java excel到csv文件转换
我正在尝试将.xlsx文件转换为.csv,正在进行转换,但数据格式不正确。请查找下面的代码,并建议对代码进行更改 在这里,我试图读取一个.xlsx文件并将其写入csv文件,即将xlsx转换为csv,但我没有获得正确格式的.csv文件。所有数据都显示在一个单独的文件中,但它必须像Excel中的行一样显示java excel到csv文件转换,java,excel,csv,Java,Excel,Csv,我正在尝试将.xlsx文件转换为.csv,正在进行转换,但数据格式不正确。请查找下面的代码,并建议对代码进行更改 在这里,我试图读取一个.xlsx文件并将其写入csv文件,即将xlsx转换为csv,但我没有获得正确格式的.csv文件。所有数据都显示在一个单独的文件中,但它必须像Excel中的行一样显示 import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; impo
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Iterator;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
class XlstoCSV
{
static void xls(File inputFile, File outputFile)
{
// For storing data into CSV files
StringBuffer data = new StringBuffer();
try
{
FileOutputStream fos = new FileOutputStream(outputFile);
// Get the workbook object for XLS file
HSSFWorkbook workbook = new HSSFWorkbook(new FileInputStream(inputFile));
// Get first sheet from the workbook
HSSFSheet sheet = workbook.getSheetAt(0);
Cell cell;
Row row;
// Iterate through each rows from first sheet
Iterator<Row> rowIterator = sheet.iterator();
while (rowIterator.hasNext())
{
row = rowIterator.next();
// For each row, iterate through each columns
Iterator<Cell> cellIterator = row.cellIterator();
while (cellIterator.hasNext())
{
cell = cellIterator.next();
switch (cell.getCellType())
{
case Cell.CELL_TYPE_BOOLEAN:
data.append(cell.getBooleanCellValue() + ",");
break;
case Cell.CELL_TYPE_NUMERIC:
data.append(cell.getNumericCellValue() + ",");
break;
case Cell.CELL_TYPE_STRING:
data.append(cell.getStringCellValue() + ",");
break;
case Cell.CELL_TYPE_BLANK:
data.append("" + ",");
break;
default:
data.append(cell + ",");
}
data.append('\n');
}
}
fos.write(data.toString().getBytes());
fos.close();
}
catch (FileNotFoundException e)
{
e.printStackTrace();
}
catch (IOException e)
{
e.printStackTrace();
}
}
public static void main(String[] args)
{
File in`enter code here`putFile = new File("C:\test.xls");
File outputFile = new File("C:\output.csv");
xls(inputFile, outputFile);
}
}
导入java.io.File;
导入java.io.FileInputStream;
导入java.io.FileNotFoundException;
导入java.io.FileOutputStream;
导入java.io.IOException;
导入java.util.Iterator;
导入org.apache.poi.hssf.usermodel.HSSFSheet;
导入org.apache.poi.hssf.usermodel.HSSFWorkbook;
导入org.apache.poi.ss.usermodel.Cell;
导入org.apache.poi.ss.usermodel.Row;
类别XlstoCSV
{
静态void xls(文件输入文件、文件输出文件)
{
//用于将数据存储到CSV文件中
StringBuffer数据=新的StringBuffer();
尝试
{
FileOutputStream fos=新的FileOutputStream(outputFile);
//获取XLS文件的工作簿对象
HSSFWorkbook=新的HSSFWorkbook(新文件InputStream(inputFile));
//从工作簿中获取第一张工作表
HSSFSheet sheet=工作簿。getSheetAt(0);
细胞;
行行;
//从第一张图纸开始遍历每行
迭代器rowIterator=sheet.Iterator();
while(roweiterator.hasNext())
{
行=行迭代器。下一步();
//对于每一行,遍历每一列
迭代器cellIterator=row.cellIterator();
while(cellIterator.hasNext())
{
cell=cellIterator.next();
开关(cell.getCellType())
{
case Cell.Cell\u类型\u布尔值:
data.append(cell.getBooleanCellValue()+“,”);
打破
case Cell.Cell\u类型\u数值:
data.append(cell.getNumericCellValue()+“,”);
打破
case Cell.Cell\u类型\u字符串:
data.append(cell.getStringCellValue()+“,”);
打破
case Cell.Cell\u类型\u空白:
数据。追加(“+”,”);
打破
违约:
数据。追加(单元格+“,”);
}
data.append('\n');
}
}
fos.write(data.toString().getBytes());
fos.close();
}
catch(filenotfounde异常)
{
e、 printStackTrace();
}
捕获(IOE异常)
{
e、 printStackTrace();
}
}
公共静态void main(字符串[]args)
{
文件位于`enter code here`putFile=新文件(“C:\test.xls”);
File outputFile=新文件(“C:\output.csv”);
xls(输入文件,输出文件);
}
}
问题在于,您在每个单元格后都要追加一行,如下所示:
data.append('\n');
你需要在每一排之后做
还请注意,最好使用适当的CSV库进行序列化,因为它将正确处理转义字符串。问题是您在每个单元格后都要追加一行,如下所示:
data.append('\n');
你需要在每一排之后做
还请注意,最好使用适当的CSV库进行序列化,因为它将正确处理转义字符串。尝试将代码更改为此 您的新行字符必须在一行读取后追加
while (rowIterator.hasNext())
{
row = rowIterator.next();
// For each row, iterate through each columns
Iterator<Cell> cellIterator = row.cellIterator();
while (cellIterator.hasNext())
{
cell = cellIterator.next();
