(DefaultMessage) { }
+
+        /// <summary>表示未授权的错误，此时应在前端发起授权。</summary>
+        /// <remarks>默认消息：Operation is not authorized.</remarks>
+        public UnauthorizedException(string message) : base(FixMessage(message)) { }
+
+        /// <summary>表示未授权的错误，此时应在前端发起授权。</summary>
+        /// <remarks>默认消息：Operation is not authorized.</remarks>
+        public UnauthorizedException(string message, Exception innerException) : base(FixMessage(message), innerException) { }
+
+    }
+
+}