【easypoi 一对多导入解决方案】
easypoi 一对多导入解决方案
- 1.需求
- 2.复现问题
- 2.1校验时获取不到一对多中多的完整数据
- 2.2控制台报错 Cannot add merged region B5:B7 to sheet because it overlaps with an existing merged region (B3:B5).
- 3.如何解决
- 第二个问题处理： Cannot add merged region B5:B7 to sheet because it overlaps with an existing merged region (B3:B5).
- 第一个问题处理，校验时获取不到一对多中多的完整数据
- 3 完整环境
- 3.1 ImportController
- 3.2 MyExcelImportService
- 3.3 Maven 依赖
- 4.git 完整代码
1.需求
- 把如图的数据导入，
（1）校验姓名长度不能大于 100
（2）校验每一行次数 + 费用之和不能大于等于 10
（3）提示哪一行报错了 - 首先是一个一对多的导入，其次提示哪一行报错使用 ExcelImportUtil.importExcelMore().getFailWorkbook() 方法生成一个问题 excel 到服务器本地，再写一个下载失败文档的接口，让用户下载即可；
- 但是在在导入的时候报错，Cannot add merged region B5:B7 to sheet because it overlaps with an existing merged region (B3:B5).，且在校验
每一行次数 + 费用之和不能大于等于 10时只能获取第一行的数据。
2.复现问题
上代码
package com.example.myeasypoi;
import cn.afterturn.easypoi.excel.ExcelImportUtil;
import cn.afterturn.easypoi.excel.annotation.Excel;
import cn.afterturn.easypoi.excel.annotation.ExcelCollection;
import cn.afterturn.easypoi.excel.entity.ImportParams;
import cn.afterturn.easypoi.excel.entity.result.ExcelImportResult;
import cn.afterturn.easypoi.excel.entity.result.ExcelVerifyHandlerResult;
import cn.afterturn.easypoi.handler.inter.IExcelDataModel;
import cn.afterturn.easypoi.handler.inter.IExcelModel;
import cn.afterturn.easypoi.handler.inter.IExcelVerifyHandler;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import org.apache.commons.collections4.CollectionUtils;
import org.hibernate.validator.constraints.Length;
import org.springframework.web.bind.annotation.RestController;
import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.util.Date;
import java.util.List;
@RestController
public class ImportController {
public static void main(String[] args) throws Exception {
BufferedInputStream bis = new BufferedInputStream(new FileInputStream("D:/study/code_source/my-easypoi/src/main/resources/ExcelExportTemplateMyNestedLoop.xlsx"));
ImportParams importParams = new ImportParams();
importParams.setHeadRows(2);
importParams.setNeedVerify(true);
importParams.setVerifyHandler(new MyVerifyHandler());
ExcelImportResult<Object> result = ExcelImportUtil.importExcelMore(bis, MyPojo.class, importParams);
System.out.println(result);
}
@Data
public static class MyPojo extends Traffic implements IExcelDataModel, IExcelModel{
/**
* 行号
*/
private int rowNum;
/**
* 错误消息
*/
private String errorMsg;
@Override
public String getErrorMsg() {
return errorMsg;
}
@Override
public void setErrorMsg(String s) {
this.errorMsg =s;
}
@Override
public Integer getRowNum() {
return rowNum;
}
@Override
public void setRowNum(Integer rowNum) {
this.rowNum = rowNum;
}
}
public static class MyVerifyHandler implements IExcelVerifyHandler<MyPojo> {
@Override
public ExcelVerifyHandlerResult verifyHandler(MyPojo myPojo) {
StringBuilder sb = new StringBuilder();
List<TrafficDetail> shareBikes = myPojo.getShareBikes();
List<TrafficDetail> subways = myPojo.getSubways();
if (CollectionUtils.isNotEmpty(shareBikes)){
shareBikes.forEach(shareBike -> {
if(getSum(shareBike.getNumber(),shareBike.getCost())>=10){
sb.append("共享单车次数和费用之和大于 10");
}
});
}
if(CollectionUtils.isNotEmpty(subways)){
subways.forEach(subway -> {
if(getSum(subway.getNumber(),subway.getCost()) >=10){
sb.append("地铁次数和费用之和大于 10");
}
});
}
if(sb.length()!= 0){
return new ExcelVerifyHandlerResult(false,sb.toString());
}
return new ExcelVerifyHandlerResult(true);
}
private int getSum(Integer a ,Integer b){
return (a == null ? 0 : a) + (b == null ? 0 : b);
}
}
@Data
@AllArgsConstructor
@NoArgsConstructor
public static class Traffic{
@Excel(name = "序号")
private Integer id;
@Excel(name = "姓名")
@Length(max = 100,message = "姓名长度不能大于 100")
private String name;
@Excel(name = "日期",format = "yyyy-MM-dd")
private Date date;
@ExcelCollection(name = "共享单车")
private List<TrafficDetail> shareBikes;
@ExcelCollection(name = "地铁")
private List<TrafficDetail> subways;
}
@Data
@AllArgsConstructor
@NoArgsConstructor
public static class TrafficDetail{
@Excel(name = "次数")
private Integer number;
@Excel(name = "费用")
private Integer cost;
}
}
2.1校验时获取不到一对多中多的完整数据
2.2控制台报错 Cannot add merged region B5:B7 to sheet because it overlaps with an existing merged region (B3:B5).
easypoi 是先校验，再获取值，所以第二个报错在我放开第一个断点后出现。
3.如何解决
第二个问题处理： Cannot add merged region B5:B7 to sheet because it overlaps with an existing merged region (B3:B5).
首先 ImportExcelMore 实际调用的 new ExcelImportService().importExcelByIs(inputstream, pojoClass, params, true);查看代码逻辑，是因为ExcelImportService.removeSuperfluousRows 错误
如何改呢，上代码，就是继承 ExcelImportService 类，重写这部分代码，然后在调研时候直接用自己写的 类；
/**
* Copyright 2013-2015 JueYue (qrb.jueyue@gmail.com)
* <p>
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
* in compliance with the License. You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing, software distributed under the License
* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing permissions and limitations under
* the License.
