【easyExcel的导入、导出,支持百万并发 】

December 17, 2023
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一、excel的三个工具类

1. EasyExcelUtil

package com.hypersmart.datasource.utils.excel;


import com.alibaba.excel.EasyExcel;
import com.alibaba.excel.EasyExcelFactory;
import com.alibaba.excel.event.AnalysisEventListener;
import com.alibaba.excel.write.handler.WriteHandler;
import org.apache.poi.ss.formula.functions.T;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URLEncoder;
import java.util.List;
import java.util.Map;
import java.util.Set;

/**
 * @author 卞磊
 * @Description EasyExcelUtil
 * @Date 2020-06-26 09:02
 */
public class EasyExcelUtil {
    /**
     * 同步无模型读(默认读取sheet0,从第2行开始读)
     * @param filePath
     * @return
     */
    public static List<Map<Integer, String>> syncRead(String filePath){
        return EasyExcelFactory.read(filePath).sheet().doReadSync();
    }

    /**
     * 同步无模型读(默认表头占一行,从第2行开始读)
     * @param filePath
     * @param sheetNo sheet页号,从0开始
     * @return
     */
    public static List<Map<Integer, String>> syncRead(String filePath, Integer sheetNo){
        return EasyExcelFactory.read(filePath).sheet(sheetNo).doReadSync();
    }

    /**
     * 同步无模型读(指定sheet和表头占的行数)
     * @param inputStream
     * @param sheetNo sheet页号,从0开始
     * @param headRowNum 表头占的行数,从0开始(如果要连表头一起读出来则传0)
     * @return List<Map<colNum, cellValue>>
     */
    public static List<Map<Integer, String>> syncRead(InputStream inputStream, Integer sheetNo, Integer headRowNum){
        return EasyExcelFactory.read(inputStream).sheet(sheetNo).headRowNumber(headRowNum).doReadSync();
    }

    /**
     * 同步无模型读(指定sheet和表头占的行数)
     * @param file
     * @param sheetNo sheet页号,从0开始
     * @param headRowNum 表头占的行数,从0开始(如果要连表头一起读出来则传0)
     * @return List<Map<colNum, cellValue>>
     */
    public static List<Map<Integer, String>> syncRead(File file, Integer sheetNo, Integer headRowNum){
        return EasyExcelFactory.read(file).sheet(sheetNo).headRowNumber(headRowNum).doReadSync();
    }

    /**
     * 同步无模型读(指定sheet和表头占的行数)
     * @param filePath
     * @param sheetNo sheet页号,从0开始
     * @param headRowNum 表头占的行数,从0开始(如果要连表头一起读出来则传0)
     * @return List<Map<colNum, cellValue>>
     */
    public static List<Map<Integer, String>> syncRead(String filePath, Integer sheetNo, Integer headRowNum){
        return EasyExcelFactory.read(filePath).sheet(sheetNo).headRowNumber(headRowNum).doReadSync();
    }

    /**
     * 同步按模型读(默认读取sheet0,从第2行开始读)
     * @param filePath
     * @param clazz 模型的类类型(excel数据会按该类型转换成对象)
     * @return
     */
    public static List<T> syncReadModel(String filePath, Class clazz){
        return EasyExcelFactory.read(filePath).sheet().head(clazz).doReadSync();
    }

    /**
     * 同步按模型读(默认表头占一行,从第2行开始读)
     * @param filePath
     * @param clazz 模型的类类型(excel数据会按该类型转换成对象)
     * @param sheetNo sheet页号,从0开始
     * @return
     */
    public static List<T> syncReadModel(String filePath, Class clazz, Integer sheetNo){
        return EasyExcelFactory.read(filePath).sheet(sheetNo).head(clazz).doReadSync();
    }

    /**
     * 同步按模型读(指定sheet和表头占的行数)
     * @param inputStream
     * @param clazz 模型的类类型(excel数据会按该类型转换成对象)
     * @param sheetNo sheet页号,从0开始
     * @param headRowNum 表头占的行数,从0开始(如果要连表头一起读出来则传0)
     * @return
     */
    public static List<T> syncReadModel(InputStream inputStream, Class clazz, Integer sheetNo, Integer headRowNum){
        return EasyExcelFactory.read(inputStream).sheet(sheetNo).headRowNumber(headRowNum).head(clazz).doReadSync();
    }

