java中poi实现Excel导出

第一步：引入所需依赖

            org.apache.poi
            poi
            3.16
        
        
            org.apache.poi
            poi-ooxml
            3.16

第二步：构建数据（模拟）代码如下

package com.mongo.controller;
import com.mongo.entity.Meals;
import org.apache.poi.hssf.usermodel.*;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import javax.servlet.http.HttpServletResponse;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;

/**
 * @author: songgt
 * @date: 2018-07-11 8:52
 */
@RestController
@RequestMapping(path = "/test")
public class TestController {
    @GetMapping(path = "/export")
    public void export(HttpServletResponse response) throws Exception{
        //构建数据
        List mealsList = new ArrayList<>();
        Meals meals = new Meals();
        meals.setTcqd("0001");
        meals.setTcbm("000254");
        meals.setWxbs("asdfadxoiwnhFSAK");
        meals.setYhdd("FDSDFK00125");
        meals.setSjxm("liumin");
        meals.setSjdz("shengtangdasha");
        meals.setLxfs("12398432498");
        meals.setSjjg("6541");
        meals.setSjlx("ddddddd");
        meals.setSbkh("555555");

        Meals meals1 = new Meals();
        meals1.setTcqd("0002");
        meals1.setTcbm("0002232323");
        meals1.setWxbs("asdfadxoiwnhFSAK");
        meals1.setYhdd("FDSDFK00125");
        meals1.setSjxm("liumin");
        meals1.setSjdz("shengtangdasha");
        meals1.setLxfs("12398432498");
        meals1.setSjjg("6541");
        meals1.setSjlx("啊啊啊啊啊啊啊啊啊啊啊啊啊");
        meals1.setSbkh("666666666666");
        mealsList.add(meals);
        mealsList.add(meals1);

        //Excel表头
        String []title = {"套餐渠道","套餐编码","微信标识","用户订单","收件姓名","收件地址","联系方式","收件价格","收件类型","设备卡号"};
        //sheet名
        String sheetName = "套餐信息";
        String fileName = new String("套餐信息列表".getBytes(),"ISO-8859-1");

        HSSFWorkbook workbook = new HSSFWorkbook();
        HSSFSheet sheet = workbook.createSheet(sheetName);
        HSSFRow row = sheet.createRow(0);
        //这里用了两次独立的for循环，我觉得这样思路更清晰，你也可以用嵌套循环
        for (int i=0;i

第三步：访问测试http://localhost:8888/test/export
访问下载如下

image.png

文件打开

image.png