*/
package com.example.myeasypoi;
import cn.afterturn.easypoi.excel.annotation.ExcelTarget;
import cn.afterturn.easypoi.excel.entity.ImportParams;
import cn.afterturn.easypoi.excel.entity.params.ExcelCollectionParams;
import cn.afterturn.easypoi.excel.entity.params.ExcelImportEntity;
import cn.afterturn.easypoi.excel.entity.result.ExcelImportResult;
import cn.afterturn.easypoi.excel.entity.result.ExcelVerifyHandlerResult;
import cn.afterturn.easypoi.entity.BaseTypeConstants;
import cn.afterturn.easypoi.excel.imports.CellValueService;
import cn.afterturn.easypoi.excel.imports.ExcelImportService;
import cn.afterturn.easypoi.excel.imports.base.ImportBaseService;
import cn.afterturn.easypoi.excel.imports.recursive.ExcelImportForkJoinWork;
import cn.afterturn.easypoi.exception.excel.ExcelImportException;
import cn.afterturn.easypoi.exception.excel.enums.ExcelImportEnum;
import cn.afterturn.easypoi.handler.inter.IExcelDataModel;
import cn.afterturn.easypoi.handler.inter.IExcelModel;
import cn.afterturn.easypoi.util.PoiCellUtil;
import cn.afterturn.easypoi.util.PoiPublicUtil;
import cn.afterturn.easypoi.util.PoiReflectorUtil;
import cn.afterturn.easypoi.util.PoiValidationUtil;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.builder.ReflectionToStringBuilder;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.formula.functions.T;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.util.IOUtils;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.*;
import java.lang.reflect.Field;
import java.util.*;
import java.util.concurrent.ForkJoinPool;
/**
* Excel 导入服务
*
* @author JueYue 2014年6月26日 下午9:20:51
*/
@SuppressWarnings({"rawtypes", "unchecked", "hiding"})
public class MyExcelImportService extends ExcelImportService {
private final static Logger LOGGER = LoggerFactory.getLogger(MyExcelImportService.class);
private CellValueService cellValueServer;
private boolean verifyFail = false;
/**
* 异常数据styler
*/
private CellStyle errorCellStyle;
private List<Row> successRow;
private List<Row> failRow;
private List failCollection;
public MyExcelImportService() {
successRow = new ArrayList<Row>();
failRow = new ArrayList<Row>();
failCollection = new ArrayList();
this.cellValueServer = new CellValueService();
}
/***
* 向List里面继续添加元素
*
* @param object
* @param param
* @param row
* @param titlemap
* @param targetId
* @param pictures
* @param params
*/
public void addListContinue(Object object, ExcelCollectionParams param, Row row,
Map<Integer, String> titlemap, String targetId,
Map<String, PictureData> pictures,
ImportParams params, StringBuilder errorMsg) throws Exception {
Collection collection = (Collection) PoiReflectorUtil.fromCache(object.getClass())
.getValue(object, param.getName());
Object entity = PoiPublicUtil.createObject(param.getType(), targetId);
if (entity instanceof IExcelDataModel) {
((IExcelDataModel) entity).setRowNum(row.getRowNum());
}
String picId;
// 是否需要加上这个对象
boolean isUsed = false;
for (int i = row.getFirstCellNum(); i < titlemap.size(); i++) {
Cell cell = row.getCell(i);
String titleString = (String) titlemap.get(i);
if (param.getExcelParams().containsKey(titleString)) {
if (param.getExcelParams().get(titleString).getType() == BaseTypeConstants.IMAGE_TYPE) {
picId = row.getRowNum() + "_" + i;
saveImage(entity, picId, param.getExcelParams(), titleString, pictures, params);
} else {
try {
saveFieldValue(params, entity, cell, param.getExcelParams(), titleString, row);
} catch (ExcelImportException e) {
// 如果需要去校验就忽略,这个错误,继续执行
if (params.isNeedVerify() && ExcelImportEnum.GET_VALUE_ERROR.equals(e.getType())) {
errorMsg.append(" ").append(titleString).append(ExcelImportEnum.GET_VALUE_ERROR.getMsg());
}
}
}
isUsed = true;
}
}
if (isUsed) {
collection.add(entity);
}
}
/**
* 获取key的值,针对不同类型获取不同的值
*
* @author JueYue 2013-11-21
*/
private String getKeyValue(Cell cell) {
Object obj = PoiCellUtil.getCellValue(cell);
return obj == null ? null : obj.toString().trim();
}
/**
* 获取保存的真实路径
*/
private String getSaveUrl(ExcelImportEntity excelImportEntity, Object object) throws Exception {
String url = "";
if (ExcelImportEntity.IMG_SAVE_PATH.equals(excelImportEntity.getSaveUrl())) {
if (excelImportEntity.getMethods() != null
&& excelImportEntity.getMethods().size() > 0) {
object = getFieldBySomeMethod(excelImportEntity.getMethods(), object);
}
url = object.getClass().getName()
.split("\\.")[object.getClass().getName().split("\\.").length - 1];
return excelImportEntity.getSaveUrl() + File.separator + url;
}
return excelImportEntity.getSaveUrl();
}
private <T> List<T> importExcel(Collection<T> result, Sheet sheet, Class<?> pojoClass,
ImportParams params,
Map<String, PictureData> pictures) throws Exception {
List collection = new ArrayList();
Map<String, ExcelImportEntity> excelParams = new HashMap<>();
List<ExcelCollectionParams> excelCollection = new ArrayList<>();
String targetId = null;
i18nHandler = params.getI18nHandler();
boolean isMap = Map.class.equals(pojoClass);
if (!isMap) {
Field[] fileds = PoiPublicUtil.getClassFields(pojoClass);
ExcelTarget etarget = pojoClass.getAnnotation(ExcelTarget.class);
if (etarget != null) {
targetId = etarget.value();
}
getAllExcelField(targetId, fileds, excelParams, excelCollection, pojoClass, null, null);
}
Iterator<Row> rows = sheet.rowIterator();
for (int j = 0; j < params.getTitleRows(); j++) {
rows.next();
}
Map<Integer, String> titlemap = getTitleMap(rows, params, excelCollection, excelParams);
checkIsValidTemplate(titlemap, excelParams, params, excelCollection);
Row row = null;
Object object = null;
String picId;
int readRow = 1;
//跳过无效行
for (int i = 0; i < params.getStartRows(); i++) {
rows.next();
}
//判断index 和集合,集合情况默认为第一列
if (excelCollection.size() > 0 && params.getKeyIndex() == null) {
params.setKeyIndex(0);
}
int endRow = sheet.getLastRowNum() - params.getLastOfInvalidRow();
if (params.getReadRows() > 0) {
endRow = Math.min(params.getReadRows(), endRow);
}
if (params.isConcurrentTask()) {
ForkJoinPool forkJoinPool = new ForkJoinPool();
ExcelImportForkJoinWork task = new ExcelImportForkJoinWork(params.getStartRows() + params.getHeadRows() + params.getTitleRows(), endRow, sheet, params, pojoClass, this, targetId, titlemap, excelParams);
ExcelImportResult forkJoinResult = forkJoinPool.invoke(task);
collection = forkJoinResult.getList();
failCollection = forkJoinResult.getFailList();
} else {
StringBuilder errorMsg;
while (rows.hasNext()) {
row = rows.next();
// Fix 如果row为无效行时候跳出