    /**
     * 同步按模型读(指定sheet和表头占的行数)
     * @param file
     * @param clazz 模型的类类型(excel数据会按该类型转换成对象)
     * @param sheetNo sheet页号,从0开始
     * @param headRowNum 表头占的行数,从0开始(如果要连表头一起读出来则传0)
     * @return
     */
    public static List<T> syncReadModel(File file, Class clazz, Integer sheetNo, Integer headRowNum){
        return EasyExcelFactory.read(file).sheet(sheetNo).headRowNumber(headRowNum).head(clazz).doReadSync();
    }

    /**
     * 同步按模型读(指定sheet和表头占的行数)
     * @param filePath
     * @param clazz 模型的类类型(excel数据会按该类型转换成对象)
     * @param sheetNo sheet页号,从0开始
     * @param headRowNum 表头占的行数,从0开始(如果要连表头一起读出来则传0)
     * @return
     */
    public static List<T> syncReadModel(String filePath, Class clazz, Integer sheetNo, Integer headRowNum){
        return EasyExcelFactory.read(filePath).sheet(sheetNo).headRowNumber(headRowNum).head(clazz).doReadSync();
    }

    /**
     * 异步无模型读(默认读取sheet0,从第2行开始读)
     * @param excelListener 监听器,在监听器中可以处理行数据LinkedHashMap,表头数据,异常处理等
     * @param filePath 表头占的行数,从0开始(如果要连表头一起读出来则传0)
     * @return
     */
    public static void asyncRead(String filePath, AnalysisEventListener<T> excelListener){
        EasyExcelFactory.read(filePath, excelListener).sheet().doRead();
    }

    /**
     * 异步无模型读(默认表头占一行,从第2行开始读)
     * @param filePath 表头占的行数,从0开始(如果要连表头一起读出来则传0)
     * @param excelListener 监听器,在监听器中可以处理行数据LinkedHashMap,表头数据,异常处理等
     * @param sheetNo sheet页号,从0开始
     * @return
     */
    public static void asyncRead(String filePath, AnalysisEventListener<T> excelListener, Integer sheetNo){
        EasyExcelFactory.read(filePath, excelListener).sheet(sheetNo).doRead();
    }

    /**
     * 异步无模型读(指定sheet和表头占的行数)
     * @param inputStream
     * @param excelListener 监听器,在监听器中可以处理行数据LinkedHashMap,表头数据,异常处理等
     * @param sheetNo sheet页号,从0开始
     * @param headRowNum 表头占的行数,从0开始(如果要连表头一起读出来则传0)
     * @return
     */
    public static void asyncRead(InputStream inputStream, AnalysisEventListener<T> excelListener, Integer sheetNo, Integer headRowNum){
        EasyExcelFactory.read(inputStream, excelListener).sheet(sheetNo).headRowNumber(headRowNum).doRead();
    }

    /**
     * 异步无模型读(指定sheet和表头占的行数)
     * @param file
     * @param excelListener 监听器,在监听器中可以处理行数据LinkedHashMap,表头数据,异常处理等
     * @param sheetNo sheet页号,从0开始
     * @param headRowNum 表头占的行数,从0开始(如果要连表头一起读出来则传0)
     * @return
     */
    public static void asyncRead(File file, AnalysisEventListener<T> excelListener, Integer sheetNo, Integer headRowNum){
        EasyExcelFactory.read(file, excelListener).sheet(sheetNo).headRowNumber(headRowNum).doRead();
    }

    /**
     * 异步无模型读(指定sheet和表头占的行数)
     * @param filePath
     * @param excelListener 监听器,在监听器中可以处理行数据LinkedHashMap,表头数据,异常处理等
     * @param sheetNo sheet页号,从0开始
     * @param headRowNum 表头占的行数,从0开始(如果要连表头一起读出来则传0)
     * @return
     */
    public static void asyncRead(String filePath, AnalysisEventListener<T> excelListener, Integer sheetNo, Integer headRowNum){
        EasyExcelFactory.read(filePath, excelListener).sheet(sheetNo).headRowNumber(headRowNum).doRead();
    }

    /**
     * 异步按模型读取(默认读取sheet0,从第2行开始读)
     * @param filePath
     * @param excelListener 监听器,在监听器中可以处理行数据LinkedHashMap,表头数据,异常处理等
     * @param clazz 模型的类类型(excel数据会按该类型转换成对象)
     */
    public static void asyncReadModel(String filePath, AnalysisEventListener<T> excelListener, Class clazz){
        EasyExcelFactory.read(filePath, clazz, excelListener).sheet().doRead();
    }

