springboot easyexcel导入/导出excel自定义时间格式
在Spring Boot中使用EasyExcel导入和导出Excel时,可以自定义时间格式。以下是一个简单的例子,展示了如何在导入和导出时设置时间格式。
首先,添加EasyExcel的依赖到你的pom.xml
文件中:
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>easyexcel</artifactId>
<version>2.2.6</version>
</dependency>
导出时自定义时间格式:
import com.alibaba.excel.EasyExcel;
import com.alibaba.excel.write.metadata.WriteSheet;
import java.util.Date;
import java.util.List;
public class ExcelExportExample {
public static void exportExcel(List<DataModel> data, String fileName) {
WriteSheet writeSheet = EasyExcel.writerSheet("Sheet1").build();
// 自定义时间格式
String timeFormat = "yyyy-MM-dd HH:mm:ss";
EasyExcel.write(fileName, DataModel.class)
.registerWriteHandler(new SimpleDateFormatHandler(timeFormat))
.sheet("Sheet1")
.doWrite(data);
}
public static class DataModel {
@DateTimeFormat("yyyy-MM-dd HH:mm:ss")
private Date dateTime;
// getters and setters
}
}
导入时自定义时间格式:
import com.alibaba.excel.EasyExcel;
import com.alibaba.excel.read.listener.ReadListener;
import com.alibaba.excel.read.metadata.ReadSheet;
public class ExcelImportExample {
public static void importExcel(String fileName, ReadListener<DataModel> listener) {
ReadSheet readSheet = EasyExcel.readSheet("Sheet1").build();
// 自定义时间格式
String timeFormat = "yyyy-MM-dd HH:mm:ss";
EasyExcel.read(fileName, DataModel.class, listener)
.registerReadHandler(new SimpleDateFormatHandler(timeFormat))
.sheet(readSheet)
.doRead();
}
public static class DataModel {
@DateTimeFormat("yyyy-MM-dd HH:mm:ss")
private Date dateTime;
// getters and setters
}
}
SimpleDateFormatHandler
是一个自定义的处理器,需要你实现它来处理时间格式化:
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 java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
public class SimpleDateFormatHandler implements Converter<Date> {
private SimpleDateFormat simpleDateFor
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