if (row.getRowNum() > endRow) {
break;
}
/* 如果当前行的单元格都是无效的，那就继续下一行 */
if (row.getLastCellNum()<0) {
continue;
}
if(isMap && object != null) {
((Map) object).put("excelRowNum", row.getRowNum());
}
errorMsg = new StringBuilder();
// 判断是集合元素还是不是集合元素,如果是就继续加入这个集合,不是就创建新的对象
// keyIndex 如果为空就不处理,仍然处理这一行
if (params.getKeyIndex() != null
&& (row.getCell(params.getKeyIndex()) == null
|| StringUtils.isEmpty(getKeyValue(row.getCell(params.getKeyIndex()))))
&& object != null) {
for (ExcelCollectionParams param : excelCollection) {
addListContinue(object, param, row, titlemap, targetId, pictures, params, errorMsg);
}
} else {
object = PoiPublicUtil.createObject(pojoClass, targetId);
try {
Set<Integer> keys = titlemap.keySet();
for (Integer cn : keys) {
Cell cell = row.getCell(cn);
String titleString = (String) titlemap.get(cn);
if (excelParams.containsKey(titleString) || isMap) {
if (excelParams.get(titleString) != null
&& excelParams.get(titleString).getType() == BaseTypeConstants.IMAGE_TYPE) {
picId = row.getRowNum() + "_" + cn;
saveImage(object, picId, excelParams, titleString, pictures,
params);
} else {
try {
saveFieldValue(params, object, cell, excelParams, titleString, row);
} catch (ExcelImportException e) {
// 如果需要去校验就忽略,这个错误,继续执行
if (params.isNeedVerify() && ExcelImportEnum.GET_VALUE_ERROR.equals(e.getType())) {
errorMsg.append(" ").append(titleString).append(ExcelImportEnum.GET_VALUE_ERROR.getMsg());
}
}
}
}
}
//for (int i = row.getFirstCellNum(), le = titlemap.size(); i < le; i++) {
//}
if (object instanceof IExcelDataModel) {
((IExcelDataModel) object).setRowNum(row.getRowNum());
}
for (ExcelCollectionParams param : excelCollection) {
addListContinue(object, param, row, titlemap, targetId, pictures, params, errorMsg);
}
if (verifyingDataValidity(object, row, params, isMap, errorMsg)) {
collection.add(object);
} else {
failCollection.add(object);
}
} catch (ExcelImportException e) {
LOGGER.error("excel import error , row num:{},obj:{}", readRow, ReflectionToStringBuilder.toString(object));
if (!e.getType().equals(ExcelImportEnum.VERIFY_ERROR)) {
throw new ExcelImportException(e.getType(), e);
}
} catch (Exception e) {
LOGGER.error("excel import error , row num:{},obj:{}", readRow, ReflectionToStringBuilder.toString(object));
throw new RuntimeException(e);
}
}
readRow++;
}
}
return collection;
}
/**
* 校验数据合法性
*/
public boolean verifyingDataValidity(Object object, Row row, ImportParams params,
boolean isMap, StringBuilder fieldErrorMsg) {
boolean isAdd = true;
Cell cell = null;
if (params.isNeedVerify()) {
String errorMsg = PoiValidationUtil.validation(object, params.getVerifyGroup());
if (StringUtils.isNotEmpty(errorMsg)) {
cell = row.createCell(row.getLastCellNum());
cell.setCellValue(errorMsg);
if (object instanceof IExcelModel) {
IExcelModel model = (IExcelModel) object;
model.setErrorMsg(errorMsg);
}
isAdd = false;
verifyFail = true;
}
}
if (params.getVerifyHandler() != null) {
ExcelVerifyHandlerResult result = params.getVerifyHandler().verifyHandler(object);
if (!result.isSuccess()) {
if (cell == null) {
cell = row.createCell(row.getLastCellNum());
}
cell.setCellValue((StringUtils.isNoneBlank(cell.getStringCellValue())
? cell.getStringCellValue() + "," : "") + result.getMsg());
if (object instanceof IExcelModel) {
IExcelModel model = (IExcelModel) object;
model.setErrorMsg((StringUtils.isNoneBlank(model.getErrorMsg())
? model.getErrorMsg() + "," : "") + result.getMsg());
}
isAdd = false;
verifyFail = true;
}
}
if ((params.isNeedVerify() || params.getVerifyHandler() != null) && fieldErrorMsg.length() > 0) {
if (object instanceof IExcelModel) {
IExcelModel model = (IExcelModel) object;
model.setErrorMsg((StringUtils.isNoneBlank(model.getErrorMsg())
? model.getErrorMsg() + "," : "") + fieldErrorMsg.toString());
}
if (cell == null) {
cell = row.createCell(row.getLastCellNum());
}
cell.setCellValue((StringUtils.isNoneBlank(cell.getStringCellValue())
? cell.getStringCellValue() + "," : "") + fieldErrorMsg.toString());
isAdd = false;
verifyFail = true;
}
if (cell != null) {
cell.setCellStyle(errorCellStyle);
failRow.add(row);
if(isMap) {
((Map) object).put("excelErrorMsg", cell.getStringCellValue());
}
} else {
successRow.add(row);
}
return isAdd;
}
/**
* 获取表格字段列名对应信息
*/
private Map<Integer, String> getTitleMap(Iterator<Row> rows, ImportParams params,
List<ExcelCollectionParams> excelCollection,
Map<String, ExcelImportEntity> excelParams) {
Map<Integer, String> titlemap = new LinkedHashMap<Integer, String>();
Iterator<Cell> cellTitle;
String collectionName = null;
ExcelCollectionParams collectionParams = null;
Row row = null;
for (int j = 0; j < params.getHeadRows(); j++) {
row = rows.next();
if (row == null) {
continue;
}
cellTitle = row.cellIterator();
while (cellTitle.hasNext()) {
Cell cell = cellTitle.next();
String value = getKeyValue(cell);
value = value.replace("\n", "");
int i = cell.getColumnIndex();
//用以支持重名导入
if (StringUtils.isNotEmpty(value)) {
if (titlemap.containsKey(i)) {
collectionName = titlemap.get(i);
collectionParams = getCollectionParams(excelCollection, collectionName);
titlemap.put(i, collectionName + "_" + value);
} else if (StringUtils.isNotEmpty(collectionName) && collectionParams != null
&& collectionParams.getExcelParams()
.containsKey(collectionName + "_" + value)) {
titlemap.put(i, collectionName + "_" + value);
} else {
collectionName = null;
collectionParams = null;
}
if (StringUtils.isEmpty(collectionName)) {
titlemap.put(i, value);
}
}
}
}
// 处理指定列的情况
Set<String> keys = excelParams.keySet();
for (String key : keys) {
if (key.startsWith("FIXED_")) {
String[] arr = key.split("_");
titlemap.put(Integer.parseInt(arr[1]), key);
}
}
return titlemap;
}
/**
* 获取这个名称对应的集合信息
*/
private ExcelCollectionParams getCollectionParams(List<ExcelCollectionParams> excelCollection,
String collectionName) {
for (ExcelCollectionParams excelCollectionParams : excelCollection) {
if (collectionName.equals(excelCollectionParams.getExcelName())) {
return excelCollectionParams;
}
}
return null;
}
/**
* Excel 导入 field 字段类型 Integer,Long,Double,Date,String,Boolean
*/
public ExcelImportResult importExcelByIs(InputStream inputstream, Class<?> pojoClass,
ImportParams params, boolean needMore) throws Exception {
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("Excel import start ,class is {}", pojoClass);
}
List<T> result = new ArrayList<T>();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ExcelImportResult importResult;
