做了列宽的自动适配，但是@ColumnWidth失效了

[cxz0101]

就是想要有指定的就按照指定长度 @ColumnWidth来，没有的话，就是自动适应，这个怎么写呢，谢谢

[psxjoy]

The "auto-width" feature is still in the experimental phase, so we can't guarantee full compatibility with tables at the moment.

[cxz0101]

我拓展了这个代码，代码如下，想问一下，这样可以嘛，测试是没问题的，可以识别@ColumnWidth

public class CustomColumnWidthStrategy extends LongestMatchColumnWidthStyleStrategy {

private static final int MAX_COLUMN_WIDTH = 255;
private static final int MIN_COLUMN_WIDTH = 20;

@Override
protected void setColumnWidth(WriteSheetHolder writeSheetHolder, List<WriteCellData<?>> cellDataList,
                              Cell cell, Head head, Integer relativeRowIndex, Boolean isHead) {
    // 检查是否有 @ColumnWidth 注解
    ColumnWidth columnWidthAnnotation = head.getField().getAnnotation(ColumnWidth.class);
    if (columnWidthAnnotation != null) {
        // 有注解时直接按注解宽度设置列宽并返回
        int specifiedWidth = columnWidthAnnotation.value();
        writeSheetHolder.getSheet().setColumnWidth(cell.getColumnIndex(), specifiedWidth * 256);
        return;
    }

    // 如果没有注解，则按自动宽度计算逻辑
    Integer columnWidth = dataLength(cellDataList, cell, isHead);
    if (columnWidth != null && columnWidth >= 0) {
        if (columnWidth > MAX_COLUMN_WIDTH) {
            columnWidth = MAX_COLUMN_WIDTH;
        } else if (columnWidth < MIN_COLUMN_WIDTH) {
            // 小于最小宽度时，按比例扩展
            columnWidth *= 2;
        }
        writeSheetHolder.getSheet().setColumnWidth(cell.getColumnIndex(), columnWidth * 256);
    }
}

private Integer dataLength(List<WriteCellData<?>> cellDataList, Cell cell, Boolean isHead) {
    if (isHead) {
        return cell.getStringCellValue().getBytes().length;
    } else {
        WriteCellData<?> cellData = (WriteCellData)cellDataList.get(0);
        CellDataTypeEnum type = cellData.getType();
        if (type == null) {
            return -1;
        } else {
            switch (type) {
                case STRING:
                    return cellData.getStringValue().getBytes().length;
                case BOOLEAN:
                    return cellData.getBooleanValue().toString().getBytes().length;
                case NUMBER:
                    return cellData.getNumberValue().toString().getBytes().length;
                default:
                    return -1;
            }
        }
    }
}

}

[psxjoy]

我拓展了这个代码，代码如下，想问一下，这样可以嘛，测试是没问题的，可以识别@ColumnWidth

public class CustomColumnWidthStrategy extends LongestMatchColumnWidthStyleStrategy {

private static final int MAX_COLUMN_WIDTH = 255;
private static final int MIN_COLUMN_WIDTH = 20;

@Override
protected void setColumnWidth(WriteSheetHolder writeSheetHolder, List<WriteCellData<?>> cellDataList,
                              Cell cell, Head head, Integer relativeRowIndex, Boolean isHead) {
    // 检查是否有 @ColumnWidth 注解
    ColumnWidth columnWidthAnnotation = head.getField().getAnnotation(ColumnWidth.class);
    if (columnWidthAnnotation != null) {
        // 有注解时直接按注解宽度设置列宽并返回
        int specifiedWidth = columnWidthAnnotation.value();
        writeSheetHolder.getSheet().setColumnWidth(cell.getColumnIndex(), specifiedWidth * 256);
        return;
    }

    // 如果没有注解，则按自动宽度计算逻辑
    Integer columnWidth = dataLength(cellDataList, cell, isHead);
    if (columnWidth != null && columnWidth >= 0) {
        if (columnWidth > MAX_COLUMN_WIDTH) {
            columnWidth = MAX_COLUMN_WIDTH;
        } else if (columnWidth < MIN_COLUMN_WIDTH) {
            // 小于最小宽度时，按比例扩展
            columnWidth *= 2;
        }
        writeSheetHolder.getSheet().setColumnWidth(cell.getColumnIndex(), columnWidth * 256);
    }
}

private Integer dataLength(List<WriteCellData<?>> cellDataList, Cell cell, Boolean isHead) {
    if (isHead) {
        return cell.getStringCellValue().getBytes().length;
    } else {
        WriteCellData<?> cellData = (WriteCellData)cellDataList.get(0);
        CellDataTypeEnum type = cellData.getType();
        if (type == null) {
            return -1;
        } else {
            switch (type) {
                case STRING:
                    return cellData.getStringValue().getBytes().length;
                case BOOLEAN:
                    return cellData.getBooleanValue().toString().getBytes().length;
                case NUMBER:
                    return cellData.getNumberValue().toString().getBytes().length;
                default:
                    return -1;
            }
        }
    }
}

}

Nice try. I don’t think there’s anything wrong with it, but make sure it aligns with the requirements of your business logic.

[cxz0101]

好的，谢谢啦

[cxz0101]

你好，我这边看到评论已经删除了，请问一下是有更好的解决方案吗，谢谢啦

…

------------------ 原始邮件 ------------------ 发件人: "alibaba/easyexcel" ***@***.***>; 发送时间: 2024年10月28日(星期一) 晚上11:04 ***@***.***>; ***@***.******@***.***>; 主题: Re: [alibaba/easyexcel] ***@***.***失效了 (Issue #4034) maybe this solution will solve your problem click — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you authored the thread.Message ID: ***@***.***>

[psxjoy]

That reply was not a real reply, but a link to an advertisement with a misleading nature. So I deleted it 获取 Outlook for iOS<https://aka.ms/o0ukef>

…

________________________________ 发件人: cxz ***@***.***> 发送时间: Tuesday, October 29, 2024 5:43:42 PM 收件人: alibaba/easyexcel ***@***.***> 抄送: psxjoy ***@***.***>; Assign ***@***.***> 主题: Re: [alibaba/easyexcel] ***@***.***失效了 (Issue #4034) 你好，我这边看到评论已经删除了，请问一下是有更好的解决方案吗，谢谢啦

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