413 lines
14 KiB
Java
413 lines
14 KiB
Java
package net.tccn.kit.poi;
|
||
|
||
import org.apache.poi.poifs.filesystem.OfficeXmlFileException;
|
||
import org.apache.poi.ss.formula.functions.T;
|
||
import org.apache.poi.ss.usermodel.*;
|
||
import org.apache.poi.xssf.streaming.SXSSFWorkbook;
|
||
|
||
import java.io.File;
|
||
import java.io.IOException;
|
||
import java.lang.reflect.Field;
|
||
import java.text.SimpleDateFormat;
|
||
import java.util.*;
|
||
|
||
/**
|
||
下载示例
|
||
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;
|
||
}
|
||
|
||
* 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 {
|
||
|
||
// 在已有的excel中新增sheet并写入数据
|
||
public static <T> Workbook exportExcel(List<T> list, LinkedHashMap<String, String> headMap, Workbook workbook, String sheetName) {
|
||
return dataToWorkBook(list, headMap, workbook, sheetName);
|
||
}
|
||
|
||
public static <T> Workbook exportExcel(List<T> list, LinkedHashMap<String, String> headMap, Workbook workbook) {
|
||
return dataToWorkBook(list, headMap, workbook, null);
|
||
}
|
||
|
||
/**
|
||
* Excels导出多个sheet
|
||
*
|
||
* @author LiangXianYou
|
||
* @date 2015-6-16 下午5:56:56
|
||
*/
|
||
//map:data,sheetName,hds,hdNames,
|
||
public static <T> Workbook exportExcels(List<Map<String, Object>> list) {
|
||
|
||
Workbook wb = new SXSSFWorkbook(); //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");
|
||
dataToSheet(sheet, data, hds, 1);
|
||
}
|
||
|
||
return wb;
|
||
}
|
||
|
||
/**
|
||
* 通过数据构建 Workbook 对象
|
||
* @param list 数据
|
||
* @param headMap 每一列的字段名和对应的表头名称 如：{name:"姓名"， age:"年龄"}
|
||
* @param <T> 数据泛型，支持javaBean 或Map
|
||
* @return
|
||
* @throws Exception
|
||
* @author LiangXianYou
|
||
* @date 2015-3-13 上午11:00:30
|
||
*/
|
||
public static <T> Workbook exportExcel(List<T> list, LinkedHashMap<String, String> headMap) {
|
||
return dataToWorkBook(list, headMap, null, null);
|
||
}
|
||
|
||
private static <T> Workbook dataToWorkBook(List<T> list, LinkedHashMap<String, String> headMap, Workbook wb, String sheetName) {
|
||
if (wb == null) {
|
||
wb = new SXSSFWorkbook();
|
||
}
|
||
|
||
Sheet sheet = sheetName != null && !sheetName.isEmpty() ?
