SpringBoot整合POI导出Excel
文章目录
- 1.maven依赖
- 2.工具类
- 3.service
- 4.controller
- 5.页面
1.maven依赖
maven依赖
<dependency>
<groupId>org.apache.poigroupId>
<artifactId>poiartifactId>
<version>4.0.1version>
dependency>
<dependency>
<groupId>org.apache.poigroupId>
<artifactId>poi-ooxmlartifactId>
<version>4.0.1version>
dependency>
<dependency>
<groupId>org.apache.poigroupId>
<artifactId>ooxml-schemasartifactId>
<version>1.4version>
dependency>
2.工具类
工具类
import java.io.IOException;
import java.io.OutputStream;
import java.util.List;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.lang3.StringUtils;
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.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.Font;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.xssf.streaming.SXSSFCell;
import org.apache.poi.xssf.streaming.SXSSFRow;
import org.apache.poi.xssf.streaming.SXSSFSheet;
import org.apache.poi.xssf.streaming.SXSSFWorkbook;
public class ExcelUtil {
private static int firstRow = 0;
private static int lastRow = 0;
/**
* 导出excel工具类
*
* @param excelName sheet表名称
* @param fieldList 表头的定义集合
* @param dataList 数据集合
* @return
* @throws Exception
*/
@SuppressWarnings("deprecation")
public static HSSFWorkbook drawExcel(String excelName, String[] fields, List<String[]> dataList) {
// 第一步，创建一个webbook，对应一个Excel文件
HSSFWorkbook wb = new HSSFWorkbook();
// 第二步，在webbook中添加一个sheet,对应Excel文件中的sheet
HSSFSheet sheet = wb.createSheet(excelName);
sheet.createFreezePane(0, 1, 0, 1);
CellRangeAddress cra = new CellRangeAddress(0, 1, 0, fields.length - 1);
sheet.setAutoFilter(cra);
// 第三步，在sheet中添加表头第0行,注意老版本poi对Excel的行数列数有限制short
HSSFRow row = sheet.createRow((int) 0);
// 第四步，创建单元格，并设置值表头 设置表头居中
HSSFCellStyle style = wb.createCellStyle();
HSSFFont font = wb.getFontAt((short) 0);
font.setCharSet(HSSFFont.DEFAULT_CHARSET);
font.setFontHeightInPoints((short) 12);//更改默认字体大小
font.setFontName("宋体");//
style.setFont(font);
HSSFCellStyle style1 = wb.createCellStyle();
HSSFFont font1 = wb.createFont();
font1.setCharSet(HSSFFont.DEFAULT_CHARSET);
font1.setFontHeightInPoints((short) 12);//更改默认字体大小
font1.setFontName("宋体");//
style1.setFont(font1);
HSSFCell cell = null;
for (int i = 0; i < fields.length; i++) {
cell = row.createCell((short) i);
cell.setCellValue(fields[i]);
cell.setCellStyle(style);
}
// 第五步，写入实体数据 实际应用中这些数据从数据库得到，
for (int i = 0; i < dataList.size(); i++) {
row = sheet.createRow((int) i + 1);
String[] arrs = dataList.get(i);
// 第四步，创建单元格，并设置值
for (int j = 0; j < arrs.length; j++) {
cell = row.createCell((short) j);
cell.setCellStyle(style1);
cell.setCellValue(arrs[j]);
// row.createCell((short) j).setCellValue(arrs[j]);
}
}
return wb;
}
public static SXSSFWorkbook drawExcel2007(String excelName, String[] fields, List<String[]> dataList) {
// 声明一个工作薄
SXSSFWorkbook workBook = new SXSSFWorkbook();
// 生成一个表格
SXSSFSheet sheet = workBook.createSheet();
sheet.createFreezePane(0, 1, 0, 1);
CellRangeAddress cra = new CellRangeAddress(0, 1, 0, fields.length - 1);
sheet.setAutoFilter(cra);
workBook.setSheetName(0, excelName);
CellStyle style = workBook.createCellStyle();
Font font = workBook.getFontAt((short) 0);
font.setCharSet(HSSFFont.DEFAULT_CHARSET);
font.setFontHeightInPoints((short) 12);//更改默认字体大小
font.setFontName("宋体");//
//font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
