1、update pkg path to com.lxyer
2、update bug for cell only 'NUMERIC' can't read 3、give up use poi's old api
This commit is contained in:
107
src/com/lxyer/excel/ExcelExportKit.java
Normal file
107
src/com/lxyer/excel/ExcelExportKit.java
Normal file
File diff suppressed because one or more lines are too long
345
src/com/lxyer/excel/poi/ExcelKit.java
Normal file
345
src/com/lxyer/excel/poi/ExcelKit.java
Normal file
@@ -0,0 +1,345 @@
|
||||
package com.lxyer.excel.poi;
|
||||
|
||||
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
|
||||
import org.apache.poi.poifs.filesystem.OfficeXmlFileException;
|
||||
import org.apache.poi.ss.usermodel.*;
|
||||
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
|
||||
|
||||
import javax.servlet.http.HttpServletRequest;
|
||||
import javax.servlet.http.HttpServletResponse;
|
||||
import java.io.File;
|
||||
import java.io.FileInputStream;
|
||||
import java.io.IOException;
|
||||
import java.io.OutputStream;
|
||||
import java.lang.reflect.Field;
|
||||
import java.text.SimpleDateFormat;
|
||||
import java.util.*;
|
||||
|
||||
/**
|
||||
* 使用poi报表导出工具类
|
||||
* 把poi的一个调用接口抽出来，便于导出功能的管理
|
||||
* @author LiangXianYou lxy208@126.com
|
||||
* @param
|
||||
*
|
||||
*/
|
||||
public class ExcelKit {
|
||||
|
||||
/**
|
||||
* <b>导出list中map做载体的数据到excel</b><br>
|
||||
* 参数说明：<br>
|
||||
* list:存放了Map数据的集合<br>
|
||||
* hdNames:表头列名<br>
|
||||
* hds:对应表头的数据KEY<br>
|
||||
* xlsName:导出文件名<br>
|
||||
* @author LiangXianYou
|
||||
* @date 2015-6-25 上午10:22:51
|
||||
*/
|
||||
public static <T> boolean exportByMap(List<Map<String, Object>> list, String[] hdNames, String[] hds, String xlsName, HttpServletRequest request, HttpServletResponse response) throws Exception{
|
||||
|
||||
Workbook wb = new XSSFWorkbook(); //创建工作薄
|
||||
Sheet sheet = wb.createSheet(); //创建工作表
|
||||
sheet.autoSizeColumn(( short ) 0 ); //自适应宽度
|
||||
//写入表头---Excel的第一行数据
|
||||
Row nRow = sheet.createRow(0); //创建行
|
||||
for(int i=0;i<hdNames.length;i++){
|
||||
Cell nCell = nRow.createCell(i); //创建单元格
|
||||
nCell.setCellValue(hdNames[i]);
|
||||
}
|
||||
|
||||
//写入每一行数据---一条记录就是一行数据
|
||||
for(int i=0;i<list.size();i++){
|
||||
for(int j=0;j<hds.length;j++){
|
||||
Object o = list.get(i).get(hds[j]); //得到列的值
|
||||
data2Excel(sheet, o, i+1, j); //将值写入Excel
|
||||
}
|
||||
}
|
||||
return downloadExcel(wb, xlsName, request, response);
|
||||
}
|
||||
|
||||
/**
|
||||
* Excels导出多个sheet
|
||||
* @author LiangXianYou
|
||||
* @date 2015-6-16 下午5:56:56
|
||||
*/
|
||||
//map:data,sheetName,hds,hdNames,xlsName;request,response
|
||||
public static <T> boolean exportExcels(List<Map<String, Object>> list,String xlsName, HttpServletRequest request, HttpServletResponse response) throws Exception{
|
||||
|
||||
Workbook wb = new XSSFWorkbook(); //创建工作薄
|
||||
for(int i=0;i<list.size();i++){
|
||||
Map<String, Object> map = list.get(i);
|
||||
Sheet sheet = wb.createSheet(); //创建工作表
|
||||
String sheetName = (String) map.get("sheetName");
|
||||
wb.setSheetName(i, sheetName);
|
||||
//写入表头---Excel的第一行数据
|
