Excel支持注解align对齐方式

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

@@ -106,6 +106,27 @@ public @interface Excel
     public boolean isStatistics() default false;
 
     /**
+     * 导出字段对齐方式（0：默认；1：靠左；2：居中；3：靠右）
+     */
+    Align align() default Align.AUTO;
+
+    public enum Align
+    {
+        AUTO(0), LEFT(1), CENTER(2), RIGHT(3);
+        private final int value;
+
+        Align(int value)
+        {
+            this.value = value;
+        }
+
+        public int value()
+        {
+            return this.value;
+        }
+    }
+
+    /**
      * 字段类型（0：导出导入；1：仅导出；2：仅导入）
      */
     Type type() default Type.ALL;

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

@@ -473,6 +473,21 @@ public class ExcelUtil<T>
         style.setFont(totalFont);
         styles.put("total", style);
 
+        style = wb.createCellStyle();
+        style.cloneStyleFrom(styles.get("data"));
+        style.setAlignment(HorizontalAlignment.LEFT);
+        styles.put("data1", style);
+
+        style = wb.createCellStyle();
+        style.cloneStyleFrom(styles.get("data"));
+        style.setAlignment(HorizontalAlignment.CENTER);
+        styles.put("data2", style);
+
+        style = wb.createCellStyle();
+        style.cloneStyleFrom(styles.get("data"));
+        style.setAlignment(HorizontalAlignment.RIGHT);
+        styles.put("data3", style);
+
         return styles;
     }
 
@@ -555,7 +570,8 @@ public class ExcelUtil<T>
             {
                 // 创建cell
                 cell = row.createCell(column);
-                cell.setCellStyle(styles.get("data"));
+                int align = attr.align().value();
+                cell.setCellStyle(styles.get("data" + (align >= 1 && align <= 3 ? align : "")));
 
                 // 用于读取对象中的属性
                 Object value = getTargetValue(vo, field, attr);