style.setFont(font);
// 创建表格标题行 第一行
SXSSFRow titleRow = sheet.createRow(0);
for (int i = 0; i < fields.length; i++) {
titleRow.createCell(i).setCellValue(fields[i]);
}
//插入需导出的数据
for (int i = 0; i < dataList.size(); i++) {
SXSSFRow row = sheet.createRow(i + 1);
String[] arrs = dataList.get(i);
// 第四步，创建单元格，并设置值
for (int j = 0; j < arrs.length; j++) {
SXSSFCell cells = row.createCell((short) j);
cells.setCellStyle(style);
cells.setCellValue(arrs[j]);
}
}
return workBook;
}
public static SXSSFWorkbook drawExcel2018(String excelName, String[] fields, List<String[]> dataList) {
// 声明一个工作薄
SXSSFWorkbook workBook = new SXSSFWorkbook();
// 生成一个表格
SXSSFSheet sheet = workBook.createSheet();
sheet.createFreezePane(0, 1, 0, 1);
CellRangeAddress cra = new CellRangeAddress(0, 1, 0, fields.length - 1);
sheet.setAutoFilter(cra);
workBook.setSheetName(0, excelName);
CellStyle style = workBook.createCellStyle();
Font font = workBook.getFontAt((short) 0);
font.setCharSet(HSSFFont.DEFAULT_CHARSET);
font.setFontHeightInPoints((short) 12);//更改默认字体大小
font.setFontName("宋体");//
//font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
style.setFont(font);
// 创建表格标题行 第一行
SXSSFRow titleRow = sheet.createRow(0);
for (int i = 0; i < fields.length; i++) {
titleRow.createCell(i).setCellValue(fields[i]);
}
//插入需导出的数据
for (int i = 0; i < dataList.size(); i++) {
SXSSFRow row = sheet.createRow(i + 1);
String[] arrs = dataList.get(i);
// 第四步，创建单元格，并设置值
for (int j = 0; j < arrs.length; j++) {
SXSSFCell cells = row.createCell((short) j);
cells.setCellStyle(style);
cells.setCellValue(StringUtils.isNotEmpty(arrs[j]) ? arrs[j] : "");
}
}
return workBook;
}
/**
* 导出excel工具类
* 合并单元格
*
* @param excelName sheet表名称
* @param fieldList 表头的定义集合
* @param dataList 数据集合
* @return
* @throws Exception
*/
@SuppressWarnings("deprecation")
public static HSSFWorkbook drawExcelByCellRange(String excelName, String[] fields, List<String[]> dataList) {
// 第一步，创建一个webbook，对应一个Excel文件
HSSFWorkbook wb = new HSSFWorkbook();
// 第二步，在webbook中添加一个sheet,对应Excel文件中的sheet
HSSFSheet sheet = wb.createSheet(excelName);
sheet.createFreezePane(0, 1, 0, 1);
CellRangeAddress cra = new CellRangeAddress(0, 1, 0, fields.length - 1);
sheet.setAutoFilter(cra);
// 第三步，在sheet中添加表头第0行,注意老版本poi对Excel的行数列数有限制short
HSSFRow row = sheet.createRow((int) 0);
// 第四步，创建单元格，并设置值表头 设置表头居中
HSSFCellStyle style = wb.createCellStyle();
HSSFFont font = wb.getFontAt((short) 0);
font.setCharSet(HSSFFont.DEFAULT_CHARSET);
font.setFontHeightInPoints((short) 12);//更改默认字体大小
font.setFontName("宋体");//
style.setFont(font);
HSSFCellStyle style1 = wb.createCellStyle();
HSSFFont font1 = wb.createFont();
font1.setCharSet(HSSFFont.DEFAULT_CHARSET);
font1.setFontHeightInPoints((short) 12);//更改默认字体大小
font1.setFontName("宋体");//
style1.setFont(font1);
HSSFCell cell = null;
for (int i = 0; i < fields.length; i++) {
cell = row.createCell((short) i);
cell.setCellValue(fields[i]);
cell.setCellStyle(style);
}
// 第五步，写入实体数据 实际应用中这些数据从数据库得到，
try {
for (int i = 0; i < dataList.size(); i++) {
row = sheet.createRow((int) i + 1);
String[] arrs = dataList.get(i);
// 第四步，创建单元格，并设置值
for (int j = 0; j < arrs.length; j++) {
String arrsJ = arrs[j] == null ? "" : arrs[j];
String dataListArrsJ = "";
if (dataList.size() > i + 1) {
dataListArrsJ = dataList.get(i + 1)[j] == null ? "" : arrs[j];
