maven
com.alibaba
easyexcel
2.2.7
model
import java.math.BigDecimal;
import java.util.Date;
import com.alibaba.excel.annotation.ExcelIgnore;
import com.alibaba.excel.annotation.ExcelProperty;
import com.alibaba.excel.annotation.write.style.ColumnWidth;
import com.fasterxml.jackson.annotation.JsonFormat;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data
@NoArgsConstructor
@AllArgsConstructor
public class StudentExcelDto {
@ExcelProperty(value = "序号",index = 0)
private Long id;
@ExcelProperty(value = "姓名",index = 1)
private String studentName;
@ExcelProperty(value = "班级",index = 2)
@ColumnWidth(20)
private String studentClass;
@ExcelProperty(value = "住址",index = 3)
private String address;
@ExcelProperty(value = "入学日期",index = 4)
@JsonFormat(pattern = "yyyy-MM-dd")
private Date admissionDate;
@ExcelProperty(value = "分数",index = 5)
private BigDecimal score;
@ExcelIgnore//导出忽略此字段
private int gender;
@ExcelProperty(value = "姓别",index = 6)
private String genderName;
}
Handler
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.Font;
import org.apache.poi.ss.usermodel.HorizontalAlignment;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.VerticalAlignment;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.util.CellRangeAddress;
import com.alibaba.excel.write.handler.SheetWriteHandler;
import com.alibaba.excel.write.metadata.holder.WriteSheetHolder;
import com.alibaba.excel.write.metadata.holder.WriteWorkbookHolder;
public class StudentHandler implements SheetWriteHandler {
@Override
public void beforeSheetCreate(WriteWorkbookHolder writeWorkbookHolder, WriteSheetHolder writeSheetHolder) {}
@Override
public void afterSheetCreate(WriteWorkbookHolder writeWorkbookHolder, WriteSheetHolder writeSheetHolder) {
Workbook workbook = writeWorkbookHolder.getWorkbook();
Sheet sheet = workbook.getSheetAt(0);
// Row row1 = sheet.createRow(0);
// row1.setHeight((short) 500);
// Cell cell = row1.createCell(0);
//
// //设置单元格内容
// cell.setCellValue("附件2");
// 设置标题
Row row2 = sheet.createRow(0);
row2.setHeight((short)800);
Cell cell1 = row2.createCell(0);
cell1.setCellValue("学生信息明细");
CellStyle cellStyle = workbook.createCellStyle();
cellStyle.setVerticalAlignment(VerticalAlignment.CENTER);
cellStyle.setAlignment(HorizontalAlignment.CENTER);
Font font = workbook.createFont();
font.setBold(true);
font.setFontHeight((short)400);
cellStyle.setFont(font);
cell1.setCellStyle(cellStyle);
sheet.addMergedRegionUnsafe(new CellRangeAddress(0, 0, 0, 6));
// 设置填表日期,填报人,联系方式
Row row3 = sheet.createRow(1);
row3.setHeight((short)500);
row3.createCell(0).setCellValue("学校（公章）：");
row3.createCell(3).setCellValue("联系电话");
}
}
Controller
import java.math.BigDecimal;
import java.net.URLEncoder;
import java.util.Date;
import java.util.List;
import javax.servlet.http.HttpServletResponse;
import org.apache.poi.ss.usermodel.BorderStyle;
import org.apache.poi.ss.usermodel.HorizontalAlignment;
import org.apache.poi.ss.usermodel.VerticalAlignment;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import com.alibaba.excel.EasyExcel;
import com.alibaba.excel.support.ExcelTypeEnum;
import com.alibaba.excel.write.metadata.style.WriteCellStyle;
import com.alibaba.excel.write.metadata.style.WriteFont;
import com.alibaba.excel.write.style.HorizontalCellStyleStrategy;
import com.gemantic.cnooc.handler.StudentHandler;
import com.gemantic.cnooc.model.StudentExcelDto;
import com.google.common.collect.Lists;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
@RestController
@RequestMapping(path = "/student")
@Slf4j
public class StudentExcelController {
@PostMapping(value = "exportExcel", headers = "Accept=application/octet-stream")
@ApiOperation(value = "导出excel", notes = "导出excel")
public void exportExcel(HttpServletResponse response) throws Exception {
List pageList = Lists.newArrayList();
StudentExcelDto a = new StudentExcelDto();
a.setId(1l);
a.setStudentName("小王");
a.setStudentClass("五年纪");
a.setAddress("北京小学");
a.setAdmissionDate(new Date());
a.setScore(new BigDecimal(100));
a.setGender(1);
pageList.add(a);
pageList.forEach(b -> {
if (a.getGender() == 1) {
a.setGenderName("男");
} else {
a.setGenderName("女");
}
});
response.setContentType("application/vnd.ms-excel");
response.setCharacterEncoding("utf-8");
// 这里URLEncoder.encode可以防止中文乱码 当然和easyexcel没有关系
String fileName = URLEncoder.encode("学生信息", "UTF-8");
response.setHeader("Content-disposition", "attachment;filename=" + fileName + ".xls");
// 内容样式策略
WriteCellStyle contentWriteCellStyle = new WriteCellStyle();
// 垂直居中,水平居中
contentWriteCellStyle.setVerticalAlignment(VerticalAlignment.CENTER);
contentWriteCellStyle.setHorizontalAlignment(HorizontalAlignment.CENTER);
contentWriteCellStyle.setBorderLeft(BorderStyle.THIN);
contentWriteCellStyle.setBorderTop(BorderStyle.THIN);
contentWriteCellStyle.setBorderRight(BorderStyle.THIN);
contentWriteCellStyle.setBorderBottom(BorderStyle.THIN);
// 设置 自动换行
contentWriteCellStyle.setWrapped(true);
// 字体策略
WriteFont contentWriteFont = new WriteFont();
// 字体大小
contentWriteFont.setFontHeightInPoints((short)12);
contentWriteCellStyle.setWriteFont(contentWriteFont);
// 头策略使用默认
WriteCellStyle headWriteCellStyle = new WriteCellStyle();
// excel如需下载到本地,只需要将response.getOutputStream()换成File即可(注释掉以上response代码)
try {
EasyExcel.write(response.getOutputStream(), StudentExcelDto.class)
// 设置输出excel版本,不设置默认为xlsx
.excelType(ExcelTypeEnum.XLS).head(StudentExcelDto.class)
// 设置拦截器或自定义样式
.registerWriteHandler(new StudentHandler())
.registerWriteHandler(new HorizontalCellStyleStrategy(headWriteCellStyle, contentWriteCellStyle))
.sheet("学生信息明细")
// 设置默认样式及写入头信息开始的行数
.useDefaultStyle(true).relativeHeadRowIndex(2)
// 这里的addsumColomn方法是个添加合计的方法,可删除
.doWrite(pageList);
} catch (Exception e) {
log.error("导出详情excel 出现错误", e);
}
}
}
导出结果
