@@ -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：
* 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：
* 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：
* 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：
* 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 al l 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 exce l 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 ;
}
}
