使用POI生成Excel文件，可以自动调整excel列宽等（转）
importjava.io.FileOutputStream;

importorg.apache.poi.hssf.usermodel.HSSFCell;
importorg.apache.poi.hssf.usermodel.HSSFCellStyle;
importorg.apache.poi.hssf.usermodel.HSSFFont;
importorg.apache.poi.hssf.usermodel.HSSFRow;
importorg.apache.poi.hssf.usermodel.HSSFSheet;
importorg.apache.poi.hssf.usermodel.HSSFWorkbook;
importorg.apache.poi.hssf.usermodel.HSSFRichTextString;
importorg.apache.poi.hssf.usermodel.HSSFDataFormat;
importorg.apache.poi.hssf.usermodel.HSSFComment;
importorg.apache.poi.hssf.usermodel.HSSFPatriarch;
importorg.apache.poi.hssf.usermodel.HSSFClientAnchor;

publicclassPoiCreateExcelTest {
????publicstaticvoidmain(String[] args) {
????????/**
????????? * @see<a href="http://poi.apache.org/hssf/quick-guide.html#NewWorkbook">For more</a>
?????????*/????????
????????//创建新的Excel 工作簿
???????? HSSFWorkbook workbook =newHSSFWorkbook();
????????
????????//在Excel工作簿中建一工作表，其名为缺省值, 也可以指定Sheet名称
???????? HSSFSheet sheet =workbook.createSheet();
????????//HSSFSheet sheet = workbook.createSheet("SheetName");
????????
????????//用于格式化单元格的数据
???????? HSSFDataFormat format =workbook.createDataFormat();
????????
????????//创建新行(row),并将单元格(cell)放入其中. 行号从0开始计算.
???????? HSSFRow row =sheet.createRow((short) 1);

????????//设置字体
???????? HSSFFont font =workbook.createFont();
???????? font.setFontHeightInPoints((short) 20); //字体高度
???????? font.setColor(HSSFFont.COLOR_RED); //字体颜色
???????? font.setFontName("黑体"); //字体
???????? font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD); //宽度
???????? font.setItalic(true); //是否使用斜体
//???????? font.setStrikeout(true); //是否使用划线

????????//设置单元格类型
???????? HSSFCellStyle cellStyle =workbook.createCellStyle();
???????? cellStyle.setFont(font);
???????? cellStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER); //水平布局：居中
???????? cellStyle.setWrapText(true);
????????
????????//添加单元格注释
????????//创建HSSFPatriarch对象,HSSFPatriarch是所有注释的容器.
???????? HSSFPatriarch patr =sheet.createDrawingPatriarch();
????????//定义注释的大小和位置,详见文档
???????? HSSFComment comment =patr.createComment(newHSSFClientAnchor(0, 0, 0, 0, (short)4, 2, (short) 6, 5));
????????//设置注释内容
???????? comment.setString(newHSSFRichTextString("可以在POI中添加注释！"));
????????//设置注释作者. 当鼠标移动到单元格上是可以在状态栏中看到该内容.
???????? comment.setAuthor("Xuys.");
????????
????????//创建单元格
???????? HSSFCell cell =row.createCell((short) 1);
???????? HSSFRichTextString hssfString =newHSSFRichTextString("Hello World!");
???????? cell.setCellValue(hssfString);//设置单元格内容
???????? cell.setCellStyle(cellStyle);//设置单元格样式
???????? cell.setCellType(HSSFCell.CELL_TYPE_STRING);//指定单元格格式：数值、公式或字符串
???????? cell.setCellComment(comment);//添加注释

????????//格式化数据
???????? row =sheet.createRow((short) 2);
???????? cell =row.createCell((short) 2);
???????? cell.setCellValue(11111.25);
???????? cellStyle =workbook.createCellStyle();
???????? cellStyle.setDataFormat(format.getFormat("0.0"));
???????? cell.setCellStyle(cellStyle);

???????? row =sheet.createRow((short) 3);
???????? cell =row.createCell((short) 3);
???????? cell.setCellValue(9736279.073);
???????? cellStyle =workbook.createCellStyle();
???????? cellStyle.setDataFormat(format.getFormat("#,##0.0000"));
???????? cell.setCellStyle(cellStyle);
????????
????????
???????? sheet.autoSizeColumn((short)0); //调整第一列宽度
???????? sheet.autoSizeColumn((short)1); //调整第二列宽度
???????? sheet.autoSizeColumn((short)2); //调整第三列宽度
???????? sheet.autoSizeColumn((short)3); //调整第四列宽度

????????try{
???????????? FileOutputStream fileOut =newFileOutputStream("C:\3.xls");
???????????? workbook.write(fileOut);
???????????? fileOut.close();
???????? }catch(Exception e) {
???????????? System.out.println(e.toString());
???????? }
???? }

}