导入表头名称无法确定或太长，可根据列下标对应。

ruoyi-common/src/main/java/com/ruoyi/common/annotation/Excel.java

@@ -51,6 +51,11 @@ public @interface Excel
      */
     public int scale() default -1;
 
+    /**
+     * index 下标 默认:-1(默认不开启下标)
+     */
+    public int index() default -1;
+
     /**
      * BigDecimal 舍入规则 默认:BigDecimal.ROUND_HALF_EVEN
      */

ruoyi-common/src/main/java/com/ruoyi/common/core/domain/entity/SysUser.java

@@ -24,7 +24,7 @@ public class SysUser extends BaseEntity
     private static final long serialVersionUID = 1L;
 
     /** 用户ID */
-    @Excel(name = "用户序号", cellType = ColumnType.NUMERIC, prompt = "用户编号")
+    @Excel(name = "用户序号", cellType = ColumnType.NUMERIC, prompt = "用户编号", index = 0)
     private Long userId;
 
     /** 部门ID */

ruoyi-common/src/main/java/com/ruoyi/common/utils/poi/ExcelUtil.java

@@ -277,6 +277,8 @@ public class ExcelUtil<T>
                 if (column != null)
                 {
                     fieldsMap.put(column, objects);
+                } else if(attr.index != -1){
+                    fieldsMap.put(attr.index, objects);
                 }
             }
             for (int i = titleNum + 1; i <= rows; i++)