    /**
     * 异步按模型读取(默认表头占一行,从第2行开始读)
     * @param filePath
     * @param excelListener 监听器,在监听器中可以处理行数据LinkedHashMap,表头数据,异常处理等
     * @param clazz 模型的类类型(excel数据会按该类型转换成对象)
     * @param sheetNo  sheet页号,从0开始
     */
    public static void asyncReadModel(String filePath, AnalysisEventListener<T> excelListener, Class clazz, Integer sheetNo){
        EasyExcelFactory.read(filePath, clazz, excelListener).sheet(sheetNo).doRead();
    }

    /**
     * 异步按模型读取
     * @param inputStream
     * @param excelListener 监听器,在监听器中可以处理行数据LinkedHashMap,表头数据,异常处理等
     * @param clazz 模型的类类型(excel数据会按该类型转换成对象)
     * @param sheetNo  sheet页号,从0开始
     * @param headRowNum 表头占的行数,从0开始(如果要连表头一起读出来则传0)
     */
    public static void asyncReadModel(InputStream inputStream, AnalysisEventListener<T> excelListener, Class clazz, Integer sheetNo, Integer headRowNum){
        EasyExcelFactory.read(inputStream, clazz, excelListener).sheet(sheetNo).headRowNumber(headRowNum).doRead();
    }

    /**
     * 异步按模型读取
     * @param file
     * @param excelListener 监听器,在监听器中可以处理行数据LinkedHashMap,表头数据,异常处理等
     * @param clazz 模型的类类型(excel数据会按该类型转换成对象)
     * @param sheetNo  sheet页号,从0开始
     * @param headRowNum 表头占的行数,从0开始(如果要连表头一起读出来则传0)
     */
    public static void asyncReadModel(File file, AnalysisEventListener<T> excelListener, Class clazz, Integer sheetNo, Integer headRowNum){
        EasyExcelFactory.read(file, clazz, excelListener).sheet(sheetNo).headRowNumber(headRowNum).doRead();
    }

    /**
     * 异步按模型读取
     * @param filePath
     * @param excelListener 监听器,在监听器中可以处理行数据LinkedHashMap,表头数据,异常处理等
     * @param clazz 模型的类类型(excel数据会按该类型转换成对象)
     * @param sheetNo  sheet页号,从0开始
     * @param headRowNum 表头占的行数,从0开始(如果要连表头一起读出来则传0)
     */
    public static void asyncReadModel(String filePath, AnalysisEventListener<T> excelListener, Class clazz, Integer sheetNo, Integer headRowNum){
        EasyExcelFactory.read(filePath, clazz, excelListener).sheet(sheetNo).headRowNumber(headRowNum).doRead();
    }

    /**
     * 无模板写文件
     * @param filePath
     * @param head 表头数据
     * @param data 表内容数据
     */
    public static void write(String filePath, List<List<String>> head, List<List<Object>> data){
        EasyExcel.write(filePath).head(head).sheet().doWrite(data);
    }

    /**
     * 无模板写文件
     * @param filePath
     * @param head 表头数据
     * @param data 表内容数据
     * @param sheetNo sheet页号,从0开始
     * @param sheetName sheet名称
     */
    public static void write(String filePath, List<List<String>> head, List<List<Object>> data, Integer sheetNo, String sheetName){
        EasyExcel.write(filePath).head(head).sheet(sheetNo, sheetName).doWrite(data);
    }

    /**
     * 根据excel模板文件写入文件
     * @param filePath
     * @param templateFileName
     * @param headClazz
     * @param data
     */
    public static void writeTemplate(String filePath, String templateFileName, Class headClazz, List data){
        EasyExcel.write(filePath, headClazz).withTemplate(templateFileName).sheet().doWrite(data);
    }

    /**
     * 根据excel模板文件写入文件
     * @param filePath
     * @param templateFileName
     * @param data
     */
    public static void writeTemplate(String filePath, String templateFileName, List data){
        EasyExcel.write(filePath).withTemplate(templateFileName).sheet().doWrite(data);
    }

