poi导出Excel, 浏览器下载

最新推荐文章于 2024-08-08 22:58:45 发布

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#poi #浏览器下载

本文介绍了一个用于导出划小专区进展的Java控制器，该控制器使用Spring Boot框架，通过POST请求导出指定省份的子任务、功能点等进展信息至Excel文件。

package com.ultra.core.zone.controller;

import java.io.IOException;
import java.io.OutputStream;
import java.net.URLEncoder;
import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.lang3.StringUtils;
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.ss.util.CellRangeAddress;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import com.ultra.common.ret.RetResponse;
import com.ultra.common.ret.RetResult;
import com.ultra.common.vo.PageMapper;
import com.ultra.core.zone.bean.ZoneOopProgress;
import com.ultra.core.zone.bean.ZoneOopProgressLog;
import com.ultra.core.zone.service.ZoneOOPDemandProgressService;

import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;

/**
 * <p>
 * Description:
 * </p>
 *
 * @author dell
 * @version 4.1

 * <p>
 * History:
 *
 * Date                     Author         Version     Description
 * ---------------------------------------------------------------------------------
 * 2018年7月10日 下午6:09:29          dell        4.1         To create
 * </p>
 *
 * @since
 * @see
 */
@Api(tags = "划小专区进展")
@RestController
@RequestMapping("/demand/progress/")
public class ZoneOOPDemandProgressController {
    @Autowired
    private ZoneOOPDemandProgressService zoneOOPDemandProgressService;

    /**
     * 导出
     * @param provinceName
     */
    @RequestMapping("exportZoneOopProcess")
    public void exportZoneOopProcess(HttpServletRequest request, HttpServletResponse response) {
        String provinceName = request.getParameter("provinceName");
        HSSFWorkbook workbook = new HSSFWorkbook();//
        HSSFSheet sheet = workbook.createSheet();//创建工作表
        HSSFRow row1 = sheet.createRow(0);//创建第一行
        //设置列名
        row1.createCell(0).setCellValue("子任务");
        row1.createCell(1).setCellValue("功能点");
        row1.createCell(2).setCellValue("省内业务规则细化情况");
        row1.createCell(3).setCellValue("IT支撑方案编制情况");
        row1.createCell(4).setCellValue("系统支撑情况");
        row1.createCell(5).setCellValue("功能点所属系统");
        row1.createCell(6).setCellValue("下阶段计划");
        //查询数据
        List<ZoneOopProgress> list = zoneOOPDemandProgressService.getZoneOopProcess(provinceName);
        String flag = null;
        int index = 0;
        for (int i = 0; i < list.size(); i++) {
            ZoneOopProgress zoneOopProgress = list.get(i);
            HSSFRow row = sheet.createRow(i + 1);
            row.createCell(0).setCellValue(zoneOopProgress.getSubTask());
            row.createCell(1).setCellValue(zoneOopProgress.getFunctionPoint());
            row.createCell(2).setCellValue(zoneOopProgress.getThinningOfBusinessRules());
            row.createCell(3).setCellValue(zoneOopProgress.getDevelopmentOfItSupport());
            row.createCell(4).setCellValue(zoneOopProgress.getSystemSupport());
            row.createCell(5).setCellValue(zoneOopProgress.getFunctionPointSystem());
            row.createCell(6).setCellValue(zoneOopProgress.getNextPhasePlan());
            //如果当前子功能不等于上一个子功能, 则把上一个子功能合并
            if (!StringUtils.equals(zoneOopProgress.getSubTask(), flag) && StringUtils.isNotBlank(flag)) {
                CellRangeAddress rangeAddress = new CellRangeAddress(index + 1, i, 0, 0);//合并单元格; 起始行号，终止行号， 起始列号，终止列号
                sheet.addMergedRegion(rangeAddress);
                flag = zoneOopProgress.getSubTask();
                index = i;
            } else {
                flag = zoneOopProgress.getSubTask();
            }
            //最后合并单元格
            if (i == list.size() - 1) {
                CellRangeAddress rangeAddress = new CellRangeAddress(index + 1, i + 1, 0, 0);
                sheet.addMergedRegion(rangeAddress);
            }
        }
        OutputStream output;
        try {
            output = response.getOutputStream();
            //清空缓存
            response.reset();
            // 定义浏览器响应表头，并定义下载名
            String fileName = URLEncoder.encode("ExportExcel.xls", "UTF-8");
            response.setHeader("Content-disposition", "attachment;filename=" + fileName);
            //定义下载的类型，标明是excel文件
            response.setContentType("application/vnd.ms-excel;charset=UTF-8");
            //把创建好的excel写入到输出流
            workbook.write(output);
            //随手关门
            output.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

}