1、在pom.xml中添加Excel导入导出依赖
<!--导入导出excel需要的包-->
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.14-beta1</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml-schemas</artifactId>
<version>3.14-beta1</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.14-beta1</version>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.5.2</version>
</dependency>
<!--Excel导出-->
2、jsp使用
<%--导入--%>
<button type="button" style="width: 8%;outline: none;margin-left: 1.5%;margin-bottom: 15px" onclick="openImportWin()" class="btn btn-primary">导入用户</button>
function openImportWin() {
document.getElementById("ImportDiv").style.display = "block";
}
<div class="floatingWin" style="display: none;position: absolute" id="ImportDiv">
<form method="POST" enctype="multipart/form-data" id="form1">
<button type="button" style="width: 14%;outline: none;margin-top: 14px;margin-left: 1.5%;margin-bottom: 15px" onclick="closeImportWin()" class="btn btn-primary">关闭</button>
<button type="button" style="width: 14%;outline: none;margin-top: 14px;margin-left: 1.5%;margin-bottom: 15px" onclick="submitImport()" class="btn btn-primary">导入</button>
<div class="form-group" style="width: 100%;height: 8%">
<label class="col-sm-2 control-label" style="margin-left: 1.5%;width: 12%" for="upfile">导入文件</label>
<div class="col-sm-4" style="width: 77%;margin-left:0.35%;height: 8%;">
<input type="file" name="upfile" id="upfile" class="col-sm-10 upfile" />
</div>
</div>
</form>
</div>
<script type="text/javascript">
function submitImport(){
if(document.getElementById("upfile").value == ''){
closeImportWin();
swal("提示","未选择导入文件！");
setTimeout('document.getElementById("ImportDiv").style.display = "block"',2000);
}else{
$('#form1').ajaxSubmit({
url:'/excel/ExcelImport',
dataType: 'text',
success: resutlMsg,
error: errorMsg
});
function resutlMsg(msg){
closeImportWin();
swal("提示",msg);
$(".fileinput-remove-button").click();
}
function errorMsg(){
closeImportWin();
swal("提示","网络出错，请重新提交！");
}
}
}
</script>
<%--导出--%>
<button type="button" style="width: 21%;outline: none;margin-top: 14px;margin-left: 1.5%;margin-bottom: 15px" onclick="exportAllGrade()" class="btn btn-primary">导出全部成绩</button>
function exportAllGrade() {
var CourseID = $("#ds_course").val();
window.location.href = "/excel/allExports?CourseID="+CourseID;
}
2、controller
package com.graduation.controller;
import com.graduation.bean.Exercise;
import com.graduation.bean.ExerciseCheck;
import com.graduation.service.ExcelService;
import com.graduation.service.ExerciseService;
import com.graduation.service.UserService;
import com.graduation.util.CosineSimilarAlgorithm;
import com.graduation.util.ExcelUtil;
import com.graduation.util.WordRead;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.MultipartHttpServletRequest;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.ws.rs.core.Response;
import java.beans.IntrospectionException;
import java.io.*;
import java.lang.reflect.InvocationTargetException;
import java.text.DecimalFormat;
import java.text.ParseException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* Excel控制器
* Created by ASUS on 2018/5/20
*
* @Authod K
*/
@Controller
@RequestMapping("/excel")
public class ExcelController {
@Autowired
private ExcelService excelService;
@Autowired
private UserService userService;
@Autowired
private ExerciseService exerciseService;
