Struts2 Excel导入，导出！支持hashMap和Model作为参数

导入包
dom4j-1.6.1.jar
poi-3.9-20121203.jar
poi-ooxml-3.9-20121203.jar
poi-ooxml-schemas-3.9-20121203.jar
stax-api-1.0.1.jar
xmlbeans-2.3.0.jar
------------Excel导出------------------
Excel接口类

package com.XXX.lib.global.excel;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;

import com.XXXX.lib.fintface.IdentiIntface;

public interface ExcelObjIntface {
	/**
	 * excel下载
	 */
	public void excelDownLoad();
	/**
	 * 创建一个Excel
	 * @return
	 */
	public Workbook creatWorkBook();
	/**
	 * 创建一个sheet数组
	 * @param sheetNames
	 * @return
	 */
	public ArrayList<Sheet> creatSheet(ArrayList<String> sheetNames);
	/**
	 * 创建一个sheet
	 * @param sheetName
	 * @return
	 */
	public Sheet creatSheet(String sheetName);
	/**
	 * 创建一个简单头部
	 * @param sheet
	 * @param headValues
	 * @return
	 */
	public int creatSheetHeads(Sheet sheet,List<String> headValues);
	/**
	 * 根据HashMap生成数据
	 * @param sheet sheet
	 * @param cellValues
	 * @return
	 */
	public int creatSheetCellsByMap(Sheet sheet, List<Map<Object, Object>> cellValues);
	/**
	 * 根据模型生成数据
	 * @param sheet sheet
	 * @param model 模型列表
	 * @return 生成最后一条数据所在的行数
	 */
	public int creatSheetCellsByModel(Sheet sheet,List<IdentiIntface> model);
	/**
	 * 结束并生成Excel
	 * @param ExcelName，Excel的名称
	 */
	public void finishWorkBook(String ExcelName);
	
	
	
	/**
	 * 获得一个workBook;
	 * @param ExcelFullName
	 * @return
	 */
	public Workbook getReadExcel(String ExcelFullName);
	/**
	 * 获得一个sheet
	 * @param readwb
	 * @return
	 */
	public Sheet getReadSheet(int sheetAt);
	/**
	 * 获得一个制定的值
	 * @param sheet
	 * @param row
	 * @param cell
	 * @return
	 */
	public String getReadCellValue(Sheet sheet,int rowNum,int cellNum);
	
	
	public void init();
}

Excel抽象类

package com.XXX.lib.global.excel;

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

import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.Font;
import org.apache.poi.ss.usermodel.IndexedColors;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.usermodel.WorkbookFactory;

import com.XXX.lib.fintface.IdentiIntface;
import com.XXX.lib.global.constant.ExcelConstant;
import com.XXX.lib.global.util.ClassUtil;

