Excel导入poi、导出poi
程序员文章站
2022-07-13 12:43:09
...
Excel导入poi、导出poi
依赖Jar包
<!-- 处理Excel2003 -->
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.17</version>
</dependency>
<!-- 处理Excel2007 -->
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.17</version>
</dependency>
ExcelSheetPO.java
package com.yujiantong.util.excel;
import java.util.List;
/**
* 定义表格的数据对象
* @date 2019年01月20日
*/
public class ExcelSheetPO {
/**
* sheet的名称
*/
private String sheetName;
/**
* 表格标题
*/
private String title;
/**
* 头部标题集合
*/
private String[] headers;
/**
* 数据集合
*/
private List<List<Object>> dataList;
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String[] getHeaders() {
return headers;
}
public void setHeaders(String[] headers) {
this.headers = headers;
}
public List<List<Object>> getDataList() {
return dataList;
}
public void setDataList(List<List<Object>> dataList) {
this.dataList = dataList;
}
public String getSheetName() {
return sheetName;
}
public void setSheetName(String sheetName) {
this.sheetName = sheetName;
}
}
ExcelVersion.java
package com.yujiantong.util.excel;
/**
* excel版本枚举
*
* @date 2019年01月20日
*/
public enum ExcelVersion {
/**
* 虽然V2007版本支持最大支持1048575 * 16383 ，
* V2003版支持65535*255
* 但是在实际应用中如果使用如此庞大的对象集合会导致内存溢出，
* 因此这里限制最大为10000*100，如果还要加大建议先通过单元测试进行性能测试。
* 1000*100 全部导出预计时间为27s左右
*/
V2003(".xls", 10000, 100), V2007(".xlsx", 100, 100);
private String suffix;
private int maxRow;
private int maxColumn;
ExcelVersion(String suffix, int maxRow, int maxColumn) {
this.suffix = suffix;
this.maxRow = maxRow;
this.maxColumn = maxColumn;
}
public String getSuffix() {
return this.suffix;
}
public int getMaxRow() {
return maxRow;
}
public void setMaxRow(int maxRow) {
this.maxRow = maxRow;
}
public int getMaxColumn() {
return maxColumn;
}
public void setMaxColumn(int maxColumn) {
this.maxColumn = maxColumn;
}
public void setSuffix(String suffix) {
this.suffix = suffix;
}
}
ImportExcelSheetUtil .java
package com.yujiantong.util.excel;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Type;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Date;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import javax.servlet.http.HttpServletRequest;
import org.apache.commons.beanutils.BeanUtils;
import org.apache.commons.beanutils.ConvertUtils;
import org.apache.commons.beanutils.locale.converters.DateLocaleConverter;
import org.apache.commons.collections.CollectionUtils;
import org.apache.poi.hssf.usermodel.HSSFDateUtil;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.BorderStyle;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.CellValue;
import org.apache.poi.ss.usermodel.Font;
import org.apache.poi.ss.usermodel.FormulaEvaluator;
import org.apache.poi.ss.usermodel.HorizontalAlignment;
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.ss.util.WorkbookUtil;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.slf4j.LoggerFactory;
import org.springframework.web.multipart.MultipartFile;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.bofu.bkp.po.fillin.CFillinAchievement;
import com.bofu.bkp.po.fillin.CFillinVehicle;
import com.bofu.bkp.po.fillin.CFillinVisit;
import com.bofu.bkp.service.store.StoreServiceImpl;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.mongodb.diagnostics.logging.Logger;
/**
* excel工具类 提供读取和写入excel的功能
*
* @date 2019年01月20日
*/
@SuppressWarnings("all")
public class ImportExcelSheetUtil {
private final static String xls = "xls";
private final static String xlsx = "xlsx";
/**
* 读取excel文件里面的内容 支持日期，数字，字符，函数公式，布尔类型
*
* @param file
* @param rowCount
* @param columnCount
* @return
* @throws FileNotFoundException
* @throws IOException
*/