@ResponseBody
@RequestMapping("/exports")
public void export(@RequestParam(value = "CourseID",required = true)String CourseID,@RequestParam(value = "ChapterID",required = true) String ChapterID,@RequestParam(value = "MinChapterID",required = true) String MinChapterID,HttpServletRequest request, HttpServletResponse response) throws ClassNotFoundException, IntrospectionException, IllegalAccessException, ParseException, InvocationTargetException {
System.out.println(CourseID);
System.out.println("excel导出开始");
String salaryDate="1";
System.out.println("list:"+salaryDate);
if(salaryDate!=""){
response.reset(); //清除buffer缓存
Map<String,Object> map=new HashMap<String,Object>();
System.out.println("文件名：");
// 指定下载的文件名
response.setHeader("Content-Disposition", "attachment;filename=GradeList.xlsx");
response.setContentType("application/vnd.ms-excel;charset=UTF-8");
response.setHeader("Pragma", "no-cache");
response.setHeader("Cache-Control", "no-cache");
response.setDateHeader("Expires", 0);
XSSFWorkbook workbook=null;
//导出Excel对象
workbook = excelService.exportExcelInfo(salaryDate,CourseID,ChapterID,MinChapterID);
System.out.println(workbook);
OutputStream output;
try {
System.out.println("创建成功！");
output = response.getOutputStream();
BufferedOutputStream bufferedOutPut = new BufferedOutputStream(output);
bufferedOutPut.flush();
workbook.write(output);
bufferedOutPut.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
@ResponseBody
@RequestMapping("/allExports")
public void allExports(@RequestParam(value = "CourseID",required = true)String CourseID,HttpServletRequest request, HttpServletResponse response) throws ClassNotFoundException, IntrospectionException, IllegalAccessException, ParseException, InvocationTargetException {
System.out.println(CourseID);
System.out.println("excel导出开始");
String salaryDate="1";
System.out.println("list:"+salaryDate);
if(salaryDate!=""){
response.reset(); //清除buffer缓存
Map<String,Object> map=new HashMap<String,Object>();
System.out.println("文件名：");
// 指定下载的文件名
response.setHeader("Content-Disposition", "attachment;filename=GradeList.xlsx");
response.setContentType("application/vnd.ms-excel;charset=UTF-8");
response.setHeader("Pragma", "no-cache");
response.setHeader("Cache-Control", "no-cache");
response.setDateHeader("Expires", 0);
XSSFWorkbook workbook=null;
//导出Excel对象
workbook = excelService.exportAllExcelInfo(salaryDate,CourseID);
System.out.println(workbook);
OutputStream output;
try {
System.out.println("创建成功！");
output = response.getOutputStream();
BufferedOutputStream bufferedOutPut = new BufferedOutputStream(output);
bufferedOutPut.flush();
workbook.write(output);
bufferedOutPut.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
@ResponseBody
@RequestMapping("/ExcelImport")
public void ajaxUploadExcel(HttpServletRequest request,HttpServletResponse response) throws Exception {
MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;
InputStream in =null;
List<List<Object>> listob = null;
MultipartFile file = multipartRequest.getFile("upfile");
if(file.isEmpty()){
throw new Exception("文件不存在！");
}
in = file.getInputStream();
listob = new ExcelUtil().getBankListByExcel(in,file.getOriginalFilename());
//该处可调用service相应方法进行数据保存到数据库中，现只对数据输出
for (int i = 0; i < listob.size(); i++) {
List<Object> lo = listob.get(i);
/* Response.Status.Family family = new Response.Status.Family();
