From da146c2a708387059d4e31cbe1db0fdd8ceb41e3 Mon Sep 17 00:00:00 2001
From: RuoYi <yzz_ivy@163.com>
Date: Wed, 19 Aug 2020 11:20:31 +0800
Subject: [PATCH] =?UTF-8?q?Excel=E6=B3=A8=E8=A7=A3=E6=94=AF=E6=8C=81?=
 =?UTF-8?q?=E8=AE=BE=E7=BD=AEBigDecimal=E7=B2=BE=E5=BA=A6&=E8=88=8D?=
 =?UTF-8?q?=E5=85=A5=E8=A7=84=E5=88=99?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../java/com/ruoyi/common/annotation/Excel.java  | 13 ++++++++++++-
 .../com/ruoyi/common/utils/poi/ExcelUtil.java    | 16 ++++++++++++++--
 2 files changed, 26 insertions(+), 3 deletions(-)

diff --git a/ruoyi-common/src/main/java/com/ruoyi/common/annotation/Excel.java b/ruoyi-common/src/main/java/com/ruoyi/common/annotation/Excel.java
index eed41a2ab..f781b1e37 100644
--- a/ruoyi-common/src/main/java/com/ruoyi/common/annotation/Excel.java
+++ b/ruoyi-common/src/main/java/com/ruoyi/common/annotation/Excel.java
@@ -4,6 +4,7 @@ import java.lang.annotation.ElementType;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
+import java.math.BigDecimal;
 
 /**
  * 自定义导出Excel数据注解
@@ -30,7 +31,7 @@ public @interface Excel
     public String dateFormat() default "";
 
     /**
-     * 如果是字典类型，请设置字典的type值
+     * 如果是字典类型，请设置字典的type值 (如: sys_user_sex)
      */
     public String dictType() default "";
 
@@ -44,6 +45,16 @@ public @interface Excel
      */
     public String separator() default ",";
 
+    /**
+     * BigDecimal 精度 默认:-1(默认不开启BigDecimal格式化)
+     */
+    public int scale() default -1;
+
+    /**
+     * BigDecimal 舍入规则 默认:BigDecimal.ROUND_HALF_EVEN
+     */
+    public int roundingMode() default BigDecimal.ROUND_HALF_EVEN;
+
     /**
      * 导出类型（0数字 1字符串）
      */
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 d950b77f4..d5a23b155 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
@@ -8,6 +8,7 @@ import java.io.OutputStream;
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
 import java.math.BigDecimal;
+import java.text.DecimalFormat;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Comparator;
@@ -546,10 +547,14 @@ public class ExcelUtil<T>
                 {
                     cell.setCellValue(convertByExp(Convert.toStr(value), readConverterExp, separator));
                 }
-                else if (StringUtils.isNotEmpty(dictType))
+                else if (StringUtils.isNotEmpty(dictType) && StringUtils.isNotNull(value))
                 {
                     cell.setCellValue(convertDictByExp(Convert.toStr(value), dictType, separator));
                 }
+                else if (value instanceof BigDecimal && -1 != attr.scale())
+                {
+                    cell.setCellValue((((BigDecimal) value).setScale(attr.scale(), attr.roundingMode())).toString());
+                }
                 else
                 {
                     // 设置列类型
@@ -896,7 +901,14 @@ public class ExcelUtil<T>
                     }
                     else
                     {
-                        val = new BigDecimal(val.toString()); // 浮点格式处理
+                        if ((Double) val % 1 > 0)
+                        {
+                            val = new BigDecimal(val.toString());
+                        }
+                        else
+                        {
+                            val = new DecimalFormat("0").format(val);
+                        }
                     }
                 }
                 else if (cell.getCellTypeEnum() == CellType.STRING)