public static List<ExcelSheetPO> readExcel(MultipartFile file, Integer rowCount, Integer columnCount)
throws FileNotFoundException, IOException {
// 根据后缀名称判断excel的版本
//String extName = FileUtil.getFileExtName(file);
String extName = file.getOriginalFilename();
Workbook wb = null;
//获取excel文件的io流
InputStream is = file.getInputStream();
if (extName.endsWith(xls)) {
wb = new HSSFWorkbook(is);
} else if (extName.endsWith(xlsx)) {
wb = new XSSFWorkbook(is);
} else {
// 无效后缀名称，这里之能保证excel的后缀名称，不能保证文件类型正确，不过没关系，在创建Workbook的时候会校验文件格式
throw new IllegalArgumentException("Invalid excel version");
}
// 开始读取数据
List<ExcelSheetPO> sheetPOs = new ArrayList<>();
// 解析sheet
for (int i = 0; i < wb.getNumberOfSheets(); i++) {
Sheet sheet = wb.getSheetAt(i);
List<List<Object>> dataList = new ArrayList<>();
ExcelSheetPO sheetPO = new ExcelSheetPO();
sheetPO.setSheetName(sheet.getSheetName());
sheetPO.setDataList(dataList);
int readRowCount = 0;
if (rowCount == null || rowCount > sheet.getPhysicalNumberOfRows()) {
readRowCount = sheet.getPhysicalNumberOfRows();
} else {
readRowCount = rowCount;
}
// 解析sheet 的行
for (int j = sheet.getFirstRowNum(); j < readRowCount; j++) {
Row row = sheet.getRow(j);
if (row == null) {
continue;
}
if (row.getFirstCellNum() < 0) {
continue;
}
int readColumnCount = 0;
if (columnCount == null || columnCount > row.getLastCellNum()) {
readColumnCount = (int) row.getLastCellNum();
} else {
readColumnCount = columnCount;
}
List<Object> rowValue = new LinkedList<Object>();
// 解析sheet 的列
for (int k = 0; k < readColumnCount; k++) {
Cell cell = row.getCell(k);
rowValue.add(getCellValue(wb, cell));
}
dataList.add(rowValue);
}
sheetPOs.add(sheetPO);
}
return sheetPOs;
}
private static Object getCellValue(Workbook wb, Cell cell) {
Object columnValue = null;
if (cell != null) {
switch (cell.getCellType()) {
case Cell.CELL_TYPE_STRING:
columnValue = cell.getStringCellValue();
/*if("是".equals(columnValue)){
columnValue = 1;
}else if("否".equals(columnValue)){
columnValue = 2;
}else{
columnValue = cell.getStringCellValue();
}*/
break;
case Cell.CELL_TYPE_NUMERIC:
if (HSSFDateUtil.isCellDateFormatted(cell)) {// 处理日期格式、时间格式
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");// 格式化日期字符串
Date date = cell.getDateCellValue();
//columnValue = sdf.format(date);
String format = sdf.format(date);
if(format.contains("1899")){
SimpleDateFormat sd = new SimpleDateFormat("HH:mm:ss");// 格式化日期字符串
columnValue = sd.format(date).toString();
}else{
columnValue = sdf.format(date);
}
} else {
double value = cell.getNumericCellValue();
CellStyle style = cell.getCellStyle();
DecimalFormat format = new DecimalFormat();
String temp = style.getDataFormatString();
// 单元格设置成常规
if (temp.equals("General")) {
format.applyPattern("#");
}
if(value % 1 == 0){// 是这个整数，小数点后面是0
columnValue = format.format(value);
}else{//不是整数，小数点后面不是0
columnValue = value + "";//format.format(value);
}
if (columnValue.toString().indexOf(",") >= 0) {
columnValue = columnValue.toString().replace(",", "");
}
}
break;
case Cell.CELL_TYPE_BOOLEAN:
columnValue = cell.getBooleanCellValue();
break;
case Cell.CELL_TYPE_BLANK:
columnValue = "";
break;
case Cell.CELL_TYPE_FORMULA:
// 格式单元格
FormulaEvaluator evaluator = wb.getCreationHelper().createFormulaEvaluator();
evaluator.evaluateFormulaCell(cell);
CellValue cellValue = evaluator.evaluate(cell);
columnValue = cellValue.getNumberValue();
break;
default:
columnValue = cell.toString();
}
}
return columnValue;
}
/**
* 将list按行写入到txt文件中(一般导入数据时过滤出错的信息，写入文本)
* @param strings
* @param path
* @throws Exception
*/
public static void writeFileContext(List<Map<String,Object>> errorMessage,HttpServletRequest request) throws Exception {
