/
DictConvert.java
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/
DictConvert.java
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package cn.iocoder.yudao.framework.excel.core.convert;
import cn.hutool.core.convert.Convert;
import cn.iocoder.yudao.framework.dict.core.DictFrameworkUtils;
import cn.iocoder.yudao.framework.excel.core.annotations.DictFormat;
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 lombok.extern.slf4j.Slf4j;
/**
* Excel 数据字典转换器
*
* @author 芋道源码
*/
@Slf4j
public class DictConvert implements Converter<Object> {
@Override
public Class<?> supportJavaTypeKey() {
throw new UnsupportedOperationException("暂不支持,也不需要");
}
@Override
public CellDataTypeEnum supportExcelTypeKey() {
throw new UnsupportedOperationException("暂不支持,也不需要");
}
@Override
public Object convertToJavaData(ReadCellData readCellData, ExcelContentProperty contentProperty,
GlobalConfiguration globalConfiguration) {
// 使用字典解析
String type = getType(contentProperty);
String label = readCellData.getStringValue();
String value = DictFrameworkUtils.parseDictDataValue(type, label);
if (value == null) {
log.error("[convertToJavaData][type({}) 解析不掉 label({})]", type, label);
return null;
}
// 将 String 的 value 转换成对应的属性
Class<?> fieldClazz = contentProperty.getField().getType();
return Convert.convert(fieldClazz, value);
}
@Override
public WriteCellData<String> convertToExcelData(Object object, ExcelContentProperty contentProperty,
GlobalConfiguration globalConfiguration) {
// 空时,返回空
if (object == null) {
return new WriteCellData<>("");
}
// 使用字典格式化
String type = getType(contentProperty);
String value = String.valueOf(object);
String label = DictFrameworkUtils.getDictDataLabel(type, value);
if (label == null) {
log.error("[convertToExcelData][type({}) 转换不了 label({})]", type, value);
return new WriteCellData<>("");
}
// 生成 Excel 小表格
return new WriteCellData<>(label);
}
private static String getType(ExcelContentProperty contentProperty) {
return contentProperty.getField().getAnnotation(DictFormat.class).value();
}
}