try {
byte[] buffer = new byte[1024];
int len;
while ((len = inputstream.read(buffer)) > -1) {
baos.write(buffer, 0, len);
}
baos.flush();
InputStream userIs = new ByteArrayInputStream(baos.toByteArray());
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("Excel clone success");
}
Workbook book = WorkbookFactory.create(userIs);
boolean isXSSFWorkbook = !(book instanceof HSSFWorkbook);
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("Workbook create success");
}
importResult = new ExcelImportResult();
createErrorCellStyle(book);
Map<String, PictureData> pictures;
for (int i = params.getStartSheetIndex(); i < params.getStartSheetIndex()
+ params.getSheetNum(); i++) {
if (LOGGER.isDebugEnabled()) {
LOGGER.debug(" start to read excel by is ,startTime is {}", new Date());
}
if (isXSSFWorkbook) {
pictures = PoiPublicUtil.getSheetPictrues07((XSSFSheet) book.getSheetAt(i),
(XSSFWorkbook) book);
} else {
pictures = PoiPublicUtil.getSheetPictrues03((HSSFSheet) book.getSheetAt(i),
(HSSFWorkbook) book);
}
if (LOGGER.isDebugEnabled()) {
LOGGER.debug(" end to read excel by is ,endTime is {}", new Date());
}
result.addAll(importExcel(result, book.getSheetAt(i), pojoClass, params, pictures));
if (LOGGER.isDebugEnabled()) {
LOGGER.debug(" end to read excel list by sheet ,endTime is {}", new Date());
}
if (params.isReadSingleCell()) {
readSingleCell(importResult, book.getSheetAt(i), params);
if (LOGGER.isDebugEnabled()) {
LOGGER.debug(" read Key-Value ,endTime is {}", System.currentTimeMillis());
}
}
}
if (params.isNeedSave()) {
saveThisExcel(params, pojoClass, isXSSFWorkbook, book);
}
importResult.setList(result);
if (needMore) {
InputStream successIs = new ByteArrayInputStream(baos.toByteArray());
try {
Workbook successBook = WorkbookFactory.create(successIs);
if (params.isVerifyFileSplit()){
importResult.setWorkbook(removeSuperfluousRows(successBook, failRow, params));
importResult.setFailWorkbook(removeSuperfluousRows(book, successRow, params));
} else {
importResult.setWorkbook(book);
}
importResult.setFailList(failCollection);
importResult.setVerifyFail(verifyFail);
} finally {
successIs.close();
}
}
} finally {
IOUtils.closeQuietly(baos);
}
return importResult;
}
private Workbook removeSuperfluousRows(Workbook book, List<Row> rowList, ImportParams params) {
for (int i = params.getStartSheetIndex(); i < params.getStartSheetIndex()
+ params.getSheetNum(); i++) {
for (int j = rowList.size() - 1; j >= 0; j--) {
if (rowList.get(j).getRowNum() < rowList.get(j).getSheet().getLastRowNum()) {
book.getSheetAt(i).shiftRows(rowList.get(j).getRowNum() + 1, rowList.get(j).getSheet().getLastRowNum(), 1);
} else if (rowList.get(j).getRowNum() == rowList.get(j).getSheet().getLastRowNum()) {
book.getSheetAt(i).createRow(rowList.get(j).getRowNum() + 1);
book.getSheetAt(i).shiftRows(rowList.get(j).getRowNum() + 1, rowList.get(j).getSheet().getLastRowNum() + 1, 1);
}
}
}
return book;
}
/**
* 按照键值对的方式取得Excel里面的数据
*/
private void readSingleCell(ExcelImportResult result, Sheet sheet, ImportParams params) {
if (result.getMap() == null) {
result.setMap(new HashMap<String, Object>());
}
for (int i = 0; i < params.getTitleRows() + params.getHeadRows() + params.getStartRows(); i++) {
getSingleCellValueForRow(result, sheet.getRow(i), params);
}
for (int i = sheet.getLastRowNum() - params.getLastOfInvalidRow(); i < sheet.getLastRowNum(); i++) {
getSingleCellValueForRow(result, sheet.getRow(i), params);
}
}
private void getSingleCellValueForRow(ExcelImportResult result, Row row, ImportParams params) {
for (int j = row.getFirstCellNum(), le = row.getLastCellNum(); j < le; j++) {
String text = PoiCellUtil.getCellValue(row.getCell(j));
if (StringUtils.isNoneBlank(text) && text.endsWith(params.getKeyMark())) {
if (result.getMap().containsKey(text)) {
if (result.getMap().get(text) instanceof String) {
List<String> list = new ArrayList<String>();
list.add((String) result.getMap().get(text));
result.getMap().put(text, list);
}
((List) result.getMap().get(text)).add(PoiCellUtil.getCellValue(row.getCell(++j)));
} else {
result.getMap().put(text, PoiCellUtil.getCellValue(row.getCell(++j)));
}
}
}
}
/**
* 检查是不是合法的模板
*/
private void checkIsValidTemplate(Map<Integer, String> titlemap,
Map<String, ExcelImportEntity> excelParams,
ImportParams params,
List<ExcelCollectionParams> excelCollection) {
if (params.getImportFields() != null) {
// 同时校验列顺序
if (params.isNeedCheckOrder()) {
if (params.getImportFields().length != titlemap.size()) {
LOGGER.error("excel列顺序不一致");
throw new ExcelImportException(ExcelImportEnum.IS_NOT_A_VALID_TEMPLATE);
}
int i = 0;
for (String title : titlemap.values()) {
if (!StringUtils.equals(title, params.getImportFields()[i++])) {
LOGGER.error("excel列顺序不一致");
throw new ExcelImportException(ExcelImportEnum.IS_NOT_A_VALID_TEMPLATE);
}
}
} else {
for (int i = 0, le = params.getImportFields().length; i < le; i++) {
if (!titlemap.containsValue(params.getImportFields()[i])) {
throw new ExcelImportException(ExcelImportEnum.IS_NOT_A_VALID_TEMPLATE);
}
}
}
} else {
Collection<ExcelImportEntity> collection = excelParams.values();
for (ExcelImportEntity excelImportEntity : collection) {
if (excelImportEntity.isImportField()
&& !titlemap.containsValue(excelImportEntity.getName())) {
LOGGER.error(excelImportEntity.getName() + "必须有,但是没找到");
throw new ExcelImportException(ExcelImportEnum.IS_NOT_A_VALID_TEMPLATE);
}
}
for (int i = 0, le = excelCollection.size(); i < le; i++) {
ExcelCollectionParams collectionparams = excelCollection.get(i);
collection = collectionparams.getExcelParams().values();
for (ExcelImportEntity excelImportEntity : collection) {
if (excelImportEntity.isImportField() && !titlemap.containsValue(
collectionparams.getExcelName() + "_" + excelImportEntity.getName())) {
throw new ExcelImportException(ExcelImportEnum.IS_NOT_A_VALID_TEMPLATE);
}
}
}
}
}
/**
* 保存字段值(获取值,校验值,追加错误信息)
*/
public void saveFieldValue(ImportParams params, Object object, Cell cell,
Map<String, ExcelImportEntity> excelParams, String titleString,
Row row) throws Exception {
Object value = cellValueServer.getValue(params.getDataHandler(), object, cell, excelParams,
titleString, params.getDictHandler());
if (object instanceof Map) {
if (params.getDataHandler() != null) {
params.getDataHandler().setMapValue((Map) object, titleString, value);
} else {
((Map) object).put(titleString, value);
}
} else {
setValues(excelParams.get(titleString), object, value);
