修复DayOfWeek转json异常问题

hutool-json/src/test/java/cn/hutool/json/Issue2572Test.java

@@ -0,0 +1,54 @@
+package cn.hutool.json;
+
+import cn.hutool.core.lang.TypeReference;
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.time.DayOfWeek;
+import java.time.Month;
+import java.time.MonthDay;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+
+public class Issue2572Test {
+
+	@Test
+	public void putDayOfWeekTest(){
+		final Set<DayOfWeek> weeks = new HashSet<>();
+		weeks.add(DayOfWeek.MONDAY);
+		final JSONObject obj = new JSONObject();
+		obj.set("weeks", weeks);
+		Assert.assertEquals("{\"weeks\":[\"MONDAY\"]}", obj.toString());
+
+		final Map<String, Set<DayOfWeek>> monthDays1 = obj.toBean(new TypeReference<Map<String, Set<DayOfWeek>>>() {
+		});
+		Assert.assertEquals("{weeks=[MONDAY]}", monthDays1.toString());
+	}
+
+	@Test
+	public void putMonthTest(){
+		final Set<Month> months = new HashSet<>();
+		months.add(Month.DECEMBER);
+		final JSONObject obj = new JSONObject();
+		obj.set("months", months);
+		Assert.assertEquals("{\"months\":[\"DECEMBER\"]}", obj.toString());
+
+		final Map<String, Set<Month>> monthDays1 = obj.toBean(new TypeReference<Map<String, Set<Month>>>() {
+		});
+		Assert.assertEquals("{months=[DECEMBER]}", monthDays1.toString());
+	}
+
+	@Test
+	public void putMonthDayTest(){
+		final Set<MonthDay> monthDays = new HashSet<>();
+		monthDays.add(MonthDay.of(Month.DECEMBER, 1));
+		final JSONObject obj = new JSONObject();
+		obj.set("monthDays", monthDays);
+		Assert.assertEquals("{\"monthDays\":[\"--12-01\"]}", obj.toString());
+
+		final Map<String, Set<MonthDay>> monthDays1 = obj.toBean(new TypeReference<Map<String, Set<MonthDay>>>() {
+		});
+		Assert.assertEquals("{monthDays=[--12-01]}", monthDays1.toString());
+	}
+}