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lxyer 2018-12-02 14:03:46 +08:00
parent 40a64e6392
commit 26b7123ebc
4 changed files with 359 additions and 392 deletions
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62
pom.xml
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@ -5,9 +5,34 @@
<modelVersion>4.0.0</modelVersion>
<groupId>com.lxyer</groupId>
<artifactId>jdk-demo</artifactId>
<version>1.0-SNAPSHOT</version>
<artifactId>excel</artifactId>
<version>0.1.0</version>
<packaging>jar</packaging>
<dependencies>
<!-- poi支持 -->
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.17</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.17</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<finalName>JExcel</finalName>
<sourceDirectory>src</sourceDirectory>
<testSourceDirectory>test</testSourceDirectory>
<resources>
@ -26,37 +51,4 @@
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.17</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.17</version>
</dependency>
<dependency>
<groupId>org.redkale</groupId>
<artifactId>redkale</artifactId>
<version>1.9.3</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>servlet-api</artifactId>
<version>6.0.37</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
</dependencies>
</project>

666
src/com/lxyer/excel/poi/ExcelKit.java
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@ -5,392 +5,366 @@ 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
*/
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";
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";
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);
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);
}
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
if (o instanceof Integer) nCell.setCellValue((Integer)o);
else if (o instanceof Double) nCell.setCellValue((Double)o);
else if (o instanceof Float) nCell.setCellValue((Float)o);
else if (o instanceof String) nCell.setCellValue((String)o);
else if (o instanceof Date) nCell.setCellValue(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(o));
else if (o instanceof Calendar) nCell.setCellValue((Calendar)o);
else if (o instanceof Boolean) nCell.setCellValue((Boolean)o);
else if (o == null) nCell.setCellValue("");
else nCell.setCellValue(o + "");
}
* 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 {
//======================= 读取excel ===============================
/**
* Excels导出多个sheet
*
* @author LiangXianYou
* @date 2015-6-16 下午5:56:56
*/
//map:data,sheetName,hds,hdNames,xlsName;
public static <T> Workbook exportExcels(List<Map<String, Object>> list) throws Exception {
//read excel head
public static Map readExcelHead(File file, String[] fields) throws IOException {
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) throws IOException {
List<Map> list = readExcel(file, fields, 1, sheetName);
return list.size() > 0 ? list.get(0) : new HashMap();
}
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]);
}
//read excel sheet[0]
public static List<Map> readExcel(File file, String[] fields) throws IOException {
return readExcel(file, fields, -1, null);
}
//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
}
}
}
//read excel sheet[0] no fields
public static List<Map> readExcel(File file) throws IOException {
return readExcel(file, null, -1, null);
}
return wb;
}
//read excel by sheetName
public static List<Map> readExcel(File file, String[] fields, String sheetName) throws IOException {
return readExcel(file, fields, -1, sheetName);
}
/**
* 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
*
* @throws Exception
* @author LiangXianYou
* @date 2015-3-13 上午11:00:30
*/
public static <T> Workbook exportExcel(List<T> list, String[] hdNames, String[] hds) throws Exception {
//read excel by sheetName no fields
public static List<Map> readExcel(File file, String sheetName) throws IOException {
return readExcel(file, null, -1, sheetName);
}
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]);
}
//read excel all sheet
public static Map<String, List<Map>> readExcelAll(File file, String[] fields) throws IOException {
return readExcelAll(file, fields, -1);
}
//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 wb;
}
//read all excel no fields
public static Map<String, List<Map>> readExcelAll(File file) throws IOException {
return readExcelAll(file, null, -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);
}
/**
* 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 {
Object v;
/**
* 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));
}
if (t == null) {
v = null;
} else if (t instanceof Map) {
v = ((Map) t).get(fieldName); //得到列的值
} else {
Field field = t.getClass().getDeclaredField(fieldName);
field.setAccessible(true); //暴力反射
v = field.get(t); //得到字段数据的值
}
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);
return v;
}
//move head
if (lastRowNum < 0 && maps.size() > 0){
maps.remove(0);
}
data.put(sheet.getSheetName(), maps);
}
return data;
}
/**
* 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);
}
Cell nCell = nRow.createCell(c);
/**
* read excel
* @author Lxyer 2016/8/1 10:32.
*/
private static List<Map> readExcel(Sheet sheet, String[] fields, int lastRowNum) throws OfficeXmlFileException {
if (fields == null || fields.length == 0){
return readExcel(sheet, lastRowNum);
}
//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 (o instanceof Integer) nCell.setCellValue((Integer) o);
else if (o instanceof Double) nCell.setCellValue((Double) o);
else if (o instanceof Float) nCell.setCellValue((Float) o);
else if (o instanceof String) nCell.setCellValue((String) o);
else if (o instanceof Date) nCell.setCellValue(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(o));
else if (o instanceof Calendar) nCell.setCellValue((Calendar) o);
else if (o instanceof Boolean) nCell.setCellValue((Boolean) o);
else if (o == null) nCell.setCellValue("");
else nCell.setCellValue(o + "");
}
List<Map> list = new ArrayList<>();
if (lastRowNum < 0 || lastRowNum > sheet.getLastRowNum()){
lastRowNum = sheet.getLastRowNum();
}
//======================= 读取excel ===============================
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 ;
}
//read excel head
public static Map readExcelHead(File file, String[] fields) throws IOException {
List<Map> list = readExcel(file, fields, 1, null);
return list.size() > 0 ? list.get(0) : new HashMap();
}
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;
}
//read excel head by sheetName
public static Map readExcelHead(File file, String[] fields, String sheetName) throws IOException {
List<Map> list = readExcel(file, fields, 1, sheetName);
return list.size() > 0 ? list.get(0) : new HashMap();
}
if (cell.getCellTypeEnum() == CellType.NUMERIC){
map.put(fields[j], (long)cell.getNumericCellValue()+"");
}else {
map.put(fields[j], cell.getStringCellValue());
}
}
list.add(map);
}
return list;
}
//read excel sheet[0]
public static List<Map> readExcel(File file, String[] fields) throws IOException {
return readExcel(file, fields, -1, null);
}
/**
*
* @author Lxyer 2016/9/21 00:38.
*/
private static List<Map> readExcel(Sheet sheet, int lastRowNum) throws OfficeXmlFileException {
List<Map> list = new ArrayList<>();
if (lastRowNum < 0 || lastRowNum > sheet.getLastRowNum()){
lastRowNum = sheet.getLastRowNum();
}
//read excel sheet[0] no fields
public static List<Map> readExcel(File file) throws IOException {
return readExcel(file, null, -1, null);
}
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 ;
}
//read excel by sheetName
public static List<Map> readExcel(File file, String[] fields, String sheetName) throws IOException {
return readExcel(file, fields, -1, sheetName);
}
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;
}
//read excel by sheetName no fields
public static List<Map> readExcel(File file, String sheetName) throws IOException {
return readExcel(file, null, -1, sheetName);
}
if (cell.getCellTypeEnum() == CellType.NUMERIC){
map.put(field, (long)cell.getNumericCellValue()+"");
}else {
map.put(field, cell.getStringCellValue());
}
}
list.add(map);
}
return list;
}
//read excel all sheet
public static Map<String, List<Map>> readExcelAll(File file, String[] fields) throws IOException {
return readExcelAll(file, fields, -1);
}
//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;
}
//read all excel no fields
public static Map<String, List<Map>> readExcelAll(File file) throws IOException {
return readExcelAll(file, null, -1);
}
//get all sheet names
public static List<String> getSheetNames(File file) 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));
}
//read excel sheet[0]
private static List<Map> readExcel(File file, String[] fields, int lastRowNum, String sheetName) throws IOException {
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");
List<String> sheetNames = new ArrayList<>();
for (int i = 0; i < wk.getNumberOfSheets(); i++) {
sheetNames.add(wk.getSheetAt(i).getSheetName());
}
return sheetNames;
}
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) throws IOException {
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) throws OfficeXmlFileException {
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.getCellTypeEnum() == 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) 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, 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.getCellTypeEnum() == 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.getCellTypeEnum() != CellType.NUMERIC && cell.getStringCellValue() != null && !cell.getStringCellValue().isEmpty()) {
return false;
} else if (cell.getCellTypeEnum() == CellType.NUMERIC && cell.getNumericCellValue() != 0) {
return false;
}
}
}
return true;
}
//get all sheet names
public static List<String> getSheetNames(File file) throws IOException {
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;
}
private static Workbook getWorkbook(File file) 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));
}
return wk;
}
}