family.setJtbh(String.valueOf(lo.get(0)));
family.setXm(String.valueOf(lo.get(1)));
family.setHy(String.valueOf(lo.get(2)));
family.setBz(String.valueOf(lo.get(3)));
System.out.println("打印信息-->"+family.toString());*/
int count = userService.UserRepeat(lo.get(0).toString());
if(count == 0){
userService.UserAdd(lo.get(0).toString(), lo.get(1).toString(), lo.get(2).toString(), lo.get(3).toString(), lo.get(4).toString(), lo.get(5).toString());
}
}
PrintWriter out = null;
response.setCharacterEncoding("utf-8"); //防止ajax接受到的中文信息乱码
out = response.getWriter();
out.print("文件导入成功！");
out.flush();
out.close();
}
}
5、Service
package com.graduation.service;
import com.graduation.bean.ExerciseCheck;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import java.beans.IntrospectionException;
import java.lang.reflect.InvocationTargetException;
import java.text.ParseException;
import java.util.List;
/**
* Created by ASUS on 2018/5/20
*
* @Authod K
*/
public interface ExcelService {
/**
* 导出Excel表格
* @param salaryDate
* @return
* @throws InvocationTargetException
* @throws ClassNotFoundException
* @throws IntrospectionException
* @throws ParseException
* @throws IllegalAccessException
*/
XSSFWorkbook exportChapterExcelInfo(String salaryDate,String CourseID,String ChapterID) throws InvocationTargetException, ClassNotFoundException, IntrospectionException, ParseException, IllegalAccessException;
XSSFWorkbook exportAllExcelInfo(String salaryDate,String CourseID) throws InvocationTargetException, ClassNotFoundException, IntrospectionException, ParseException, IllegalAccessException;
XSSFWorkbook exportExcelInfo(String salaryDate,String CourseID,String ChapterID,String MinChapterID) throws InvocationTargetException, ClassNotFoundException, IntrospectionException, ParseException, IllegalAccessException;
XSSFWorkbook CheckexportExcelInfo(String salaryDate, List<ExerciseCheck> list) throws InvocationTargetException, ClassNotFoundException, IntrospectionException, ParseException, IllegalAccessException;
}
6、ServiceImpl
package com.graduation.service.impl;
import com.graduation.bean.ExcelBean;
import com.graduation.bean.ExcelClass;
import com.graduation.bean.ExcelExercise;
import com.graduation.bean.ExerciseCheck;
import com.graduation.service.ExcelService;
import com.graduation.service.ExerciseService;
import com.graduation.util.ExcelUtil;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import javax.swing.text.AbstractDocument;
import java.beans.IntrospectionException;
import java.lang.reflect.InvocationTargetException;
import java.text.ParseException;
import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
/**
* Excel实现类
* Created by ASUS on 2018/5/20
*
* @Authod Grey Wolf
*/
@Service("ExcelService")
public class ExcelServiceImpl implements ExcelService {
@Autowired
private ExerciseService exerciseService;
@Override
public XSSFWorkbook exportChapterExcelInfo(String salaryDate, String CourseID, String ChapterID) throws InvocationTargetException, ClassNotFoundException, IntrospectionException, ParseException, IllegalAccessException {
List<ExcelExercise> list = exerciseService.QueryChapterExcelExercise(CourseID,ChapterID);
List<ExcelBean> excel=new ArrayList<>();
Map<Integer,List<ExcelBean>> map=new ExcelClass().contentExcel();
XSSFWorkbook xssfWorkbook=null;
