在JAVA中使用Apache POI格式化Excel電子表格

Question

我的意圖是為電子表格數據的內容設置邊框，同時保持單元格的其他屬性不變。

下面的代碼格式化（設置邊框）整個電子表格，而不是僅格式化電子表格中存在實際數據的部分。

是否有理由將格式設置應用於整個電子表格？ 有辦法克服嗎？

package learning.selenium.self.begining;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.Iterator;

import org.apache.poi.ss.usermodel.BorderStyle;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.usermodel.WorkbookFactory;

public class testing {

    public static void main(String[] args) throws Exception {
        File myFile = new File("TestFile.xlsx");
        Workbook myWorkbook = WorkbookFactory.create(new FileInputStream(myFile));
        Sheet mySheet = myWorkbook.getSheetAt(0);

        Iterator<Row> r = mySheet.rowIterator();
        while (r.hasNext()) {
            Row myR = r.next();
            Iterator<Cell> c = myR.cellIterator();
            while (c.hasNext()) {
                Cell myC = c.next();
                System.out.println("precessing (" + myR.getRowNum() + "," + myC.getColumnIndex() + ")");
                CellStyle s = myC.getCellStyle();
                s = myC.getCellStyle();
                s.setBorderBottom(BorderStyle.THIN);
                s.setBorderTop(BorderStyle.THIN);
                s.setBorderLeft(BorderStyle.THIN);
                s.setBorderRight(BorderStyle.THIN);
                myC.setCellStyle(s);
            }
        }

        FileOutputStream fos = new FileOutputStream(myFile);
        myWorkbook.write(fos);
        fos.close();
    }
}

Answer 1

我不知道這是否有幫助，但值得檢查

CellRangeAddress range= new CellRangeAddress(firstrow, lastrow, firstcol, lastcol); 

RegionUtil.setBorderBottom(BorderStyle.THIN, range, sheet);

您可以為其他邊界設置相同的方法。