问题描述
我使用poi版本: 3.14
我访问Excel( .xlsx )文件
this.workbook = WorkbookFactory.create(new FileInputStream(f.getPath()));
this.workbook.setMissingCellPolicy(Row.CREATE_NULL_AS_BLANK);
this.sheet = workbook.getSheetAt(0);
以下是应用于单元格的.xlsx文件中的自定义格式。我想在我的代码中显示单元格值。
正如您可以看到单元格值在文件中可见是031642153283700100。此外,当我对这个特定的单元格进行分类时,值将更改为42153283700100(不包含自定义格式的数据)。
编辑 p>
原始单元格类型为CELL_TYPE_NUMERIC。
>
如何在java代码中显示格式化的值031642153283700100 ?
我试过:
- cell.toString()=>42153283700100
- cell.getNumericCellValue()=>42153283700100
:
cell.setCellType(Cell.CELL_TYPE_STRING);
- cell.getStringCellValue()=>42153283700100
-
cell.getRichStringCellValue()=>42153283700100
-
旧的HSSFDataFormatter与formatCellValue(cell)method =>421532837001000316
对于数字格式,您应该使用 CellGeneralFormatter
或 CellNumberFormatter
。
示例:
import org.apache.poi.ss.usermodel。*;
import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
import org.apache.poi.ss.format。*;
import java.io.IOException;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.io.FileInputStream;
class ReadExcelWithFormats {
public static void main(String [] args){
try {
InputStream inp = new FileInputStream workbook.xlsx);
工作簿wb = WorkbookFactory.create(inp);
Sheet sheet = wb.getSheetAt(0);
for(Row row:sheet){
for(单元格:行){
String formatstring = cell.getCellStyle()。getDataFormatString ();
System.out.println(formatstring);
switch(cell.getCellType()){
// ...
case Cell.CELL_TYPE_NUMERIC:
double cellvalue = cell.getNumericCellValue();
System.out.println(cellvalue);
String formattedvalue =;
if(general.equals(formatstring.toLowerCase())){
formattedvalue = new CellGeneralFormatter()。format(cellvalue);
} else {
formattedvalue = new CellNumberFormatter(formatstring).format(cellvalue);
}
System.out.println(formattedvalue);
break;
// ...
默认值:
System.out.println();
}
}
}
} catch(InvalidFormatException ifex){
} catch(FileNotFoundException fnfex){
} catch(IOException ioex ){
}
}
}
编辑
好的,我们有一个更一般的例子。以上不适用于日期(我已经知道的),但也不适用于所有数字格式。后者我认为 CellNumberFormatter
应该做但不会。不幸的是,它甚至会产生一些正确数字格式的错误。
在 Excel
中,一个数字格式最多可以包含4个部分用分号分隔。第一部分是大于0的数字,第二部分是数字低于0的数字,第三部分是数字等于0,第四部分是数字的文字。
格式> 0
; 格式< 0
; format = 0
; text
由于 CellNumberFormatter
不能正确处理,所以我们应该在使用 CellNumberFormatter
之前进行处理。 / p>
import org.apache.poi.ss.usermodel。*;
import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
import org.apache.poi.ss.format。*;
import java.io.IOException;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.io.FileInputStream;
import java.util.Date;
class ReadExcelWithFormats {
public static void main(String [] args){
try {
InputStream inp = new FileInputStream workbook.xlsx);
工作簿wb = WorkbookFactory.create(inp);
Sheet sheet = wb.getSheetAt(0);
for(Row row:sheet){
for(单元格:行){
String formatstring = cell.getCellStyle()。getDataFormatString ();
System.out.println(formatstring);
switch(cell.getCellType()){
// ...