||||
Row nRow = sheet.createRow(0); //创建行
|
||||
String[] hdNames = (String[]) map.get("hdNames");
|
||||
for(int j=0;j<hdNames.length;j++){
|
||||
Cell nCell = nRow.createCell(j); //创建单元格
|
||||
nCell.setCellValue(hdNames[j]);
|
||||
}
|
||||
|
||||
//写入每一行数据---一条记录就是一行数据
|
||||
@SuppressWarnings("unchecked")
|
||||
List<T> data = (List<T>) map.get("data");
|
||||
String[] hds = (String[]) map.get("hds");
|
||||
for(int j=0;j<data.size();j++){
|
||||
for(int k=0;k<hds.length;k++){
|
||||
Object o = getFieldValue(data.get(j), hds[k]); //得到列的值
|
||||
data2Excel(sheet, o, j+1, k); //将值写入Excel
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return downloadExcel(wb, xlsName, request, response);
|
||||
}
|
||||
|
||||
/**
|
||||
* 参数说明：
|
||||
* list：list数据集合
|
||||
* hdNames：表头需要显示的名称
|
||||
* hds：表头对应的对象属性名称，和 hdNames一一对应
|
||||
* xlsName：导出Excel的预定义名称
|
||||
* request: HttpServletRequest
|
||||
* response：HttpServletResponse
|
||||
* 通过数据构建Excel
|
||||
* @author LiangXianYou
|
||||
* @throws Exception
|
||||
* @date 2015-3-13 上午11:00:30
|
||||
*/
|
||||
public static <T> boolean exportExcel(List<T> list, String[] hdNames, String[] hds, String xlsName, HttpServletRequest request, HttpServletResponse response) throws Exception{
|
||||
|
||||
Workbook wb = new XSSFWorkbook(); //创建工作薄
|
||||
Sheet sheet = wb.createSheet(); //创建工作表
|
||||
sheet.autoSizeColumn(( short ) 0 ); //自适应宽度
|
||||
//写入表头---Excel的第一行数据
|
||||
Row nRow = sheet.createRow(0); //创建行
|
||||
for(int i=0;i<hdNames.length;i++){
|
||||
Cell nCell = nRow.createCell(i); //创建单元格
|
||||
nCell.setCellValue(hdNames[i]);
|
||||
}
|
||||
|
||||
//写入每一行数据---一条记录就是一行数据
|
||||
for(int i=0;i<list.size();i++){
|
||||
for(int j=0;j<hds.length;j++){
|
||||
Object o = getFieldValue(list.get(i), hds[j]); //得到列的值
|
||||
data2Excel(sheet, o, i+1, j); //将值写入Excel
|
||||
}
|
||||
}
|
||||
return downloadExcel(wb, xlsName, request, response);
|
||||
}
|
||||
|
||||
/**
|
||||
* 传递一个Wookbook，给定文件名，以及request和response下载Excel文档
|
||||
* @author LiangXianYou
|
||||
* @throws IOException
|
||||
* @date 2015-3-13 上午9:00:36
|
||||
*/
|
||||
@SuppressWarnings("all")
|
||||
private static boolean downloadExcel(Workbook wb, String xlsName, HttpServletRequest request, HttpServletResponse response) throws IOException{
|
||||
if(request.getHeader("user-agent").indexOf("MSIE") != -1) {
|
||||
xlsName = java.net.URLEncoder.encode(xlsName,"utf-8") + ".xls";
|
||||
} else {
|
||||
xlsName = new String(xlsName.getBytes("utf-8"),"iso-8859-1")+ ".xls";
|
||||
}
|
||||
OutputStream os = response.getOutputStream();
|
||||
response.setContentType("application/vnd.ms-excel");
|
||||
response.setHeader("Content-disposition", "attachment;filename="+xlsName);
|
||||
|
||||
wb.write(os);
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* 通过泛型实例对象得到某一字段值
|
||||
* @author LiangXianYou
|
||||
* @date 2015-3-13 上午10:53:32
|
||||
*/
|
||||
private static <T> Object getFieldValue(T t, String fieldName) throws Exception{
|
||||
if(t == null){
|
||||
return null;
|
||||
}
|
||||