String p = request.getSession().getServletContext().getRealPath("");
String path ="/WEB-INF/static/message/erroMessage.txt";
File file = new File(p+path);
//如果没有文件就创建
if (!file.isFile()) {
file.createNewFile();
}
Writer writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(p+path), "utf-8"));
for (Map<String, Object> map : errorMessage) {
String str = "第"+map.get("errorRow").toString()+"行："+map.get("errorString").toString().trim();
writer.write(str + "\r\n");
}
writer.flush();
writer.close();
}
}
以上三个类都是导入excel用到的，下面介绍excel导出时所用到的一个类
ExportExcelUtil.java
package com.tong.util;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.text.SimpleDateFormat;
import java.util.Collection;
import java.util.Date;
import java.util.Iterator;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
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.HSSFRichTextString;
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.hssf.util.HSSFColor;
import org.apache.poi.ss.usermodel.BorderStyle;
import org.apache.poi.ss.usermodel.FillPatternType;
import org.apache.poi.ss.usermodel.HorizontalAlignment;
import org.apache.poi.ss.usermodel.VerticalAlignment;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFCellStyle;
import org.apache.poi.xssf.usermodel.XSSFColor;
import org.apache.poi.xssf.usermodel.XSSFFont;
import org.apache.poi.xssf.usermodel.XSSFRichTextString;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.util.StringUtils;
/**
* 导出Excel
* @author Tong
*
* @param <T>
*/
public class ExportExcelUtil<T>{
// 2007 版本以上 最大支持1048576行
public final static String EXCEl_FILE_2007 = "2007";
// 2003 版本 最大支持65536 行
public final static String EXCEL_FILE_2003 = "2003";
/**
* <p>
* 导出无头部标题行Excel <br>
* 时间格式默认：yyyy-MM-dd hh:mm:ss <br>
* </p>
*
* @param title 表格标题
* @param dataset 数据集合
* @param out 输出流
* @param version 2003 或者 2007，不传时默认生成2003版本
*/
public void exportExcel(String title, Collection<T> dataset, OutputStream out, String version) {
if(StringUtils.isEmpty(version) || EXCEL_FILE_2003.equals(version.trim())){
exportExcel2003(title, null, dataset, out, "yyyy-MM-dd HH:mm:ss");
}else{
exportExcel2007(title, null, dataset, out, "yyyy-MM-dd HH:mm:ss");
}
}
/**
* <p>
* 导出带有头部标题行的Excel <br>
* 时间格式默认：yyyy-MM-dd hh:mm:ss <br>
* </p>
*
* @param title 表格标题
* @param headers 头部标题集合
* @param dataset 数据集合
* @param out 输出流
* @param version 2003 或者 2007，不传时默认生成2003版本
*/
public void exportExcel(String title,String[] headers, Collection<T> dataset, OutputStream out,String version) {
if(StringUtils.isEmpty(version) || EXCEL_FILE_2003.equals(version.trim())){
exportExcel2003(title, headers, dataset, out, "yyyy-MM-dd HH:mm:ss");
}else{
exportExcel2007(title, headers, dataset, out, "yyyy-MM-dd HH:mm:ss");
}
}
/**
* <p>
* 通用Excel导出方法,利用反射机制遍历对象的所有字段，将数据写入Excel文件中 <br>
* 此版本生成2007以上版本的文件 (文件后缀：xlsx)
* </p>
*
* @param title
* 表格标题名
* @param headers
* 表格头部标题集合
* @param dataset
* 需要显示的数据集合,集合中一定要放置符合JavaBean风格的类的对象。此方法支持的
* JavaBean属性的数据类型有基本数据类型及String,Date
* @param out
* 与输出设备关联的流对象，可以将EXCEL文档导出到本地文件或者网络中
* @param pattern
* 如果有时间数据，设定输出格式。默认为"yyyy-MM-dd hh:mm:ss"
*/
@SuppressWarnings({ "unchecked", "rawtypes" })
public void exportExcel2007(String title, String[] headers, Collection<T> dataset, OutputStream out, String pattern) {
// 声明一个工作薄
XSSFWorkbook workbook = new XSSFWorkbook();
// 生成一个表格
XSSFSheet sheet = workbook.createSheet(title);
// 设置表格默认列宽度为15个字节
sheet.setDefaultColumnWidth(20);
// 生成一个样式
XSSFCellStyle style = workbook.createCellStyle();
// 设置这些样式
style.setFillForegroundColor(new XSSFColor(java.awt.Color.gray));
style.setFillPattern(FillPatternType.SOLID_FOREGROUND);
style.setBorderBottom(BorderStyle.THIN);
