package com.gkhy.exam.common.utils;
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import lombok.AccessLevel;
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import lombok.NoArgsConstructor;
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import lombok.extern.slf4j.Slf4j;
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import org.apache.pdfbox.pdmodel.PDDocument;
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import org.apache.poi.hslf.usermodel.HSLFSlideShow;
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import org.apache.poi.hssf.usermodel.HSSFWorkbook;
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import org.apache.poi.hwpf.HWPFDocument;
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import org.apache.poi.xslf.usermodel.XMLSlideShow;
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import org.apache.poi.xssf.usermodel.XSSFWorkbook;
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import org.apache.poi.xwpf.usermodel.XWPFDocument;
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import java.io.InputStream;
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/**
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* 文档工具
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*
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* @author LYQ
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*/
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@Slf4j
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@NoArgsConstructor(access = AccessLevel.PRIVATE)
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public final class DocUtils {
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/**
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* 获取文档页数
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*
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* @param fileName 文档名称
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* @param is 文件流
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* @return 文档页数
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*/
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public static int getDocPageCount(String fileName, InputStream is) {
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if (is == null) {
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return 0;
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}
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try {
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// txt
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if (fileName.endsWith(".txt")) {
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return 1;
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}
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// excel 97~2003
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if (fileName.endsWith(".xls")) {
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HSSFWorkbook workbook = new HSSFWorkbook(is);
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int sheetNums = workbook.getNumberOfSheets();
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if (sheetNums > 0) {
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return workbook.getSheetAt(0).getRowBreaks().length + 1;
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}
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return 0;
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}
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// excel 新版
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if (fileName.endsWith(".xlsx")) {
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XSSFWorkbook xwb = new XSSFWorkbook(is);
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int sheetNums = xwb.getNumberOfSheets();
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if (sheetNums > 0) {
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return xwb.getSheetAt(0).getRowBreaks().length + 1;
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}
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return 0;
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}
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// word 97~2003
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if (fileName.endsWith(".doc")) {
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HWPFDocument wordDoc = new HWPFDocument(is);
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return wordDoc.getSummaryInformation().getPageCount();
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}
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// word 新版
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if (fileName.endsWith(".docx")) {
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XWPFDocument wordDoc = new XWPFDocument(is);
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return wordDoc.getProperties().getExtendedProperties().getUnderlyingProperties().getPages();
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}
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// ppt 97~2003
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if (fileName.endsWith(".ppt")) {
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HSLFSlideShow slideShow = new HSLFSlideShow(is);
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return slideShow.getSlides().size();
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}
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// ppt 新版
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if (fileName.endsWith(".pptx")) {
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XMLSlideShow slideShow = new XMLSlideShow(is);
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return slideShow.getSlides().size();
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}
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// pdf
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if (fileName.endsWith(".pdf")) {
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PDDocument doc = PDDocument.load(is);
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return doc.getNumberOfPages();
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}
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} catch (Exception e) {
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log.error("获取文档页数失败！", e);
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}
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return 0;
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}
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}
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