String sheetName = "成绩";
//调用ExcelUtil的方法
System.out.println("创建表格:"+sheetName);
xssfWorkbook = ExcelUtil.createExcelFile(ExcelExercise.class, list, map, sheetName);
return xssfWorkbook;
}
@Override
public XSSFWorkbook exportAllExcelInfo(String salaryDate, String CourseID) throws InvocationTargetException, ClassNotFoundException, IntrospectionException, ParseException, IllegalAccessException {
List<ExcelExercise> list = exerciseService.QueryAllExcelExercise(CourseID);
List<ExcelBean> excel=new ArrayList<>();
Map<Integer,List<ExcelBean>> map=new ExcelClass().contentExcel();
XSSFWorkbook xssfWorkbook=null;
String sheetName = "成绩";
//调用ExcelUtil的方法
System.out.println("创建表格:"+sheetName);
xssfWorkbook = ExcelUtil.createExcelFile(ExcelExercise.class, list, map, sheetName);
return xssfWorkbook;
}
@Override
public XSSFWorkbook exportExcelInfo(String salaryDate,String CourseID,String ChapterID,String MinChapterID) throws InvocationTargetException, ClassNotFoundException, IntrospectionException, ParseException, IllegalAccessException {
//根据条件查询数据，把数据装载到一个list中
List<ExcelExercise> list = exerciseService.QueryExcelExercise(CourseID,ChapterID,MinChapterID);
List<ExcelBean> excel=new ArrayList<>();
Map<Integer,List<ExcelBean>> map=new ExcelClass().contentExcel();
XSSFWorkbook xssfWorkbook=null;
String sheetName = "成绩";
//调用ExcelUtil的方法
System.out.println("创建表格:"+sheetName);
xssfWorkbook = ExcelUtil.createExcelFile(ExcelExercise.class, list, map, sheetName);
return xssfWorkbook;
}
@Override
public XSSFWorkbook CheckexportExcelInfo(String salaryDate, List<ExerciseCheck> list) throws InvocationTargetException, ClassNotFoundException, IntrospectionException, ParseException, IllegalAccessException {
List<ExcelBean> excel=new ArrayList<>();
Map<Integer,List<ExcelBean>> map=new ExcelClass().CheckcontentExcel();
XSSFWorkbook xssfWorkbook=null;
String sheetName = "疑似抄袭名单";
//调用ExcelUtil的方法
System.out.println("创建表格:"+sheetName);
xssfWorkbook = ExcelUtil.createExcelFile(ExerciseCheck.class, list, map, sheetName);
return xssfWorkbook;
}
}
7、ExcelUtil
package com.graduation.util;
import com.graduation.bean.ExcelBean;
import org.apache.http.client.utils.DateUtils;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.xssf.usermodel.*;
import java.beans.IntrospectionException;
import java.beans.PropertyDescriptor;
import java.io.InputStream;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.math.BigDecimal;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Map;
/**
* Excel导入导出工具类
* Created by ASUS on 2018/5/20
*
* @Authod K
*/
public class ExcelUtil {
private final static String excel2003L =".xls"; //2003- 版本的excel
private final static String excel2007U =".xlsx"; //2007+ 版本的excel
/**
* Excel导入
*/
public static List<List<Object>> getBankListByExcel(InputStream in, String fileName) throws Exception{
List<List<Object>> list = null;
//创建Excel工作薄
Workbook work = getWorkbook(in,fileName);
if(null == work){
throw new Exception("创建Excel工作薄为空！");
}
Sheet sheet = null;
Row row = null;
Cell cell = null;
list = new ArrayList<List<Object>>();
//遍历Excel中所有的sheet
for (int i = 0; i < work.getNumberOfSheets(); i++) {
sheet = work.getSheetAt(i);
if(sheet==null){continue;}
//遍历当前sheet中的所有行
//包涵头部，所以要小于等于最后一列数,这里也可以在初始值加上头部行数，以便跳过头部
for (int j = sheet.getFirstRowNum(); j <= sheet.getLastRowNum(); j++) {
//读取一行
row = sheet.getRow(j);