/**
 * http://poi.apache.org/spreadsheet/quick-guide.html#NewSheet
 * Excel父类,抽象类
 */
public abstract class ExcelObjAbstract implements ExcelObjIntface{
	protected Workbook wb;
	private Workbook readwb;
	private List<Object> heads;
	private int startCols;//输出开始列
	private int startRows;//输出开始行
	private int headHeight;//设置头部高度
	private int bodyHeight;//设置身体高度
	private String Suffix;
	public ExcelObjAbstract(){
		this.excelDownLoad();
	}
	@Override
	public ArrayList<Sheet> creatSheet(ArrayList<String> sheetNames) {
		ArrayList<Sheet> sheetArray = new ArrayList<Sheet>();
		for (String sheetName : sheetNames) {
			Sheet tmpsheet = wb.createSheet(sheetName);
			sheetArray.add(tmpsheet);
		}
		return sheetArray;
	}
	@Override
	public Sheet creatSheet(String sheetName) {
		Sheet sheet = wb.createSheet(sheetName);
		return sheet;
	}
	@Override
	public int creatSheetHeads(Sheet sheet, List<String> headValues) {
		HashMap<String, CellStyle> styles = this.headStyle();
		heads = new ArrayList<Object>();
		Row row = sheet.createRow(startRows);//第一行
		if(headHeight!=0){
			row.setHeight((short)headHeight);
		}
		for(int i=0;i<headValues.size();i++) {
			String[] keys = headValues.get(i).split(",");
			heads.add(keys[0]);//把列名放到集合中
			Cell cell = row.createCell(i+startCols);
			cell.setCellStyle(styles.get("headBlack4"));  
			if(keys.length>=2){//第二项存在[并且语言为中文]
				cell.setCellValue(keys[1]);
			}
//			else if(keys.length>=3){//第三项存在[并且语言为韩文]
//				cell.setCellValue(keys[2]);
//			}
			if(keys.length>=4){//第四项存在,就设置列宽[注:第四个字段为最大字符串长度]
				sheet.setColumnWidth(i+startCols, Integer.parseInt(keys[3])*256);
			}
			//默认
		}
		return headValues.size();
	}
	@Override
	public int creatSheetCellsByMap(Sheet sheet, List<Map<Object, Object>> cellValues) {
		HashMap<String, CellStyle> styles = this.bodyStyle();
		for(int i=0;i<cellValues.size();i++) {
			Row row = sheet.createRow(startRows+i+1);//因为第一行为题目，故从第二行开始输出正文
			if(bodyHeight!=0){
				row.setHeight((short)bodyHeight);
			}
			for(int j=0;j<cellValues.get(i).size();j++) {
				Cell cell = row.createCell(j);
				Object eValue = cellValues.get(i).get(heads.get(j));
				if(eValue==null){
					eValue = "  ";
				}
				cell.setCellValue(eValue.toString());
				cell.setCellStyle(styles.get("bodyBlack4"));
			}
		}
		return cellValues.size();
	}
	@Override
	public int creatSheetCellsByModel(Sheet sheet,List<IdentiIntface> modelList){
		HashMap<String, CellStyle> styles = this.bodyStyle();
		for(int i=0;i<modelList.size();i++) {
			Row row = sheet.createRow(startRows+i+1);//因为第一行为题目，故从第二行开始输出正文
			if(bodyHeight!=0){
				row.setHeight((short)bodyHeight);
			}
			for(int j=0;j<heads.size();j++) {
				Cell cell = row.createCell(startCols+j);
				//通过字符串获得属性值
				Object eValue = ClassUtil.getFieldValueByName(heads.get(j).toString(),modelList.get(i));
				if(eValue==null){
					eValue = "  ";
				}
				cell.setCellValue(eValue.toString());
				cell.setCellStyle(styles.get("bodyBlack4"));
			}
		}
		return modelList.size();
	}
	@Override
	public void finishWorkBook(String ExcelName) {
		String realExcelName = ExcelConstant.DEFAULT_OUT_PATH+ExcelName+Suffix;
		try {
			 FileOutputStream fileOut = new FileOutputStream(realExcelName);
			 wb.write(fileOut);
			 fileOut.close();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
	//内容样式集合
	private HashMap<String, CellStyle> bodyStyle(){
		 HashMap<String, CellStyle> styles = new HashMap<String, CellStyle>();
		//内容样式一： 四个边框 黑色,无底色,上下居中，左右居中
	    CellStyle style = wb.createCellStyle();
	    //设置字体
        Font headFont = wb.createFont();
        headFont.setFontHeightInPoints((short)9);
        headFont.setColor(IndexedColors.BLACK.getIndex());
        headFont.setFontName("宋体");
        style.setFont(headFont);
        //设置边框
	    style.setBorderBottom(CellStyle.BORDER_THIN);
	    style.setBottomBorderColor(IndexedColors.BLACK.getIndex());
	    style.setBorderLeft(CellStyle.BORDER_THIN);
	    style.setLeftBorderColor(IndexedColors.BLACK.getIndex());
	    style.setBorderRight(CellStyle.BORDER_THIN);
	    style.setRightBorderColor(IndexedColors.BLACK.getIndex());
	    style.setBorderTop(CellStyle.BORDER_THIN);
	    style.setTopBorderColor(IndexedColors.BLACK.getIndex());
	    //设置居中
	    style.setAlignment(CellStyle.ALIGN_CENTER);
	    style.setVerticalAlignment(CellStyle.VERTICAL_CENTER);
	    styles.put("bodyBlack4", style);
	  