case Cell.CELL_TYPE_NUMERIC:
String formattedvalue =;
String [] formatstringparts = formatstring.split(;);
if(DateUtil.isCellDateFormatted(cell)){
Date date = cell.getDateCellValue();
System.out.println(date);
String dateformatstring =;
if(cell.getCellStyle()。getDataFormat()== 14){//默认的短日期没有显式格式化
dateformatstring =yyyy-MM-dd; //这个
的默认日期格式else if(cell.getCellStyle()。getDataFormat()== 22){//默认的短日期时间没有显式格式化
dateformatstring =yyyy-MM-dd hh :毫米; //这个
的默认datetime格式} else {//显式格式化的其他数据格式
dateformatstring = formatstringparts [0];
}
formattedvalue = new CellDateFormatter(dateformatstring).format(date);
} else {
double cellvalue = cell.getNumericCellValue();
System.out.println(cellvalue);
switch(formatstringparts.length){
案例4:
案例3:
if(cellvalue> 0){
if(general .equals(formatstringparts [0] .toLowerCase())){
formattedvalue = new CellGeneralFormatter()。format(cellvalue);
} else {
formattedvalue = new CellNumberFormatter(formatstringparts [0])。format(cellvalue);
}
}
if(cellvalue< 0){
if(general.equals(formatstringparts [1] .toLowerCase())){
formattedvalue = new CellGeneralFormatter()。format(cellvalue);
} else {
formattedvalue = new CellNumberFormatter(formatstringparts [1])。format(cellvalue);
}
}
if(cellvalue == 0){
if(general.equals(formatstringparts [2] .toLowerCase())){
formattedvalue = new CellGeneralFormatter()。format(cellvalue);
} else {
formattedvalue = new CellNumberFormatter(formatstringparts [2])。format(cellvalue);
}
}
break;
case 2:
if(cellvalue> = 0){
if(general.equals(formatstringparts [0] .toLowerCase())){
formattedvalue = new CellGeneralFormatter()格式(cellvalue)。
} else {
formattedvalue = new CellNumberFormatter(formatstringparts [0])。format(cellvalue);
}
}
if(cellvalue< 0){
if(general.equals(formatstringparts [1] .toLowerCase())){
formattedvalue = new CellGeneralFormatter()。format(cellvalue);
} else {
formattedvalue = new CellNumberFormatter(formatstringparts [1])。format(cellvalue);
}
}
break;
default:
if(general.equals(formatstringparts [0] .toLowerCase())){
formattedvalue = new CellGeneralFormatter()。format(cellvalue);
} else {
formattedvalue = new CellNumberFormatter(formatstringparts [0])。format(cellvalue);
}
}
}
System.out.println(formattedvalue);
break;
// ...
默认值:
System.out.println();
}
}
}
} catch(InvalidFormatException ifex){
} catch(FileNotFoundException fnfex){
} catch(IOException ioex ){
}
}
}
I am Using poi version : 3.14
I access an Excel (.xlsx) file
this.workbook = WorkbookFactory.create(new FileInputStream(f.getPath()));
this.workbook.setMissingCellPolicy(Row.CREATE_NULL_AS_BLANK);
this.sheet = workbook.getSheetAt(0);
Here is a custom format found in .xlsx file applied to a cell. I want to display the cell value in my code.
As you can see the cell value visible in file is "031642153283700100". Also when i clic on this particular cell, value is changing to "42153283700100" (data without custom format applied on).
EDIT
Original cell type is CELL_TYPE_NUMERIC.
==>
How can i display the formatted value "031642153283700100" in java code ?
I tried :
- cell.toString() => "42153283700100"
- cell.getNumericCellValue() => "42153283700100"
With previous cell type conversion :
cell.setCellType(Cell.CELL_TYPE_STRING);
- cell.getStringCellValue() => "42153283700100"
cell.getRichStringCellValue() => "42153283700100"
Old HSSFDataFormatter with formatCellValue(cell) method => "421532837001000316"
For number formats you should use CellGeneralFormatter
or CellNumberFormatter
.
Example:
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
import org.apache.poi.ss.format.*;
import java.io.IOException;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.io.FileInputStream;
class ReadExcelWithFormats {
public static void main(String[] args) {
try {
InputStream inp = new FileInputStream("workbook.xlsx");
Workbook wb = WorkbookFactory.create(inp);
Sheet sheet = wb.getSheetAt(0);
for (Row row : sheet) {
for (Cell cell : row) {
String formatstring = cell.getCellStyle().getDataFormatString();
System.out.println(formatstring);
switch (cell.getCellType()) {
//...
case Cell.CELL_TYPE_NUMERIC:
double cellvalue = cell.getNumericCellValue();
System.out.println(cellvalue);
String formattedvalue = "";
if ("general".equals(formatstring.toLowerCase())) {
formattedvalue = new CellGeneralFormatter().format(cellvalue);
} else {
formattedvalue = new CellNumberFormatter(formatstring).format(cellvalue);
}
System.out.println(formattedvalue);
break;
//...
default:
System.out.println();
}
}
}
} catch (InvalidFormatException ifex) {
} catch (FileNotFoundException fnfex) {
} catch (IOException ioex) {
}
}
}
Edit
OK, let's have a more general example. The above will not work with dates (what I had known already) but also not with all number formats. The latter I thought the CellNumberFormatter
should do but it does not. Unfortunately it will even produce errors with some proper number formats.
