导出Excel

utils工具类:
package com.sprucetec.tms.controller.utils;

import org.apache.poi.hssf.usermodel.*;
import org.apache.poi.hssf.util.HSSFColor;
import org.apache.poi.ss.util.CellRangeAddress;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;

/**
 * 导出Excel公共方法
 * @version 1.0
 *
 * @author wangcp
 *
 */
public class ExportExcel {

    //显示的导出表的标题
    private String title;
    //导出表的列名
    private String[] rowName ;
    //请求返回参数
    private HttpServletResponse response;

    private List<Object[]>  dataList = new ArrayList<Object[]>();
    private HttpServletRequest request;
    private String selectedCityName;
    private String month;

    //构造方法，传入要导出的数据
    public ExportExcel(String title, String[] rowName, List<Object[]>  dataList, HttpServletResponse response,HttpServletRequest request,String selectedCityName,String month){
        this.dataList = dataList;
        this.rowName = rowName;
        this.title = title;
        this.response = response;
        this.request = request;
        this.selectedCityName = selectedCityName;
        this.month = month;
    }



    /*
     * 导出数据
     * */
    public void export() throws Exception{
        String agent = request.getHeader("USER-AGENT");
        boolean isIE = (null != agent && -1 != agent.indexOf("MSIE") || null != agent
                && -1 != agent.indexOf("Trident")); //IE
        try{
            HSSFWorkbook workbook = new HSSFWorkbook();                   // 创建工作簿对象
            HSSFSheet sheet = workbook.createSheet(title);             // 创建工作表

            // 产生表格标题行
            HSSFRow rowm = sheet.createRow(0);
            HSSFCell cellTiltle = rowm.createCell(0);

            //sheet样式定义【getColumnTopStyle()/getStyle()均为自定义方法 - 在下面  - 可扩展】
            HSSFCellStyle columnTopStyle = this.getColumnTopStyle(workbook);//获取列头样式对象
            HSSFCellStyle style = this.getStyle(workbook);             //单元格样式对象

            sheet.addMergedRegion(new CellRangeAddress(0, 1, 0, 2));
            cellTiltle.setCellStyle(columnTopStyle);
            cellTiltle.setCellValue("管理月份:"+month);
            // 定义所需列数
            int columnNum = rowName.length;
            HSSFRow rowRowName = sheet.createRow(2);            // 在索引2的位置创建行(最顶端的行开始的第二行)

            // 将列头设置到sheet的单元格中
            for(int n=0;n<columnNum;n++){
                HSSFCell  cellRowName = rowRowName.createCell(n);           //创建列头对应个数的单元格
                cellRowName.setCellType(HSSFCell.CELL_TYPE_STRING);             //设置列头单元格的数据类型
                HSSFRichTextString text = new HSSFRichTextString(rowName[n]);
                cellRowName.setCellValue(text);                            //设置列头单元格的值
                cellRowName.setCellStyle(columnTopStyle);                 //设置列头单元格样式
            }

            //将查询出的数据设置到sheet对应的单元格中
            for(int i=0;i<dataList.size();i++){

                Object[] obj = dataList.get(i);//遍历每个对象
                HSSFRow row = sheet.createRow(i+3);//创建所需的行数