	    return styles;
	}
	//头部样式集合
	private HashMap<String, CellStyle> headStyle(){
		HashMap<String, CellStyle> styles = new HashMap<String, CellStyle>();
		//	头部样式一： 四个边框 黑色,深灰色底色,上下居中，左右居中
	    CellStyle style = wb.createCellStyle();
	    //设置字体
        Font headFont = wb.createFont();
        headFont.setFontHeightInPoints((short)11);
        headFont.setBoldweight(Font.BOLDWEIGHT_BOLD);
        headFont.setColor(IndexedColors.BLACK.getIndex());
        headFont.setFontName("宋体");
        style.setFont(headFont);
	    //设置边框
	    style.setBorderBottom(CellStyle.BORDER_THIN);
	    style.setBottomBorderColor(IndexedColors.BLACK.getIndex());
	    style.setBorderLeft(CellStyle.BORDER_THIN);
	    style.setLeftBorderColor(IndexedColors.BLACK.getIndex());
	    style.setBorderRight(CellStyle.BORDER_THIN);
	    style.setRightBorderColor(IndexedColors.BLACK.getIndex());
	    style.setBorderTop(CellStyle.BORDER_THIN);
	    style.setTopBorderColor(IndexedColors.BLACK.getIndex());
	    //设置背景颜色
        style.setFillForegroundColor(IndexedColors.GREY_25_PERCENT.getIndex());
        style.setFillPattern(CellStyle.SOLID_FOREGROUND);
        //设置居中      
	    style.setAlignment(CellStyle.ALIGN_CENTER);
	    style.setVerticalAlignment(CellStyle.VERTICAL_CENTER);
	    styles.put("headBlack4", style);
	    
	    return styles;
	}
	@Override
	public Workbook getReadExcel(String ExcelFullName) {
		try{
			InputStream inp = new FileInputStream(ExcelFullName);
			readwb = WorkbookFactory.create(inp);
		}catch (Exception e) {
			e.printStackTrace();
		}
		return readwb;
	}
	@Override
	public Sheet getReadSheet(int sheetAt) {
		return readwb.getSheetAt(sheetAt);
	}
	@Override
	public String getReadCellValue(Sheet sheet, int rowNum, int cellNum) {
		Row row = sheet.getRow(rowNum);
		Cell cell = row.getCell(cellNum);
		return cell.toString();
	}
	@Override
	public void excelDownLoad() {
		this.init();
		this.creatWorkBook();
		this.setStartColsRows(1, 1);
	}
	
	/**
	 * 集中设置开始行列
	 * @param startCols
	 * @param startRows
	 */
	public void setStartColsRows(int startCols,int startRows){
		this.setStartCols(startCols);
		this.setStartRows(startRows);
	}
	/**
	 * 集中设置高度
	 * @param headHeight
	 * @param bodyHeight
	 */
	public void setHeadBodyHeight(int headHeight,int bodyHeight){
		this.setHeadHeight(headHeight);
		this.setBodyHeight(bodyHeight);
	}
	public int getStartCols() {
		return startCols;
	}
	public void setStartCols(int startCols) {
		this.startCols = startCols;
	}
	public int getStartRows() {
		return startRows;
	}
	public void setStartRows(int startRows) {
		this.startRows = startRows;
	}
	public String getSuffix() {
		return Suffix;
	}
	public void setSuffix(String suffix) {
		Suffix = suffix;
	}
	public int getHeadHeight() {
		return headHeight;
	}
	public void setHeadHeight(int headHeight) {
		this.headHeight = headHeight;
	}
	public int getBodyHeight() {
		return bodyHeight;
	}
	public void setBodyHeight(int bodyHeight) {
		this.bodyHeight = bodyHeight;
	}
	
