用POI导出excle的时候报错,报错如下:java.lang.IncompatibleClassChangeError: Class org.apache.poi.hssf.usermodel.HSSFWorkbook does not implement the requested interface org.apache.poi.ss.usermodel.Workbook网上查了下,报java.lang.IncompatibleClassChangeError错的原因poi的jar包重复了,查了下jar包,果然有重复的包,删掉某...
在开发excle的通用导入导出功能,用到注解,报如下错误,包导入不进来RetentionPolicy cannot be resolved to a variableElementType cannot be resolved to a variable@Retention和@Target都能导入进来,没办法只能手动导入包了import java.lang.annotation.*或import java.lang.annotation.RetentionPolicy;import java.lang.annotation.Ele...