                for(int j=0; j<obj.length; j++){
                    HSSFCell  cell = null;   //设置单元格的数据类型
                    if(j == 0){
                        cell = row.createCell(j,HSSFCell.CELL_TYPE_NUMERIC);
                        cell.setCellValue(i+1);
                    }else{
                        cell = row.createCell(j,HSSFCell.CELL_TYPE_STRING);
                        if(!"".equals(obj[j]) && obj[j] != null){
                            cell.setCellValue(obj[j].toString());                 //设置单元格的值
                        }else {
                            cell.setCellValue("");
                        }
                    }
                    cell.setCellStyle(style);                          //设置单元格样式
                }
            }
            //让列宽随着导出的列长自动适应
            for (int colNum = 0; colNum < columnNum; colNum++) {
                int columnWidth = sheet.getColumnWidth(colNum) / 256;
                for (int rowNum = 0; rowNum < sheet.getLastRowNum(); rowNum++) {
                    HSSFRow currentRow;
                    //当前行未被使用过
                    if (sheet.getRow(rowNum) == null) {
                        currentRow = sheet.createRow(rowNum);
                    } else {
                        currentRow = sheet.getRow(rowNum);
                    }
                    if (currentRow.getCell(colNum) != null) {
                        HSSFCell currentCell = currentRow.getCell(colNum);
                        if (currentCell.getCellType() == HSSFCell.CELL_TYPE_STRING) {
                            int length = 0;
                            try {
                                length = currentCell.getStringCellValue().getBytes().length;
                            } catch (Exception e) {
                            }
                            if (columnWidth < length) {
                                columnWidth = length;
                            }
                        }
                    }
                }
                if(colNum == 0){
                    sheet.setColumnWidth(colNum, (columnWidth-2) * 256);
                }else{
                    sheet.setColumnWidth(colNum, (columnWidth+4) * 256);
                }
            }
            if(workbook !=null){
                try
                {
                    String excelFileName = "管理费用-"+selectedCityName+"-"+month+".xls";
                    String fileName ="";
                    if( isIE ){
                        fileName = java.net.URLEncoder.encode(excelFileName,"UTF8");
                    }else{
                        fileName = new String(excelFileName.getBytes("UTF-8"), "ISO-8859-1");
                    }
                    String headStr = "attachment; filename="" + fileName + """;
                    response.setContentType("APPLICATION/OCTET-STREAM");
                    response.setHeader("Content-Disposition", headStr);
                    OutputStream out = response.getOutputStream();
                    workbook.write(out);
                }
                catch (IOException e)
                {
                    e.printStackTrace();
                }
            }

        }catch(Exception e){
            e.printStackTrace();
        }

    }

    /*
     * 列头单元格样式
     */
    public HSSFCellStyle getColumnTopStyle(HSSFWorkbook workbook) {

        // 设置字体
        HSSFFont font = workbook.createFont();
        //设置字体大小
        font.setFontHeightInPoints((short)11);
        //字体加粗
        font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
        //设置字体名字
        font.setFontName("Courier New");
        //设置样式;
        HSSFCellStyle style = workbook.createCellStyle();
        //设置底边框;
        style.setBorderBottom(HSSFCellStyle.BORDER_THIN);
        //设置底边框颜色;
        style.setBottomBorderColor(HSSFColor.BLACK.index);
        //设置左边框;
        style.setBorderLeft(HSSFCellStyle.BORDER_THIN);
        //设置左边框颜色;
        style.setLeftBorderColor(HSSFColor.BLACK.index);
        //设置右边框;
        style.setBorderRight(HSSFCellStyle.BORDER_THIN);
        //设置右边框颜色;
        style.setRightBorderColor(HSSFColor.BLACK.index);
        //设置顶边框;
        style.setBorderTop(HSSFCellStyle.BORDER_THIN);
        //设置顶边框颜色;
        style.setTopBorderColor(HSSFColor.BLACK.index);
        //在样式用应用设置的字体;
        style.setFont(font);
        //设置自动换行;
        style.setWrapText(false);
        //设置水平对齐的样式为居中对齐;
        style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
        //设置垂直对齐的样式为居中对齐;
        style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);

        return style;

