有的時候需要將excel中所包含的圖片在導入的時候取出來存到服務器中，
詳細實現代碼如下：
package com.liuf.util; import java.io.BufferedInputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.text.DecimalFormat; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Arrays; import java.util.Date; import java.util.HashMap; import java.util.List; import java.util.Map; import org.apache.poi.POIXMLDocumentPart; import org.apache.poi.hssf.usermodel.HSSFCell; import org.apache.poi.hssf.usermodel.HSSFClientAnchor; import org.apache.poi.hssf.usermodel.HSSFDateUtil; import org.apache.poi.hssf.usermodel.HSSFPicture; import org.apache.poi.hssf.usermodel.HSSFPictureData; import org.apache.poi.hssf.usermodel.HSSFRow; import org.apache.poi.hssf.usermodel.HSSFShape; import org.apache.poi.hssf.usermodel.HSSFSheet; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.poifs.filesystem.POIFSFileSystem; import org.apache.poi.xssf.usermodel.XSSFClientAnchor; import org.apache.poi.xssf.usermodel.XSSFDrawing; import org.apache.poi.xssf.usermodel.XSSFPicture; import org.apache.poi.xssf.usermodel.XSSFPictureData; import org.apache.poi.xssf.usermodel.XSSFShape; import org.apache.poi.xssf.usermodel.XSSFSheet; import org.openxmlformats.schemas.drawingml.x2006.spreadsheetDrawing.CTMarker; /** * 從excel中取出圖片的功能代碼 * @author Administrator * 2019-11-26 */ public class ExcelImageUtil { public static void main(String[] args) throws Exception { File file = new File("D:"+ File.separator +"123.xls"); getData(file,0); } /** * 讀取Excel的內容，第一維數組存儲的是一行中格列的值，二維數組存儲的是多少個行 * @param file 讀取數據的源Excel * @param ignoreRows 讀取數據忽略的行數，比喻行頭不需要讀入 忽略的行數為1 * @return 讀出的Excel中數據的內容 * @throws FileNotFoundException * @throws IOException */ public static String[][] getData(File file, int ignoreRows) throws FileNotFoundException, IOException { List<String[]> result = new ArrayList<String[]>(); int rowSize = 0; BufferedInputStream in = new BufferedInputStream(new FileInputStream( file)); // 打開HSSFWorkbook POIFSFileSystem fs = new POIFSFileSystem(in); HSSFWorkbook wb = new HSSFWorkbook(fs);
//1.讀出的Excel中的圖片 Map<String, HSSFPictureData> maplist=null; HSSFSheet sheet =null; sheet = wb.getSheetAt(0); // 支持word03的方法獲取圖片 if (file.getPath().endsWith(".xls")) { maplist = getPictures((HSSFSheet) sheet); } try { printImg(maplist); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } //2.讀出的Excel中數據的內容 HSSFCell cell = null; for (int sheetIndex = 0; sheetIndex < wb.getNumberOfSheets(); sheetIndex++) { HSSFSheet st = wb.getSheetAt(sheetIndex); // 第一行為標題，不取 for (int rowIndex = ignoreRows; rowIndex <= st.getLastRowNum(); rowIndex++) { HSSFRow row = st.getRow(rowIndex); if (row == null) { continue; } int tempRowSize = row.getLastCellNum() + 1; if (tempRowSize > rowSize) { rowSize = tempRowSize; } String[] values = new String[rowSize]; Arrays.fill(values, ""); boolean hasValue = false; for (short columnIndex = 0; columnIndex <= row.getLastCellNum(); columnIndex++) { String value = ""; cell = row.getCell(columnIndex); if (cell != null) { // 注意：一定要設成這個，否則可能會出現亂碼 //cell.setEncoding(HSSFCell.ENCODING_UTF_16); switch (cell.getCellType()) { case HSSFCell.CELL_TYPE_STRING: value = cell.getStringCellValue(); break; case HSSFCell.CELL_TYPE_NUMERIC: if (HSSFDateUtil.isCellDateFormatted(cell)) { Date date = cell.getDateCellValue(); if (date != null) { value = new SimpleDateFormat("yyyy-MM-dd").format(date); } else { value = ""; } } else { value = new DecimalFormat("0").format(cell.getNumericCellValue()); } break; case HSSFCell.CELL_TYPE_FORMULA: // 導入時如果為公式生成的數據則無值 if (!cell.getStringCellValue().equals("")) { value = cell.getStringCellValue(); } else { value = cell.getNumericCellValue() + ""; } break; case HSSFCell.CELL_TYPE_BLANK: break; case HSSFCell.CELL_TYPE_ERROR: value = ""; break; case HSSFCell.CELL_TYPE_BOOLEAN: value = (cell.getBooleanCellValue() == true ? "Y" : "N"); break; default: value = ""; } } if (columnIndex == 0 && value.trim().equals("")) { break; } values[columnIndex] = rightTrim(value); hasValue = true; } if (hasValue) { result.add(values); } } } in.close(); String[][] returnArray = new String[result.size()][rowSize]; for (int i = 0; i < returnArray.length; i++) { returnArray[i] = (String[]) result.get(i); } return returnArray; } /** * 去掉字符串右邊的空格 * @param str 要處理的字符串 * @return 處理后的字符串 */ public static String rightTrim(String str) { if (str == null) { return ""; } int length = str.length(); for (int i = length - 1; i >= 0; i--) { if (str.charAt(i) != 0x20) { break; } length--; } return str.substring(0, length); } /** * 獲取圖片和位置 (xls)測試過 * @param sheet * @return * @throws IOException */ public static Map<String, HSSFPictureData> getPictures(HSSFSheet sheet) throws IOException { Map<String, HSSFPictureData> map = new HashMap<String, HSSFPictureData>(); List<HSSFShape> list = sheet.getDrawingPatriarch().getChildren(); for (HSSFShape shape : list) { if (shape instanceof HSSFPicture) { HSSFPicture picture = (HSSFPicture) shape; HSSFClientAnchor cAnchor = (HSSFClientAnchor) picture.getAnchor(); HSSFPictureData pdata = picture.getPictureData(); String key = cAnchor.getRow1() + "-" + cAnchor.getCol1(); // 行號-列號 map.put(key, pdata); } } return map; } //圖片寫出 public static void printImg(Map<String, HSSFPictureData> maplist) throws IOException { //for (Map<String, PictureData> map : sheetList) { Object key[] = maplist.keySet().toArray(); for (int i = 0; i < maplist.size(); i++) { // 獲取圖片流 HSSFPictureData pic = maplist.get(key[i]); // 獲取圖片索引 String picName = key[i].toString(); byte[] data = pic.getData(); //圖片保存路徑 FileOutputStream out = new FileOutputStream("D:\\img\\pic" + picName + ".jpg"); out.write(data); out.close(); } // } } }