https://blog.csdn.net/qq_28430851/article/details/80496125
git 地址最新实体注解的方式导出
https://github.com/weiwosuoai/spring-boot-tutorial/tree/master/spring-boot-excel
Java之——导出Excel通用工具类
https://blog.csdn.net/l1028386804/article/details/79659605
Java之——导入Excel通用工具类
https://blog.csdn.net/daochuwenziyao/article/details/77914826
package com.platform.utils;
import org.apache.poi.hssf.usermodel.*;
import org.apache.poi.hssf.util.HSSFColor;
import java.beans.PropertyDescriptor;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.text.SimpleDateFormat;
import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
-
@ClassName ExportExcelTooleUtil
-
@Description TODO
-
@Author mayn
-
@Date 2018/12/13 17:47
/
public class ExportExcelTooleUtil {
public String[] exportExcelHeader(Class clz){
Field fields[] = clz.getDeclaredFields();
String[] name = new String[fields.length];
try{
Field.setAccessible(fields, true);
for (int i = 1; i < fields.length; i++) {
name[i] = fields[i].getName();
System.out.println(name[i] + "-> ");
}
}
catch(Exception e){
e.printStackTrace();
}
return name;
}
public void exportExcel(Collection dataset, OutputStream out) {
exportExcel(“导出EXCEL文档”, null,null, dataset, out, “yyyy-MM-dd”);
}
public void exportExcel(String[] headers, Collection dataset,
OutputStream out) {
exportExcel(“导出EXCEL文档”, null,headers, dataset, out, “yyyy-MM-dd”);
}
public void exportExcel(String title, String[] headers,
Collection dataset, OutputStream out) {
exportExcel(title,null, headers, dataset, out, “yyyy-MM-dd”);
}
public void exportExcel(String title,String[] headerTitle, String[] headers,
Collection dataset, OutputStream out) {
exportExcel(title,headerTitle, headers, dataset, out, “yyyy-MM-dd”);
}
public void exportExcel(String[] headerTitle,String[] headers, Collection dataset,
OutputStream out, String pattern) {
exportExcel(“导出EXCEL文档”,headerTitle, headers, dataset, out, pattern);
}
/- 这是一个通用的方法,利用了JAVA的反射机制,可以将放置在JAVA集合中并且符号一定条件的数据以EXCEL 的形式输出到指定IO设备上
- @param title
-
表格标题名
- @param headerTitle
-
表格属性列名数组(标题)若为null,默认显示headers
- @param headers
-
表格属性列名数组
- @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,byte[](图片数据)
- @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"yyy-MM-dd"
*/
@SuppressWarnings({ “unchecked”, “deprecation”, “rawtypes” })
public void exportExcel(String title,String[] headerTitle, String[] headers,
Collection dataset, OutputStream out, String pattern) {
// 声明一个工作薄
HSSFWorkbook workbook = new HSSFWorkbook();
// 生成一个样式
HSSFCellStyle style = workbook.createCellStyle();
// 设置这些样式
style.setFillForegroundColor(HSSFColor.WHITE.index);
style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
style.setBorderBottom(HSSFCellStyle.BORDER_THIN);
style.setBorderLeft(HSSFCellStyle.BORDER_THIN);
style.setBorderRight(HSSFCellStyle.BORDER_THIN);
style.setBorderTop(HSSFCellStyle.BORDER_THIN);
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
// 生成一个字体
HSSFFont font = workbook.createFont();
font.setColor(HSSFColor.BLACK.index);
font.setFontHeightInPoints((short) 12);
font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
// 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(HSSFCellStyle.SOLID_FOREGROUND);