    }

    /*
   * 列数据信息单元格样式
   */
    public HSSFCellStyle getStyle(HSSFWorkbook workbook) {
        // 设置字体
        HSSFFont font = workbook.createFont();
        //设置字体大小
        //font.setFontHeightInPoints((short)10);
        //字体加粗
        //font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
        //设置字体名字
        font.setFontName("Courier New");
        //设置样式;
        HSSFCellStyle style = workbook.createCellStyle();
        //设置底边框;
        style.setBorderBottom(HSSFCellStyle.BORDER_THIN);
        //设置底边框颜色;
        style.setBottomBorderColor(HSSFColor.BLACK.index);
        //设置左边框;
        style.setBorderLeft(HSSFCellStyle.BORDER_THIN);
        //设置左边框颜色;
        style.setLeftBorderColor(HSSFColor.BLACK.index);
        //设置右边框;
        style.setBorderRight(HSSFCellStyle.BORDER_THIN);
        //设置右边框颜色;
        style.setRightBorderColor(HSSFColor.BLACK.index);
        //设置顶边框;
        style.setBorderTop(HSSFCellStyle.BORDER_THIN);
        //设置顶边框颜色;
        style.setTopBorderColor(HSSFColor.BLACK.index);
        //在样式用应用设置的字体;
        style.setFont(font);
        //设置自动换行;
        style.setWrapText(false);
        //设置水平对齐的样式为居中对齐;
        style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
        //设置垂直对齐的样式为居中对齐;
        style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);

        return style;

    }
}
Controller控制层调用:

@RequestMapping("/export")
public void export(ManageFeeVo vo, HttpServletRequest request, HttpServletResponse response){
    //搜索参数
    Map<String,Object> paramMap = new HashMap<String,Object>();
    paramMap.put("userName", vo.getUserName());
    paramMap.put("identifyNumber", vo.getIdentifyNumber());
    paramMap.put("userSource", "undefined".equals(vo.getUserSource())?null:vo.getUserSource());
    paramMap.put("transportCode", "undefined".equals(vo.getTransportCode())?null:vo.getTransportCode());
    paramMap.put("enrollStatus", EnrollType.WORK);
    String month = vo.getDeliveryMonth();
    if(StringUtils.isNotBlank(vo.getDeliveryMonth())){
        paramMap = distributeFeeService.handlerMonth(paramMap, month);
    }else {
        month = sdf.format(new Date()).substring(0,sdf.format(new Date()).lastIndexOf("-"));
        paramMap = distributeFeeService.handlerMonth(paramMap, month);
    }

    PageCondition condition = new PageCondition(20, 1);
    condition.setDisablePagePlugin(true);//不分页
    Long cityId = this.getCurrentCityId();
    Page<ManageFee> pageInfo =  distributeFeeService.queryManageFeeList(cityId,condition, paramMap);
    List<ManageFee> rows = pageInfo.getItems();
    List<Object[]>  dataList = new ArrayList<Object[]>();
    Object[] objs = null;
    for (int i=0;i<rows.size();i++){
        ManageFee fee = rows.get(i);
        objs = new Object[vo.getExcelTitles().length];
        objs[0]=i+1;
        objs[1]=fee.getUserName();
        objs[2]=fee.getIdentifyNumber();
        objs[3]=fee.getUserSourceName();
        objs[4]=fee.getTransportName();
        objs[5]=month;
        objs[6]=fee.getTotalAmount()==null?"0.00":fee.getTotalAmount().toPlainString();
        objs[7]=fee.getRewardFullTime()==null?"0.00":fee.getRewardFullTime().toPlainString();
        objs[8]=fee.getRewardRecommend()==null?"0.00":fee.getRewardRecommend().toPlainString();
        objs[9]=fee.getRewardOnlinePay()==null?"0.00":fee.getRewardOnlinePay().toPlainString();
        objs[10]=fee.getRewardStarsDriver()==null?"0.00":fee.getRewardStarsDriver().toPlainString();
        objs[11]=fee.getRewardClassLeader()==null?"0.00":fee.getRewardClassLeader().toPlainString();
        objs[12]=fee.getOtherAmount()==null?"0.00":fee.getOtherAmount().toPlainString();
        objs[13]=fee.getRemark();
        dataList.add(objs);
    }
    ExportExcel exportExcel = new ExportExcel("管理费用",vo.getExcelTitles(),dataList,response,request,vo.getSelectedName(),month);
    try {
        exportExcel.export();
    } catch (Exception e) {
        e.printStackTrace();
    }
}