查询数据以Excel形式导出

-----controller---
@GET
@Path("export")
@Produces(MediaType.APPLICATION_JSON)
public void export(@Context HttpServletResponse response, @QueryParam("startTime") String startTime, @QueryParam("endTime") String endTime,
                   @QueryParam("username") String username, @QueryParam("usable") String usable
) throws ParseException, IOException {
    Long startTimeStamp = DateUtil.getTimeStamp(
            DateUtil.formatDate(startTime + " 00:00:00", DateUtil.DATE_FORMAT_PATTERN_DEFAULT));
    Long endTimeStamp = DateUtil.getTimeStamp(
            DateUtil.formatDate(endTime + " 23:59:59", DateUtil.DATE_FORMAT_PATTERN_DEFAULT));

    investService.exportRepaymentRecords(response, startTimeStamp,endTimeStamp,username,usable);
}
--------------
------service-----------

/**
 * 导出excel表格
 */
public void exportRepaymentRecords(HttpServletResponse response, Long startDate, Long endDate, String username, String usable) throws IOException {
    List list = getList(startDate, endDate, username, usable, null, null);

    response.setHeader("Content-disposition", "attachment;filename=" +
            URLEncoder.encode("还款信息管理", "UTF-8") +
            DateFormatUtils.format(DateUtil.getTime(startDate), "(yyyy-MM-dd - ") +
            DateFormatUtils.format(DateUtil.getTime(endDate), "yyyy-MM-dd)") +
            ".xls");
    ExportExcel exportExcel = new ExportExcel<>();
    byte[] bytes = exportExcel.exportExcel(
            "还款信息",
            new String[]{"用户ID", "用户名", "身份证", "投资次数", "投资总额", "充值次数", "充值总额", "提现次数", "提现总额",
                    "可用额度", "注册时间", "首次投资时间", "最后登录地址", "渠道"},
            new String[]{"userId", "userName", "cardId", "tenderCount", "tenderMoney", "rechargeCount", "rechargeMoney", "cashCount", "cashMoney",
                    "balance", "regTime", "firstTenderTime", "lastIp", "agent"},
            list,
            "yyyy-MM-dd HH:mm:ss", true
    );
    response.getOutputStream().write(bytes);
    response.flushBuffer();
}

/*********************
 * private methods
 ***************************/
private List getList(Long startDate, Long endDate, String username, String usable, Integer pageOffset, Integer pageSize) {
    List list = investDao.excelList(startDate, endDate, username, usable, pageOffset, pageSize);
    if (list.size() > 0) {
        for (int i = 0; i < list.size(); i++) {
            InvestRecord record = list.get(i);
            //时间
            record.setRegTime(DateUtil.formatDate(DateUtil.getTime(Long.valueOf(record.getRegTime()).longValue()), "yyyy-MM-dd HH:mm:ss"));
            record.setFirstTenderTime(DateUtil.formatDate(DateUtil.getTime(Long.valueOf(record.getFirstTenderTime()).longValue()), "yyyy-MM-dd HH:mm:ss"));
            //渠道
            if (record.getAgent() != null) {
                record.setAgent(AgentEnum.convert(Integer.parseInt(record.getAgent())).getValue());
            } else {
                record.setAgent("未知");
            }
            //IP地址
            String province = IpUtil.getArea(record.getLastIp()).getProvince();
            String city = IpUtil.getArea(record.getLastIp()).getCity();
            if (province == null && city == null) {
                record.setLastIp("未知");
            } else if (province != null && city == null) {
                record.setLastIp(province + ",未知");
            } else if (province == null && city != null) {
                record.setLastIp("未知," + city);
            } else {
                record.setLastIp(province + "," + city);
            }
            //提现总额 充值总额为空
            if (record.getRechargeMoney() == null) {
                record.setRechargeMoney("0");
            }
            if (record.getCashMoney() == null) {
                record.setCashMoney("0");
            }
        }
    }
    return list;
}
------------------
------Dao   返回对象需要序列化implements Serializable-----

public List excelList(Long startDate, Long endDate, String username, String usable, Integer pageOffset, Integer pageSize) {
    Map map = new HashMap<>();
    map.put("startDate", startDate);
    map.put("endDate", endDate);
    map.put("username", username);
    map.put("usable", usable);
    return hcdSqlSession.selectList("financial.invest.listExcel", map);
}
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转载于:https://www.cnblogs.com/ph121/p/6909756.html