|
||
wb.createSheet(sheetName) : wb.createSheet();
|
||
|
||
String[] hdNames = new String[headMap.size()]; //
|
||
String[] hds = new String[headMap.size()];
|
||
|
||
int[] tag = {0};
|
||
headMap.forEach((k,v) -> {
|
||
hds[tag[0]] = k;
|
||
hdNames[tag[0]] = v;
|
||
tag[0] ++;
|
||
});
|
||
|
||
Row nRow = sheet.createRow(0);
|
||
for (int i = 0; i < hdNames.length; i++) {
|
||
Cell nCell = nRow.createCell(i);
|
||
nCell.setCellValue(hdNames[i]);
|
||
}
|
||
|
||
// 写入每一条记录
|
||
dataToSheet(sheet, list, hds, 1);
|
||
return wb;
|
||
}
|
||
|
||
/**
|
||
* 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 NoSuchFieldException, IllegalAccessException {
|
||
Object v = null;
|
||
|
||
if (t == null) {
|
||
v = null;
|
||
} else if (t instanceof Map) {
|
||
v = ((Map) t).get(fieldName);
|
||
} else {
|
||
Field field = t.getClass().getDeclaredField(fieldName);
|
||
field.setAccessible(true);
|
||
v = field.get(t);
|
||
}
|
||
|
||
return v;
|
||
}
|
||
|
||
/**
|
||
* 将数据写到Excel中
|
||
*
|
||
* @author LiangXianYou
|
||
* @date 2015-3-13 上午10:37:55
|
||
*/
|
||
private static <T> void dataToSheet(Sheet sheet, List<T> list, String[] hds, int skipRow) {
|
||
if (list == null || list.size() == 0) return;
|
||
|
||
for (int j = 0; j < list.size(); j++) {
|
||
for (int k = 0; k < hds.length; k++) {
|
||
Row nRow = sheet.getRow(j + skipRow);
|
||
if (nRow == null) {
|
||
nRow = sheet.createRow(j + 1);
|
||
}
|
||
Cell cell = nRow.createCell(k);
|
||
|
||
try {
|
||
Object v = getFieldValue(list.get(j), hds[k]); //得到列的值
|
||
dataToCell(cell, v); //将值写入Excel
|
||
} catch (Exception e) {
|
||
e.printStackTrace();
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
private static void dataToCell(Cell cell, Object v) {
|
||
//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
|
||
if (v instanceof Integer) cell.setCellValue((Integer) v);
|
||
else if (v instanceof Double) cell.setCellValue((Double) v);
|
||
else if (v instanceof Float) cell.setCellValue((Float) v);
|
||
else if (v instanceof String) cell.setCellValue((String) v);
|
||
else if (v instanceof Date) cell.setCellValue(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(v));
|
||
else if (v instanceof Calendar) cell.setCellValue((Calendar) v);
|
||
else if (v instanceof Boolean) cell.setCellValue((Boolean) v);
|
||
else if (v == null) cell.setCellValue("");
|
||
else cell.setCellValue(v + "");
|
||
}
|
||
|
||
//======================= 读取excel ===============================
|
||
|
||
//read excel head
|
||
public static Map readExcelHead(File file, String[] fields) {
|
||
List<Map> list = readExcel(file, fields, 1, null);
|
||
return list.size() > 0 ? list.get(0) : new HashMap();
|
||
}
|
||
|
||
//read excel head by sheetName
|
||
public static Map readExcelHead(File file, String[] fields, String sheetName) {
|
||
List<Map> list = readExcel(file, fields, 1, sheetName);
|
||
return list.size() > 0 ? list.get(0) : new HashMap();
|
||
}
|
||
|
||
//read excel sheet[0]
|
||
public static List<Map> readExcel(File file, String[] fields) {
|
||
return readExcel(file, fields, -1, null);
|
||
}
|
||
|
||
//read excel sheet[0] no fields
|
||
public static List<Map> readExcel(File file) {
|
||
return readExcel(file, null, -1, null);
|
||
}
|
||
|
||
//read excel by sheetName
|
||
public static List<Map> readExcel(File file, String[] fields, String sheetName) {
|
||
return readExcel(file, fields, -1, sheetName);
|
||
}
|
||
|
||
//read excel by sheetName no fields
|
||
public static List<Map> readExcel(File file, String sheetName) {
|
||
return readExcel(file, null, -1, sheetName);
|
||
}
|
||
|
||
