使用POI生成Excel文件，可以自动调整excel列宽

//autoSizeColumn()方法自动调整excel列宽

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93

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) {                           //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());          }      }   }