RuoYi
2026-03-09 156471d638e76f9662c0318bd6ba16280413aaa2
优化Excel自定义格式样式重复创建问题
1 files modified
12 ■■■■■ changed files
ruoyi-common/ruoyi-common-core/src/main/java/com/ruoyi/common/core/utils/poi/ExcelUtil.java 12 ●●●●● patch | view | raw | blame | history
ruoyi-common/ruoyi-common-core/src/main/java/com/ruoyi/common/core/utils/poi/ExcelUtil.java
@@ -80,6 +80,11 @@
    public static final String[] FORMULA_STR = { "=", "-", "+", "@" };
    /**
     * 单元格样式缓存
     */
    private Map<String, CellStyle> cellStyleCache = new HashMap<String, CellStyle>();
    /**
     * Excel sheet最大行数,默认65536
     */
    public static final int sheetSize = 65536;
@@ -1042,9 +1047,16 @@
     */
    private CellStyle createCellStyle(CellStyle cellStyle, String format)
    {
        String key = cellStyle.getIndex() + "|" + format;
        CellStyle cached = cellStyleCache.get(key);
        if (cached != null)
        {
            return cached;
        }
        CellStyle style = wb.createCellStyle();
        style.cloneStyleFrom(cellStyle);
        style.setDataFormat(wb.getCreationHelper().createDataFormat().getFormat(format));
        cellStyleCache.put(key, style);
        return style;
    }