当希望指向文件时，正常应设置为HSSFHyperlink.LINK_FILE，但指向目录中有中文时，会出现乱码并导致无法超链，

可更改为HSSFHyperlink.LINK_URL解决此问题

如何读取超链接

    HSSFSheet sheet = workbook.getSheetAt(0);

HSSFCell cell = sheet.getRow(0).getCell((short)0);

    HSSFHyperlink link = cell.getHyperlink();

    if(link != null){

        System.out.println(link.getAddress());

    }

如何设置超链接

    HSSFWorkbook wb = new HSSFWorkbook();

//超链接的单元格风格

    //超链接默认的是蓝色底边框

    HSSFCellStyle hlink_style = wb.createCellStyle();

    HSSFFont hlink_font = wb.createFont();

    hlink_font.setUnderline(HSSFFont.U_SINGLE);

    hlink_font.setColor(HSSFColor.BLUE.index); 

    hlink_style.setFont(hlink_font);

HSSFCell cell;

    HSSFSheet sheet = wb.createSheet("Hyperlinks");

//URL

    cell = sheet.createRow(0).createCell((short)0);

    cell.setCellValue("URL Link");

    HSSFHyperlink link = new HSSFHyperlink(HSSFHyperlink.LINK_URL);

    link.setAddress("");

    cell.setHyperlink(link);

    cell.setCellStyle(hlink_style);

//链接到当前路径的一个文件

    cell = sheet.createRow(1).createCell((short)0);

    cell.setCellValue("File Link");

    link = new HSSFHyperlink(HSSFHyperlink.LINK_FILE);

    link.setAddress("link1.xls");

    cell.setHyperlink(link);

    cell.setCellStyle(hlink_style);

//链接到e-mail 

    cell = sheet.createRow(2).createCell((short)0);

    cell.setCellValue("Email Link");

    link = new HSSFHyperlink(HSSFHyperlink.LINK_EMAIL);

    //note, if subject contains white spaces, make sure they are url-encoded

    link.setAddress("mailto:poi@apache.org?subject=Hyperlinks");

    cell.setHyperlink(link);

    cell.setCellStyle(hlink_style);

//链接到 workbook的某个地方

//创建一个目标Sheet和单元格

    HSSFSheet sheet2 = wb.createSheet("Target Sheet");

    sheet2.createRow(0).createCell((short)0).setCellValue("Target Cell");

cell = sheet.createRow(3).createCell((short)0);

    cell.setCellValue("Worksheet Link");

    link = new HSSFHyperlink(HSSFHyperlink.LINK_DOCUMENT);

    link.setAddress("'Target Sheet'!A1");

    cell.setHyperlink(link);

    cell.setCellStyle(hlink_style);

FileOutputStream out = new FileOutputStream("c://hssf-links.xls");

    wb.write(out);

    out.close();