JAVA导出Excel封装

1、数据bean

/**
 * Excel Bean
 * @author rubekid
 *
 */
public class ExcelBean {

    private String name;

    private String sheetName;

    private String[] titles;

    private List<String[]> dataList;

    private boolean headBold = true;

    private int columnWidth = 6000;

    public ExcelBean(String name, String sheetName, String[] titles){
        this.name = name;
        this.sheetName = sheetName;
        this.titles = titles;
        this.dataList = new ArrayList<String[]>();
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getSheetName() {
        return sheetName;
    }

    public void setSheetName(String sheetName) {
        this.sheetName = sheetName;
    }

    public String[] getTitles() {
        return titles;
    }

    public void setTitles(String[] titles) {
        this.titles = titles;
    }

    public List<String[]> getDataList() {
        return dataList;
    }

    public void setDataList(List<String[]> dataList) {
        this.dataList = dataList;
    }

    public boolean isHeadBold() {
        return headBold;
    }

    public void setHeadBold(boolean headBold) {
        this.headBold = headBold;
    }

    public int getColumnWidth() {
        return columnWidth;
    }

    public void setColumnWidth(int columnWidth) {
        this.columnWidth = columnWidth;
    }

    public void add(String[] data){
        this.dataList.add(data);
    }

}

2、工具类

/**
 * excel 工具类
 * @author rubekid
 *
 */
public class ExcelUtils {

    public static void export( ExcelBean excelBean) throws Exception{
        HSSFWorkbook wb = new HSSFWorkbook();
        HSSFSheet sheet = wb.createSheet(excelBean.getSheetName());
        HSSFRow row = sheet.createRow(0);

        //设置样式
        HSSFCellStyle style = wb.createCellStyle();
        if(excelBean.isHeadBold()){
            HSSFFont headfont = wb.createFont();
            headfont.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
            style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
            style.setFont(headfont);
        }

        HSSFCell cell;
        String[] titles = excelBean.getTitles();
        for(int i=0; i < titles.length; i++){
            cell= row.createCell(i);
            cell.setCellValue(titles[i]);
            cell.setCellStyle(style);
            sheet.setColumnWidth(i, excelBean.getColumnWidth());
        }

        int rowNumber = 1;
        for(String[] data : excelBean.getDataList()){
            row = sheet.createRow(rowNumber ++ );
            for(int j=0; j<data.length; j ++){
                cell = row.createCell(j);
                cell.setCellValue(data[j]);
            }
        }

        HttpServletResponse response = Struts2Utils.getResponse();
        response.setContentType("application/octet-stream;charset=utf-8");
        response.setCharacterEncoding("utf-8");

        String filename = excelBean.getName();
        filename = new String(filename.replaceAll("\\s|;", "").getBytes("gbk"), "ISO8859-1");
        response.setContentType("application/vnd.ms-excel");
        response.setHeader("Content-disposition", "attachment;filename=" + filename);
        OutputStream ouputStream = response.getOutputStream();
        wb.write(ouputStream);
        ouputStream.flush();
        ouputStream.close();
    }

}

3、Demo

        String[] titles = {"姓名", "年龄", "性别", "身高"};
        ExcelBean excelBean = new ExcelBean("成员.xls", "少儿组", titles);
        excelBean.add(new String[]{"王仔", "10", "男", "120"});
        excelBean.add(new String[]{"王妞", "9", "女", "110"});
        ExcelUtils.export(excelBean);