package com.cxlm.card_god.cardgod_web.utils;
import com.cxlm.card_god.cardgod_web.constants.CardGodConstant;
import org.apache.commons.lang3.StringUtils;
import org.apache.poi.hssf.usermodel.HSSFCell;
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 javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.*;
import java.lang.reflect.Method;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.UUID;
/**
* Created by Admin on 2018/6/26.
*/
public final class ExportExcelUtil {
/***
* 构造方法
*/
private ExportExcelUtil() {
}
/***
* 工作簿
*/
private static HSSFWorkbook workbook;
/***
* sheet
*/
private static HSSFSheet sheet;
/***
* 标题行开始位置
*/
private static final int TITLE_START_POSITION = 0;
/***
* 时间行开始位置
*/
private static final int DATEHEAD_START_POSITION = 1;
/***
* 表头行开始位置
*/
private static final int HEAD_START_POSITION = 2;
/***
* 文本行开始位置
*/
private static final int CONTENT_START_POSITION = 3;
/**
*
* @param dataList
* 对象集合
* @param titleMap
* 表头信息（对象属性名称->要显示的标题值)[按顺序添加]
* @param sheetName
* sheet名称和表头值
*/
public static void excelExport(List<?> dataList, Map<String, String> titleMap, String sheetName, HttpServletResponse response) {
// 初始化workbook
initHSSFWorkbook(sheetName);
// 标题行
createTitleRow(titleMap, sheetName);
// 时间行
createDateHeadRow(titleMap);
// 表头行
createHeadRow(titleMap);
// 文本行
createContentRow(dataList, titleMap);
//设置自动伸缩
//autoSizeColumn(titleMap.size());
// 写入处理结果
try {
//生成UUID文件名称
//UUID是指在一台机器上生成的数字，它保证对在同一时空中的所有机器都是唯一的。
UUID uuid = UUID.randomUUID();
String filedisplay =CardGodConstant.DETAIL_OF_COMMISSION_REPORT+uuid+ CardGodConstant.XLS;
//如果web项目，1、设置下载框的弹出（设置response相关参数)；2、通过httpservletresponse.getOutputStream()获取
response.reset();
response.setContentType("application/vnd.ms-excel;charset=utf-8");
response.setHeader("Content-Disposition", "attachment;filename="+ new String((filedisplay).getBytes(), "iso-8859-1"));
ServletOutputStream out = response.getOutputStream();
workbook.write(out);
out.close();
}
catch (Exception e) {
e.printStackTrace();
}
}
/***
*
* @param sheetName
* sheetName
*/
private static void initHSSFWorkbook(String sheetName) {
workbook = new HSSFWorkbook();
sheet = workbook.createSheet(sheetName);
}
/**
* 生成标题（第零行创建）
* @param titleMap 对象属性名称->表头显示名称
* @param sheetName sheet名称
*/
private static void createTitleRow(Map<String, String> titleMap, String sheetName) {
CellRangeAddress titleRange = new CellRangeAddress(0, 0, 0, titleMap.size() - 1);
sheet.addMergedRegion(titleRange);
HSSFRow titleRow = sheet.createRow(TITLE_START_POSITION);
HSSFCell titleCell = titleRow.createCell(0);
titleCell.setCellValue(sheetName);
}
/**
* 创建时间行（第一行创建）
* @param titleMap 对象属性名称->表头显示名称
*/
private static void createDateHeadRow(Map<String, String> titleMap) {
CellRangeAddress dateRange = new CellRangeAddress(1, 1, 0, titleMap.size() - 1);
sheet.addMergedRegion(dateRange);
HSSFRow dateRow = sheet.createRow(DATEHEAD_START_POSITION);
HSSFCell dateCell = dateRow.createCell(0);
dateCell.setCellValue(new SimpleDateFormat("yyyy年MM月dd日").format(new Date()));
}
/**
* 创建表头行（第二行创建）
* @param titleMap 对象属性名称->表头显示名称
*/
private static void createHeadRow(Map<String, String> titleMap) {
// 第1行创建
HSSFRow headRow = sheet.createRow(HEAD_START_POSITION);
int i = 0;
for (String entry : titleMap.keySet()) {
HSSFCell headCell = headRow.createCell(i);
headCell.setCellValue(titleMap.get(entry));
i++;
}
}
/**
*
* @param dataList 对象数据集合
* @param titleMap 表头信息
*/
private static void createContentRow(List<?> dataList, Map<String, String> titleMap) {
try {
int i=0;
for (Object obj : dataList) {
HSSFRow textRow = sheet.createRow(CONTENT_START_POSITION + i);
int j = 0;
for (String entry : titleMap.keySet()) {
String method = "get" + entry.substring(0, 1).toUpperCase() + entry.substring(1);
Method m = obj.getClass().getMethod(method, null);
String value = m.invoke(obj, null).toString();
HSSFCell textcell = textRow.createCell(j);
textcell.setCellValue(value);
j++;
}
i++;
}
}
catch (Exception e) {
e.printStackTrace();
}
}
/**
* 自动伸缩列（如非必要，请勿打开此方法，耗内存）
* @param size 列数
*/
private static void autoSizeColumn(Integer size) {
for (int j = 0; j < size; j++) {
sheet.autoSizeColumn(j);
}
}
}
List<Commission> staffs = new ArrayList<Commission>();
List<Commission> commissions = commissionService.listCommission(commission, null);
Map<String, String> titleMap = new LinkedHashMap<String, String>();
titleMap.put("id", "列表ID");
titleMap.put("createDate", "创建时间");
titleMap.put("updateDate", "更新时间");
titleMap.put("dateMoney", "佣金时间");
titleMap.put("userId", "用户ID");
titleMap.put("userName", "名字");
titleMap.put("userPhone", "联系方式");
titleMap.put("userCardNum", "银行卡号");
titleMap.put("money", "佣金金额");
titleMap.put("cardType", "银行卡类型");
titleMap.put("userPayTreasure", "支付宝账号");
titleMap.put("transferDate", "转账时间");
titleMap.put("withdrawalDate", "申请结算时间");
String sheetName = "佣金列表详细"; 这里要遍历查询到的集合数据，然后在 staffs.add（集合数据）
ExportExcelUtil.excelExport(staffs, titleMap, sheetName,response);//导出Excel function OutputExcel(excel) { $('#commission_list_term_form').form('submit', { url: 'xxxx/xxx.do', onSubmit: function () { return $("#commission_list_term_form").form('validate') }, success:function (data) { if(data.code == '1'){ $.messager.alert('提示消息','导出失败','show'); }else{ $('#dg').datagrid('reload'); $.messager.alert('提示消息','导出成功','show'); } } }); }
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