    /**
     * 按模板写文件
     * @param filePath
     * @param headClazz 表头模板
     * @param data 数据
     */
    public static void write(String filePath, Class headClazz, List data){
        EasyExcel.write(filePath, headClazz).sheet().doWrite(data);
    }

    /**
     * 按模板写文件
     * @param filePath
     * @param headClazz 表头模板
     * @param data 数据
     * @param sheetNo sheet页号,从0开始
     * @param sheetName sheet名称
     */
    public static void write(String filePath, Class headClazz, List data, Integer sheetNo, String sheetName){
        EasyExcel.write(filePath, headClazz).sheet(sheetNo, sheetName).doWrite(data);
    }

    /**
     * 按模板写文件
     * @param filePath
     * @param headClazz 表头模板
     * @param data 数据
     * @param writeHandler 自定义的处理器,比如设置table样式,设置超链接、单元格下拉框等等功能都可以通过这个实现(需要注册多个则自己通过链式去调用)
     * @param sheetNo sheet页号,从0开始
     * @param sheetName sheet名称
     */
    public static void write(String filePath, Class headClazz, List data, WriteHandler writeHandler, Integer sheetNo, String sheetName){
        EasyExcel.write(filePath, headClazz).registerWriteHandler(writeHandler).sheet(sheetNo, sheetName).doWrite(data);
    }

    /**
     * 按模板写文件(包含某些字段)
     * @param filePath
     * @param headClazz 表头模板
     * @param data 数据
     * @param includeCols 过滤包含的字段,根据字段名称过滤
     * @param sheetNo sheet页号,从0开始
     * @param sheetName sheet名称
     */
    public static void writeInclude(String filePath, Class headClazz, List data, Set<String> includeCols, Integer sheetNo, String sheetName){
        EasyExcel.write(filePath, headClazz).includeColumnFiledNames(includeCols).sheet(sheetNo, sheetName).doWrite(data);
    }

    /**
     * 按模板写文件(排除某些字段)
     * @param filePath
     * @param headClazz 表头模板
     * @param data 数据
     * @param excludeCols 过滤排除的字段,根据字段名称过滤
     * @param sheetNo sheet页号,从0开始
     * @param sheetName sheet名称
     */
    public static void writeExclude(String filePath, Class headClazz, List data, Set<String> excludeCols, Integer sheetNo, String sheetName){
        EasyExcel.write(filePath, headClazz).excludeColumnFiledNames(excludeCols).sheet(sheetNo, sheetName).doWrite(data);
    }

    /**
     * 多个sheet页的数据链式写入
     * ExcelUtil.writeWithSheets(outputStream)
     *                 .writeModel(ExcelModel.class, excelModelList, "sheetName1")
     *                 .write(headData, data,"sheetName2")
     *                 .finish();
     * @param outputStream
     * @return
     */
    public static EasyExcelWriterFactory writeWithSheets(OutputStream outputStream){
        EasyExcelWriterFactory excelWriter = new EasyExcelWriterFactory(outputStream);
        return excelWriter;
    }

    /**
     * 多个sheet页的数据链式写入
     * ExcelUtil.writeWithSheets(file)
     *                 .writeModel(ExcelModel.class, excelModelList, "sheetName1")
     *                 .write(headData, data,"sheetName2")
     *                 .finish();
     * @param file
     * @return
     */
    public static EasyExcelWriterFactory writeWithSheets(File file){
        EasyExcelWriterFactory excelWriter = new EasyExcelWriterFactory(file);
        return excelWriter;
    }

    /**
     * 多个sheet页的数据链式写入
     * ExcelUtil.writeWithSheets(filePath)
     *                 .writeModel(ExcelModel.class, excelModelList, "sheetName1")
     *                 .write(headData, data,"sheetName2")
     *                 .finish();
     * @param filePath
     * @return
     */
    public static EasyExcelWriterFactory writeWithSheets(String filePath){
        EasyExcelWriterFactory excelWriter = new EasyExcelWriterFactory(filePath);
        return excelWriter;
    }

