easyPoi实现Excel文件上传图片并改变自定义图片上传地址

使用easypoi遇到的一个上传图片自定义图片地址的问题,  解决后就保留一下

您正在使用easypoi进行excel导入图片,并希望可以更改导入后的图片地址,希望这篇文章能帮到您。

本文主要是使用easypoi通过模版的形式导入图片。

Maven依赖地址:


        
            cn.afterturn
            easypoi-base
            4.1.0
        
        
            cn.afterturn
            easypoi-web
            4.1.0
        
        
            cn.afterturn
            easypoi-annotation
            4.1.0
        

JAVA代码:

EasypoiUtil :

package com.niu.util;

import cn.afterturn.easypoi.excel.entity.ImportParams;
import cn.afterturn.easypoi.exception.excel.ExcelImportException;
import org.apache.commons.lang.builder.ReflectionToStringBuilder;
import org.apache.poi.util.IOUtils;

import java.io.File;
import java.io.FileInputStream;
import java.util.List;

/**
 * @program: spring-app-api
 * @description: EasypoiUtil
 * @author: Niu
 **/
public class EasypoiUtil {

    /**
     * Excel 导入 数据源本地文件,不返回校验结果 导入 字 段类型 Integer,Long,Double,Date,String,Boolean
     *
     * @param file
     * @param pojoClass
     * @param params
     * @return
     */
    public static  List importExcel(File file, Class pojoClass, ImportParams params) {
        FileInputStream in = null;
        try {
            in = new FileInputStream(file);
            return   new EasypoiExcelImportUtil().importExcelByIs(in, pojoClass, params, false).getList();
        } catch (ExcelImportException e) {
            throw new ExcelImportException(e.getType(), e);
        } catch (Exception e) {
            throw new ExcelImportException(e.getMessage(), e);
        } finally {
            IOUtils.closeQuietly(in);
        }
    }
    public static void main(String[] args) {
        try {
            ImportParams params = new ImportParams();
            EasypoiExcelImportUtil easypoiExcelImportUtil = new EasypoiExcelImportUtil();
            easypoiExcelImportUtil.saveUrl="d://";//图片保存地址
            List result =
                    EasypoiUtil.importExcel(
                            new File("D:\\imgniuexcel.xls"),
                            CompanyHasImgModel.class,
                            params);
            for (int i = 0; i < result.size(); i++) {
                System.out.println(ReflectionToStringBuilder.toString(result.get(i).getCompanyLogo()));
                System.out.println(ReflectionToStringBuilder.toString(result.get(i).getCompanyAddr()));
                System.out.println(ReflectionToStringBuilder.toString(result.get(i)));
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

EasypoiExcelImportUtil:

package com.niu.util;


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.excel.imports.CellValueService;
import cn.afterturn.easypoi.excel.imports.base.ImportBaseService;
import cn.afterturn.easypoi.exception.excel.ExcelImportException;
import cn.afterturn.easypoi.exception.excel.enums.ExcelImportEnum;
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.*;

/**
 * Excel 导入服务
 */
public class EasypoiExcelImportUtil extends ImportBaseService {

    private final static Logger LOGGER = LoggerFactory.getLogger(cn.afterturn.easypoi.excel.imports.ExcelImportService.class);

    private CellValueService cellValueServer;
    /**
     * 保存图片的地址
     */
    public static String                  saveUrl;

    private boolean verfiyFail = false;
    /**
     * 异常数据styler
     */
    private CellStyle errorCellStyle;

    private List successRow;
    private List failRow;
    private List failCollection = new ArrayList();

    public EasypoiExcelImportUtil() {
        successRow = new ArrayList();
        failRow = 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
     */
    private void addListContinue(Object object, ExcelCollectionParams param, Row row,
                                 Map titlemap, String targetId,
                                 Map pictures,
                                 ImportParams params) throws Exception {
        Collection collection = (Collection) PoiReflectorUtil.fromCache(object.getClass())
                .getValue(object, param.getName());
        Object entity = PoiPublicUtil.createObject(param.getType(), targetId);
        String picId;
        boolean isUsed = false;// 是否需要加上这个对象
        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() == 2) {
                    picId = row.getRowNum() + "_" + i;
                    saveImage(object, picId, param.getExcelParams(), titleString, pictures, params);
                } else {
                    saveFieldValue(params, entity, cell, param.getExcelParams(), titleString, row);
                }
                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();
    }

    private  List importExcel(Collection result, Sheet sheet, Class pojoClass,
                                    ImportParams params,
                                    Map pictures) throws Exception {
        List collection = new ArrayList();
        Map excelParams = new HashMap();
        List excelCollection = new ArrayList();
        String targetId = null;
        if (!Map.class.equals(pojoClass)) {
            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 rows = sheet.rowIterator();
        for (int j = 0; j < params.getTitleRows(); j++) {
            rows.next();
        }
        Map titlemap = getTitleMap(rows, params, excelCollection,excelParams);
        checkIsValidTemplate(titlemap, excelParams, params, excelCollection);
        Row row = null;
        Object object = null;
        String picId;
        int readRow = 0;
        //跳过无效行
        for (int i = 0; i < params.getStartRows(); i++) {
            rows.next();
        }
        while (rows.hasNext()
                && (row == null
                || sheet.getLastRowNum() - row.getRowNum() > params.getLastOfInvalidRow())) {
            if (params.getReadRows() > 0 && readRow > params.getReadRows()) {
                break;
            }
            row = rows.next();
            // Fix 如果row为无效行时候跳出
            if (sheet.getLastRowNum() - row.getRowNum() < params.getLastOfInvalidRow()) {
                break;
            }
            // 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);
                }
            } else {
                object = PoiPublicUtil.createObject(pojoClass, targetId);
                try {
                    Set keys = titlemap.keySet();
                    for (Integer cn:keys) {
                        Cell cell = row.getCell(cn);
                        String titleString = (String) titlemap.get(cn);
                        if (excelParams.containsKey(titleString) || Map.class.equals(pojoClass)) {
                            if (excelParams.get(titleString) != null
                                    && excelParams.get(titleString).getType() == 2) {
                                picId = row.getRowNum() + "_" + cn;
                                saveImage(object, picId, excelParams, titleString, pictures,
                                        params);
                            } else {
                                saveFieldValue(params, object, cell, excelParams, titleString, row);
                            }
                        }
                    }
                    //for (int i = row.getFirstCellNum(), le = titlemap.size(); i < le; i++) {

