easyExcel导入日期LocalDateTime等类型不匹配问题

发布于:2024-06-18 ⋅ 阅读:(22) ⋅ 点赞:(0)

"Convert data com.alibaba.excel.metadata.data.ReadCellData@ca896aaa to class java.time.LocalDateTime error ",

package com.csbaic.edatope.app.excel;

import com.alibaba.excel.converters.Converter;
import com.alibaba.excel.enums.CellDataTypeEnum;
import com.alibaba.excel.metadata.GlobalConfiguration;
import com.alibaba.excel.metadata.data.ReadCellData;
import com.alibaba.excel.metadata.data.WriteCellData;
import com.alibaba.excel.metadata.property.ExcelContentProperty;
import org.apache.poi.ss.usermodel.DateUtil;

import java.text.SimpleDateFormat;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.format.DateTimeFormatter;
import java.util.Date;

public class LocalDateTimeConverter implements Converter<LocalDateTime> {

    @Override
    public Class<LocalDateTime> supportJavaTypeKey() {
        return LocalDateTime.class;
    }

    @Override
    public CellDataTypeEnum supportExcelTypeKey() {
        return CellDataTypeEnum.STRING;
    }

    @Override
    public LocalDateTime convertToJavaData(ReadCellData<?> cellData, ExcelContentProperty contentProperty, GlobalConfiguration globalConfiguration) throws Exception {
        if (null == cellData) {
            return null;
        }
        LocalDateTime result = null;
        if (cellData.getType() == CellDataTypeEnum.NUMBER) {
            if (contentProperty == null || contentProperty.getDateTimeFormatProperty() == null) {
                Date date = DateUtil.getJavaDate(cellData.getNumberValue().doubleValue(),
                        globalConfiguration.getUse1904windowing(), null);
                result = date.toInstant().atZone(ZoneId.systemDefault()).toLocalDateTime();
            } else {
                Date date = DateUtil.getJavaDate(cellData.getNumberValue().doubleValue(),
                        contentProperty.getDateTimeFormatProperty().getUse1904windowing(), null);
                result = date.toInstant().atZone(ZoneId.systemDefault()).toLocalDateTime();
            }
        }
        if (cellData.getType() == CellDataTypeEnum.STRING) {
            String value = cellData.getStringValue();
            if (value.contains("-")) {
                try {
                    result = LocalDateTime.parse(value, DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));
                    /* result= LocalDateTime.parse(cellData.getStringValue());*/
                } catch (Exception e) {
                    e.printStackTrace();
                }
            } else if (value.contains("/")) {
                try {
                    result = LocalDateTime.parse(new SimpleDateFormat("yyyy/MM/dd HH:mm:ss").format(value));
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }
        return result;
    }

    @Override
    public WriteCellData<?> convertToExcelData(LocalDateTime value, ExcelContentProperty contentProperty,
                                               GlobalConfiguration globalConfiguration) {
        return new WriteCellData<>(value.format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")));
    }
}

  @ExcelProperty(value = "填表日期",converter = LocalDateTimeConverter.class)
    private LocalDateTime recordingDate;
  • @ExcelProperty(value = “填表日期”)的value字段需要与excel中表头文字一致

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