    /**
     * 多个sheet页的数据链式写入(失败了会返回一个有部分数据的Excel)
     * ExcelUtil.writeWithSheets(response, exportFileName)
     *                 .writeModel(ExcelModel.class, excelModelList, "sheetName1")
     *                 .write(headData, data,"sheetName2")
     *                 .finish();
     * @param exportFileName 导出的文件名称
     * @return
     */
    public static EasyExcelWriterFactory writeWithSheetsWeb(String exportFileName) throws IOException{
        ServletRequestAttributes servletRequestAttributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        HttpServletResponse response = servletRequestAttributes.getResponse();
        response.setContentType("application/vnd.ms-excel");
        response.setCharacterEncoding("utf-8");
        // 这里URLEncoder.encode可以防止中文乱码
        String fileName = URLEncoder.encode(exportFileName, "UTF-8");
        response.setHeader("Content-disposition", "attachment;filename=" + fileName + ".xlsx");
        EasyExcelWriterFactory excelWriter = new EasyExcelWriterFactory(response.getOutputStream());
        return excelWriter;
    }
}

2. DefaultExcelListener

package com.hypersmart.datasource.utils.excel;

import com.alibaba.excel.context.AnalysisContext;
import com.alibaba.excel.event.AnalysisEventListener;
import com.alibaba.excel.exception.ExcelDataConvertException;
import com.alibaba.fastjson.JSON;
import lombok.extern.slf4j.Slf4j;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

/**
 * @author 卞磊
 * @Description 默认按模型读取的监听器
 * @Date 2020-06-26 09:04
 */

@Slf4j
public class DefaultExcelListener<T> extends AnalysisEventListener<T> {
    private final List<T> rows = new ArrayList();

    @Override
    public void invokeHeadMap(Map<Integer, String> headMap, AnalysisContext context) {
        log.info("解析到一条头数据:{}", JSON.toJSONString(headMap));
    }

    @Override
    public void invoke(T object, AnalysisContext context) {
        rows.add(object);
        // 实际数据量比较大时,rows里的数据可以存到一定量之后进行批量处理(比如存到数据库),
        // 然后清空列表,以防止内存占用过多造成OOM
    }

    @Override
    public void doAfterAllAnalysed(AnalysisContext context) {
        log.info("read {} rows", rows.size());
    }

    /**
     * 在转换异常 获取其他异常下会调用本接口。抛出异常则停止读取。如果这里不抛出异常则 继续读取下一行。
     * @param exception
     * @param context
     * @throws Exception
     */
    @Override
    public void onException(Exception exception, AnalysisContext context) {
        log.error("解析失败,但是继续解析下一行:{}", exception.getMessage());
        if (exception instanceof ExcelDataConvertException) {
            ExcelDataConvertException excelDataConvertException = (ExcelDataConvertException)exception;
            log.error("第{}行,第{}列解析异常,数据为:{}", excelDataConvertException.getRowIndex(),
                    excelDataConvertException.getColumnIndex(), excelDataConvertException.getCellData());
        }
    }

    public List<T> getRows() {
        return rows;
    }
}

3. EasyExcelWriterFactory

package com.hypersmart.datasource.utils.excel;


import com.alibaba.excel.EasyExcel;
import com.alibaba.excel.ExcelWriter;

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

/**
 * @author 卞磊
 * @Description 自定义EasyExcel写工厂
 * @Date 2020-06-26 09:06
 */

public class EasyExcelWriterFactory {
    private int sheetNo = 0;
    private ExcelWriter excelWriter = null;

    public EasyExcelWriterFactory(OutputStream outputStream) {
        excelWriter = EasyExcel.write(outputStream).build();
    }

    public EasyExcelWriterFactory(File file) {
        excelWriter = EasyExcel.write(file).build();
    }

    public EasyExcelWriterFactory(String filePath) {
        excelWriter = EasyExcel.write(filePath).build();
    }

    /**
     * 链式模板表头写入
     * @param headClazz 表头格式
     * @param data 数据 List<ExcelModel> 或者List<List<Object>>
     * @return
     */
    public EasyExcelWriterFactory writeModel(Class headClazz, List data, String sheetName){
        excelWriter.write(data, EasyExcel.writerSheet(this.sheetNo++, sheetName).head(headClazz).build());
        return this;
    }