switch (cell.getCellType())
{
case Cell.CELL_TYPE_BOOLEAN:
data.append(cell.getBooleanCellValue() + ",");
break;
case Cell.CELL_TYPE_NUMERIC:
data.append(cell.getNumericCellValue() + ",");
break;
case Cell.CELL_TYPE_STRING:
data.append(cell.getStringCellValue() + ",");
break;
case Cell.CELL_TYPE_BLANK:
data.append("" + ",");
break;
default:
data.append(cell + ",");
}
}
data.append('\n');
}
while(roweiterator.hasNext())
{
行=行迭代器。下一步();
//对于每一行,遍历每一列
迭代器cellIterator=row.cellIterator();
while(cellIterator.hasNext())
{
cell=cellIterator.next();
开关(cell.getCellType())
{
case Cell.Cell\u类型\u布尔值:
data.append(cell.getBooleanCellValue()+“,”);
打破
case Cell.Cell\u类型\u数值:
data.append(cell.getNumericCellValue()+“,”);
打破
case Cell.Cell\u类型\u字符串:
data.append(cell.getStringCellValue()+“,”);
打破
case Cell.Cell\u类型\u空白:
数据。追加(“+”,”);
打破
违约:
数据。追加(单元格+“,”);
}
}
data.append('\n');
}
尝试将您的代码更改为
您的新行字符必须在一行读取后追加
while (rowIterator.hasNext())
{
row = rowIterator.next();
// For each row, iterate through each columns
Iterator<Cell> cellIterator = row.cellIterator();
while (cellIterator.hasNext())
{
cell = cellIterator.next();
switch (cell.getCellType())
{
case Cell.CELL_TYPE_BOOLEAN:
data.append(cell.getBooleanCellValue() + ",");
break;
case Cell.CELL_TYPE_NUMERIC:
data.append(cell.getNumericCellValue() + ",");
break;
case Cell.CELL_TYPE_STRING:
data.append(cell.getStringCellValue() + ",");
break;
case Cell.CELL_TYPE_BLANK:
data.append("" + ",");
break;
default:
data.append(cell + ",");
}
}
data.append('\n');
}
while(roweiterator.hasNext())
{
行=行迭代器。下一步();
//对于每一行,遍历每一列
迭代器cellIterator=row.cellIterator();
while(cellIterator.hasNext())
{
cell=cellIterator.next();
开关(cell.getCellType())
{
case Cell.Cell\u类型\u布尔值:
data.append(cell.getBooleanCellValue()+“,”);
打破
case Cell.Cell\u类型\u数值:
data.append(cell.getNumericCellValue()+“,”);
打破
case Cell.Cell\u类型\u字符串:
data.append(cell.getStringCellValue()+“,”);
打破
case Cell.Cell\u类型\u空白:
数据。追加(“+”,”);
打破
违约:
数据。追加(单元格+“,”);
}
}
data.append('\n');
}
这是一篇很老的帖子,但会帮助别人。。有多张床单
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.util.Iterator;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
class XlStoCSV {
static void xls(File inputFile) {
// Get the workbook object for XLS file
int count = 0;
try {
HSSFWorkbook workbook = new HSSFWorkbook(new FileInputStream(
inputFile));
for (int l = workbook.getNumberOfSheets() - 1; l >= 0; l--) {
File outputFile = new File(System.getProperty("user.dir")
+ "/output/"+inputFile.getName()+"-"+workbook.getSheetName(count) +".csv");
// For storing data into CSV files
StringBuffer data = new StringBuffer();
FileOutputStream fos = new FileOutputStream(outputFile);
HSSFSheet sheet = workbook.getSheetAt(count);
Cell cell;
Row row;
// Iterate through each rows from first sheet
Iterator<Row> rowIterator = sheet.iterator();
while (rowIterator.hasNext()) {
row = rowIterator.next();
// For each row, iterate through each columns
Iterator<Cell> cellIterator = row.cellIterator();
int columnNumber = 1;
while (cellIterator.hasNext()) {
cell = cellIterator.next();
if (columnNumber > 1)
{
data.append(",");
}
switch (cell.getCellType()) {
case Cell.CELL_TYPE_BOOLEAN:
data.append(cell.getBooleanCellValue());
break;
case Cell.CELL_TYPE_NUMERIC:
data.append(cell.getNumericCellValue() );
break;
case Cell.CELL_TYPE_STRING:
data.append(cell.getStringCellValue());
break;
case Cell.CELL_TYPE_BLANK:
data.append("");
break;
default:
data.append(cell);
}
++columnNumber;
}
data.append('\n');
}
fos.write(data.toString().getBytes());
fos.close();
count++;
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
File inputFile = new File(System.getProperty("user.dir") + "/assets/"
+ "test.xls");
xls(inputFile);
}
}
导入java.io.BufferedWriter;
导入java.io.File;
导入java.io.FileInputStream;
导入java.io.FileNotFoundException;
导入java.io.FileOutputStream;
导入java.io.IOException;
进口ja