POI导入导出实现(包含级联下拉)
引入上一篇所用到的类 package com.**.**.service.common.impl; import com.google.common.collect.Lists; import com.google.common.collect.Maps; import lombok.extern.slf4j.Slf4j; import org.apache.commons.collections4.map.LinkedMap; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.ss.usermodel.*; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import org.springframework.web.multipart.MultipartFile; import javax.servlet.ServletOutputStream; import javax.servlet.http.HttpServletRequest; import javax.servlet.http