                    //}

                    for (ExcelCollectionParams param : excelCollection) {
                        addListContinue(object, param, row, titlemap, targetId, pictures, params);
                    }
                    if (verifyingDataValidity(object, row, params, pojoClass)) {
                        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
     */
    private boolean verifyingDataValidity(Object object, Row row, ImportParams params,
                                          Class pojoClass) {
        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;
                verfiyFail = 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;
                verfiyFail = true;
            }
        }
        if (cell != null) {
            cell.setCellStyle(errorCellStyle);
            failRow.add(row);
        } else {
            successRow.add(row);
        }
        return isAdd;
    }

    /**
     * 获取表格字段列名对应信息
     */
    private Map getTitleMap(Iterator rows, ImportParams params,
                                             List excelCollection,
                                             Map excelParams) {
        Map titlemap = new LinkedHashMap();
        Iterator 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 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 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 result = new ArrayList();
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        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");
        }
        ExcelImportResult importResult = new ExcelImportResult();
        createErrorCellStyle(book);
        Map 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 {}", System.currentTimeMillis());
            }
            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 {}", System.currentTimeMillis());
            }
            result.addAll(importExcel(result, book.getSheetAt(i), pojoClass, params, pictures));
            if (LOGGER.isDebugEnabled()) {
                LOGGER.debug(" end to read excel list by sheet ,endTime is {}", System.currentTimeMillis());
            }
            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());
            Workbook successBook = WorkbookFactory.create(successIs);
            importResult.setWorkbook(removeSuperfluousRows(successBook, failRow, params));
            importResult.setFailWorkbook(removeSuperfluousRows(book, successRow, params));
            importResult.setFailList(failCollection);
            importResult.setVerfiyFail(verfiyFail);
            successIs.close();
        }
        baos.close();
        return importResult;
    }

    private Workbook removeSuperfluousRows(Workbook book, List rowList, ImportParams params) {
        for (int i = params.getStartSheetIndex(); i < params.getStartSheetIndex()
                + params.getSheetNum(); i++) {
            for (int j = 0; j < rowList.size(); 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).shiftRows(rowList.get(j).getRowNum(), rowList.get(j).getSheet().getLastRowNum(), -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());
        }
        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 list = new ArrayList();
                        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 titlemap,
                                      Map excelParams,
                                      ImportParams params,
                                      List excelCollection) {

        if (params.getImportFields() != null) {
            if (params.isNeedCheckOrder()) { // 同时校验列顺序

                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 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)
     */
    private void saveFieldValue(ImportParams params, Object object, Cell cell,
                                Map 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 excelParams,
                           String titleString, Map pictures,
                           ImportParams params) throws Exception {
        if (pictures == null) {
            return;
        }
        PictureData image = pictures.get(picId);
        if (image == null) {
            return;
        }
        byte[] data = image.getData();
        //图片名称
        String fileName = "picncy" + Math.round(Math.random() * 100000000000L);
        fileName += "." + PoiPublicUtil.getFileExtendName(data);
        if (excelParams.get(titleString).getSaveType() == 1) {
            String path = this.saveUrl;
            File savefile = new File(path);
            if (!savefile.exists()) {
                savefile.mkdirs();
            }
            savefile = new File(path + "/" + fileName);
            FileOutputStream fos = new FileOutputStream(savefile);
            try {
                fos.write(data);
            } finally {
                IOUtils.closeQuietly(fos);
            }
            setValues(excelParams.get(titleString), object,
                    this.saveUrl + "/" + 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);
    }

}

CompanyHasImgModel:

package com.niu.util;

import cn.afterturn.easypoi.excel.annotation.Excel;

/**
 *
 */
public class CompanyHasImgModel {

    public CompanyHasImgModel() {
    }

    public CompanyHasImgModel(String companyName, String companyLogo, String companyAddr) {
        this.companyName = companyName;
        this.companyLogo = companyLogo;
        this.companyAddr = companyAddr;
    }

    @Excel(name = "公司名称")
    private String companyName;
    @Excel(name = "公司LOGO", type = 2 ,width = 40 ,imageType = 1)
    private String companyLogo;
    @Excel(name = "公司地址" ,width = 60)
    private String companyAddr;

    public String getCompanyName() {
        return companyName;
    }

    public void setCompanyName(String companyName) {
        this.companyName = companyName;
    }

    public String getCompanyLogo() {
        return companyLogo;
    }

    public void setCompanyLogo(String companyLogo) {
        this.companyLogo = companyLogo;
    }

    public String getCompanyAddr() {
        return companyAddr;
    }

    public void setCompanyAddr(String companyAddr) {
        this.companyAddr = companyAddr;
    }
}

Excel模版:

easyPoi实现Excel文件上传图片并改变自定义图片上传地址_第1张图片

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