mirror of https://github.com/alibaba/easyexcel
zhuangjiaju
5 years ago
28 changed files with 377 additions and 160 deletions
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package com.alibaba.excel; |
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/** |
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* This is actually {@link EasyExcelFactory}, and it's nice to have a short name |
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* |
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* @author jipengfei |
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*/ |
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public class EasyExcel extends EasyExcelFactory {} |
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package com.alibaba.easyexcel.test.demo.read; |
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import com.alibaba.excel.annotation.ExcelProperty; |
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import com.alibaba.excel.annotation.format.DateTimeFormat; |
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import com.alibaba.excel.annotation.format.NumberFormat; |
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import lombok.Data; |
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/** |
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* 基础数据类.这里的排序和excel里面的排序一致 |
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* |
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* @author Jiaju Zhuang |
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**/ |
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@Data |
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public class ConverterData { |
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/** |
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* 我自定义 转换器，不管数据库传过来什么 。我给他加上“自定义：” |
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*/ |
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@ExcelProperty(converter = CustomStringStringConverter.class) |
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private String string; |
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/** |
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* 这里用string 去接日期才能格式化。我想接收年月日格式 |
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*/ |
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@DateTimeFormat("yyyy年MM月dd日HH时mm分ss秒") |
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private String date; |
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/** |
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* 我想接收百分比的数字 |
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*/ |
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@NumberFormat("#.##%") |
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private String doubleData; |
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} |
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package com.alibaba.easyexcel.test.demo.read; |
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import java.util.ArrayList; |
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import java.util.List; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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import com.alibaba.excel.context.AnalysisContext; |
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import com.alibaba.excel.event.AnalysisEventListener; |
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import com.alibaba.fastjson.JSON; |
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/** |
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* 模板的读取类 |
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* |
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* @author Jiaju Zhuang |
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*/ |
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public class ConverterDataListener extends AnalysisEventListener<ConverterData> { |
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private static final Logger LOGGER = LoggerFactory.getLogger(ConverterDataListener.class); |
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/** |
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* 每隔5条存储数据库，实际使用中可以3000条，然后清理list ，方便内存回收 |
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*/ |
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private static final int BATCH_COUNT = 5; |
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List<ConverterData> list = new ArrayList<ConverterData>(); |
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@Override |
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public void invoke(ConverterData data, AnalysisContext context) { |
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LOGGER.info("解析到一条数据:{}", JSON.toJSONString(data)); |
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list.add(data); |
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if (list.size() >= BATCH_COUNT) { |
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saveData(); |
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list.clear(); |
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} |
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} |
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@Override |
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public void doAfterAllAnalysed(AnalysisContext context) { |
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saveData(); |
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LOGGER.info("所有数据解析完成！"); |
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} |
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/** |
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* 加上存储数据库 |
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*/ |
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private void saveData() { |
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LOGGER.info("{}条数据，开始存储数据库！", list.size()); |
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LOGGER.info("存储数据库成功！"); |
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} |
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} |
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package com.alibaba.easyexcel.test.demo.read; |
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import com.alibaba.excel.converters.Converter; |
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import com.alibaba.excel.enums.CellDataTypeEnum; |
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import com.alibaba.excel.metadata.CellData; |
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import com.alibaba.excel.metadata.GlobalConfiguration; |
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import com.alibaba.excel.metadata.property.ExcelContentProperty; |
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/** |
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* String and string converter |
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* |
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* @author Jiaju Zhuang |
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*/ |
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public class CustomStringStringConverter implements Converter<String> { |
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@Override |
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public Class supportJavaTypeKey() { |
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return String.class; |
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} |
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@Override |
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public CellDataTypeEnum supportExcelTypeKey() { |
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return CellDataTypeEnum.STRING; |
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} |
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/** |
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* 这里读的时候会调用 |
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* |
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* @param cellData |
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* NotNull |
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* @param contentProperty |
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* Nullable |
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* @param globalConfiguration |
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* NotNull |
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* @return |
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*/ |
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@Override |
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public String convertToJavaData(CellData cellData, ExcelContentProperty contentProperty, |
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GlobalConfiguration globalConfiguration) { |
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return "自定义：" + cellData.getStringValue(); |
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} |
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/** |
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* 这里是写的时候会调用 不用管 |
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* |
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* @param value |
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* NotNull |
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* @param contentProperty |
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* Nullable |
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* @param globalConfiguration |
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* NotNull |
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* @return |
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*/ |
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@Override |
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public CellData convertToExcelData(String value, ExcelContentProperty contentProperty, |
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GlobalConfiguration globalConfiguration) { |
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return new CellData(value); |
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} |
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} |
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