Field field = t.getClass().getDeclaredField(fieldName);
|
||||
field.setAccessible(true);//暴力反射
|
||||
Object o = field.get(t);//得到字段数据的值
|
||||
return o;
|
||||
}
|
||||
|
||||
/**
|
||||
* 将数据写到Excel中
|
||||
* @author LiangXianYou
|
||||
* @date 2015-3-13 上午10:37:55
|
||||
*/
|
||||
private static void data2Excel(Sheet sheet, Object o, Integer r, Integer c){
|
||||
//通过获得sheet中的某一列，有得到，没有创建
|
||||
Row nRow = sheet.getRow(r);
|
||||
if(nRow == null){
|
||||
nRow = sheet.createRow(r);
|
||||
}
|
||||
// nRow.setColumnWidth(r, arg1);
|
||||
|
||||
Cell nCell = nRow.createCell(c);
|
||||
|
||||
|
||||
//根据不同类型进行转化，如有其它类型没有考虑周全的，使用发现的时候添加
|
||||
char type = 'x';
|
||||
if(o instanceof Integer){
|
||||
type = 1;
|
||||
}else if(o instanceof Double){
|
||||
type = 2;
|
||||
}else if(o instanceof Float){
|
||||
type = 3;
|
||||
}else if(o instanceof String){
|
||||
type = 4;
|
||||
}else if(o instanceof Date){
|
||||
type = 5;
|
||||
}else if(o instanceof Calendar){
|
||||
type = 6;
|
||||
}else if(o instanceof Boolean){
|
||||
type = 7;
|
||||
}else if(o == null) {
|
||||
type = 8;
|
||||
}
|
||||
|
||||
switch (type) {
|
||||
case 1:nCell.setCellValue((Integer)o);break;
|
||||
case 2:nCell.setCellValue((Double)o);break;
|
||||
case 3:nCell.setCellValue((Float)o);break;
|
||||
case 4:nCell.setCellValue((String)o);break;
|
||||
case 5:nCell.setCellValue(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(o));break;
|
||||
case 6:nCell.setCellValue((Calendar)o);break;
|
||||
case 7:nCell.setCellValue((Boolean)o);break;
|
||||
case 8:nCell.setCellValue("");break;
|
||||
default:nCell.setCellValue(o + "");break;
|
||||
}
|
||||
}
|
||||
|
||||
//======================= 读取excel ===============================
|
||||
|
||||
/**
|
||||
* read excel head
|
||||
* @param file
|
||||
* @param fields
|
||||
* @param lastRowNum hope get row count
|
||||
* @return
|
||||
* @throws IOException
|
||||
*/
|
||||
public static List<Map> readExcelHead(File file, String[] fields, int lastRowNum) throws IOException {
|
||||
return readExcel(file, fields, lastRowNum, null);
|
||||
}
|
||||
|
||||
//read excel sheet[0]
|
||||
public static List<Map> readExcel(File file, String[] fields) throws IOException {
|
||||
return readExcel(file, fields, -1, null);
|
||||
}
|
||||
|
||||
public static List<Map> readExcel(File file, String[] fields, String sheetName) throws IOException {
|
||||
return readExcel(file, fields, -1, sheetName);
|
||||
}
|
||||
|
||||
//read excel all sheet
|
||||
public static Map<String, List<Map>> readExcelAll(File file, String[] fields) throws IOException {
|
||||
return readExcelAll(file, fields, -1);
|
||||
}
|
||||
|
||||
//read excel sheet[0]
|
||||
private static List<Map> readExcel(File file, String[] fields, int lastRowNum, String sheetName) throws IOException {
|
||||
Workbook wk;
|
||||
try {
|
||||
wk = new HSSFWorkbook(new FileInputStream(file));//if excel version 2007+ will throws OfficeXmlFileException
|
||||
}catch (OfficeXmlFileException e){
|
||||
wk = new XSSFWorkbook(new FileInputStream(file));
|
||||
