java - 如何使用 Apache POI 创建链接到长 url 的 Excel 超链接

Question

Excel 有 hyper link size limit of 255 .

现在，我使用 Apache POI 以编程方式填写 Excel，但使用 s3 预签名 URL，其长度远远超过 255 个字符，长度超过 1350。

当我单击在 Excel 中创建的超链接时，它显示如下警报:“发生意外错误。”

这是我相应的代码:

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.apache.poi.common.usermodel.HyperlinkType;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.CreationHelper;
import org.apache.poi.ss.usermodel.FillPatternType;
import org.apache.poi.ss.usermodel.IndexedColors;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.xssf.usermodel.XSSFCellStyle;
import org.apache.poi.xssf.usermodel.XSSFFont;
import org.apache.poi.xssf.usermodel.XSSFHyperlink;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

  public void generateExcel(List<FunctionalTestCaseResult> data) {

      XSSFWorkbook workbook = new XSSFWorkbook();
      CreationHelper createHelper = workbook.getCreationHelper();
      XSSFSheet sheet = workbook.createSheet("Sheet1");

      int rowNum = 0;
      Row row = sheet.createRow(rowNum++);
      int cellNum = 0;
      CellStyle captionStyle = workbook.createCellStyle();
      captionStyle.setFillForegroundColor(IndexedColors.LIGHT_BLUE.getIndex());
      captionStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);

      //create hyper link style
      XSSFCellStyle hlinkstyle = workbook.createCellStyle();
      XSSFFont hlinkfont = workbook.createFont();
      hlinkfont.setUnderline(XSSFFont.U_SINGLE);
      hlinkfont.setColor(IndexedColors.BLUE.index);
      hlinkstyle.setFont(hlinkfont);

      Cell cell = row.createCell(cellNum++);

      XSSFHyperlink link = (XSSFHyperlink)createHelper.createHyperlink(HyperlinkType.URL);
      link.setAddress(recordingS3Url);
      cell.setHyperlink(link);
      cell.setCellValue("Recording url");
      cell.setCellStyle(hlinkstyle);

  }

Answer 1

您提到的限制与公式中的 =HYPERLINK 函数有关。 Excel 公式的长度不能超过 255 个字符。

默认单元格超链接的 URL 长度没有限制。以下代码创建一个单元格，该单元格具有指向长度为 1554 个字符的 URL 的 super 链接。

import java.io.FileOutputStream;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.apache.poi.common.usermodel.HyperlinkType;

class CreateExcelHyperlinkLongURL {

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

  String url = "https://www.google.de/search?&q=Lorem+ipsum+dolor+sit+amet%2C+consetetur+sadipscing+elitr%2C+sed+diam+nonumy+eirmod+tempor+invidunt+ut+labore+et+dolore+magna+aliquyam+erat%2C+sed+diam+voluptua.+At+vero+eos+et+accusam+et+justo+duo+dolores+et+ea+rebum.+Stet+clita+kasd+gubergren%2C+no+sea+takimata+sanctus+est+Lorem+ipsum+dolor+sit+amet.+Lorem+ipsum+dolor+sit+amet%2C+consetetur+sadipscing+elitr%2C+sed+diam+nonumy+eirmod+tempor+invidunt+ut+labore+et+dolore+magna+aliquyam+erat%2C+sed+diam+voluptua.+At+vero+eos+et+accusam+et+justo+duo+dolores+et+ea+rebum.+Stet+clita+kasd+gubergren%2C+no+sea+takimata+sanctus+est+Lorem+ipsum+dolor+sit+amet.&oq=Lorem+ipsum+dolor+sit+amet%2C+consetetur+sadipscing+elitr%2C+sed+diam+nonumy+eirmod+tempor+invidunt+ut+labore+et+dolore+magna+aliquyam+erat%2C+sed+diam+voluptua.+At+vero+eos+et+accusam+et+justo+duo+dolores+et+ea+rebum.+Stet+clita+kasd+gubergren%2C+no+sea+takimata+sanctus+est+Lorem+ipsum+dolor+sit+amet.+Lorem+ipsum+dolor+sit+amet%2C+consetetur+sadipscing+elitr%2C+sed+diam+nonumy+eirmod+tempor+invidunt+ut+labore+et+dolore+magna+aliquyam+erat%2C+sed+diam+voluptua.+At+vero+eos+et+accusam+et+justo+duo+dolores+et+ea+rebum.+Stet+clita+kasd+gubergren%2C+no+sea+takimata+sanctus+est+Lorem+ipsum+dolor+sit+amet.+Lorem+ipsum+dolor+sit+amet%2C+consetetur+sadipscing+elitr%2C+sed+diam+nonumy+eirmod+tempor+invidunt+ut+labore+et+dolore+magna+aliquyam+erat%2C+sed+diam+voluptua.+At+vero+eos+et+accusam+et+justo+duo+dolores+et+ea+rebum.+Stet+clita+kasd+gubergren%2C+no+sea+takimata+sanctus+est+Lorem+ipsum+dolor+sit+amet.";

  int urlLength = url.length();

  System.out.println(urlLength);

  try (Workbook workbook = new XSSFWorkbook(); 
       FileOutputStream fileout = new FileOutputStream("Excel.xlsx") ) {

   Sheet sheet = workbook.createSheet(); 

   Hyperlink link = workbook.getCreationHelper().createHyperlink(HyperlinkType.URL);
   link.setAddress(url);
 
   Row row = sheet.createRow(0);
   Cell cell = row.createCell(0);
   String cellText = "Open link to long URL having length of " + urlLength + " characters.";
   cell.setCellValue(cellText);
   cell.setHyperlink(link);
 
   sheet.setColumnWidth(0, cellText.length() * 256);

   workbook.write(fileout);
  }

 }
}

这对我使用 apache poi 4.1.0 和 Excel 2016 有效。

如果 URL 太长，则某些 Excel 版本无法正确打开 *.xlsx 文件。发生这种情况的确切 URL 长度似乎有所不同，具体取决于 Excel 版本。