//去掉空行和表头
if(row==null||row.getFirstCellNum()==j){continue;}
//遍历所有的列
List<Object> li = new ArrayList<Object>();
for (int y = row.getFirstCellNum(); y < row.getLastCellNum(); y++) {
cell = row.getCell(y);
li.add(getCellValue(cell));
}
list.add(li);
}
}
return list;
}
/**
* 描述：根据文件后缀，自适应上传文件的版本
*/
public static Workbook getWorkbook(InputStream inStr,String fileName) throws Exception{
Workbook wb = null;
String fileType = fileName.substring(fileName.lastIndexOf("."));
if(excel2003L.equals(fileType)){
//2003-
wb = new HSSFWorkbook(inStr);
}else if(excel2007U.equals(fileType)){
//2007+
wb = new XSSFWorkbook(inStr);
}else{
throw new Exception("解析的文件格式有误！");
}
return wb;
}
/**
* 描述：对表格中数值进行格式化
*/
public static Object getCellValue(Cell cell){
Object value = null;
//格式化字符类型的数字
DecimalFormat df = new DecimalFormat("0");
//日期格式化
SimpleDateFormat sdf = new SimpleDateFormat("yyy-MM-dd");
//格式化数字
DecimalFormat df2 = new DecimalFormat("0.00");
switch (cell.getCellType()) {
case Cell.CELL_TYPE_STRING:
value = cell.getRichStringCellValue().getString();
break;
case Cell.CELL_TYPE_NUMERIC:
if("General".equals(cell.getCellStyle().getDataFormatString())){
value = df.format(cell.getNumericCellValue());
}else if("m/d/yy".equals(cell.getCellStyle().getDataFormatString())){
value = sdf.format(cell.getDateCellValue());
}else{
value = df2.format(cell.getNumericCellValue());
}
break;
case Cell.CELL_TYPE_BOOLEAN:
value = cell.getBooleanCellValue();
break;
case Cell.CELL_TYPE_BLANK:
value = "";
break;
default:
break;
}
return value;
}
/**
* 导入Excel表结束
* 导出Excel表开始
* @param sheetName 工作簿名称
* @param clazz 数据源model类型
* @param objs excel标题列以及对应model字段名
* @param map 标题列行数以及cell字体样式
*/
public static XSSFWorkbook createExcelFile(Class clazz, List objs, Map<Integer, List<ExcelBean>> map, String sheetName) throws
IllegalArgumentException,IllegalAccessException,InvocationTargetException,
ClassNotFoundException, IntrospectionException, ParseException {
// 创建新的Excel工作簿
XSSFWorkbook workbook = new XSSFWorkbook();
// 在Excel工作簿中建一工作表，其名为缺省值, 也可以指定Sheet名称
XSSFSheet sheet = workbook.createSheet(sheetName);
// 以下为excel的字体样式以及excel的标题与内容的创建，下面会具体分析;
//字体样式
createFont(workbook);
//创建标题（头）
createTableHeader(sheet, map);
//创建内容
createTableRows(sheet, map, objs, clazz);
return workbook;
}
private static XSSFCellStyle fontStyle;
private static XSSFCellStyle fontStyle2;
public static void createFont(XSSFWorkbook workbook) {
// 表头
fontStyle = workbook.createCellStyle();
XSSFFont font1 = workbook.createFont();
font1.setBoldweight(XSSFFont.BOLDWEIGHT_BOLD);
font1.setFontName("黑体");
// 设置字体大小
font1.setFontHeightInPoints((short) 10);
fontStyle.setFont(font1);
// 下边框
fontStyle.setBorderBottom(XSSFCellStyle.BORDER_THIN);
// 左边框
fontStyle.setBorderLeft(XSSFCellStyle.BORDER_THIN);
// 上边框
fontStyle.setBorderTop(XSSFCellStyle.BORDER_THIN);
// 右边框
fontStyle.setBorderRight(XSSFCellStyle.BORDER_THIN);
// 居中
fontStyle.setAlignment(XSSFCellStyle.ALIGN_CENTER);
// 内容
fontStyle2=workbook.createCellStyle();
XSSFFont font2 = workbook.createFont();
font2.setFontName("宋体");
// 设置字体大小
font2.setFontHeightInPoints((short) 10);
fontStyle2.setFont(font2);
// 下边框
fontStyle2.setBorderBottom(XSSFCellStyle.BORDER_THIN);
// 左边框
fontStyle2.setBorderLeft(XSSFCellStyle.BORDER_THIN);
// 上边框
fontStyle2.setBorderTop(XSSFCellStyle.BORDER_THIN);
// 右边框