    /**
     * 链式自定义表头写入
     * @param head
     * @param data 数据 List<ExcelModel> 或者List<List<Object>>
     * @param sheetName
     * @return
     */
    public EasyExcelWriterFactory write(List<List<String>> head, List data, String sheetName){
        excelWriter.write(data, EasyExcel.writerSheet(this.sheetNo++, sheetName).head(head).build());
        return this;
    }

    public void finish() {
        excelWriter.finish();
    }
}

4. Converter 转换器 【这里就举 3个类型的转换案例,其余模仿即可】

4.1 字符串的key转换成 中文导出

package com.hypersmart.datasource.utils.excel.converter;

import com.alibaba.excel.converters.Converter;
import com.alibaba.excel.enums.CellDataTypeEnum;
import com.alibaba.excel.metadata.CellData;
import com.alibaba.excel.metadata.GlobalConfiguration;
import com.alibaba.excel.metadata.property.ExcelContentProperty;

/**
 * @author bian lei
 * @version 1.0
 * @date 2021/7/5 14:49
 * @des 使用状态 normal:正常,aberrant 异常,part_aberrant 部分异常,outflow:流失,expired :已过期
 */
public class UseStatusConverter implements Converter<String> {
    @Override
    public Class supportJavaTypeKey() {
        return String.class;
    }

    @Override
    public CellDataTypeEnum supportExcelTypeKey() {
        return CellDataTypeEnum.STRING;
    }

    @Override
    public String convertToJavaData(CellData cellData, ExcelContentProperty excelContentProperty, GlobalConfiguration globalConfiguration) throws Exception {
        return null;
    }

    @Override
    public CellData convertToExcelData(String str, ExcelContentProperty excelContentProperty, GlobalConfiguration globalConfiguration) throws Exception {
        String auditStatus;
        switch (str){
            case "normal":
                auditStatus = "正常";
                break;
            case "aberrant":
                auditStatus = "异常";
                break;
            case "part_aberrant":
                auditStatus = "部分异常";
                break;
            case "outflow":
                auditStatus = "流失";
                break;
            case "expired":
                auditStatus = "已过期";
                break;
            default:
                auditStatus = "此状态不存在";
                break;
        }

        return new CellData(auditStatus);
    }
}

4.2 date日期导出excel

package com.hypersmart.datasource.utils.excel.converter;

import com.alibaba.excel.converters.Converter;
import com.alibaba.excel.enums.CellDataTypeEnum;
import com.alibaba.excel.metadata.CellData;
import com.alibaba.excel.metadata.GlobalConfiguration;
import com.alibaba.excel.metadata.property.ExcelContentProperty;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;

import java.util.Date;
import java.util.Objects;

import static com.hypersmart.datasource.utils.DateUtils.DATE_TIME_FORMAT;


/**
 * @author bian lei
 * @version 1.0
 * @date 2021/3/4 16:34
 * 时间转换器  yyyy-MM-dd HH:mm:ss
 */
@Slf4j
public class DateHSMConverter implements Converter<Date> {

    @Override
    public Class supportJavaTypeKey() {
        return Date.class;
    }

    @Override
    public CellDataTypeEnum supportExcelTypeKey() {
        return CellDataTypeEnum.STRING;
    }

    @Override
    public Date convertToJavaData(CellData cellData, ExcelContentProperty excelContentProperty, GlobalConfiguration globalConfiguration) throws Exception {
        String stringValue = cellData.getStringValue();
        if(StringUtils.isBlank(stringValue)){
            return null;
        }
        try{
            return DATE_TIME_FORMAT.parse(stringValue.trim());
        }catch (Exception e){
            log.error("DateConverter.convertToJavaData error >>> ", e);
        }
        return null;
    }

    @Override
    public CellData convertToExcelData(Date date, ExcelContentProperty excelContentProperty, GlobalConfiguration globalConfiguration) throws Exception {
        if(Objects.isNull(date)){
            return new CellData(StringUtils.EMPTY);
        }
        return new CellData(DATE_TIME_FORMAT.format(date));
    }
}

4.3 Integer 类型导出

package com.hypersmart.datasource.utils.excel.converter;

import com.alibaba.excel.converters.Converter;
import com.alibaba.excel.enums.CellDataTypeEnum;
import com.alibaba.excel.metadata.CellData;
import com.alibaba.excel.metadata.GlobalConfiguration;
import com.alibaba.excel.metadata.property.ExcelContentProperty;

/**
 * @author bian lei
 * @version 1.0
 * @date 2021/7/5 14:41
 * @des 魔盒异常类型 1、计划暂不使用 2、新实施 3、项目未交付 4、系统不会使用 5、客户无意向使用 6、产品功能问题
 */
public class AberrantTypeConverter implements Converter<Integer> {
    @Override
    public Class supportJavaTypeKey() {
        return Integer.class;
    }

