我想用3列N行从Java读写Excel文件，在每个单元格中打印一个字符串。谁能给我简单的代码片段吗？我是否需要使用任何外部库，或者Java是否内置支持？
我要执行以下操作：
for(i=0; i <rows; i++) //read [i,col1] ,[i,col2], [i,col3] for(i=0; i<rows; i++) //write [i,col1], [i,col2], [i,col3]
Apache POI可以为你做到这一点。特别是HSSF模块。该快速指南是最有用的。这是你想做什么的方法-专门创建一张纸并将其写出来。
Workbook wb = new HSSFWorkbook(); //Workbook wb = new XSSFWorkbook(); CreationHelper createHelper = wb.getCreationHelper(); Sheet sheet = wb.createSheet("new sheet"); // Create a row and put some cells in it. Rows are 0 based. Row row = sheet.createRow((short)0); // Create a cell and put a value in it. Cell cell = row.createCell(0); cell.setCellValue(1); // Or do it on one line. row.createCell(1).setCellValue(1.2); row.createCell(2).setCellValue( createHelper.createRichTextString("This is a string")); row.createCell(3).setCellValue(true); // Write the output to a file FileOutputStream fileOut = new FileOutputStream("workbook.xls"); wb.write(fileOut); fileOut.close();