//read excel all sheet
|
||
public static Map<String, List<Map>> readExcelAll(File file, String[] fields) {
|
||
return readExcelAll(file, fields, -1);
|
||
}
|
||
|
||
//read all excel no fields
|
||
public static Map<String, List<Map>> readExcelAll(File file) {
|
||
return readExcelAll(file, null, -1);
|
||
}
|
||
|
||
//read excel sheet[0]
|
||
private static List<Map> readExcel(File file, String[] fields, int lastRowNum, String sheetName) {
|
||
Workbook wk = getWorkbook(file);
|
||
Sheet sheet = sheetName == null ? wk.getSheetAt(0) : wk.getSheet(sheetName);
|
||
if (sheet == null) throw new OfficeXmlFileException("sheet[" + sheetName + "] can't findList");
|
||
|
||
if (lastRowNum < 0 || lastRowNum > sheet.getLastRowNum()) {
|
||
lastRowNum = sheet.getLastRowNum();
|
||
}
|
||
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) {
|
||
Workbook wk = getWorkbook(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) {
|
||
if (lastRowNum < 0 || lastRowNum > sheet.getLastRowNum()) {
|
||
lastRowNum = sheet.getLastRowNum();
|
||
}
|
||
|
||
if (fields == null || fields.length == 0) {
|
||
return readExcel(sheet, lastRowNum);
|
||
}
|
||
|
||
List<Map> list = new ArrayList<>();
|
||
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;
|
||
}
|
||
|
||
if (cell.getCellType() == CellType.NUMERIC) {
|
||
map.put(fields[j], (long) cell.getNumericCellValue() + "");
|
||
} else {
|
||
map.put(fields[j], cell.getStringCellValue());
|
||
}
|
||
}
|
||
list.add(map);
|
||
}
|
||
return list;
|
||
}
|
||
|
||
/**
|
||
* @author Lxyer 2016/9/21 00:38.
|
||
*/
|
||
private static List<Map> readExcel(Sheet sheet, int lastRowNum) {
|
||
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, 3)) {
|
||
if (t++ > 3) break;
|
||
continue;
|
||
}
|
||
|
||
Map map = new HashMap();
|
||
for (int j = 0; j < cellNum; j++) {
|
||
String field = (char) ((j / 26 == 0 ? ' ' : 'a') + j / 26) + "" + (char) ('a' + j % 26);
|
||
field = field.replace(" ", "");
|
||
Cell cell = row.getCell(j);
|
||
if (cell == null) {
|
||
map.put(field, "");
|
||
continue;
|
||
}
|
||
|
||
if (cell.getCellType() == CellType.NUMERIC) {
|
||
map.put(field, (long) cell.getNumericCellValue() + "");
|
||
} else {
|
||
map.put(field, 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.getCellType() != CellType.NUMERIC && cell.getStringCellValue() != null && !cell.getStringCellValue().isEmpty()) {
|
||
return false;
|
||
} else if (cell.getCellType() == CellType.NUMERIC && cell.getNumericCellValue() != 0) {
|
||
return false;
|
||
}
|
||
}
|
||
}
|
||
return true;
|
||
}
|
||
|
||
//get all sheet names
|
||
public static List<String> getSheetNames(File file) {
|
||
Workbook wk = getWorkbook(file);
|
||
List<String> sheetNames = new ArrayList<>();
|
||
for (int i = 0; i < wk.getNumberOfSheets(); i++) {
|
||
sheetNames.add(wk.getSheetAt(i).getSheetName());
|
||
}
|
||
return sheetNames;
|
||
}
|
||
|
||
public static Workbook getWorkbook(File file) {
|
||
try {
|
||
return WorkbookFactory.create(file);
|
||
} catch (IOException e) {
|
||
e.printStackTrace();
|
||
}
|
||
return null;
|
||
/*Workbook wk;
|
||
FileInputStream fis = new FileInputStream(file);
|
||
try {
|
||
wk = new HSSFWorkbook(fis);//if excel version 2007+ will throws OfficeXmlFileException
|
||
} catch (OfficeXmlFileException e) {
|
||
wk = new SXSSFWorkbook(new XSSFWorkbook(fis));
|
||
} finally {
|
||
if (fis != null) {
|
||
try {
|
||
fis.close();
|
||
} catch (Exception e) {
|
||
//e.printStackTrace();
|
||
}
|
||
}
|
||
}
|
||
|
||
return wk;*/
|
||
}
|
||
|
||
//dev
|
||
public void setWorkbook(File file) {
|
||
|
||
}
|
||
|
||
}
|