style2.setBorderBottom(HSSFCellStyle.BORDER_THIN);
style2.setBorderLeft(HSSFCellStyle.BORDER_THIN);
style2.setBorderRight(HSSFCellStyle.BORDER_THIN);
style2.setBorderTop(HSSFCellStyle.BORDER_THIN);
style2.setAlignment(HSSFCellStyle.ALIGN_CENTER);
style2.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);
// 生成另一个字体
HSSFFont font2 = workbook.createFont();
font2.setBoldweight(HSSFFont.BOLDWEIGHT_NORMAL);
// 把字体应用到当前的样式
style2.setFont(font2);
int sheetCount = 1000;
if (dataset.size() > sheetCount) {
Iterator it = dataset.iterator();
for (int i = 0; i <= 4; i++) {
int index = 0;
List list = new ArrayList();
while (it.hasNext()) {
index++;
if (index < sheetCount) {
list.add(it.next());
} else {
break;
}
}
try {
generateSheet(list, style, style2, workbook, pattern,headerTitle, headers,
title + “_” + (i + 1));
} catch (Exception e) {
e.printStackTrace();
}
}
} else {
try {
generateSheet(dataset, style, style2, workbook, pattern,headerTitle, headers,
title);
} catch (Exception e) {
e.printStackTrace();
}
}
try {
workbook.write(out);
} catch (IOException e) {
e.printStackTrace();
}finally{
try {
out.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
public void generateSheet(Collection dataset, HSSFCellStyle style,
HSSFCellStyle style2, HSSFWorkbook workbook, String pattern,
String[] headerTitle,String[] headers, String title) throws Exception {
// 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((short) 15);
// 声明一个画图的顶级管理器
HSSFPatriarch patriarch = sheet.createDrawingPatriarch();
// 定义注释的大小和位置,详见文档
HSSFComment comment = patriarch.createComment(new HSSFClientAnchor(0,
0, 0, 0, (short) 4, 2, (short) 6, 5));
// 设置注释内容
comment.setString(new HSSFRichTextString(“可以在POI中添加注释!”));
// 设置注释作者,当鼠标移动到单元格上是可以在状态栏中看到该内容.
comment.setAuthor(“author”);
// 产生表格标题行
HSSFRow row = sheet.createRow(0);
String[] showTitle = headers;
if(headerTitle.length>0) showTitle = headerTitle;
int indexTitle = 0;//excel列下标
for (short i = 0; i < showTitle.length; i++) {
if(showTitle[i].isEmpty()) continue;
HSSFCell cell = row.createCell(indexTitle);
cell.setCellStyle(style);
HSSFRichTextString text = new HSSFRichTextString(showTitle[i]);
cell.setCellValue(text);
indexTitle++;
}
if(dataset.isEmpty()) return;
// 遍历集合数据,产生数据行
Iterator it = dataset.iterator();
int index = 0;
while (it.hasNext()) {
index++;
row = sheet.createRow(index);
T t = (T) it.next();
Class tCls = t.getClass();
Method[] methods=t.getClass().getMethods();
// 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
Field[] fields=new Field[headers.length];for (short j = 0; j < headers.length; j++) { if(headers[j].length() == 0) continue; Field field1 = tCls.getDeclaredField(headers[j]); fields[j]=field1; } int indexText = 0;//excel列下标 for (short i = 0; i < fields.length; i++) { if(fields[i] == null) continue; Field field = fields[i]; HSSFCell cell = row.createCell(indexText); cell.setCellStyle(style2); String fieldName = field.getName(); PropertyDescriptor pd=new PropertyDescriptor(fieldName,tCls); Method getMethod=pd.getReadMethod(); Object value = getMethod.invoke(t, new Object[] {}); // 判断值的类型后进行强制类型转换 String textValue = null; if (value instanceof Boolean) { boolean bValue = (Boolean) value; textValue = "是"; if (!bValue) textValue = "否"; } else if (value instanceof Date) { Date date = (Date) value; SimpleDateFormat sdf = new SimpleDateFormat(pattern); textValue = sdf.format(date); } else if (value instanceof byte[]) { // 有图片时,设置行高为60px; row.setHeightInPoints(60); // 设置图片所在列宽度为80px,注意这里单位的一个换算 sheet.setColumnWidth(indexText, (short) (35.7 * 80)); // sheet.autoSizeColumn(i); byte[] bsValue = (byte[]) value; HSSFClientAnchor anchor = new HSSFClientAnchor(0, 0, 1023, 255, (short) 6, index, (short) 6, index); anchor.setAnchorType(2); patriarch.createPicture(anchor, workbook.addPicture( bsValue, HSSFWorkbook.PICTURE_TYPE_JPEG)); } else { // 其它数据类型都当作字符串简单处理 if (value == null) value = ""; textValue = value.toString(); } // 如果不是图片数据,就利用正则表达式判断textValue是否全部由数字组成 if (textValue != null) { Pattern p = Pattern.compile("^//d+(//.//d+)?{1}quot;"); Matcher matcher = p.matcher(textValue); if (matcher.matches()) { // 是数字当作double处理 cell.setCellValue(Double.parseDouble(textValue)); } else { HSSFRichTextString richString = new HSSFRichTextString( textValue); HSSFFont font3 = workbook.createFont(); font3.setColor(HSSFColor.BLACK.index); richString.applyFont(font3); cell.setCellValue(richString); } } indexText++; } }
}
public static void main(String[] args) throws Exception {
/* ExportExcelUtil ex = new ExportExcelUtil();
String[] headers = ex.exportExcelHeader(MenuVo.class);
List list = new ArrayList();//(List) hashMap.get(“list”);
String[] headerTitle = {“编号”,“名称”,“权限”};
String[] headers = {“id”,“name”,“privilege”};
OutputStream out = new FileOutputStream(“F://c.xls”);
ex.exportExcel(headers, list, out);
out.close();
JOptionPane.showMessageDialog(null, “导出成功!”);
System.out.println(“excel导出成功!”);*/
}
}
package com.platform.utils;
import jxl.Workbook;
import jxl.format.Alignment;
import jxl.format.Colour;
import jxl.format.UnderlineStyle;
import jxl.write.*;
import jxl.write.biff.RowsExceededException;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;
/**
- 导出EXCEL数据工具类
*/
public class ExportExcelUtil {
public static void customerFundsToExcel(String filePath,String fileName,String excelTile,String[] columnName){
File file = new File(filePath+fileName);
try {
WritableWorkbook wbook = Workbook.createWorkbook(file);
WritableSheet wsheet = wbook.createSheet(“sheet”, 0);
wsheet.getSettings().setDefaultColumnWidth(15);
WritableFont wfont = new WritableFont(WritableFont.ARIAL, 16,WritableFont.BOLD, false, UnderlineStyle.NO_UNDERLINE,Colour.RED);
WritableCellFormat wcfFC = new WritableCellFormat(wfont);
wcfFC.setAlignment(Alignment.CENTRE);
wsheet.addCell(new Label(3, 0, excelTile, wcfFC));
wfont = new WritableFont(WritableFont.ARIAL, 11,WritableFont.BOLD, false, UnderlineStyle.NO_UNDERLINE,Colour.WHITE);
wcfFC = new WritableCellFormat(wfont);
wcfFC.setBackground(Colour.TEAL);
wcfFC.setAlignment(Alignment.CENTRE);
for (int i = 0; i < columnName.length; i++) {
wsheet.addCell(new Label(i, 2, columnName[i].toString().toUpperCase(),wcfFC));
}
wfont = new WritableFont(WritableFont.ARIAL, 9,WritableFont.BOLD, false, UnderlineStyle.NO_UNDERLINE,Colour.BLACK);
wcfFC = new WritableCellFormat(wfont);
//wcfFC.setBackground(Colour.OLIVE_GREEN);
wcfFC.setAlignment(Alignment.CENTRE);
