前言
EasyExcel 批量导入并校验数据
一、pom
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>easyexcel</artifactId>
<version>2.2.7</version>
</dependency>
二、使用步骤
1.导入对象
日期形式的字段因为校验需要，提供了String类型的字段，再转换赋值给真正的数据库字段对象，如果不考虑校验问题可直接转换@ExcelProperty(value = "处罚信息公示日期", index = 5, converter = LocalDateConverter.class)
import com.alibaba.excel.annotation.ExcelIgnore;
import com.alibaba.excel.annotation.ExcelProperty;
import com.fasterxml.jackson.annotation.JsonFormat;
import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;
import org.hibernate.validator.constraints.Length;
import javax.validation.constraints.NotBlank;
import javax.validation.constraints.Pattern;
import java.io.Serializable;
import java.time.LocalDate;
/**
* 信用信息修复
*
* @author huaiyu.zhang
* @since 2023-04-19 10:59:49
*/
@Builder
@Data
@AllArgsConstructor
@NoArgsConstructor
@ApiModel("信用信息修复")
public class CreditInfoExcelInReq implements Serializable {
private static final long serialVersionUID = 370622351109421619L;
@ApiModelProperty("${column.comment}")
@ExcelIgnore
private String id;
@ApiModelProperty("企业名称")
@Length(max = 30, message = "企业名称：最多可输入30个字")
@NotBlank(message = "企业名称不能为空")
@ExcelProperty(index = 0, value = "企业名称")
private String companyName;
@ApiModelProperty("统一社会信用代码")
@Length(min = 18, max = 18, message = "统一社会信用代码必须18位")
@NotBlank(message = "统一社会信用代码不能为空")
@ExcelProperty(index = 1, value = "统一社会信用代码")
private String creditCode;
@ExcelProperty(index = 2, value = "行政区划--地市")
@NotBlank(message = "行政区划--地市不能为空")
private String districtCodeCity;
@ExcelProperty(index = 3, value = "行政区划--区/县")
private String districtCodeCountry;
@ApiModelProperty("行政区划")
@NotBlank(message = "行政区划不能为空")
@ExcelIgnore
private String districtCode;
@NotBlank(message = "失信行为类别不能为空")
@ExcelProperty(index = 4, value = "失信行为类别")
private String typeCodeName;
@ApiModelProperty("失信行为类别 0一般失信行为 1-严重失信行为")
@NotBlank(message = "失信行为类别不能为空")
@ExcelIgnore
private String typeCode;
@ExcelProperty(index = 5, value = "处罚信息公示日期")
@Pattern(regexp = "[0-9]{4}-[0-9]{2}-[0-9]{2}", message = "处罚信息公示日期格式必须为yyyy-MM-dd")
private String punishTimeOri;
@ApiModelProperty("处罚信息公示日期")
@JsonFormat(pattern = "yyyy-MM-dd", timezone = "GMT+8")
@ExcelIgnore
private LocalDate punishTime;
@ApiModelProperty("信用修复部门")
@Length(max = 20, message = "信用修复部门：最多可输入20个字")
@ExcelIgnore
private String repairDepartment;
@ApiModelProperty("信用修复完成日期")
@JsonFormat(pattern = "yyyy-MM-dd", timezone = "GMT+8")
@ExcelIgnore
private LocalDate repairTime;
@ApiModelProperty("状态 0-未修复 1-已修复")
@ExcelIgnore
private String status;
@ApiModelProperty("备注")
@Length(max = 300, message = "备注：最多300字")
@ExcelIgnore
private String mark;
}
2.读入数据并保存
读取数据后Validation校验，校验通过直接保存（如果数据已经存在，则copy excel外其他字段后删除原数据，导入新数据），校验失败则返回失败行数（这里也可以导出校验失败详情）
默认规则：设置excel最大导入数据行数为
LIST_COUNT = 1000;，
如果需要导入更多数据，改大这个值即可，也可invoke时分批读取数据
但是每次执行完invoke后都会执行doAfterAllAnalysed下的saveData，那么校验逻辑将只针对本批次数据进行校验，如校验失败，会直接返回给前端。后续批次由于异常被抛出不会执行（可更改校验逻辑，或错误信息返回形式）
Listener 端代码：
import com.alibaba.excel.context.AnalysisContext;
import com.alibaba.excel.event.AnalysisEventListener;
import com.alibaba.excel.exception.ExcelAnalysisException;
import com.gsafety.bg.sv.model.dto.req.CreditInfoExcelInReq;
import com.gsafety.bg.sv.model.dto.req.CreditInfoReq;
import com.gsafety.bg.sv.model.dto.resp.BasDistrictResp;
import com.gsafety.bg.sv.model.po.CreditInfoPO;
import com.gsafety.bg.sv.service.CreditInfoService;
import com.gsafety.bg.sv.service.constant.CreditTypeEnum;
import com.gsafety.bg.sv.service.utils.MappingConvertUtil;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.ObjectUtils;
import org.springframework.beans.BeanUtils;
import javax.validation.ConstraintViolation;
