因此，我目前正在创建一个程序，使用 JXL Java 库读取、编辑现有 Excel 文件中的数据并将其放入新的 Excel 文件中。在此阶段，我只想从现有 Excel 文件中读取数据并将其放入新文件中。似乎找不到一个好的方法来做到这一点，对于 future 的工作来说，编辑数据(具有某些列)并将其放入新的 Excel 文件中的最佳方法是什么。
抱歉，如果有任何不清楚的地方，只是掌握 Java 和 Stackoverflow。
import java.io.*;
import jxl.*;
import jxl.write.Number;
import jxl.write.*;
class Extraction {
private String inputFile;
String data;
public void setInputFile(String inputFile){
this.inputFile = inputFile;
}
public void read() throws IOException {
File spreadsheet = new File(inputFile);
Workbook w;
try {
w = Workbook.getWorkbook(spreadsheet);
Sheet page = w.getSheet(0);
File f = new File("C:\\Users\\alex\\Desktop\\New_Export.xls");
if (!f.exists()){
String FileName = "C:\\Users\\alex\\Desktop\\New_Export.xls";
WritableWorkbook excel = Workbook.createWorkbook(new File(FileName));
WritableSheet sheet = excel.createSheet("Sheet1", 0);
for (int y = 0; y < page.getRows(); y++){
for (int x = 0; x < page.getColumns(); x++){
Cell cell = page.getCell(x ,y +1);
CellType type = cell.getType();
if(type == CellType.LABEL || type == CellType.NUMBER){
data = cell.getContents();
System.out.println(data);
//To now input the read data into the new Excel File
sheet.addCell();
}
}
System.out.println(" ");
}
System.out.println("The File Has Successfully Been Created!");
excel.write();
excel.close();
}
else{
System.err.println("File is already created!");
}
}
catch(Exception e){
System.out.println(" ");
}
}
public static void main (String args[]) throws IOException{
Extraction reading = new Extraction();
reading.setInputFile("C:\\Users\\alex\\Desktop\\export.xls");
reading.read();
}
}
最佳答案
使用apache的“poi”，您可以使用下面的代码读取excel(*.xls)
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;
private void readingExcel(String fileName) {
try (FileInputStream file = new FileInputStream(new File(fileName))) {
HSSFWorkbook workbook = new HSSFWorkbook(file);
HSSFSheet sheet = workbook.getSheetAt(0);
Iterator<Row> rowIterator = sheet.iterator();
for (Row row : sheet) {
Iterator<Cell> cellIterator = row.cellIterator();
for (Cell cell : row) {
System.out.println(cell.getStringCellValue());
}
}
} catch (IOException ioException) {
ioException.printStackTrace();
}
}
用于写入 Excel
private File writingToExcel() {
HSSFWorkbook workbook = new HSSFWorkbook();
HSSFSheet sheet = workbook.createSheet("Sample-sheet");
Row row = sheet.createRow(0);
Cell cell = row.createCell(0);
cell.setCellValue("My Sample Value");
File file = new File(sheet.getSheetName());
return file;
}
但是，如果要使用*.xlsx，则用来读取的类是
XSSFWorkbook workbook = new XSSFWorkbook (file);
XSSFSheet sheet = workbook.getSheetAt(0);
关于java - 使用 Java 从现有 Excel 文件读取单元格并将其写入新的 Excel 文件，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/34310442/