wbook.write(); // 写入文件
wbook.close();
} catch (IOException e) {
e.printStackTrace();
} catch (RowsExceededException e) {
e.printStackTrace();
} catch (WriteException e) {
e.printStackTrace();
}
}
public static void exportExcel(OutputStream os,List<Object> list,String[] heads,String excelTitle,String sheetName){
WritableWorkbook wbook = null;
try {
wbook = Workbook.createWorkbook(os);
ExportExcelUtil.getWritableWorkbook(wbook, list, heads,excelTitle,0,sheetName);
wbook.write();
} catch (IOException e) {
e.printStackTrace();
}finally{
try {
wbook.close();
} catch (IOException e) {
e.printStackTrace();
} catch (WriteException e) {
e.printStackTrace();
}
}
}
public static WritableWorkbook getWritableWorkbook(WritableWorkbook wbook,List<Object> list,String[] heads,String excelTitle,int titleCss,String sheetName){
WritableSheet wsheet = initExcelHead(wbook,heads,excelTitle,titleCss,sheetName);
WritableFont wfont = new WritableFont(WritableFont.ARIAL, 9,WritableFont.BOLD, false, UnderlineStyle.NO_UNDERLINE,Colour.BLACK);
WritableCellFormat wcfFC = new WritableCellFormat(wfont);
//wcfFC.setBackground(Colour.OLIVE_GREEN);
try {
wcfFC.setAlignment(Alignment.CENTRE);
for (int i = 0; i < list.size(); i++) {
Object[] obj = (Object[]) list.get(i);
for (int j = 0; j < heads.length; j++) {
wsheet.addCell(new Label(j, i+3,obj[j]==null?"":obj[j].toString() ,wcfFC));
}
}
} catch (RowsExceededException e) {
e.printStackTrace();
} catch (WriteException e) {
e.printStackTrace();
}
return wbook;
}
/* public static WritableWorkbook getWritableWorkbook(WritableWorkbook wbook,WritableCellFormat format_unlock,ScoreRecord entity,List list,String[] heads,String excelTitle,int titleCss,String sheetName){
// WritableSheet wsheet = initExcelHead(wbook,heads,excelTitle,titleCss,sheetName);
WritableSheet wsheet = wbook.createSheet(sheetName, 0);
wsheet.getSettings().setDefaultColumnWidth(15);
WritableFont wfont = new WritableFont(WritableFont.ARIAL, 16,WritableFont.BOLD, false, UnderlineStyle.NO_UNDERLINE,Colour.RED);
WritableCellFormat wcfFC = new WritableCellFormat(wfont);
try {
wcfFC.setAlignment(Alignment.CENTRE);
wsheet.mergeCells(0, 0, heads.length-1, 1);
wsheet.addCell(new Label(0, 0, excelTitle, wcfFC));
wfont = new WritableFont(WritableFont.ARIAL, 14,WritableFont.NO_BOLD, false, UnderlineStyle.NO_UNDERLINE,Colour.BLACK);
wcfFC = new WritableCellFormat(wfont);
wcfFC.setAlignment(Alignment.LEFT);
wsheet.mergeCells(5, 2, 9, 2);
wsheet.addCell(new Label(5, 2, "分数只能输入数字,作业占14%,考勤占16%,考试一占70%", wcfFC));
//wcfFC.setAlignment(Alignment.RIGHT);
wsheet.mergeCells(10, 2, 12, 2);
wsheet.addCell(new Label(10, 2, " "+entity.getXxxs()+" "+entity.getCc()+" 考试时间(如20140505):",wcfFC));
wsheet.addCell(new Label(13, 2,entity.getTestTime()==null?"":entity.getTestTime() ,wcfFC));
wsheet.getWritableCell(13, 2).setCellFormat(format_unlock);
// wsheet.addCell(new Label(11, 2, "学习形式: "+entity.getXxxs(),wcfFC));
// wsheet.addCell(new Label(13, 2, "层次: "+entity.getCc(),wcfFC));
wfont = new WritableFont(WritableFont.ARIAL, 11,WritableFont.BOLD, false, UnderlineStyle.NO_UNDERLINE,Colour.WHITE);
wcfFC = new WritableCellFormat(wfont);
wcfFC.setBackground(Colour.TEAL);