}
}
/**
* @param object
* @param picId
* @param excelParams
* @param titleString
* @param pictures
* @param params
* @throws Exception
*/
private void saveImage(Object object, String picId, Map<String, ExcelImportEntity> excelParams,
String titleString, Map<String, PictureData> pictures,
ImportParams params) throws Exception {
if (pictures == null) {
return;
}
PictureData image = pictures.get(picId);
if (image == null) {
return;
}
byte[] data = image.getData();
String fileName = "pic" + Math.round(Math.random() * 100000000000L);
fileName += "." + PoiPublicUtil.getFileExtendName(data);
if (excelParams.get(titleString).getSaveType() == 1) {
String path = getSaveUrl(excelParams.get(titleString), object);
File savefile = new File(path);
if (!savefile.exists()) {
savefile.mkdirs();
}
savefile = new File(path + File.separator + fileName);
FileOutputStream fos = new FileOutputStream(savefile);
try {
fos.write(data);
} finally {
IOUtils.closeQuietly(fos);
}
setValues(excelParams.get(titleString), object,
getSaveUrl(excelParams.get(titleString), object) + File.separator + fileName);
} else {
setValues(excelParams.get(titleString), object, data);
}
}
private void createErrorCellStyle(Workbook workbook) {
errorCellStyle = workbook.createCellStyle();
Font font = workbook.createFont();
font.setColor(Font.COLOR_RED);
errorCellStyle.setFont(font);
}
}
第一个问题处理，校验时获取不到一对多中多的完整数据
- 当我把 第二个问题处理后，第一个问题在校验的时候还是只能获取一对多的第一个，实在没找到源码，也不想找了，就用一个笨方法处理了，就是把读入的流分成两份，一份用 ExcelImportUtil.importExcel() 不校验获取所有数据，一份用 ExcelImportUtil.importExcelMore() 处理，在设置校验类时，用构造方法的方式放入 ExcelImportUtil.importExcel() 的返回值到校验类中。
- 这样技能够校验了，也能过获取完整的数据了。
3 完整环境
3.1 ImportController
package com.example.myeasypoi;
import cn.afterturn.easypoi.excel.ExcelImportUtil;
import cn.afterturn.easypoi.excel.annotation.Excel;
import cn.afterturn.easypoi.excel.annotation.ExcelCollection;
import cn.afterturn.easypoi.excel.entity.ImportParams;
import cn.afterturn.easypoi.excel.entity.result.ExcelImportResult;
import cn.afterturn.easypoi.excel.entity.result.ExcelVerifyHandlerResult;
import cn.afterturn.easypoi.handler.inter.IExcelDataModel;
import cn.afterturn.easypoi.handler.inter.IExcelModel;
import cn.afterturn.easypoi.handler.inter.IExcelVerifyHandler;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import org.apache.commons.collections4.CollectionUtils;
import org.apache.commons.lang3.StringUtils;
import org.hibernate.validator.constraints.Length;
import org.springframework.web.bind.annotation.RestController;
import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Collectors;
@RestController
public class ImportController {
public static void main(String[] args) throws Exception {
BufferedInputStream bis1 = new BufferedInputStream(new FileInputStream("D:/study/code_source/my-easypoi/src/main/resources/ExcelExportTemplateMyNestedLoop.xlsx"));
BufferedInputStream bis2 = new BufferedInputStream(new FileInputStream("D:/study/code_source/my-easypoi/src/main/resources/ExcelExportTemplateMyNestedLoop.xlsx"));
//第一份文件,不校验
ImportParams importParams1 = new ImportParams();
importParams1.setHeadRows(2);
List<MyPojo> firstMyPojoList = ExcelImportUtil.importExcel(bis1, MyPojo.class, importParams1);
Map<Integer, MyPojo> idMyPojoMap = firstMyPojoList.stream().collect(Collectors.toMap(MyPojo::getId, e -> e));
ImportParams importParams2 = new ImportParams();
importParams2.setHeadRows(2);
importParams2.setNeedVerify(true);
importParams2.setVerifyHandler(new MyVerifyHandler(idMyPojoMap));
// ExcelImportResult<Object> result = ExcelImportUtil.importExcelMore(bis, MyPojo.class, importParams);
ExcelImportResult<MyPojo> result = new MyExcelImportService().importExcelByIs(bis2, MyPojo.class, importParams2,true);
List<MyPojo> failList = result.getFailList();
System.out.println(failList);
}
@Data
public static class MyPojo extends Traffic implements IExcelDataModel, IExcelModel{
/**
* 行号
*/
private int rowNum;
/**
* 错误消息
*/
private String errorMsg;
@Override
public String getErrorMsg() {
return errorMsg;
}
@Override
public void setErrorMsg(String s) {
this.errorMsg =s;
}
@Override
public Integer getRowNum() {
return rowNum;
}
@Override
public void setRowNum(Integer rowNum) {
this.rowNum = rowNum;
}
}
public static class MyVerifyHandler implements IExcelVerifyHandler<MyPojo> {
Map<Integer,MyPojo> idMyPojoMap;
public MyVerifyHandler(Map<Integer, MyPojo> idMyPojoMap) {
this.idMyPojoMap = idMyPojoMap;
}
@Override
public ExcelVerifyHandlerResult verifyHandler(MyPojo myPojo) {
myPojo = idMyPojoMap.get(myPojo.getId());
StringBuilder sb = new StringBuilder();
//校验
String name = myPojo.getName();
if(StringUtils.isNotEmpty(name) && name.length() > 100){
sb.append("姓名长度不能超过 100");
}
List<TrafficDetail> shareBikes = myPojo.getShareBikes();
List<TrafficDetail> subways = myPojo.getSubways();
if (CollectionUtils.isNotEmpty(shareBikes)){
shareBikes.forEach(shareBike -> {
if(getSum(shareBike.getNumber(),shareBike.getCost())>=10){
sb.append("共享单车次数和费用之和大于 10");
}
});
}
if(CollectionUtils.isNotEmpty(subways)){
subways.forEach(subway -> {
if(getSum(subway.getNumber(),subway.getCost()) >=10){
sb.append("地铁次数和费用之和大于 10");
}
});
}
ExcelVerifyHandlerResult excelVerifyHandlerResult;
if(sb.length()!= 0){
excelVerifyHandlerResult= new ExcelVerifyHandlerResult(false,sb.toString());
}else {
excelVerifyHandlerResult= new ExcelVerifyHandlerResult(true);
}
return excelVerifyHandlerResult;
}
private int getSum(Integer a ,Integer b){
return (a == null ? 0 : a) + (b == null ? 0 : b);
}
}
@Data
@AllArgsConstructor
@NoArgsConstructor
public static class Traffic{
@Excel(name = "序号")
private Integer id;
@Excel(name = "姓名")
@Length(max = 100,message = "姓名长度不能大于 100")
private String name;
@Excel(name = "日期",format = "yyyy-MM-dd")
private Date date;
@ExcelCollection(name = "共享单车")
private List<TrafficDetail> shareBikes;
@ExcelCollection(name = "地铁")
private List<TrafficDetail> subways;
}
@Data
@AllArgsConstructor
@NoArgsConstructor
public static class TrafficDetail{
@Excel(name = "次数")
private Integer number;
@Excel(name = "费用")
private Integer cost;
}
}
3.2 MyExcelImportService
/**
* Copyright 2013-2015 JueYue (qrb.jueyue@gmail.com)
* <p>
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
* in compliance with the License. You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing, software distributed under the License
* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing permissions and limitations under
* the License.
