lx-admin-backend/ruoyi-common/src/main/java/com/ruoyi/common/convert/ExcelDictConvert.java

package com.ruoyi.common.convert;

import cn.hutool.core.annotation.AnnotationUtil;
import cn.hutool.core.convert.Convert;
import com.alibaba.excel.converters.Converter;
import com.alibaba.excel.enums.CellDataTypeEnum;
import com.alibaba.excel.metadata.CellData;
import com.alibaba.excel.metadata.GlobalConfiguration;
import com.alibaba.excel.metadata.property.ExcelContentProperty;
import com.ruoyi.common.annotation.ExcelDictFormat;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.common.utils.poi.ExcelUtil;
import lombok.extern.slf4j.Slf4j;

import java.lang.reflect.Field;

/**
 * 字典格式化转换处理
 *
 * @author Lion Li
 */
@Slf4j
public class ExcelDictConvert implements Converter<Object> {

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

	@Override
	public CellDataTypeEnum supportExcelTypeKey() {
		return null;
	}

	@Override
	public Object convertToJavaData(CellData cellData, ExcelContentProperty contentProperty, GlobalConfiguration globalConfiguration) {
		ExcelDictFormat anno = getAnnotation(contentProperty.getField());
		String type = anno.dictType();
		String label = cellData.getStringValue();
		String value;
		if (StringUtils.isBlank(type)) {
			value = ExcelUtil.reverseByExp(label, anno.readConverterExp(), anno.separator());
		} else {
			value = ExcelUtil.reverseDictByExp(label, type, anno.separator());
		}
		return Convert.convert(contentProperty.getField().getType(), value);
	}

	@Override
	public CellData<String> convertToExcelData(Object object, ExcelContentProperty contentProperty, GlobalConfiguration globalConfiguration) {
		if (StringUtils.isNull(object)) {
			return new CellData<>("");
		}
		ExcelDictFormat anno = getAnnotation(contentProperty.getField());
		String type = anno.dictType();
		String value = Convert.toStr(object);
		String label;
		if (StringUtils.isBlank(type)) {
			label = ExcelUtil.convertByExp(value, anno.readConverterExp(), anno.separator());
		} else {
			label = ExcelUtil.convertDictByExp(value, type, anno.separator());
		}
		return new CellData<>(label);
	}

	private ExcelDictFormat getAnnotation(Field field) {
		return AnnotationUtil.getAnnotation(field, ExcelDictFormat.class);
	}
}