java导出excel表格

时间：2021-01-01 21:29:27

java导出excel表格：

1、导入jar包

<dependency>

            <groupId>org.apache.poi</groupId>

            <artifactId>poi</artifactId>

            <version>3.5-FINAL</version>

        </dependency>

2、编写工具类

package utils;

import org.apache.poi.hssf.usermodel.HSSFCell;

import org.apache.poi.hssf.usermodel.HSSFCellStyle;

import org.apache.poi.hssf.usermodel.HSSFRow;

import org.apache.poi.hssf.usermodel.HSSFSheet;

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

public class ExcelUtil {

    public static HSSFWorkbook getHSSFWorkbook(String sheetName,String []title,String [][]values, HSSFWorkbook wb){

         // 第一步，创建一个webbook，对应一个Excel文件

        if(wb == null){

            wb = new HSSFWorkbook();

        }

        // 第二步，在webbook中添加一个sheet,对应Excel文件中的sheet

        HSSFSheet sheet = wb.createSheet(sheetName);

        // 第三步，在sheet中添加表头第0行,注意老版本poi对Excel的行数列数有限制short

        HSSFRow row = sheet.createRow(0);

        // 第四步，创建单元格，并设置值表头 设置表头居中

        HSSFCellStyle style = wb.createCellStyle();

        style.setAlignment(HSSFCellStyle.ALIGN_CENTER); // 创建一个居中格式  

        HSSFCell cell = null;

        //创建标题

        for(int i=0;i<title.length;i++){

            cell = row.createCell(i);

            cell.setCellValue(title[i]);

            cell.setCellStyle(style);

        }

        //创建内容

        for(int i=0;i<values.length;i++){

            row = sheet.createRow(i + 1);

            for(int j=0;j<values[i].length;j++){

                 row.createCell(j).setCellValue(values[i][j]);

            }

        }

       return wb;

    }

}

3、导入表格信息

package mvc.controller;

import java.io.OutputStream;

import java.io.UnsupportedEncodingException;

import java.text.ParseException;

import java.text.SimpleDateFormat;

import java.util.Calendar;

import java.util.Date;

import java.util.List;

import javax.annotation.Resource;

import javax.servlet.http.HttpServletResponse;

import mvc.model.Feedback;

import mvc.model.JResponse;

import mvc.model.apis.DownloadExcel;

import mvc.service.IAppInfoService;

import mvc.service.IBusinessService;

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

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestParam;

import org.springframework.web.bind.annotation.ResponseBody;

import com.prize.utils.StringUtil;

import utils.ExcelUtil;

@Controller

@RequestMapping(value="/excel/*")

public class ExcelController {

    @Resource

    private IAppInfoService appinfoService;

    @Resource

    private IBusinessService businessService;

    @RequestMapping(value = "exportfeedback")

    @ResponseBody

    public JResponse exportFeedBack(HttpServletResponse response,

            @RequestParam(value="query", required=false) String searchText,

            @RequestParam(value="type", required=false) String strType,

            @RequestParam(value="startDate", required=false) String startDate,

            @RequestParam(value="endDate", required=false) String endDate){

        String fileName = "反馈明细"+System.currentTimeMillis()+".xls"; //文件名

        String sheetName = "反馈明细";//sheet名

        String []title = new String[]{"Id","导航图标","反馈类型","内容","联系方式","应用Id","应用版本","反馈时间"};//标题

        List<Feedback> list = appinfoService.getAllFeedbackForExcel(searchText, strType, startDate, endDate);//内容list

        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

        String [][]values = new String[list.size()][];

        for(int i=0;i<list.size();i++){

            values[i] = new String[title.length];

            //将对象内容转换成string

            Feedback obj = list.get(i);

            values[i][0] = obj.getId()+"";

            values[i][1] = obj.getFiles();

            values[i][2] = obj.getFbType();

            values[i][3] = obj.getContent();

            values[i][4] = obj.getContactInfo();

            values[i][5] = obj.getAppId();

            values[i][6] = obj.getVersionName();

            values[i][7] = sdf.format(obj.getCreateTime());

        }

        HSSFWorkbook wb = ExcelUtil.getHSSFWorkbook(sheetName, title, values, null);

        //将文件存到指定位置

        try {

             this.setResponseHeader(response, fileName);

             OutputStream os = response.getOutputStream();

             wb.write(os);

             os.flush();

             os.close();

        } catch (Exception e) {

             e.printStackTrace();

        }

        return JResponse.success("ok");

    }

     public void setResponseHeader(HttpServletResponse response, String fileName) {

         try {

              try {

                   fileName = new String(fileName.getBytes(),"ISO8859-1");

              } catch (UnsupportedEncodingException e) {

                   // TODO Auto-generated catch block

                   e.printStackTrace();

              }

              response.setContentType("application/octet-stream;charset=ISO8859-1");

              response.setHeader("Content-Disposition", "attachment;filename="+ fileName);

              response.addHeader("Pargam", "no-cache");

              response.addHeader("Cache-Control", "no-cache");

         } catch (Exception ex) {

              ex.printStackTrace();

         }

    }

}
注意这里将 List<Feedback> list = appinfoService.getAllFeedbackForExcel(searchText, strType, startDate, endDate);//内容list 换成你自己的获取数据方法，将values二维数组导入util工具类方法中即可。

整体思路：将二维数组导入excel。

4、访问link即可，如：XXX/excel/exportfeedback
<button id="js-export" type="button" class="btn btn-primary">导出Excel</button>


$('#js-export').click(function(){

            window.location.href="/xxx/excel/exportfeedback?type="+$('#type').val()+"&startDate="+$('#table_start_date').val()+"&endDate="+$('#table_end_date').val();

        });

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