*/
package com.example.myeasypoi;
import cn.afterturn.easypoi.excel.annotation.ExcelTarget;
import cn.afterturn.easypoi.excel.entity.ImportParams;
import cn.afterturn.easypoi.excel.entity.params.ExcelCollectionParams;
import cn.afterturn.easypoi.excel.entity.params.ExcelImportEntity;
import cn.afterturn.easypoi.excel.entity.result.ExcelImportResult;
import cn.afterturn.easypoi.excel.entity.result.ExcelVerifyHandlerResult;
import cn.afterturn.easypoi.entity.BaseTypeConstants;
import cn.afterturn.easypoi.excel.imports.CellValueService;
import cn.afterturn.easypoi.excel.imports.ExcelImportService;
import cn.afterturn.easypoi.excel.imports.base.ImportBaseService;
import cn.afterturn.easypoi.excel.imports.recursive.ExcelImportForkJoinWork;
import cn.afterturn.easypoi.exception.excel.ExcelImportException;
import cn.afterturn.easypoi.exception.excel.enums.ExcelImportEnum;
import cn.afterturn.easypoi.handler.inter.IExcelDataModel;
import cn.afterturn.easypoi.handler.inter.IExcelModel;
import cn.afterturn.easypoi.util.PoiCellUtil;
import cn.afterturn.easypoi.util.PoiPublicUtil;
import cn.afterturn.easypoi.util.PoiReflectorUtil;
import cn.afterturn.easypoi.util.PoiValidationUtil;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.builder.ReflectionToStringBuilder;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.formula.functions.T;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.util.IOUtils;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.*;
import java.lang.reflect.Field;
import java.util.*;
import java.util.concurrent.ForkJoinPool;
/**
* Excel 导入服务
*
* @author JueYue 2014年6月26日 下午9:20:51
*/
@SuppressWarnings({"rawtypes", "unchecked", "hiding"})
public class MyExcelImportService extends ExcelImportService {
private final static Logger LOGGER = LoggerFactory.getLogger(MyExcelImportService.class);
private CellValueService cellValueServer;
private boolean verifyFail = false;
/**
* 异常数据styler
*/
private CellStyle errorCellStyle;
private List<Row> successRow;
private List<Row> failRow;
private List failCollection;
public MyExcelImportService() {
successRow = new ArrayList<Row>();
failRow = new ArrayList<Row>();
failCollection = new ArrayList();
this.cellValueServer = new CellValueService();
}
/***
* 向List里面继续添加元素
*
* @param object
* @param param
* @param row
* @param titlemap
* @param targetId
* @param pictures
* @param params
*/
public void addListContinue(Object object, ExcelCollectionParams param, Row row,
Map<Integer, String> titlemap, String targetId,
Map<String, PictureData> pictures,
ImportParams params, StringBuilder errorMsg) throws Exception {
Collection collection = (Collection) PoiReflectorUtil.fromCache(object.getClass())
.getValue(object, param.getName());
Object entity = PoiPublicUtil.createObject(param.getType(), targetId);
if (entity instanceof IExcelDataModel) {
((IExcelDataModel) entity).setRowNum(row.getRowNum());
}
String picId;
// 是否需要加上这个对象
boolean isUsed = false;
for (int i = row.getFirstCellNum(); i < titlemap.size(); i++) {
Cell cell = row.getCell(i);
String titleString = (String) titlemap.get(i);
if (param.getExcelParams().containsKey(titleString)) {
if (param.getExcelParams().get(titleString).getType() == BaseTypeConstants.IMAGE_TYPE) {
picId = row.getRowNum() + "_" + i;
saveImage(entity, picId, param.getExcelParams(), titleString, pictures, params);
} else {
try {
saveFieldValue(params, entity, cell, param.getExcelParams(), titleString, row);
} catch (ExcelImportException e) {
// 如果需要去校验就忽略,这个错误,继续执行
if (params.isNeedVerify() && ExcelImportEnum.GET_VALUE_ERROR.equals(e.getType())) {
errorMsg.append(" ").append(titleString).append(ExcelImportEnum.GET_VALUE_ERROR.getMsg());
}
}
}
isUsed = true;
}
}
if (isUsed) {
collection.add(entity);
}
}
/**
* 获取key的值,针对不同类型获取不同的值
*
* @author JueYue 2013-11-21
*/
private String getKeyValue(Cell cell) {
Object obj = PoiCellUtil.getCellValue(cell);
return obj == null ? null : obj.toString().trim();
}
/**
* 获取保存的真实路径
*/
private String getSaveUrl(ExcelImportEntity excelImportEntity, Object object) throws Exception {
String url = "";
if (ExcelImportEntity.IMG_SAVE_PATH.equals(excelImportEntity.getSaveUrl())) {
if (excelImportEntity.getMethods() != null
&& excelImportEntity.getMethods().size() > 0) {
object = getFieldBySomeMethod(excelImportEntity.getMethods(), object);
}
url = object.getClass().getName()
.split("\\.")[object.getClass().getName().split("\\.").length - 1];
return excelImportEntity.getSaveUrl() + File.separator + url;
}
return excelImportEntity.getSaveUrl();
}
private <T> List<T> importExcel(Collection<T> result, Sheet sheet, Class<?> pojoClass,
ImportParams params,
Map<String, PictureData> pictures) throws Exception {
List collection = new ArrayList();
Map<String, ExcelImportEntity> excelParams = new HashMap<>();
List<ExcelCollectionParams> excelCollection = new ArrayList<>();
String targetId = null;
i18nHandler = params.getI18nHandler();
boolean isMap = Map.class.equals(pojoClass);
if (!isMap) {
Field[] fileds = PoiPublicUtil.getClassFields(pojoClass);
ExcelTarget etarget = pojoClass.getAnnotation(ExcelTarget.class);
if (etarget != null) {
targetId = etarget.value();
}
getAllExcelField(targetId, fileds, excelParams, excelCollection, pojoClass, null, null);
}
Iterator<Row> rows = sheet.rowIterator();
for (int j = 0; j < params.getTitleRows(); j++) {
rows.next();
}
Map<Integer, String> titlemap = getTitleMap(rows, params, excelCollection, excelParams);
checkIsValidTemplate(titlemap, excelParams, params, excelCollection);
Row row = null;
Object object = null;
String picId;
int readRow = 1;
//跳过无效行
for (int i = 0; i < params.getStartRows(); i++) {
rows.next();
}
//判断index 和集合,集合情况默认为第一列
if (excelCollection.size() > 0 && params.getKeyIndex() == null) {
params.setKeyIndex(0);
}
int endRow = sheet.getLastRowNum() - params.getLastOfInvalidRow();
if (params.getReadRows() > 0) {
endRow = Math.min(params.getReadRows(), endRow);
}
if (params.isConcurrentTask()) {
ForkJoinPool forkJoinPool = new ForkJoinPool();
ExcelImportForkJoinWork task = new ExcelImportForkJoinWork(params.getStartRows() + params.getHeadRows() + params.getTitleRows(), endRow, sheet, params, pojoClass, this, targetId, titlemap, excelParams);
ExcelImportResult forkJoinResult = forkJoinPool.invoke(task);
collection = forkJoinResult.getList();
failCollection = forkJoinResult.getFailList();
} else {
StringBuilder errorMsg;
while (rows.hasNext()) {
row = rows.next();
// Fix 如果row为无效行时候跳出
if (row.getRowNum() > endRow) {
break;
}
/* 如果当前行的单元格都是无效的，那就继续下一行 */
if (row.getLastCellNum()<0) {
continue;
}
if(isMap && object != null) {
((Map) object).put("excelRowNum", row.getRowNum());
}
errorMsg = new StringBuilder();
// 判断是集合元素还是不是集合元素,如果是就继续加入这个集合,不是就创建新的对象
// keyIndex 如果为空就不处理,仍然处理这一行
if (params.getKeyIndex() != null
&& (row.getCell(params.getKeyIndex()) == null
|| StringUtils.isEmpty(getKeyValue(row.getCell(params.getKeyIndex()))))
&& object != null) {
for (ExcelCollectionParams param : excelCollection) {
addListContinue(object, param, row, titlemap, targetId, pictures, params, errorMsg);
}
} else {
object = PoiPublicUtil.createObject(pojoClass, targetId);
try {
Set<Integer> keys = titlemap.keySet();
for (Integer cn : keys) {
Cell cell = row.getCell(cn);