} else {
dataListArrsJ = "";
}
cell = row.createCell((short) j);
cell.setCellStyle(style1);
cell.setCellValue(arrs[j]);
// 判断和下面单元格内容是否相同
if (dataList.size() > (i + 1) && j == 0 && dataList.get(i + 1)[0] != null && arrs[0].equals(dataList.get(i + 1)[0])) {
firstRow = i + 1;
lastRow = i + 2;
sheet.addMergedRegion(new CellRangeAddress(i + 1, i + 2, j, j));//合并单元格
} else if (dataList.size() > (i + 1) && j != 0 && j < arrs.length - 3 && arrsJ.equals(dataListArrsJ)) {
sheet.addMergedRegion(new CellRangeAddress(firstRow, lastRow, j, j));//合并单元格
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
return wb;
}
public static void downExcel(HSSFWorkbook wb, HttpServletResponse response, String excelName) {
OutputStream os = null;
// 输出
response.reset();
try {
response.addHeader("Content-Disposition", "attachment;filename=" + new String((excelName + ".xlsx").getBytes("UTF-8"), "ISO-8859-1"));
//response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(excelName + ".xls", TygConstants.ALL_ENCODING));
os = response.getOutputStream();
wb.write(os);
} catch (Exception e) {
throw new RuntimeException("导出报表异常");
} finally {
try {
if (os != null) {
os.flush();
os.close();
}
} catch (IOException e) {
throw new RuntimeException("导出报表异常");
}
}
}
}
3.service
service
SXSSFWorkbook exportListExcel(CheckWorkVo vo);
-------------------------------------
@Override
public SXSSFWorkbook exportListExcel(CheckWorkVo vo) {
List<CheckWorkVo> list = mapper.getList(vo); //虎丘数据
// 声明一个工作薄
SXSSFWorkbook workBook = new SXSSFWorkbook();
// 生成一个表格
SXSSFSheet sheet = workBook.createSheet();
sheet.createFreezePane(0, 1, 0, 1);
workBook.setSheetName(0, "个人明细");
CellStyle style = workBook.createCellStyle();
Font font = workBook.getFontAt((short) 0);
font.setCharSet(HSSFFont.DEFAULT_CHARSET);
font.setFontHeightInPoints((short) 12);//更改默认字体大小
font.setFontName("宋体");//
style.setFont(font);
// 创建表格标题行 第一行
SXSSFRow titleRow = sheet.createRow(0);
titleRow.createCell(0).setCellValue("员工姓名");
titleRow.createCell(1).setCellValue("预计人天");
titleRow.createCell(2).setCellValue("实际人天");
titleRow.createCell(3).setCellValue("缺少人天");
for (int i = 0; i < list.size(); i++) {
CheckWorkVo checkWorkVo = list.get(i);
SXSSFRow titleRowNext = sheet.createRow(i + 1);
titleRowNext.createCell(0).setCellValue(String.valueOf(checkWorkVo.getNickName()));
titleRowNext.createCell(1).setCellValue(String.valueOf(checkWorkVo.getPreWorkDay()));
titleRowNext.createCell(2).setCellValue(String.valueOf(checkWorkVo.getNowWorkDay()));
titleRowNext.createCell(3).setCellValue(String.valueOf(checkWorkVo.getLackWorkDay()));
}
return workBook;
}
4.controller
controller
public void exportList(HttpServletRequest request,HttpServletResponse response) throws ParseException, IOException {
SXSSFWorkbook wb = service.exportListExcel(checkWorkVo);
OutputStream os = null;
String fileName ="工时统计表"+new SimpleDateFormat("yyyyMMdd").format(new Date());
response.reset();
response.addHeader("Content-Disposition", "attachment;filename="+ new String((fileName+".xlsx").getBytes("UTF-8"),"ISO-8859-1"));
os = response.getOutputStream();
wb.write(os);
}
5.页面
页面
//导出excel
$("#project-btn-export").click(function () {
var data = "access_token="+config.getToken().access_token
window.location.href = config.base_server + '/exportList?'+data;
})