自动换行 apache POI (Excel) [英] Auto wrap in apache POI (Excel)

问题描述

我有一个 java 程序，它将标题和数据作为输入并生成一个 excel 文件.

I have a java program which takes header and data as the input and produces an excel file.

但是，有时当标题值很长且列数更多时，我的 Excel 表格往往会变得不必要地宽.

However, sometimes when the header values are long and the number of columns are more, my excel sheet tends to be unnecessarily wide.

由于标题的原因，我必须向下滚动到右侧才能看到尾端列的内容.

Because of the headers, I will have to scroll down to right to see the content of the tail end columns.

有没有办法解决这个问题，如果单元格中的内容大于值x，然后自动换行并自动调整行高并固定列宽.

Is there a way I can resolve this such that if the content in the cell is bigger then say value x, then auto wrap occurrs and automatically the row height gets adjusted and the column width gets fixed.

我正在寻找的粗略算法是:

The rough algorithm for what I am looking for is:

 if(content.size is more then 50 chars){
       - apply auto wrap with centred text
       - adjust the row height accordingly
       - adjust all the cells in the column accordingly
 }

如果有人能指点我一些在线可用的例子.

If someone could point me to some example available online.

感谢阅读！

推荐答案

你应该可以用 Cell 风格来实现这一点，我已经尝试整理了一个例子来展示:

You should be able to achieve this with a Cell style, I have tried to put together an example to show:

public class SO{
    public static void main(String[] args) {

        try {
            FileInputStream is = new FileInputStream(new File("D:\\Users\\user2777005\\Desktop\\bob.xlsx"));
            XSSFWorkbook wb = new XSSFWorkbook(is);
            String header = "123456789123456789123456789123456789123456789123456789123456789123456789123456789123456789123456789";
            Sheet sheet = wb.getSheet("Sheet1");
            sheet.setColumnWidth(0, 18000);
            Row row = sheet.createRow(0);
            Cell cell = row.createCell(0);

            if(header.length() > 50){ //Length of String for my test
                sheet.setColumnWidth(0, 18000); //Set column width, you'll probably want to tweak the second int
                CellStyle style = wb.createCellStyle(); //Create new style
                style.setWrapText(true); //Set wordwrap
                cell.setCellStyle(style); //Apply style to cell
                cell.setCellValue(header); //Write header
            }

            wb.write(new FileOutputStream(new File("D:\\Users\\user2777005\\Desktop\\bob.xlsx")));
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}       

祝你好运！

这篇关于自动换行 apache POI (Excel)的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！