wcfFC.setAlignment(Alignment.CENTRE);
for (int i = 0; i < heads.length; i++) {
wsheet.addCell(new Label(i, 3, heads[i].toString().toUpperCase(),wcfFC));
//隐藏列
wsheet.setColumnView(0, 0);
wsheet.setColumnView(1, 0);
wsheet.setColumnView(2, 0);
wsheet.setColumnView(3, 0);
wsheet.setColumnView(4, 0);
}
} catch (RowsExceededException e) {
e.printStackTrace();
} catch (WriteException e) {
e.printStackTrace();
}
wfont = new WritableFont(WritableFont.ARIAL, 9,WritableFont.BOLD, false, UnderlineStyle.NO_UNDERLINE,Colour.BLACK);
wcfFC = new WritableCellFormat(wfont);
//wcfFC.setBackground(Colour.OLIVE_GREEN);
try {
wcfFC.setAlignment(Alignment.CENTRE);
for (int i = 0; i < list.size(); i++) {
Object[] obj = (Object[]) list.get(i);
for (int j = 0; j < heads.length; j++) {
//列,行
//wcfFC.setBorder(Border.ALL, BorderLineStyle.THIN);//线条
// if(j==8){
// jxl.write.NumberFormat nf = new jxl.write.NumberFormat("#.##"); //设置数字格式
// jxl.write.WritableCellFormat wcfN = new jxl.write.WritableCellFormat(nf); //设置表单格式
// //jxl.write.Number labelNF = new jxl.write.Number(1, 1, 3.1415926, wcfN); //格式化数值
// wsheet.addCell(new Label(j, i+4,obj[j]==null?"":obj[j].toString(),wcfN));
// }else{
wsheet.addCell(new Label(j, i+4,obj[j]==null?"":obj[j].toString() ,wcfFC));
// }
if(j!=0&&j!=1&&j!=2&&j!=3&&j!=4&&j!=5&&j!=6&&j!=7){
wsheet.getWritableCell(j, i+4).setCellFormat(format_unlock);
}
}
}
wsheet.setProtected(true);
} catch (RowsExceededException e) {
e.printStackTrace();
} catch (WriteException e) {
e.printStackTrace();
}
return wbook;
}
*/ public static WritableSheet initExcelHead(WritableWorkbook wbook,String[] heads,String excelTitle,int titleCss,String sheetName){
WritableSheet wsheet = wbook.createSheet(sheetName, 0);
wsheet.getSettings().setDefaultColumnWidth(15);
WritableFont wfont = new WritableFont(WritableFont.ARIAL, 16,WritableFont.BOLD, false, UnderlineStyle.NO_UNDERLINE,Colour.RED);
WritableCellFormat wcfFC = new WritableCellFormat(wfont);
try {
wcfFC.setAlignment(Alignment.CENTRE);
wsheet.mergeCells(0, 0, heads.length-1, 1);
wsheet.addCell(new Label(0, 0, excelTitle, wcfFC));
wfont = new WritableFont(WritableFont.ARIAL, 11,WritableFont.BOLD, false, UnderlineStyle.NO_UNDERLINE,Colour.WHITE);
wcfFC = new WritableCellFormat(wfont);
wcfFC.setBackground(Colour.TEAL);
wcfFC.setAlignment(Alignment.CENTRE);
for (int i = 0; i < heads.length; i++) {
wsheet.addCell(new Label(i, 2, heads[i].toString().toUpperCase(),wcfFC));
}
} catch (RowsExceededException e) {
e.printStackTrace();
} catch (WriteException e) {
e.printStackTrace();
}
return wsheet;
}
public static void main(String[] args) {
WritableWorkbook wbook = null;
try {
List list = new ArrayList();
list.add(new String[]{"1","2","3","4","5","6","7"});
list.add(new String[]{"11","22","33","44","55","66","77"});
wbook = Workbook.createWorkbook(new File("d:\\aa.xls"));
wbook = new ExportExcelUtil().getWritableWorkbook(wbook, list, new String[]{"客户编码","客户名称","可用资金(元)","保证金冻结(元)","风控冻结(元)","本期入金(元)","本期出金(元)"}, "客户资金列表信息",0, "稽核日志");
wbook.write();
} catch (IOException e) {
e.printStackTrace();
}finally{
try {
wbook.close();
} catch (IOException e) {
e.printStackTrace();
} catch (WriteException e) {
e.printStackTrace();
}
}
}
}