	
}

Excel2007

package com.XXX.lib.global.excel;

import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

public class Excel2007 extends ExcelObjAbstract{
	public Excel2007(){
		super();
	}
	
	@Override
	public Workbook creatWorkBook() {
		wb = new XSSFWorkbook();
		return wb;
	}
	public void init(){
		super.setSuffix(".xlsx");
	}
	
}

Excel2003

package com.XXX.lib.global.excel;

import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Workbook;

public class Excel2003  extends ExcelObjAbstract{
	public Excel2003(){
		super();
	}
	
	@Override
	public Workbook creatWorkBook() {
		wb = new HSSFWorkbook();
		return wb;
	}
	public void init(){
		super.setSuffix(".xls");
	}
	
}

调用

		String fj = excelDate.format(new Date());
		List<String> headMas= new ArrayList<String>();
		headMas.add("lodging_id,xx,i,20");
		headMas.add("room_count,xx,i");
		String fileName = "xx"+fj;
		Excel2007 excel2007 = new Excel2007();
		Sheet sheet = excel2007.creatSheet("xx");
		excel2007.creatSheetHeads(sheet,headMas);
		excel2007.creatSheetCellsByModel(sheet, result);
		excel2007.finishWorkBook(fileName);
		

------------Excel导入------------------
上传Excel文件

	public String fileUpload(){
	 	File[] srcfiles = updExcel;
		if( srcfiles != null ){
			for(int i=0;i<srcfiles.length;i++){
				int fileId = lodgService.seqkey();//唯一id
		        SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd"); 
		        String tmpStr = sdf.format(new Date());
			    String tmpYyyymm = tmpStr;
				String fileName = updExcelFileName[i];//文件名称
				String extension = FileUtil.getFileExtension(fileName);//类型
				if(extension.equals(".xlsm")){
					String newFileName = "xxxx"+fileId+".xlsm";//新文件名
					String filePath =  Constant.FILE_DEFAULT_UPLOAD + tmpYyyymm + "_" + newFileName;
					File file = new File(filePath);
					FileUtil.copy(updExcel[i], file);
					if(excelInAppoint(filePath)){
						this.setInfoString("Excel导入成功");
					}else{
						this.setInfoString("Excel导入失败");
					}
				}
			}
		}
		search();
		return "fileUpload";
	}

读取Excel文件

	private boolean excelInAppoint(String filePath){
		Excel2007 excel2007 = new Excel2007();
		excel2007.getReadExcel(filePath);
		Sheet sheet = excel2007.getReadSheet(0);
		//TODO 生成服务器端校验码
		String testStr = excel2007.getReadCellValue(sheet, 1, 2);//获得客户端校验码
		String[] testArr = testStr.split("-");
        SimpleDateFormat sdf=new SimpleDateFormat("yyyyMMdd"); 
        String tmpStr = sdf.format(new Date());
        int totleCols = Integer.parseInt(testArr[4]);
		if( tmpStr.equals(testArr[0]) && testArr[1].equals("0")){
			for(int i=4;i<totleCols;i++){//遍历所有行
				//TODO 插入数据
				lodgModel.setLodging_id(excel2007.getReadCellValue(sheet, i, 1));
				lodgModel.setAp_date(excel2007.getReadCellValue(sheet, i, 2));
				lodgModel.setAp_code(excel2007.getReadCellValue(sheet, i, 3));
				lodgModel.setCuser(excel2007.getReadCellValue(sheet, i, 4));
				lodgModel.setStatus(excel2007.getReadCellValue(sheet, i, 5));
				lodgModel.setEmpno(excel2007.getReadCellValue(sheet, i, 6));
				empInto();
			}
			return true;
		}else{
			return false;
		}
	}