}
|
||||
Sheet sheet = sheetName == null ? wk.getSheetAt(0) : wk.getSheet(sheetName);
|
||||
if (sheet == null) throw new OfficeXmlFileException("sheet["+sheetName+"] can't find");
|
||||
return readExcel(sheet, fields, lastRowNum);
|
||||
}
|
||||
|
||||
/**
|
||||
* read excel all sheet,
|
||||
* can read excel 2007+ and 2007-
|
||||
* @param file
|
||||
* @param fields
|
||||
* @param lastRowNum
|
||||
* @return
|
||||
* @throws IOException
|
||||
*/
|
||||
private static Map<String, List<Map>> readExcelAll(File file, String[] fields, int lastRowNum) throws IOException {
|
||||
Workbook wk;
|
||||
try {
|
||||
wk = new HSSFWorkbook(new FileInputStream(file));//if excel version 2007+ will throws OfficeXmlFileException
|
||||
}catch (OfficeXmlFileException e){
|
||||
wk = new XSSFWorkbook(new FileInputStream(file));
|
||||
}
|
||||
|
||||
Map<String, List<Map>> data = new LinkedHashMap<>();
|
||||
//reading all sheet
|
||||
for (int i = 0; i < wk.getNumberOfSheets(); i++) {
|
||||
Sheet sheet = wk.getSheetAt(i);
|
||||
List<Map> maps = readExcel(sheet, fields, lastRowNum);
|
||||
|
||||
//move head
|
||||
if (lastRowNum < 0 && maps.size() > 0){
|
||||
maps.remove(0);
|
||||
}
|
||||
data.put(sheet.getSheetName(), maps);
|
||||
}
|
||||
return data;
|
||||
}
|
||||
|
||||
/**
|
||||
* read excel
|
||||
* @author Lxyer 2016/8/1 10:32.
|
||||
*/
|
||||
private static List<Map> readExcel(Sheet sheet, String[] fields, int lastRowNum) throws OfficeXmlFileException {
|
||||
List<Map> list = new ArrayList<>();
|
||||
if (lastRowNum < 0 || lastRowNum > sheet.getLastRowNum()){
|
||||
lastRowNum = sheet.getLastRowNum();
|
||||
}
|
||||
|
||||
int t = 0;
|
||||
r:for (int i=0; i<=lastRowNum; i++){
|
||||
Row row = sheet.getRow(i);
|
||||
if (row == null) continue ;
|
||||
short cellNum = row.getLastCellNum();
|
||||
//空跳过/连续三行为空结束
|
||||
if (isEmptyRow(row, fields.length)) {
|
||||
if (t++ > 3) break;
|
||||
continue ;
|
||||
}
|
||||
|
||||
Map map = new HashMap();
|
||||
for (int j=0; j<cellNum && j<fields.length; j++){
|
||||
Cell cell = row.getCell(j);
|
||||
if (cell == null){
|
||||
map.put(fields[j], "");
|
||||
continue;
|
||||
}
|
||||
|
||||
int cellType = cell.getCellType();
|
||||
if (cellType == 0){
|
||||
map.put(fields[j], (long)cell.getNumericCellValue()+"");
|
||||
}else {
|
||||
map.put(fields[j], cell.getStringCellValue());
|
||||
}
|
||||
}
|
||||
list.add(map);
|
||||
}
|
||||
return list;
|
||||
}
|
||||
|
||||
//空跳过/连续三行为空结束
|
||||
private static boolean isEmptyRow(Row row, int len){
|
||||
for (int i = 0; i< row.getLastCellNum() && i < len; i++) {
|
||||
Cell cell = row.getCell(i);//列
|
||||
if (cell != null){
|
||||
if (cell.getCellTypeEnum() != CellType.NUMERIC && cell.getStringCellValue() != null && !cell.getStringCellValue().isEmpty()){
|
||||
return false;
|
||||
}else if (cell.getCellTypeEnum() == CellType.NUMERIC && cell.getNumericCellValue() != 0){
|
||||
return false;
|
||||
}
|
||||
}
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
}
|
||||
Reference in New Issue
Block a user