[feat] Excel读取支持自动识别TimeSpan

Author: nnhy

NewLife.Core/IO/ExcelReader.cs

@@ -185,7 +185,7 @@ private void Parse()
     private Object? ChangeType(Object? val, ExcelNumberFormat st)
     {
         // 日期格式。1900-1-1依赖的天数，例如1900-1-1时为1
-        if ((st.Format.Contains("yy") || st.Format.Contains("mmm")))
+        if (st.Format.Contains("yy") || st.Format.Contains("mmm") || st.NumFmtId >= 14 && st.NumFmtId <= 17 || st.NumFmtId == 22)
         {
             if (val is String str)
             {
@@ -199,6 +199,13 @@ private void Parse()
                 //val = dt.ToFullString();
             }
         }
+        else if (st.NumFmtId is >= 18 and <= 21 or >= 45 and <= 47)
+        {
+            if (val is String str)
+            {
+                val = TimeSpan.FromSeconds(Math.Round(str.ToDouble() * 24 * 3600));
+            }
+        }
 
         return val;
     }

XUnitTest.Core/IO/ExcelReaderTests.cs

@@ -18,21 +18,23 @@ public void Test1()
         var rows = reader.ReadRows().ToList();
         Assert.Equal(927, rows.Count);
 
-        var names = "序号,名字,昵称,启用,年龄,生日,时间,余额,比率".Split(',');
+        var names = "序号,名字,昵称,启用,年龄,生日,时间,余额,比率,开始时间,结束时间".Split(',');
         var fields = rows[0].Cast<String>().ToArray();
         Assert.Equal(names.Length, fields.Length);
         for (var i = 0; i < names.Length; i++)
         {
             Assert.Equal(names[i], fields[i]);
         }
 
-        var values = "111,Stone,大石头,1,36.6,1984-07-01,2020-03-04 20:08:45,323.452,0.234".Split(',');
+        var values = "111,Stone,大石头,1,36.6,1984-07-01,2020-03-04 20:08:45,323.452,0.234,11:22:00,23:59:00".Split(',');
         var row1 = rows[1];
         Assert.Equal(values.Length, row1.Length);
         for (var i = 0; i < values.Length; i++)
         {
             if (row1[i] is DateTime dt)
                 Assert.Equal(values[i].ToDateTime(), dt);
+            else if (row1[i] is TimeSpan ts)
+                Assert.Equal(TimeSpan.Parse(values[i]), ts);
             else
                 Assert.Equal(values[i], row1[i]);
         }