fontStyle2.setBorderRight(XSSFCellStyle.BORDER_THIN);
// 居中
fontStyle2.setAlignment(XSSFCellStyle.ALIGN_CENTER);
}
/**
* 根据ExcelMapping 生成列头（多行列头）
*
* @param sheet 工作簿
* @param map 每行每个单元格对应的列头信息
*/
public static final void createTableHeader(XSSFSheet sheet, Map<Integer, List<ExcelBean>> map) {
//cell起始位置
int startIndex=0;
//cell终止位置
int endIndex=0;
for (Map.Entry<Integer, List<ExcelBean>> entry : map.entrySet()) {
XSSFRow row = sheet.createRow(entry.getKey());
List<ExcelBean> excels = entry.getValue();
for (int x = 0; x < excels.size(); x++) {
//合并单元格
if(excels.get(x).getCols()>1){
if(x==0){
endIndex+=excels.get(x).getCols()-1;
CellRangeAddress range=new CellRangeAddress(0,0,startIndex,endIndex);
sheet.addMergedRegion(range);
startIndex+=excels.get(x).getCols();
}else{
endIndex+=excels.get(x).getCols();
CellRangeAddress range=new CellRangeAddress(0,0,startIndex,endIndex);
sheet.addMergedRegion(range);
startIndex+=excels.get(x).getCols();
}
XSSFCell cell = row.createCell(startIndex-excels.get(x).getCols());
// 设置内容
cell.setCellValue(excels.get(x).getHeadTextName());
if (excels.get(x).getCellStyle() != null) {
// 设置格式
cell.setCellStyle(excels.get(x).getCellStyle());
}
cell.setCellStyle(fontStyle);
}else{
XSSFCell cell = row.createCell(x);
// 设置内容
cell.setCellValue(excels.get(x).getHeadTextName());
if (excels.get(x).getCellStyle() != null) {
// 设置格式
cell.setCellStyle(excels.get(x).getCellStyle());
}
cell.setCellStyle(fontStyle);
}
}
}
}
public static void createTableRows(XSSFSheet sheet, Map<Integer, List<ExcelBean>> map, List objs, Class clazz)
throws IllegalArgumentException, IllegalAccessException, InvocationTargetException, IntrospectionException,
ClassNotFoundException, ParseException {
int rowindex = map.size();
int maxKey = 0;
List<ExcelBean> ems = new ArrayList<>();
for (Map.Entry<Integer, List<ExcelBean>> entry : map.entrySet()) {
if (entry.getKey() > maxKey) {
maxKey = entry.getKey();
}
}
ems = map.get(maxKey);
List<Integer> widths = new ArrayList<Integer>(ems.size());
for (Object obj : objs) {
XSSFRow row = sheet.createRow(rowindex);
for (int i = 0; i < ems.size(); i++) {
ExcelBean em = (ExcelBean) ems.get(i);
// 获得get方法
PropertyDescriptor pd = new PropertyDescriptor(em.getPropertyName(), clazz);
Method getMethod = pd.getReadMethod();
Object rtn = getMethod.invoke(obj);
String value = "";
// 如果是日期类型进行转换
if (rtn != null) {
if (rtn instanceof Date) {
value = DateUtils.formatDate((Date)rtn,"yyyy-MM-dd");
} else if(rtn instanceof BigDecimal){
NumberFormat nf = new DecimalFormat("#,##0.00");
value=nf.format((BigDecimal)rtn).toString();
} else if((rtn instanceof Integer) && (Integer.valueOf(rtn.toString())<0 )){
value="--";
}else {
value = rtn.toString();
}
}
XSSFCell cell = row.createCell(i);
cell.setCellValue(value);
cell.setCellType(XSSFCell.CELL_TYPE_STRING);
cell.setCellStyle(fontStyle2);
// 获得最大列宽
int width = value.getBytes().length * 300;
// 还未设置，设置当前
if (widths.size() <= i) {
widths.add(width);
continue;
}
// 比原来大，更新数据
if (width > widths.get(i)) {
widths.set(i, width);
}
}
rowindex++;
}
// 设置列宽
for (int index = 0; index < widths.size(); index++) {
Integer width = widths.get(index);
width = width < 2500 ? 2500 : width + 300;
width = width > 10000 ? 10000 + 300 : width + 300;
sheet.setColumnWidth(index, width);
}
}
}
![解决POI导出Excel单元格内容换行问题[图]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)