利用POI获取Excel中图片和图片位置（支持excel2003or2007多sheet）

利用POI获取Excel中图片和图片位置（支持excel2003or2007多sheet）

第三方JAR包(apache下载POI即可)：

poi-3.9-20121203.jar
dom4j-1.6.1.jar
poi-ooxml-3.9-20121203.jar
poi-ooxml-schemas-3.9-20121203.jar
poi-scratchpad-3.9-20121203.jar
stax-api-1.0.1.jar
xmlbeans-2.3.0.jar

测试代码：

package com;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.poi.POIXMLDocumentPart;
import org.apache.poi.hssf.usermodel.HSSFClientAnchor;
import org.apache.poi.hssf.usermodel.HSSFPicture;
import org.apache.poi.hssf.usermodel.HSSFPictureData;
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.openxml4j.exceptions.InvalidFormatException;
import org.apache.poi.ss.usermodel.PictureData;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.usermodel.WorkbookFactory;
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.XSSFShape;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.openxmlformats.schemas.drawingml.x2006.spreadsheetDrawing.CTMarker;

/**
* @since 2013-04-22

* @author Gerrard

* 获取excel中 图片，并得到图片位置，支持03 07 多sheet

*/
public class GetImgFromExcel {

/**
* @param args
* @throws IOException
* @throws InvalidFormatException
*/
public static void main(String[] args) throws InvalidFormatException, IOException {

// 创建文件
File file = new File("model/test.xls");

// 创建流
InputStream input = new FileInputStream(file);

// 获取文件后缀名
String fileExt =  file.getName().substring(file.getName().lastIndexOf(".") + 1);

// 创建Workbook
Workbook wb = null;

// 创建sheet
Sheet sheet = null;

//根据后缀判断excel 2003 or 2007+
if (fileExt.equals("xls")) {
wb = (HSSFWorkbook) WorkbookFactory.create(input);
} else {
wb = new XSSFWorkbook(input);
}

//获取excel sheet总数
int sheetNumbers = wb.getNumberOfSheets();

// sheet list
List<Map<String, PictureData>> sheetList = new ArrayList<Map<String, PictureData>>();

// 循环sheet
for (int i = 0; i < sheetNumbers; i++) {

sheet = wb.getSheetAt(i);
// map等待存储excel图片
Map<String, PictureData> sheetIndexPicMap;

// 判断用07还是03的方法获取图片
if (fileExt.equals("xls")) {
sheetIndexPicMap = getSheetPictrues03(i, (HSSFSheet) sheet, (HSSFWorkbook) wb);
} else {
sheetIndexPicMap = getSheetPictrues07(i, (XSSFSheet) sheet, (XSSFWorkbook) wb);
}
// 将当前sheet图片map存入list
sheetList.add(sheetIndexPicMap);
}

printImg(sheetList);

}

/**
* 获取Excel2003图片
* @param sheetNum 当前sheet编号
* @param sheet 当前sheet对象
* @param workbook 工作簿对象
* @return Map key:图片单元格索引（0_1_1）String，value:图片流PictureData
* @throws IOException
*/
public static Map<String, PictureData> getSheetPictrues03(int sheetNum,
HSSFSheet sheet, HSSFWorkbook workbook) {

Map<String, PictureData> sheetIndexPicMap = new HashMap<String, PictureData>();
List<HSSFPictureData> pictures = workbook.getAllPictures();
if (pictures.size() != 0) {
for (HSSFShape shape : sheet.getDrawingPatriarch().getChildren()) {
HSSFClientAnchor anchor = (HSSFClientAnchor) shape.getAnchor();
if (shape instanceof HSSFPicture) {
HSSFPicture pic = (HSSFPicture) shape;
int pictureIndex = pic.getPictureIndex() - 1;
HSSFPictureData picData = pictures.get(pictureIndex);
String picIndex = String.valueOf(sheetNum) + "_"
+ String.valueOf(anchor.getRow1()) + "_"
+ String.valueOf(anchor.getCol1());
sheetIndexPicMap.put(picIndex, picData);
}
}
return sheetIndexPicMap;
} else {
return null;
}
}

/**
* 获取Excel2007图片
* @param sheetNum 当前sheet编号
* @param sheet 当前sheet对象
* @param workbook 工作簿对象
* @return Map key:图片单元格索引（0_1_1）String，value:图片流PictureData
*/
public static Map<String, PictureData> getSheetPictrues07(int sheetNum,
XSSFSheet sheet, XSSFWorkbook workbook) {
Map<String, PictureData> sheetIndexPicMap = new HashMap<String, PictureData>();

for (POIXMLDocumentPart dr : sheet.getRelations()) {
if (dr instanceof XSSFDrawing) {
XSSFDrawing drawing = (XSSFDrawing) dr;
List<XSSFShape> shapes = drawing.getShapes();
for (XSSFShape shape : shapes) {
XSSFPicture pic = (XSSFPicture) shape;
XSSFClientAnchor anchor = pic.getPreferredSize();
CTMarker ctMarker = anchor.getFrom();
String picIndex = String.valueOf(sheetNum) + "_"
+ ctMarker.getRow() + "_" + ctMarker.getCol();
sheetIndexPicMap.put(picIndex, pic.getPictureData());
}
}
}

return sheetIndexPicMap;
}

public static void printImg(List<Map<String, PictureData>> sheetList) throws IOException {

for (Map<String, PictureData> map : sheetList) {
Object key[] = map.keySet().toArray();
for (int i = 0; i < map.size(); i++) {
// 获取图片流
PictureData pic = map.get(key[i]);
// 获取图片索引
String picName = key[i].toString();
// 获取图片格式
String ext = pic.suggestFileExtension();

byte[] data = pic.getData();

FileOutputStream out = new FileOutputStream("D:\\pic" + picName + "." + ext);
out.write(data);
out.close();
}
}

}

}