From a0714907e895c74c66423f4fb74f6794cfe50f92 Mon Sep 17 00:00:00 2001
From: 6tail <6tail@6tail.cn>
Date: Fri, 24 Apr 2020 00:05:20 +0800
Subject: [PATCH] =?UTF-8?q?=E5=A2=9E=E5=8A=A0=E9=98=B4=E5=8E=86=E6=9C=88?=
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---
 src/main/java/com/nlf/calendar/Lunar.java | 23 +++++++++++++++++++++--
 1 file changed, 21 insertions(+), 2 deletions(-)

diff --git a/src/main/java/com/nlf/calendar/Lunar.java b/src/main/java/com/nlf/calendar/Lunar.java
index 5bd1015..3bc3574 100644
--- a/src/main/java/com/nlf/calendar/Lunar.java
+++ b/src/main/java/com/nlf/calendar/Lunar.java
@@ -104,7 +104,7 @@ public class Lunar{
    *
    * @param lunarYear 年（农历）
    * @param lunarMonth 月（农历），1到12，闰月为负，即闰2月=-2
-   * @param lunarDay 日（农历），1到31
+   * @param lunarDay 日（农历），1到30
    */
   public Lunar(int lunarYear,int lunarMonth,int lunarDay){
     this(lunarYear,lunarMonth,lunarDay,0,0,0);
@@ -115,12 +115,31 @@ public class Lunar{
    *
    * @param lunarYear 年（农历）
    * @param lunarMonth 月（农历），1到12，闰月为负，即闰2月=-2
-   * @param lunarDay 日（农历），1到31
+   * @param lunarDay 日（农历），1到30
    * @param hour 小时（阳历）
    * @param minute 分钟（阳历）
    * @param second 秒钟（阳历）
    */
   public Lunar(int lunarYear,int lunarMonth,int lunarDay,int hour,int minute,int second){
+    int m = Math.abs(lunarMonth);
+    if(m<1||m>12){
+      throw new IllegalArgumentException("lunar month must between 1 and 12, or negative");
+    }
+    if(lunarMonth<0){
+      int leapMonth = LunarUtil.getLeapMonth(lunarYear);
+      if(leapMonth==0){
+        throw new IllegalArgumentException(String.format("no leap month in lunar year %d",lunarYear));
+      }else if(leapMonth!=m){
+        throw new IllegalArgumentException(String.format("leap month is %d in lunar year %d",leapMonth,lunarYear));
+      }
+    }
+    if(lunarDay<1||lunarDay>30){
+      throw new IllegalArgumentException("lunar day must between 1 and 30");
+    }
+    int days = LunarUtil.getDaysOfMonth(lunarYear,lunarMonth);
+    if(lunarDay>days){
+      throw new IllegalArgumentException(String.format("only %d days in lunar year %d month %d",days,lunarYear,lunarMonth));
+    }
     this.year = lunarYear;
     this.month = lunarMonth;
     this.day = lunarDay;