4
test/com/lxyer/excel/ExcelKitTest.java
View File

@ -14,7 +14,7 @@ import java.util.Map;
public class ExcelKitTest {
//read excel by fields
@Test
//@Test
public void readTest() throws IOException {
/*String sql1 = "select a, b, c from Sheet1";
String sql2 = "select a, b, c from Sheet1 where a=1 order by b";
@ -33,7 +33,7 @@ public class ExcelKitTest {
}
//read excel no fields
@Test
//@Test
public void readTest2() throws IOException {
List<Map> list = ExcelKit.readExcel(new File("res/test.xlsx"));

19
test/com/lxyer/excel/ExportKitTest.java
View File

@ -1,13 +1,10 @@
package com.lxyer.excel;
import org.junit.Test;
import org.redkale.net.http.HttpResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.*;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.*;
import java.util.concurrent.CountDownLatch;
import java.util.function.BiFunction;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
@ -25,7 +22,7 @@ import java.util.zip.ZipOutputStream;
public class ExportKitTest {
//1、导出List<javabean>示例
@Test
//@Test
public void exportBean(){
Map<String, String> heads = new LinkedHashMap();
heads.put("姓名", "name");
@ -52,7 +49,7 @@ public class ExportKitTest {
}
//2、导出List<Map> 示例
@Test
//@Test
public void exportMapToZip(){
Map<String, String> heads = new LinkedHashMap();
@ -101,6 +98,7 @@ public class ExportKitTest {
* @return
* @throws IOException
*/
/*
public <T> boolean exportExcel(Map head, List<T> rows, HttpServletRequest request, HttpServletResponse response, String xlsName, BiFunction fun) throws IOException {
if(request.getHeader("user-agent") != null && request.getHeader("user-agent").indexOf("MSIE") != -1) {
xlsName = java.net.URLEncoder.encode(xlsName,"utf-8") + ".xls";
@ -120,6 +118,7 @@ public class ExportKitTest {
os.write(ExcelExportKit.exportExcel(head, rows, fun).toString().getBytes());
return true;
}
*/
/**
* 4、导出压缩的excel示例
@ -156,6 +155,7 @@ public class ExportKitTest {
* @return
* @throws IOException
*/
/*
public static <T,U,R> void exportExcel(Map head, List<T> rows, HttpResponse response, String xlsName, BiFunction<T,U,R> fun) throws IOException {
xlsName = new String(xlsName.getBytes("utf-8"),"iso-8859-1")+ ".xls";
@ -165,4 +165,5 @@ public class ExportKitTest {
StringBuilder buf = ExcelExportKit.exportExcel(head, rows, fun);
response.finish(buf.toString().getBytes());
}
*/
}