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easyExcel使用报错

easyExcel使用报错

作者: liaijuyyer | 来源:发表于2021-11-23 18:38 被阅读0次

报错信息

easyexcel The maximum length of cell contents (text) is 32,767 characters

使用easyexcel向excel中写内容出现了单元格大小不能超过32,767的限制,这是因为excel 2007限制单个cell不能超过32767个字符

解决办法
重写poi包下SpreadsheetVersion类
在自己的项目文件夹下创建org.apache.poi.ss.SpreadsheetVersion 类,复制poi中的该类源码,excel2007中的最后一个值改为int类型最大值。重试导出问题解决。

/**
 * @author liliang
 * @date 2021/11/23
 **/
public enum SpreadsheetVersion {
    /**
     * Excel97 format aka BIFF8
     * <ul>
     * <li>The total number of available rows is 64k (2^16)</li>
     * <li>The total number of available columns is 256 (2^8)</li>
     * <li>The maximum number of arguments to a function is 30</li>
     * <li>Number of conditional format conditions on a cell is 3</li>
     * <li>Number of cell styles is 4000</li>
     * <li>Length of text cell contents is 32767</li>
     * </ul>
     */
    EXCEL97(0x10000, 0x0100, 30, 3, 4000, 32767),

    /**
     * Excel2007
     *
     * <ul>
     * <li>The total number of available rows is 1M (2^20)</li>
     * <li>The total number of available columns is 16K (2^14)</li>
     * <li>The maximum number of arguments to a function is 255</li>
     * <li>Number of conditional format conditions on a cell is unlimited
     * (actually limited by available memory in Excel)</li>
     * <li>Number of cell styles is 64000</li>
     * <li>Length of text cell contents is 32767</li>
     * <ul>
     */
    EXCEL2007(Integer.MAX_VALUE, Integer.MAX_VALUE, 255, Integer.MAX_VALUE, 64000, Integer.MAX_VALUE);

    private final int _maxRows;
    private final int _maxColumns;
    private final int _maxFunctionArgs;
    private final int _maxCondFormats;
    private final int _maxCellStyles;
    private final int _maxTextLength;

    private SpreadsheetVersion(int maxRows, int maxColumns, int maxFunctionArgs, int maxCondFormats, int maxCellStyles, int maxText) {
        _maxRows = maxRows;
        _maxColumns = maxColumns;
        _maxFunctionArgs = maxFunctionArgs;
        _maxCondFormats = maxCondFormats;
        _maxCellStyles = maxCellStyles;
        _maxTextLength = maxText;
    }

    /**
     * @return the maximum number of usable rows in each spreadsheet
     */
    public int getMaxRows() {
        return _maxRows;
    }

    /**
     * @return the last (maximum) valid row index, equals to <code> getMaxRows() - 1 </code>
     */
    public int getLastRowIndex() {
        return _maxRows - 1;
    }

    /**
     * @return the maximum number of usable columns in each spreadsheet
     */
    public int getMaxColumns() {
        return _maxColumns;
    }

    /**
     * @return the last (maximum) valid column index, equals to <code> getMaxColumns() - 1 </code>
     */
    public int getLastColumnIndex() {
        return _maxColumns - 1;
    }

    /**
     * @return the maximum number arguments that can be passed to a multi-arg function (e.g. COUNTIF)
     */
    public int getMaxFunctionArgs() {
        return _maxFunctionArgs;
    }

    /**
     * @return the maximum number of conditional format conditions on a cell
     */
    public int getMaxConditionalFormats() {
        return _maxCondFormats;
    }

    /**
     * @return the maximum number of cell styles per spreadsheet
     */
    public int getMaxCellStyles() {
        return _maxCellStyles;
    }

    /**
     *
     * @return the last valid column index in a ALPHA-26 representation
     *  (<code>IV</code> or <code>XFD</code>).
     */
    public String getLastColumnName() {
        return CellReference.convertNumToColString(getLastColumnIndex());
    }

    /**
     * @return the maximum length of a text cell
     */
    public int getMaxTextLength() {
        return _maxTextLength;
    }
}

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