String titleString = (String) titlemap.get(cn);
if (excelParams.containsKey(titleString) || isMap) {
if (excelParams.get(titleString) != null
&& excelParams.get(titleString).getType() == BaseTypeConstants.IMAGE_TYPE) {
picId = row.getRowNum() + "_" + cn;
saveImage(object, picId, excelParams, titleString, pictures,
params);
} else {
try {
saveFieldValue(params, object, cell, excelParams, titleString, row);
} catch (ExcelImportException e) {
// 如果需要去校验就忽略,这个错误,继续执行
if (params.isNeedVerify() && ExcelImportEnum.GET_VALUE_ERROR.equals(e.getType())) {
errorMsg.append(" ").append(titleString).append(ExcelImportEnum.GET_VALUE_ERROR.getMsg());
}
}
}
}
}
//for (int i = row.getFirstCellNum(), le = titlemap.size(); i < le; i++) {
//}
if (object instanceof IExcelDataModel) {
((IExcelDataModel) object).setRowNum(row.getRowNum());
}
for (ExcelCollectionParams param : excelCollection) {
addListContinue(object, param, row, titlemap, targetId, pictures, params, errorMsg);
}
if (verifyingDataValidity(object, row, params, isMap, errorMsg)) {
collection.add(object);
} else {
failCollection.add(object);
}
} catch (ExcelImportException e) {
LOGGER.error("excel import error , row num:{},obj:{}", readRow, ReflectionToStringBuilder.toString(object));
if (!e.getType().equals(ExcelImportEnum.VERIFY_ERROR)) {
throw new ExcelImportException(e.getType(), e);
}
} catch (Exception e) {
LOGGER.error("excel import error , row num:{},obj:{}", readRow, ReflectionToStringBuilder.toString(object));
throw new RuntimeException(e);
}
}
readRow++;
}
}
return collection;
}
/**
* 校验数据合法性
*/
public boolean verifyingDataValidity(Object object, Row row, ImportParams params,
boolean isMap, StringBuilder fieldErrorMsg) {
boolean isAdd = true;
Cell cell = null;
if (params.isNeedVerify()) {
String errorMsg = PoiValidationUtil.validation(object, params.getVerifyGroup());
if (StringUtils.isNotEmpty(errorMsg)) {
cell = row.createCell(row.getLastCellNum());
cell.setCellValue(errorMsg);
if (object instanceof IExcelModel) {
IExcelModel model = (IExcelModel) object;
model.setErrorMsg(errorMsg);
}
isAdd = false;
verifyFail = true;
}
}
if (params.getVerifyHandler() != null) {
ExcelVerifyHandlerResult result = params.getVerifyHandler().verifyHandler(object);
if (!result.isSuccess()) {
if (cell == null) {
cell = row.createCell(row.getLastCellNum());
}
cell.setCellValue((StringUtils.isNoneBlank(cell.getStringCellValue())
? cell.getStringCellValue() + "," : "") + result.getMsg());
if (object instanceof IExcelModel) {
IExcelModel model = (IExcelModel) object;
model.setErrorMsg((StringUtils.isNoneBlank(model.getErrorMsg())
? model.getErrorMsg() + "," : "") + result.getMsg());
}
isAdd = false;
verifyFail = true;
}
}
if ((params.isNeedVerify() || params.getVerifyHandler() != null) && fieldErrorMsg.length() > 0) {
if (object instanceof IExcelModel) {
IExcelModel model = (IExcelModel) object;
model.setErrorMsg((StringUtils.isNoneBlank(model.getErrorMsg())
? model.getErrorMsg() + "," : "") + fieldErrorMsg.toString());
}
if (cell == null) {
cell = row.createCell(row.getLastCellNum());
}
cell.setCellValue((StringUtils.isNoneBlank(cell.getStringCellValue())
? cell.getStringCellValue() + "," : "") + fieldErrorMsg.toString());
isAdd = false;
verifyFail = true;
}
if (cell != null) {
cell.setCellStyle(errorCellStyle);
failRow.add(row);
if(isMap) {
((Map) object).put("excelErrorMsg", cell.getStringCellValue());
}
} else {
successRow.add(row);
}
return isAdd;
}
/**
* 获取表格字段列名对应信息
*/
private Map<Integer, String> getTitleMap(Iterator<Row> rows, ImportParams params,
List<ExcelCollectionParams> excelCollection,
Map<String, ExcelImportEntity> excelParams) {
Map<Integer, String> titlemap = new LinkedHashMap<Integer, String>();
Iterator<Cell> cellTitle;
String collectionName = null;
ExcelCollectionParams collectionParams = null;
Row row = null;
for (int j = 0; j < params.getHeadRows(); j++) {
row = rows.next();
if (row == null) {
continue;
}
cellTitle = row.cellIterator();
while (cellTitle.hasNext()) {
Cell cell = cellTitle.next();
String value = getKeyValue(cell);
value = value.replace("\n", "");
int i = cell.getColumnIndex();
//用以支持重名导入
if (StringUtils.isNotEmpty(value)) {
if (titlemap.containsKey(i)) {
collectionName = titlemap.get(i);
collectionParams = getCollectionParams(excelCollection, collectionName);
titlemap.put(i, collectionName + "_" + value);
} else if (StringUtils.isNotEmpty(collectionName) && collectionParams != null
&& collectionParams.getExcelParams()
.containsKey(collectionName + "_" + value)) {
titlemap.put(i, collectionName + "_" + value);
} else {
collectionName = null;
collectionParams = null;
}
if (StringUtils.isEmpty(collectionName)) {
titlemap.put(i, value);
}
}
}
}
// 处理指定列的情况
Set<String> keys = excelParams.keySet();
for (String key : keys) {
if (key.startsWith("FIXED_")) {
String[] arr = key.split("_");
titlemap.put(Integer.parseInt(arr[1]), key);
}
}
return titlemap;
}
/**
* 获取这个名称对应的集合信息
*/
private ExcelCollectionParams getCollectionParams(List<ExcelCollectionParams> excelCollection,
String collectionName) {
for (ExcelCollectionParams excelCollectionParams : excelCollection) {
if (collectionName.equals(excelCollectionParams.getExcelName())) {
return excelCollectionParams;
}
}
return null;
}
/**
* Excel 导入 field 字段类型 Integer,Long,Double,Date,String,Boolean
*/
public ExcelImportResult importExcelByIs(InputStream inputstream, Class<?> pojoClass,
ImportParams params, boolean needMore) throws Exception {
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("Excel import start ,class is {}", pojoClass);
}
List<T> result = new ArrayList<T>();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ExcelImportResult importResult;
try {
byte[] buffer = new byte[1024];
int len;
while ((len = inputstream.read(buffer)) > -1) {
baos.write(buffer, 0, len);
}
baos.flush();
InputStream userIs = new ByteArrayInputStream(baos.toByteArray());
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("Excel clone success");
}
Workbook book = WorkbookFactory.create(userIs);
boolean isXSSFWorkbook = !(book instanceof HSSFWorkbook);
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("Workbook create success");
}
importResult = new ExcelImportResult();
createErrorCellStyle(book);
Map<String, PictureData> pictures;
for (int i = params.getStartSheetIndex(); i < params.getStartSheetIndex()
+ params.getSheetNum(); i++) {
if (LOGGER.isDebugEnabled()) {
LOGGER.debug(" start to read excel by is ,startTime is {}", new Date());
}
if (isXSSFWorkbook) {
pictures = PoiPublicUtil.getSheetPictrues07((XSSFSheet) book.getSheetAt(i),
(XSSFWorkbook) book);
} else {
pictures = PoiPublicUtil.getSheetPictrues03((HSSFSheet) book.getSheetAt(i),
(HSSFWorkbook) book);
}
if (LOGGER.isDebugEnabled()) {
LOGGER.debug(" end to read excel by is ,endTime is {}", new Date());
}
result.addAll(importExcel(result, book.getSheetAt(i), pojoClass, params, pictures));
if (LOGGER.isDebugEnabled()) {
LOGGER.debug(" end to read excel list by sheet ,endTime is {}", new Date());
}
if (params.isReadSingleCell()) {
readSingleCell(importResult, book.getSheetAt(i), params);
if (LOGGER.isDebugEnabled()) {
LOGGER.debug(" read Key-Value ,endTime is {}", System.currentTimeMillis());
}
}
}