In Excel
a number format can contain up to 4 parts delimited with semicolon. The first part is for numbers greater than 0, the second part is for numbers lower than 0, the third part is for numbers equal 0 and the fourth part is for text.
format > 0
;format < 0
;format = 0
;text
Since the CellNumberFormatter
does not handle this properly, we should do it before using the CellNumberFormatter
.
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
import org.apache.poi.ss.format.*;
import java.io.IOException;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.io.FileInputStream;
import java.util.Date;
class ReadExcelWithFormats {
public static void main(String[] args) {
try {
InputStream inp = new FileInputStream("workbook.xlsx");
Workbook wb = WorkbookFactory.create(inp);
Sheet sheet = wb.getSheetAt(0);
for (Row row : sheet) {
for (Cell cell : row) {
String formatstring = cell.getCellStyle().getDataFormatString();
System.out.println(formatstring);
switch (cell.getCellType()) {
//...
case Cell.CELL_TYPE_NUMERIC:
String formattedvalue = "";
String[] formatstringparts = formatstring.split(";");
if (DateUtil.isCellDateFormatted(cell)) {
Date date = cell.getDateCellValue();
System.out.println(date);
String dateformatstring = "";
if (cell.getCellStyle().getDataFormat() == 14) { //default short date without explicit formatting
dateformatstring = "yyyy-MM-dd"; //default date format for this
} else if (cell.getCellStyle().getDataFormat() == 22) { //default short datetime without explicit formatting
dateformatstring = "yyyy-MM-dd hh:mm"; //default datetime format for this
} else { //other data formats with explicit formatting
dateformatstring = formatstringparts[0];
}
formattedvalue = new CellDateFormatter(dateformatstring).format(date);
} else {
double cellvalue = cell.getNumericCellValue();
System.out.println(cellvalue);
switch (formatstringparts.length) {
case 4:
case 3:
if (cellvalue > 0) {
if ("general".equals(formatstringparts[0].toLowerCase())) {
formattedvalue = new CellGeneralFormatter().format(cellvalue);
} else {
formattedvalue = new CellNumberFormatter(formatstringparts[0]).format(cellvalue);
}
}
if (cellvalue < 0) {
if ("general".equals(formatstringparts[1].toLowerCase())) {
formattedvalue = new CellGeneralFormatter().format(cellvalue);
} else {
formattedvalue = new CellNumberFormatter(formatstringparts[1]).format(cellvalue);
}
}
if (cellvalue == 0) {
if ("general".equals(formatstringparts[2].toLowerCase())) {
formattedvalue = new CellGeneralFormatter().format(cellvalue);
} else {
formattedvalue = new CellNumberFormatter(formatstringparts[2]).format(cellvalue);
}
}
break;
case 2:
if (cellvalue >= 0) {
if ("general".equals(formatstringparts[0].toLowerCase())) {
formattedvalue = new CellGeneralFormatter().format(cellvalue);
} else {
formattedvalue = new CellNumberFormatter(formatstringparts[0]).format(cellvalue);
}
}
if (cellvalue < 0) {
if ("general".equals(formatstringparts[1].toLowerCase())) {
formattedvalue = new CellGeneralFormatter().format(cellvalue);
} else {
formattedvalue = new CellNumberFormatter(formatstringparts[1]).format(cellvalue);
}
}
break;
default:
if ("general".equals(formatstringparts[0].toLowerCase())) {
formattedvalue = new CellGeneralFormatter().format(cellvalue);
} else {
formattedvalue = new CellNumberFormatter(formatstringparts[0]).format(cellvalue);
}
}
}
System.out.println(formattedvalue);
break;
//...
default:
System.out.println();
}
}
}
} catch (InvalidFormatException ifex) {
} catch (FileNotFoundException fnfex) {
} catch (IOException ioex) {
}
}
}
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