java导出数据EXCEL的工具类

一、springboot中可以使用

      pom文件

<dependency>
   <groupId>org.apache.poi</groupId>
   <artifactId>poi</artifactId>
   <version>4.1.1</version>
</dependency>

     工具类代码

import org.apache.poi.hssf.usermodel.*;
import org.apache.poi.ss.usermodel.HorizontalAlignment;
import org.apache.poi.ss.usermodel.VerticalAlignment;
import javax.servlet.http.HttpServletResponse;
import java.io.OutputStream;
import java.util.List;
import java.util.Map;


public class ObjectExcel {



    public static void buildExcelDocument(Map<String, Object> model,String fileName,HttpServletResponse response) throws Exception {
        HSSFWorkbook workbook = new HSSFWorkbook();
        fileName=fileName+DateUtils.getDateTime("HHmmss")+".xls";
        HSSFSheet sheet;
        HSSFCell cell;
        response.setContentType("application/octet-stream");
        response.setHeader("Content-Disposition", "attachment;filename="+new String(fileName.getBytes("utf-8"),"ISO-8859-1"));
        sheet = workbook.createSheet("sheet1");

        List<String> titles = (List<String>) model.get("titles");
        int len = titles.size();
        HSSFCellStyle headerStyle = workbook.createCellStyle(); //标题样式
        headerStyle.setAlignment(HorizontalAlignment.CENTER);

        headerStyle.setVerticalAlignment(VerticalAlignment.CENTER);
        HSSFFont headerFont = workbook.createFont();    //标题字体
        headerFont.setBold(true);
        headerFont.setFontHeightInPoints((short)11);
        headerStyle.setFont(headerFont);
        short width = 20,height=25*20;
        sheet.setDefaultColumnWidth(width);
        HSSFRow row = sheet.createRow(0);
        for(int i=0; i<len; i++){ //设置标题
            String title = titles.get(i);
            cell = row.createCell(i);
            cell.setCellStyle(headerStyle);
            cell.setCellValue(title);
        }
        sheet.getRow(0).setHeight(height);
        HSSFCellStyle contentStyle = workbook.createCellStyle(); //内容样式
        contentStyle.setAlignment(HorizontalAlignment.CENTER);
        List<Map<String,Object>> varList = (List<Map<String,Object>>) model.get("varList");
        int varCount = varList.size();
        for(int i=0; i<varCount; i++){
            HSSFRow rows = sheet.createRow(i+1);
            Map<String,Object> vpd = varList.get(i);
     /*       int j=0;
            for(String key : vpd.keySet()) {
                HSSFCell  cells = rows.createCell(j);
                cells.setCellStyle(contentStyle);
                cells.setCellValue(String.valueOf(vpd.get(key)));
                j++;
            }*/
           for(int j=0;j<len;j++){
                String varstr = vpd.get("var"+(j+1)) != null ? String.valueOf(vpd.get("var"+(j+1))) : "";
                HSSFCell  cells = rows.createCell(j);
                cells.setCellStyle(contentStyle);
                cells.setCellValue(varstr);
            }

        }
            OutputStream out = response.getOutputStream();
            workbook.write(out);
            out.close();
            workbook.close();
    }


}

 调用案例

 

二、基于springmvc

1.本工具类继承于  spring-webmvc-4.0.4jar文件心中的一个类   AbstractExcelView

2.代码如下

package com.skjd.util;

import java.util.Date;
import java.util.List;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
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.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.springframework.web.servlet.view.document.AbstractExcelView;

import com.skjd.util.PageData;
import com.skjd.util.Tools;
/**
* 导出到EXCEL
* 类名称：ObjectExcelView.java
* 类描述： 
* @author FH
* 作者单位： 
* 联系方式：
* @version 1.0
 */
public class ObjectExcelView extends AbstractExcelView{

    @Override
    protected void buildExcelDocument(Map<String, Object> model,
            HSSFWorkbook workbook, HttpServletRequest request,
            HttpServletResponse response) throws Exception {
        // TODO Auto-generated method stub
        Date date = new Date();
        String filename = Tools.date2Str(date, "yyyyMMddHHmmss");
        HSSFSheet sheet;
        HSSFCell cell;
        response.setContentType("application/octet-stream");
        response.setHeader("Content-Disposition", "attachment;filename="+filename+".xls");
        sheet = workbook.createSheet("sheet1");
        
