POI导出

来源：互联网发布：红色摇滚知乎编辑：程序博客网时间：2024/05/21 00:46

待调用的方法

package com.itssky.util.poi;

import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.http.HttpServletResponse;

import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFFont;
import org.apache.poi.hssf.usermodel.HSSFPrintSetup;
import org.apache.poi.hssf.usermodel.HSSFRichTextString;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.util.CellRangeAddress;
import org.apache.poi.hssf.util.HSSFColor;

public class Export_Excel {

    /*
     * 导出数据
     * */
    public void export(String title,String[] rowName,List<Object[]> dataList,HttpServletResponse response,String excelName) throws Exception{
        try{
            HSSFWorkbook workbook = new HSSFWorkbook();                     // 创建工作簿对象

            // 创建工作表
            HSSFSheet sheet = workbook.createSheet(title);

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

            HSSFCellStyle columnTopStyle = this.getColumnTopStyle(workbook);


            HSSFCellStyle style = this.getStyle(workbook);                  //单元格样式对象

            sheet.addMergedRegion(new CellRangeAddress(0, 1, 0, (rowName.length-1)));
            cellTiltle.setCellStyle(columnTopStyle);
            cellTiltle.setCellValue(title);

            // 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_STRING);
//                        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
                        }
//                    }
                    cell.setCellStyle(style);                                   //设置单元格样式
                }
            }

            try {



            //让列宽随着导出的列长自动适应
            for (int colNum = 0; colNum < columnNum; colNum++) {
               System.out.println("colNum "+colNum);
                int columnWidth = sheet.getColumnWidth(colNum) / 256;
                for (int rowNum = 0; rowNum < sheet.getLastRowNum(); rowNum++) {
                   System.out.println("rowNum "+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 = currentCell.getStringCellValue().getBytes().length;
                            if (columnWidth < length) {
                                columnWidth = length;
                            }
                        }
                    }
                }
                if(colNum == 0){
                    sheet.setColumnWidth(colNum, (columnWidth+4) * 256);
                }else{
                    sheet.setColumnWidth(colNum, (columnWidth+4) * 256);
                }
            }

            sheet.setColumnWidth(0,15*256);

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

            OutputStream out = response.getOutputStream();

            if(workbook !=null){
                try
                {

                    response.reset();
                   response.setContentType("application/octet-stream;charset=UTF-8");
                   response.setHeader("Content-Disposition","attachment;filename="
                           + ""+java.net.URLEncoder.encode(excelName,"UTF-8")+"_"
                                   + String.valueOf(System.currentTimeMillis()).substring(4, 13)+".xls");


                    workbook.write(out);


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

                try {
                   out = response.getOutputStream();
                   workbook.write(out);
                   out.close();
                   response.flushBuffer();
               } catch (Exception e) {
                   e.printStackTrace();
               }

            }

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

    }


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

          //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;

    }

}

调用方法

String title = "座席满意度明细表";
       String[] rowsName = new String[]{"序号","平台","主叫号码","工号","通话开始时间","通话结束时间","通话时长(秒)","是否评价","评价结果"};
       List<Object[]> dataList = new ArrayList<Object[]>();
       Object[] objs = null;
       for (int i = 0; i < list.size(); i++) {
           Mydtj man = list.get(i);
            objs = new Object[rowsName.length];
            objs[0] = i;
            objs[1] = man.getCityname();
            objs[2] = man.getIntoperatorid();
            objs[3] = man.getStaffname();
            objs[4] = man.getTotaltimes();
           objs[5] = man.getCalltime();
           objs[6] = man.getCalltimepj();
           objs[7] = man.getSurveyTimes();
            objs[8] = man.getSatisfactionTimes();


            dataList.add(objs);

            if(i>60000){
               break;
            }

       }
       Export_Excel ex = new Export_Excel();
       try {
           String excelName="座席满意度明细表";
           ex.export(title, rowsName, dataList,response,excelName);
       } catch (Exception e) {
           e.printStackTrace();
       }

0 0