package 折线图;import orgapachepoissusermodelCell;import orgapachepoissusermodelCellType;import orgapachepoissusermodelRow;import orgapachepoissutilCellRangeAddress;import orgapachepoixddfusermodel;impor

在代码中添加以下导入语句：

import org.apache.poi.xddf.usermodel.text.XDDFTextParagraph;
import org.apache.poi.xddf.usermodel.text.XDDFTextParagraphBullet;
import org.apache.poi.xddf.usermodel.text.XDDFTextParagraphLevel;
import org.apache.poi.xddf.usermodel.text.XDDFTextRun;

这些导入语句将引入所需的类，以解决找不到符号的错误。