添加项目文件。

HT.Cloud.Code/Util/TextHelper.cs

@@ -0,0 +1,85 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace HT.Cloud.Code
+{
+	public class TextHelper
+	{
+		/// <summary>
+		/// 获取默认值
+		/// </summary>
+		/// <param name="value"></param>
+		/// <param name="defaultValue"></param>
+		/// <returns></returns>
+		public static string GetCustomValue(string value, string defaultValue)
+		{
+			if (string.IsNullOrEmpty(value))
+			{
+				return defaultValue;
+			}
+			else
+			{
+				return value;
+			}
+		}
+
+		/// <summary>
+		/// 截取指定长度的字符串
+		/// </summary>
+		/// <param name="value"></param>
+		/// <param name="length"></param>
+		/// <returns></returns>
+		public static string GetSubString(string value, int length, bool ellipsis = false)
+		{
+			if (string.IsNullOrEmpty(value))
+			{
+				return value;
+			}
+			if (value.Length > length)
+			{
+				value = value.Substring(0, length);
+				if (ellipsis)
+				{
+					value += "...";
+				}
+			}
+			return value;
+		}
+
+		/// <summary>
+		/// 字符串转指定类型数组
+		/// </summary>
+		/// <param name="value"></param>
+		/// <param name="split"></param>
+		/// <returns></returns>
+		public static T[] SplitToArray<T>(string value, char split)
+		{
+			T[] arr = value.Split(new string[] { split.ToString() }, StringSplitOptions.RemoveEmptyEntries).CastSuper<T>().ToArray();
+			return arr;
+		}
+
+		/// <summary>
+		/// 判断是否有交集
+		/// </summary>
+		/// <typeparam name="T"></typeparam>
+		/// <param name="list1"></param>
+		/// <param name="list2"></param>
+		/// <returns></returns>
+		public static bool IsArrayIntersection<T>(List<T> list1, List<T> list2)
+		{
+			List<T> t = list1.Distinct().ToList();
+
+			var exceptArr = t.Except(list2).ToList();
+
+			if (exceptArr.Count < t.Count)
+			{
+				return true;
+			}
+			else
+			{
+				return false;
+			}
+		}
+	}
+}