Question

我已经下载了Apache Poi Jar，但是当我编写以下代码（youtube讲师轻松运行）时，它没有给我任何输出excel文件。我在这做错了什么？我将鼠标悬停在HSSFWorkbook eclipse上告诉我

org.apache.poi.hssf.usermodel.HSSFWorkbook Note: This element neither has attached source nor attached Javadoc and hence no Javadoc could be found.

代码。

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;

public class WriteExcel {

    public static void main(String[] args) throws FileNotFoundException, IOException {

        HSSFWorkbook workbook= new HSSFWorkbook();
        HSSFSheet sheet= workbook.createSheet("FirstExcelSheet");
        HSSFRow row= sheet.createRow(0);
        HSSFCell cell= row.createCell(0);
        cell.setCellValue("1,Cell");
        workbook.write(new FileOutputStream("excel.xls"));      
        workbook.close();
        workbook.getFirstVisibleTab();
    }
}

Answer 1

首先使用XSSFWorkbook而不是HSSFWorkbook来看看这个link，你需要输出这个文件的第二件事就是添加这一行

try (FileOutputStream outputStream = new FileOutputStream("slsx.xlsx")) {
            workbook.write(outputStream);

所以你的代码应该是这样的

 public static void main(String[] args) throws Exception {

    XSSFWorkbook workbook = new XSSFWorkbook();

    XSSFSheet spreadsheet = workbook.createSheet("sheet1");

    XSSFRow row = spreadsheet.createRow(1);
    XSSFCell cell = row.createCell(1);
    cell.setCellValue("test");
    try (FileOutputStream out = new FileOutputStream(new File("Writesheet.xlsx"))) {
        workbook.write(out);
    }
    System.out.println("Writesheet.xlsx written successfully");
}

Answer 2

你应该在这一行添加你的路径，如：

workbook.write(new FileOutputStream("{yourpath}/excel.xls"));

它有效..

HSSFWorkbook：这个元素既没有附加源也没有附加Javadoc，因此找不到Javadoc

2 个答案: