利用POI获取Excel中图片和图片位置

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

转自：http://blog.csdn.net/delongcpp/article/details/8833995

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：

[java] view plaincopy

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();

}

}

}

}