import javax.validation.Validation;
import java.time.LocalDate;
import java.util.*;
/**
* @author huaiyu.zhang
* @since 2023-6-5 0005 17:10
*/
@Slf4j
public class CreditInfoExcelDataListener extends AnalysisEventListener<CreditInfoExcelInReq> {
private final Integer LIST_COUNT = 1000;
List<CreditInfoExcelInReq> list = new ArrayList<>(LIST_COUNT);
// 由于监听器只能通过new的方式创建，所以可以通过构造器传入dao层对象
private final CreditInfoService service;
public CreditInfoExcelDataListener(CreditInfoService service) {
this.service = service;
}
@Override
public void invoke(CreditInfoExcelInReq req, AnalysisContext analysisContext) {
//每读取一行数据都会调用一次
list.add(req);
if (list.size() >= LIST_COUNT) {
throw new ExcelAnalysisException("当前excel数据量不得大于" + LIST_COUNT + "条！");
}
}
@Override
public void doAfterAllAnalysed(AnalysisContext analysisContext) {
//所有数据解析完毕执行该方法
// 防止导入空的Excel
if (analysisContext.readRowHolder().getRowIndex() <= 0) {
throw new ExcelAnalysisException("当前excel无数据!");
}
saveData();
}
protected void saveData() {
Set<String> errorRow = new HashSet<>();
List<BasDistrictResp> districtList = MappingConvertUtil.getDistrictList();
list.forEach(l -> {
Integer row = list.indexOf(l) + 2;
if (ObjectUtils.isEmpty(l.getDistrictCodeCountry())) {
Optional<BasDistrictResp> opt = districtList.stream().filter(d -> l.getDistrictCodeCity().equals(d.getDistName())).findFirst();
if (!opt.isPresent()) {
errorRow.add(row.toString());
} else {
l.setDistrictCode(opt.get().getDistCode());
}
} else {
String parentCode = districtList.stream().filter(d -> l.getDistrictCodeCity().equals(d.getDistName())).findFirst()
.orElse(BasDistrictResp.builder().distCode("").build()).getDistCode();
Optional<BasDistrictResp> opt = districtList.stream().filter(d -> parentCode.equals(d.getParentCode()) && l.getDistrictCodeCountry().equals(d.getDistName())).findFirst();
if (!opt.isPresent()) {
errorRow.add(row.toString());
} else {
l.setDistrictCode(opt.get().getDistCode());
}
}
l.setTypeCode(CreditTypeEnum.getCode(l.getTypeCodeName()));
Set<ConstraintViolation<Object>> validate = Validation.buildDefaultValidatorFactory().getValidator().validate(l);
//用于存储验证后的错误信息
if (validate.size() > 0) {
errorRow.add(row.toString());
//防止相同数据indexof定位错误
l.setId(UUID.randomUUID().toString());
} else {
//日期格式校验成功后再转换punishTimeOri，否则直接报错
l.setPunishTime(LocalDate.parse(l.getPunishTimeOri()));
CreditInfoReq req = new CreditInfoReq();
//构造新数据覆盖旧数据
BeanUtils.copyProperties(l, req);
Optional<CreditInfoPO> opt = service.loadByCreditCode(l.getCreditCode());
if (opt.isPresent()) {
req.setRepairTime(opt.get().getRepairTime());
req.setStatus(opt.get().getStatus());
req.setMark(opt.get().getMark());
req.setRepairDepartment(opt.get().getRepairDepartment());
//删除旧数据
service.delete(opt.get().getId());
}
l.setId(service.add(req));
}
if (row - 1 == list.size() && errorRow.size() > 0) {
throw new ExcelAnalysisException("部分导入成功，其中第" + String.join(",", errorRow) + "行导入失败！", null);
}
});
}
}
service 端代码：
public String importData(MultipartFile file) {
CreditInfoExcelDataListener listener = new CreditInfoExcelDataListener(this);
InputStream inputStream;
try {
inputStream = file.getInputStream();
EasyExcel.read(inputStream, CreditInfoExcelInReq.class,
listener).sheet().doRead();
return "全部导入成功！";
} catch (IOException e) {
throw new BusinessCheckException("Excel 文件流读取失败");
} catch (ExcelAnalysisException e) {
return e.getMessage();
} catch (Exception e) {
throw new BusinessException("数据导入失败", e);
}
}
文章来源：https://www.toymoban.com/news/detail-479936.html
文章来源地址https://www.toymoban.com/news/detail-479936.html
到了这里，关于EasyExcel 批量导入并校验数据的文章就介绍完了。如果您还想了解更多内容，请在右上角搜索TOY模板网以前的文章或继续浏览下面的相关文章，希望大家以后多多支持TOY模板网！