style.setBorderLeft(BorderStyle.THIN);
style.setBorderRight(BorderStyle.THIN);
style.setBorderTop(BorderStyle.THIN);
style.setAlignment(HorizontalAlignment.CENTER);
// 生成一个字体
XSSFFont font = workbook.createFont();
font.setBold(true);
font.setFontName("宋体");
font.setColor(new XSSFColor(java.awt.Color.BLACK));
font.setFontHeightInPoints((short) 13);
// 把字体应用到当前的样式
style.setFont(font);
// 生成并设置另一个样式
XSSFCellStyle style2 = workbook.createCellStyle();
style2.setFillForegroundColor(new XSSFColor(java.awt.Color.WHITE));
style2.setFillPattern(FillPatternType.SOLID_FOREGROUND);
style2.setBorderBottom(BorderStyle.THIN);
style2.setBorderLeft(BorderStyle.THIN);
style2.setBorderRight(BorderStyle.THIN);
style2.setBorderTop(BorderStyle.THIN);
style2.setAlignment(HorizontalAlignment.CENTER);
style2.setVerticalAlignment(VerticalAlignment.CENTER);
// 生成另一个字体
XSSFFont font2 = workbook.createFont();
font2.setBold(false);
// 把字体应用到当前的样式
style2.setFont(font2);
// 产生表格标题行
XSSFRow row = sheet.createRow(0);
XSSFCell cellHeader;
for (int i = 0; i < headers.length; i++) {
cellHeader = row.createCell(i);
cellHeader.setCellStyle(style);
cellHeader.setCellValue(new XSSFRichTextString(headers[i]));
}
// 遍历集合数据，产生数据行
Iterator<T> it = dataset.iterator();
int index = 0;
T t;
Field[] fields;
Field field;
XSSFRichTextString richString;
Pattern p = Pattern.compile("^//d+(//.//d+)?$");
Matcher matcher;
String fieldName;
String getMethodName;
XSSFCell cell;
Class tCls;
Method getMethod;
Object value;
String textValue;
SimpleDateFormat sdf = new SimpleDateFormat(pattern);
while (it.hasNext()) {
index++;
row = sheet.createRow(index);
t = (T) it.next();
// 利用反射，根据JavaBean属性的先后顺序，动态调用getXxx()方法得到属性值
fields = t.getClass().getDeclaredFields();
for (int i = 0; i < fields.length; i++) {
cell = row.createCell(i);
cell.setCellStyle(style2);
field = fields[i];
fieldName = field.getName();
getMethodName = "get" + fieldName.substring(0, 1).toUpperCase()
+ fieldName.substring(1);
try {
tCls = t.getClass();
getMethod = tCls.getMethod(getMethodName, new Class[] {});
value = getMethod.invoke(t, new Object[] {});
// 判断值的类型后进行强制类型转换
textValue = null;
if (value instanceof Integer) {
cell.setCellValue((Integer) value);
} else if (value instanceof Float) {
textValue = String.valueOf((Float) value);
cell.setCellValue(textValue);
} else if (value instanceof Double) {
textValue = String.valueOf((Double) value);
cell.setCellValue(textValue);
} else if (value instanceof Long) {
cell.setCellValue((Long) value);
}
if (value instanceof Boolean) {
textValue = "是";
if (!(Boolean) value) {
textValue = "否";
}
} else if (value instanceof Date) {
textValue = sdf.format((Date) value);
} else {
// 其它数据类型都当作字符串简单处理
if (value != null) {
textValue = value.toString();
}
}
if (textValue != null) {
matcher = p.matcher(textValue);
if (matcher.matches()) {
// 是数字当作double处理
cell.setCellValue(Double.parseDouble(textValue));
} else {
richString = new XSSFRichTextString(textValue);
cell.setCellValue(richString);
}
}
} catch (SecurityException e) {
e.printStackTrace();
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
} finally {
// 清理资源
}
}
}
try {
workbook.write(out);
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* <p>
* 通用Excel导出方法,利用反射机制遍历对象的所有字段，将数据写入Excel文件中 <br>
* 此方法生成2003版本的excel,文件名后缀：xls <br>
* </p>
*
* @param title
* 表格标题名
* @param headers
* 表格头部标题集合
* @param dataset
* 需要显示的数据集合,集合中一定要放置符合JavaBean风格的类的对象。此方法支持的
* JavaBean属性的数据类型有基本数据类型及String,Date
* @param out
* 与输出设备关联的流对象，可以将EXCEL文档导出到本地文件或者网络中
* @param pattern
* 如果有时间数据，设定输出格式。默认为"yyyy-MM-dd hh:mm:ss"
*/
@SuppressWarnings({ "unchecked", "rawtypes" })