if (params.isNeedSave()) {
saveThisExcel(params, pojoClass, isXSSFWorkbook, book);
}
importResult.setList(result);
if (needMore) {
InputStream successIs = new ByteArrayInputStream(baos.toByteArray());
try {
Workbook successBook = WorkbookFactory.create(successIs);
if (params.isVerifyFileSplit()){
importResult.setWorkbook(removeSuperfluousRows(successBook, failRow, params));
importResult.setFailWorkbook(removeSuperfluousRows(book, successRow, params));
} else {
importResult.setWorkbook(book);
}
importResult.setFailList(failCollection);
importResult.setVerifyFail(verifyFail);
} finally {
successIs.close();
}
}
} finally {
IOUtils.closeQuietly(baos);
}
return importResult;
}
private Workbook removeSuperfluousRows(Workbook book, List<Row> rowList, ImportParams params) {
for (int i = params.getStartSheetIndex(); i < params.getStartSheetIndex()
+ params.getSheetNum(); i++) {
for (int j = rowList.size() - 1; j >= 0; j--) {
if (rowList.get(j).getRowNum() < rowList.get(j).getSheet().getLastRowNum()) {
book.getSheetAt(i).shiftRows(rowList.get(j).getRowNum() + 1, rowList.get(j).getSheet().getLastRowNum(), 1);
} else if (rowList.get(j).getRowNum() == rowList.get(j).getSheet().getLastRowNum()) {
book.getSheetAt(i).createRow(rowList.get(j).getRowNum() + 1);
book.getSheetAt(i).shiftRows(rowList.get(j).getRowNum() + 1, rowList.get(j).getSheet().getLastRowNum() + 1, 1);
}
}
}
return book;
}
/**
* 按照键值对的方式取得Excel里面的数据
*/
private void readSingleCell(ExcelImportResult result, Sheet sheet, ImportParams params) {
if (result.getMap() == null) {
result.setMap(new HashMap<String, Object>());
}
for (int i = 0; i < params.getTitleRows() + params.getHeadRows() + params.getStartRows(); i++) {
getSingleCellValueForRow(result, sheet.getRow(i), params);
}
for (int i = sheet.getLastRowNum() - params.getLastOfInvalidRow(); i < sheet.getLastRowNum(); i++) {
getSingleCellValueForRow(result, sheet.getRow(i), params);
}
}
private void getSingleCellValueForRow(ExcelImportResult result, Row row, ImportParams params) {
for (int j = row.getFirstCellNum(), le = row.getLastCellNum(); j < le; j++) {
String text = PoiCellUtil.getCellValue(row.getCell(j));
if (StringUtils.isNoneBlank(text) && text.endsWith(params.getKeyMark())) {
if (result.getMap().containsKey(text)) {
if (result.getMap().get(text) instanceof String) {
List<String> list = new ArrayList<String>();
list.add((String) result.getMap().get(text));
result.getMap().put(text, list);
}
((List) result.getMap().get(text)).add(PoiCellUtil.getCellValue(row.getCell(++j)));
} else {
result.getMap().put(text, PoiCellUtil.getCellValue(row.getCell(++j)));
}
}
}
}
/**
* 检查是不是合法的模板
*/
private void checkIsValidTemplate(Map<Integer, String> titlemap,
Map<String, ExcelImportEntity> excelParams,
ImportParams params,
List<ExcelCollectionParams> excelCollection) {
if (params.getImportFields() != null) {
// 同时校验列顺序
if (params.isNeedCheckOrder()) {
if (params.getImportFields().length != titlemap.size()) {
LOGGER.error("excel列顺序不一致");
throw new ExcelImportException(ExcelImportEnum.IS_NOT_A_VALID_TEMPLATE);
}
int i = 0;
for (String title : titlemap.values()) {
if (!StringUtils.equals(title, params.getImportFields()[i++])) {
LOGGER.error("excel列顺序不一致");
throw new ExcelImportException(ExcelImportEnum.IS_NOT_A_VALID_TEMPLATE);
}
}
} else {
for (int i = 0, le = params.getImportFields().length; i < le; i++) {
if (!titlemap.containsValue(params.getImportFields()[i])) {
throw new ExcelImportException(ExcelImportEnum.IS_NOT_A_VALID_TEMPLATE);
}
}
}
} else {
Collection<ExcelImportEntity> collection = excelParams.values();
for (ExcelImportEntity excelImportEntity : collection) {
if (excelImportEntity.isImportField()
&& !titlemap.containsValue(excelImportEntity.getName())) {
LOGGER.error(excelImportEntity.getName() + "必须有,但是没找到");
throw new ExcelImportException(ExcelImportEnum.IS_NOT_A_VALID_TEMPLATE);
}
}
for (int i = 0, le = excelCollection.size(); i < le; i++) {
ExcelCollectionParams collectionparams = excelCollection.get(i);
collection = collectionparams.getExcelParams().values();
for (ExcelImportEntity excelImportEntity : collection) {
if (excelImportEntity.isImportField() && !titlemap.containsValue(
collectionparams.getExcelName() + "_" + excelImportEntity.getName())) {
throw new ExcelImportException(ExcelImportEnum.IS_NOT_A_VALID_TEMPLATE);
}
}
}
}
}
/**
* 保存字段值(获取值,校验值,追加错误信息)
*/
public void saveFieldValue(ImportParams params, Object object, Cell cell,
Map<String, ExcelImportEntity> excelParams, String titleString,
Row row) throws Exception {
Object value = cellValueServer.getValue(params.getDataHandler(), object, cell, excelParams,
titleString, params.getDictHandler());
if (object instanceof Map) {
if (params.getDataHandler() != null) {
params.getDataHandler().setMapValue((Map) object, titleString, value);
} else {
((Map) object).put(titleString, value);
}
} else {
setValues(excelParams.get(titleString), object, value);
}
}
/**
* @param object
* @param picId
* @param excelParams
* @param titleString
* @param pictures
* @param params
* @throws Exception
*/
private void saveImage(Object object, String picId, Map<String, ExcelImportEntity> excelParams,
String titleString, Map<String, PictureData> pictures,
ImportParams params) throws Exception {
if (pictures == null) {
return;
}
PictureData image = pictures.get(picId);
if (image == null) {
return;
}
byte[] data = image.getData();
String fileName = "pic" + Math.round(Math.random() * 100000000000L);
fileName += "." + PoiPublicUtil.getFileExtendName(data);
if (excelParams.get(titleString).getSaveType() == 1) {
String path = getSaveUrl(excelParams.get(titleString), object);
File savefile = new File(path);
if (!savefile.exists()) {
savefile.mkdirs();
}
savefile = new File(path + File.separator + fileName);
FileOutputStream fos = new FileOutputStream(savefile);
try {
fos.write(data);
} finally {
IOUtils.closeQuietly(fos);
}
setValues(excelParams.get(titleString), object,
getSaveUrl(excelParams.get(titleString), object) + File.separator + fileName);
} else {
setValues(excelParams.get(titleString), object, data);
}
}
private void createErrorCellStyle(Workbook workbook) {
errorCellStyle = workbook.createCellStyle();
Font font = workbook.createFont();
font.setColor(Font.COLOR_RED);
errorCellStyle.setFont(font);
}
}
3.3 Maven 依赖
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>cn.afterturn</groupId>
<artifactId>easypoi-spring-boot-starter</artifactId>
<version>4.4.0</version>
</dependency>
<!-- 建议只用start -->
<dependency>
<groupId>cn.afterturn</groupId>
<artifactId>easypoi-base</artifactId>
<version>4.4.0</version>
</dependency>
<dependency>
<groupId>cn.afterturn</groupId>
<artifactId>easypoi-web</artifactId>
<version>4.4.0</version>
</dependency>
<dependency>
<groupId>cn.afterturn</groupId>
<artifactId>easypoi-annotation</artifactId>
<version>4.4.0</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.76</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>5.2.1.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator-annotation-processor</artifactId>
<version>5.2.1.Final</version>
</dependency>
<dependency>
<groupId>org.glassfish.web</groupId>
<artifactId>javax.el</artifactId>
<version>2.2.4</version>
</dependency>
4.git 完整代码
防止复现不了我说的情况，git