        List<String> titles = (List<String>) model.get("titles");
        int len = titles.size();
        HSSFCellStyle headerStyle = workbook.createCellStyle(); //标题样式
        headerStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER);
        headerStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);
        HSSFFont headerFont = workbook.createFont();    //标题字体
        headerFont.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
        headerFont.setFontHeightInPoints((short)11);
        headerStyle.setFont(headerFont);
        short width = 20,height=25*20;
        sheet.setDefaultColumnWidth(width);
        for(int i=0; i<len; i++){ //设置标题
            String title = titles.get(i);
            cell = getCell(sheet, 0, i);
            cell.setCellStyle(headerStyle);
            setText(cell,title);
        }
        sheet.getRow(0).setHeight(height);
        
        HSSFCellStyle contentStyle = workbook.createCellStyle(); //内容样式
        contentStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER);
        List<PageData> varList = (List<PageData>) model.get("varList");
        int varCount = varList.size();
        for(int i=0; i<varCount; i++){
            PageData vpd = varList.get(i);
            for(int j=0;j<len;j++){
                String varstr = vpd.getString("var"+(j+1)) != null ? vpd.getString("var"+(j+1)) : "";
                cell = getCell(sheet, i+1, j);
                cell.setCellStyle(contentStyle);
                setText(cell,varstr);
            }
            
        }
        
    }

}

3.特此送上案例如下

/**
     * 导出数据
     * @return
     * @throws Exception 
     */
    @RequestMapping(value="/excel")
    public ModelAndView excel(Page page) throws Exception{
        logBefore(logger, "导出数据");
        ModelAndView mv = this.getModelAndView();        
        PageData pd = new PageData();
        pd = this.getPageData();
        page.setPd(pd);
        Map<String,Object> dataMap = new HashMap<String,Object>();
        List<String> titles = new ArrayList<String>();
        titles.add("订单号");
        titles.add("乘客姓名");
        titles.add("用户手机号");
        titles.add("状态");
        titles.add("类型");
        titles.add("司机姓名");
        titles.add("司机手机号");
        titles.add("车牌号");
        titles.add("订单创建时间");
        titles.add("订单结束时间");
        titles.add("里程");
        titles.add("费用");
        dataMap.put("titles", titles);
        List<PageData> orderList = orderService.datalist(page);
        List<PageData> varList = new ArrayList<PageData>();
        for(int i=0;i<orderList.size();i++){
            PageData vpd = new PageData();
            vpd.put("var1", orderList.get(i).getString("ordernumber"));
            vpd.put("var2", orderList.get(i).getString("customer_name"));
            vpd.put("var3", orderList.get(i).getString("customer_phone"));
            if(orderList.get(i).get("order_status")!=null){                
                if("0".equals(orderList.get(i).get("order_status").toString())){vpd.put("var4", "生成订单");}
                if("1".equals(orderList.get(i).get("order_status").toString())){vpd.put("var4", "司机已接单");}
                if("2".equals(orderList.get(i).get("order_status").toString())){vpd.put("var4", "确认上车");}
                if("3".equals(orderList.get(i).get("order_status").toString())){vpd.put("var4", "行程结束");}
                if("4".equals(orderList.get(i).get("order_status").toString())){vpd.put("var4", "完成订单");}
                if("5".equals(orderList.get(i).get("order_status").toString())){vpd.put("var4", "到达乘客上车点");}
                if("99".equals(orderList.get(i).get("order_status").toString())){vpd.put("var4", "取消订单");}
            }
            
            if(orderList.get(i).get("order_type")!=null){
                
                if("1".equals(orderList.get(i).get("order_type").toString())){vpd.put("var5", "实时专车");}
                if("2".equals(orderList.get(i).get("order_type").toString())){vpd.put("var5", "预约专车");}
                if("3".equals(orderList.get(i).get("order_type").toString())){vpd.put("var5", "送机");}
                if("4".equals(orderList.get(i).get("order_type").toString())){vpd.put("var5", "接机");}
            }
            
            vpd.put("var6", orderList.get(i).getString("name"));
            vpd.put("var7", orderList.get(i).getString("phone"));
            vpd.put("var8",  orderList.get(i).getString("license_number"));
            
            if(orderList.get(i).get("create_time")!=null){vpd.put("var9", orderList.get(i).get("create_time").toString());}
            
            if(orderList.get(i).get("end_time")!=null){vpd.put("var10", orderList.get(i).get("end_time").toString());}
            
            /*vpd.put("ordernumber", value);*/
            if(orderList.get(i).get("actual_price")!=null){vpd.put("var12", orderList.get(i).get("actual_price").toString());}
            
            varList.add(vpd);
        }
        dataMap.put("varList", varList);
        ObjectExcelView erv = new ObjectExcelView();
        mv = new ModelAndView(erv,dataMap);
        return mv;
        
    }
    
    

4.加上截图进行说明