public void exportExcel2003(String title, String[] headers, Collection<T> dataset, OutputStream out, String pattern) {
// 声明一个工作薄
HSSFWorkbook workbook = new HSSFWorkbook();
// 生成一个表格
HSSFSheet sheet = workbook.createSheet(title);
// 设置表格默认列宽度为15个字节
sheet.setDefaultColumnWidth(20);
// 生成一个样式
HSSFCellStyle style = workbook.createCellStyle();
// 设置这些样式
style.setFillForegroundColor(HSSFColor.GREY_50_PERCENT.index);
style.setFillPattern(FillPatternType.SOLID_FOREGROUND);
style.setBorderBottom(BorderStyle.THIN);
style.setBorderLeft(BorderStyle.THIN);
style.setBorderRight(BorderStyle.THIN);
style.setBorderTop(BorderStyle.THIN);
style.setAlignment(HorizontalAlignment.CENTER);
// 生成一个字体
HSSFFont font = workbook.createFont();
font.setBold(true);
font.setFontName("宋体");
font.setColor(HSSFColor.WHITE.index);
font.setFontHeightInPoints((short) 13);
// 把字体应用到当前的样式
style.setFont(font);
// 生成并设置另一个样式
HSSFCellStyle style2 = workbook.createCellStyle();
style2.setFillForegroundColor(HSSFColor.WHITE.index);
style2.setFillPattern(FillPatternType.SOLID_FOREGROUND);
style2.setBorderBottom(BorderStyle.THIN);
style2.setBorderLeft(BorderStyle.THIN);
style2.setBorderRight(BorderStyle.THIN);
style2.setBorderTop(BorderStyle.THIN);
style2.setAlignment(HorizontalAlignment.CENTER);
style2.setVerticalAlignment(VerticalAlignment.CENTER);
// 生成另一个字体
HSSFFont font2 = workbook.createFont();
font2.setBold(false);
// 把字体应用到当前的样式
style2.setFont(font2);
// 产生表格标题行
HSSFRow row = sheet.createRow(0);
HSSFCell cellHeader;
for (int i = 0; i < headers.length; i++) {
cellHeader = row.createCell(i);
cellHeader.setCellStyle(style);
cellHeader.setCellValue(new HSSFRichTextString(headers[i]));
}
// 遍历集合数据，产生数据行
Iterator<T> it = dataset.iterator();
int index = 0;
T t;
Field[] fields;
Field field;
HSSFRichTextString richString;
Pattern p = Pattern.compile("^//d+(//.//d+)?$");
Matcher matcher;
String fieldName;
String getMethodName;
HSSFCell cell;
Class tCls;
Method getMethod;
Object value;
String textValue;
SimpleDateFormat sdf = new SimpleDateFormat(pattern);
while (it.hasNext()) {
index++;
row = sheet.createRow(index);
t = (T) it.next();
// 利用反射，根据JavaBean属性的先后顺序，动态调用getXxx()方法得到属性值
fields = t.getClass().getDeclaredFields();
for (int i = 0; i < fields.length; i++) {
cell = row.createCell(i);
cell.setCellStyle(style2);
field = fields[i];
fieldName = field.getName();
getMethodName = "get" + fieldName.substring(0, 1).toUpperCase()
+ fieldName.substring(1);
try {
tCls = t.getClass();
getMethod = tCls.getMethod(getMethodName, new Class[] {});
value = getMethod.invoke(t, new Object[] {});
// 判断值的类型后进行强制类型转换
textValue = null;
if (value instanceof Integer) {
cell.setCellValue((Integer) value);
} else if (value instanceof Float) {
textValue = String.valueOf((Float) value);
cell.setCellValue(textValue);
} else if (value instanceof Double) {
textValue = String.valueOf((Double) value);
cell.setCellValue(textValue);
} else if (value instanceof Long) {
cell.setCellValue((Long) value);
}
if (value instanceof Boolean) {
textValue = "是";
if (!(Boolean) value) {
textValue = "否";
}
} else if (value instanceof Date) {
textValue = sdf.format((Date) value);
} else {
// 其它数据类型都当作字符串简单处理
if (value != null) {
textValue = value.toString();
}
}
if (textValue != null) {
matcher = p.matcher(textValue);
if (matcher.matches()) {
// 是数字当作double处理
cell.setCellValue(Double.parseDouble(textValue));
} else {
richString = new HSSFRichTextString(textValue);
cell.setCellValue(richString);
}
}
} catch (SecurityException e) {
e.printStackTrace();
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
} finally {
// 清理资源
}
}
}
try {
workbook.write(out);
} catch (IOException e) {
e.printStackTrace();
}
}
}
上一篇： Poi excel