From 5e8ccda522d4288774cd6a80edd57bb63a914909 Mon Sep 17 00:00:00 2001
From: coolkidhay <coolkidhay@foxmail.com>
Date: 星期三, 09 三月 2022 14:39:19 +0800
Subject: [PATCH] 日期转换错误，issue地址：https://gitee.com/y_project/RuoYi-Vue/issues/I4X0U7

---
 ruoyi-common/src/main/java/com/ruoyi/common/utils/poi/ExcelUtil.java |   48 ++++++++++++++++++++++++++++++++++++++++--------
 1 files changed, 40 insertions(+), 8 deletions(-)

diff --git a/ruoyi-common/src/main/java/com/ruoyi/common/utils/poi/ExcelUtil.java b/ruoyi-common/src/main/java/com/ruoyi/common/utils/poi/ExcelUtil.java
index aa77e9b..eb94075 100644
--- a/ruoyi-common/src/main/java/com/ruoyi/common/utils/poi/ExcelUtil.java
+++ b/ruoyi-common/src/main/java/com/ruoyi/common/utils/poi/ExcelUtil.java
@@ -9,6 +9,8 @@
 import java.lang.reflect.Method;
 import java.math.BigDecimal;
 import java.text.DecimalFormat;
+import java.time.LocalDate;
+import java.time.LocalDateTime;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Comparator;
@@ -88,7 +90,6 @@
 
     public static final String[] FORMULA_STR = { "=", "-", "+", "@" };
 
-
     /**
      * Excel sheet鏈�澶ц鏁帮紝榛樿65536
      */
@@ -133,7 +134,7 @@
      * 褰撳墠琛屽彿
      */
     private int rownum;
-    
+
     /**
      * 鏍囬
      */
@@ -315,7 +316,7 @@
                             String dateFormat = field.getAnnotation(Excel.class).dateFormat();
                             if (StringUtils.isNotEmpty(dateFormat))
                             {
-                                val = DateUtils.parseDateToStr(dateFormat, (Date) val);
+                                val = parseDateToStr(dateFormat, val);
                             }
                             else
                             {
@@ -327,7 +328,7 @@
                     {
                         val = Convert.toInt(val);
                     }
-                    else if (Long.TYPE == fieldType || Long.class == fieldType)
+                    else if ((Long.TYPE == fieldType || Long.class == fieldType) && StringUtils.isNumeric(Convert.toStr(val)))
                     {
                         val = Convert.toLong(val);
                     }
@@ -410,7 +411,7 @@
     {
         return exportExcel(list, sheetName, StringUtils.EMPTY);
     }
-    
+
     /**
      * 瀵筶ist鏁版嵁婧愬皢鍏堕噷闈㈢殑鏁版嵁瀵煎叆鍒癳xcel琛ㄥ崟
      * 
@@ -432,7 +433,6 @@
      * @param list 瀵煎嚭鏁版嵁闆嗗悎
      * @param sheetName 宸ヤ綔琛ㄧ殑鍚嶇О
      * @return 缁撴灉
-     * @throws IOException
      */
     public void exportExcel(HttpServletResponse response, List<T> list, String sheetName)
     {
@@ -447,7 +447,6 @@
      * @param sheetName 宸ヤ綔琛ㄧ殑鍚嶇О
      * @param title 鏍囬
      * @return 缁撴灉
-     * @throws IOException
      */
     public void exportExcel(HttpServletResponse response, List<T> list, String sheetName, String title)
     {
@@ -824,7 +823,7 @@
                 String dictType = attr.dictType();
                 if (StringUtils.isNotEmpty(dateFormat) && StringUtils.isNotNull(value))
                 {
-                    cell.setCellValue(DateUtils.parseDateToStr(dateFormat, (Date) value));
+                    cell.setCellValue(parseDateToStr(dateFormat, value));
                 }
                 else if (StringUtils.isNotEmpty(readConverterExp) && StringUtils.isNotNull(value))
                 {
@@ -1397,4 +1396,37 @@
         }
         return sheetIndexPicMap;
     }
+
+    /**
+     * 鏍煎紡鍖栦笉鍚岀被鍨嬬殑鏃ユ湡瀵硅薄
+     * 
+     * @param dateFormat 鏃ユ湡鏍煎紡
+     * @param val 琚牸寮忓寲鐨勬棩鏈熷璞�
+     * @return 鏍煎紡鍖栧悗鐨勬棩鏈熷瓧绗�
+     */
+    public String parseDateToStr(String dateFormat, Object val)
+    {
+        if (val == null)
+        {
+            return "";
+        }
+        String str;
+        if (val instanceof Date)
+        {
+            str = DateUtils.parseDateToStr(dateFormat, (Date) val);
+        }
+        else if (val instanceof LocalDateTime)
+        {
+            str = DateUtils.parseDateToStr(dateFormat, DateUtils.toDate((LocalDateTime) val));
+        }
+        else if (val instanceof LocalDate)
+        {
+            str = DateUtils.parseDateToStr(dateFormat, DateUtils.toDate((LocalDate) val));
+        }
+        else
+        {
+            str = val.toString();
+        }
+        return str;
+    }
 }

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