    @Override
    public CellDataTypeEnum supportExcelTypeKey() {
        return CellDataTypeEnum.STRING;
    }

    @Override
    public Integer convertToJavaData(CellData cellData, ExcelContentProperty excelContentProperty, GlobalConfiguration globalConfiguration) throws Exception {
        return cellData.getDataFormat().intValue();
    }

    @Override
    public CellData convertToExcelData(Integer integer, ExcelContentProperty excelContentProperty, GlobalConfiguration globalConfiguration) throws Exception {
        String auditStatus;
        switch (integer){
            case 1:
                auditStatus = "计划暂不使用";
                break;
            case 2:
                auditStatus = "新实施";
                break;
            case 3:
                auditStatus = "项目未交付";
                break;
            case 4:
                auditStatus = "系统不会使用";
                break;
            case 5:
                auditStatus = "客户无意向使用";
                break;
            case 6:
                auditStatus = "产品功能问题";
                break;
            default:
                auditStatus = "此状态不存在";
                break;
        }

        return new CellData(auditStatus);
    }
}

二 代码案例

mode

package com.hypersmart.datasource.dto;

import com.alibaba.excel.annotation.ExcelProperty; import com.fasterxml.jackson.annotation.JsonFormat; import com.hypersmart.datasource.utils.excel.converter.*; import io.swagger.annotations.ApiModel; import io.swagger.annotations.ApiModelProperty; import lombok.Getter; import lombok.Setter; import lombok.ToString; import org.springframework.format.annotation.DateTimeFormat;

import java.io.Serializable; import java.util.Date;

/**

  • @author bian lei
  • @version 1.0
  • @date 2021/7/5 13:39 */ @Setter @Getter @ToString @ApiModel(“租户管理导出实体”) public class TenantExcelDto implements Serializable { private static final long serialVersionUID = 1L; @ApiModelProperty(value = “客服经理”) @ExcelProperty(value = “客服经理”) private String customerServiceManage; @ApiModelProperty(value = “使用状态 normal:正常,aberrant 异常,part_aberrant 部分异常,outflow:流失,expired:已过期”) @ExcelProperty(value = “使用状态” ,converter = UseStatusConverter.class) private String useStatus; @ApiModelProperty(value = “BMS异常类型 1、计划暂不使用 2、新实施 3、项目未交付 4、系统不会使用 5、客户无意向使用 6、产品功能问题”) @ExcelProperty(value = “物管异常类型” ,converter = AberrantTypeConverter.class) private Integer bmsAberrantType; @ApiModelProperty(value = “最近跟进时间”) @ExcelProperty(value = “最近跟进时间” ,converter = DateHSMConverter.class) @DateTimeFormat(pattern = “yyyy-MM-dd HH:mm:ss”) @JsonFormat(pattern = “yyyy-MM-dd HH:mm:ss”, timezone = “GMT+8”) private Date followRecordTime;

}

Controller

 @PostMapping({"/export"})
    @ApiOperation(value = "租户跟进管理导出", httpMethod = "POST", notes = "开发人:卞磊 ")
    public void export(@ApiParam(name = "tenant", value = "租户信息表业务对象", required = true) @RequestBody XXX xx) {
        contractManagementService.export(xx);
    }

Service

 @Override
    public void export(QueryFilter<Tenant> queryFilter) {
        List<TenantExcelDto> tenantExcelDtoList = new ArrayList<>();
        queryFilter.setPageBean(new PageBean(1, 50000));
        PageList<TenantDTO> pageList = tenantFollowUpList(queryFilter);//获取数据源的接口,替换称自己的即可
        if (CollectionUtils.isNotEmpty(pageList.getRows())) {
            for (TenantDTO row : pageList.getRows()) {
                TenantExcelDto tenantExcelDto = new TenantExcelDto();
                BeanUtils.copyProperties(row, tenantExcelDto);
                tenantExcelDtoList.add(tenantExcelDto);
            }
        }
        try {
            EasyExcelUtil.writeWithSheetsWeb("租户跟进列表")
                    .writeModel(TenantExcelDto.class, tenantExcelDtoList, "租户跟进列表")
                    .finish();
        } catch (IOException e) {
            logger.error("租户跟进列表:{}", e.getMessage(), e);
        }

    }

截图

在这里插入图片描述
在这里插入图片描述

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