直接上代码：
官网上的抄的api例子：
package com.test; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.util.Calendar; import java.util.Date; import org.apache.poi.EncryptedDocumentException; import org.apache.poi.hssf.extractor.ExcelExtractor; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.hssf.usermodel.HeaderFooter; import org.apache.poi.openxml4j.exceptions.InvalidFormatException; import org.apache.poi.openxml4j.opc.OPCPackage; import org.apache.poi.poifs.filesystem.NPOIFSFileSystem; import org.apache.poi.poifs.filesystem.POIFSFileSystem; import org.apache.poi.ss.usermodel.Cell; import org.apache.poi.ss.usermodel.CellStyle; import org.apache.poi.ss.usermodel.CreationHelper; import org.apache.poi.ss.usermodel.DataFormat; import org.apache.poi.ss.usermodel.DateUtil; import org.apache.poi.ss.usermodel.Font; import org.apache.poi.ss.usermodel.Footer; import org.apache.poi.ss.usermodel.IndexedColors; import org.apache.poi.ss.usermodel.PrintSetup; import org.apache.poi.ss.usermodel.Row; import org.apache.poi.ss.usermodel.Sheet; import org.apache.poi.ss.usermodel.Workbook; import org.apache.poi.ss.usermodel.WorkbookFactory; import org.apache.poi.ss.util.CellRangeAddress; import org.apache.poi.ss.util.CellReference; import org.apache.poi.ss.util.CellUtil; import org.apache.poi.ss.util.RegionUtil; import org.apache.poi.ss.util.WorkbookUtil; import org.apache.poi.xssf.usermodel.XSSFCell; import org.apache.poi.xssf.usermodel.XSSFCellStyle; import org.apache.poi.xssf.usermodel.XSSFColor; import org.apache.poi.xssf.usermodel.XSSFRow; import org.apache.poi.xssf.usermodel.XSSFSheet; import org.apache.poi.xssf.usermodel.XSSFWorkbook; import org.junit.Test; /** * 根据api一些简单操作 * @author Administrator * */ public class CreateExcel { String str="C:\\Users\\Administrator.PMIMP83HWNIKWOV\\Desktop\\poi\\create workbook"; public static void main(String[] args) { CreateExcel ce=new CreateExcel(); // String str="C:\\Users\\Administrator.PMIMP83HWNIKWOV\\Desktop\\poi\\create workbook"; // ce.createSheet(new HSSFWorkbook(), str+"\\demo0.xls"); // ce.createCell(); ce.createDateCell(); } /** * 创建Workbook */ public void createWorkbook(){ Workbook wb=null; FileOutputStream fileOut=null; try { wb=new HSSFWorkbook(); fileOut=new FileOutputStream(str+"\\demo.xls"); wb.write(fileOut); fileOut.close(); wb=new XSSFWorkbook(); fileOut=new FileOutputStream(str+"\\demo1.xlsx"); wb.write(fileOut); fileOut.close(); } catch (IOException e) { e.printStackTrace(); } } //建表，不要问我为什么注释有些是英文的，官网上扣下来的 public void createSheet(Workbook wb,String filename){ Sheet sheet1=wb.createSheet("sheet1"); // Note that sheet name is Excel must not exceed 31 characters // and must not contain any of the any of the following characters: // 0x0000 // 0x0003 // colon (:) // backslash (\) // asterisk (*) // question mark (?) // forward slash (/) // opening square bracket ([) // closing square bracket (]) // You can use org.apache.poi.ss.util.WorkbookUtil#createSafeSheetName(String nameProposal)} // for a safe way to create valid names, this utility replaces invalid characters with a space (' ') String safeName=WorkbookUtil.createSafeSheetName("[O'Briend's sales*?]");//这个方法会去除名称字符串中的不合法字符 Sheet sheet3=wb.createSheet(safeName); try { FileOutputStream fileOut=new FileOutputStream(filename, true); wb.write(fileOut); fileOut.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } /** * 创建细胞，也就是创建格子 */ public void createCell(){ Workbook wb=new HSSFWorkbook();//xsl //Workbook wb=new XSSFWorkbook(); CreationHelper createHelper=wb.getCreationHelper(); Sheet sheet=wb.createSheet("sheet3"); //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);//不填写类型的话，默认的类型是this.createCell(column,HSSFCell.CELL_TYPE_BLANK); cell.setCellValue(1); //or do it on one line row.createCell(1).setCellValue(1.2);//创建和赋值连成一行 row.createCell(2).setCellValue(createHelper.createRichTextString("This is a string")); row.createCell(3).setCellValue(true); row.createCell(4).setCellValue("nihao"); //write the output to a file try { FileOutputStream fileOut=new FileOutputStream("C:\\Users\\Administrator.PMIMP83HWNIKWOV\\Desktop\\poi\\create workbook\\demo.xls",true); wb.write(fileOut); fileOut.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } //创建日期类型cell public void createDateCell(){ Workbook wb=new HSSFWorkbook(); //Workbook wb=new XSSFWorkbook(); CreationHelper createHelper=wb.getCreationHelper(); Sheet sheet=wb.createSheet("new sheet"); Row row=sheet.createRow(0); //create a row and put a date value in it.The first cell is not styled as a date. Cell cell=row.createCell(0); cell.setCellValue(new Date()); //we style the second cell as a date (and time).It is important to create a new //cell style from the workbook oterwise you can end up modifying the builting in style and effecting not only this cell but other cells //设置日期的格式是分厂重要的 CellStyle cellStyle=wb.createCellStyle(); cellStyle.setDataFormat( createHelper.createDataFormat().getFormat("m/d/yy h:mm") ) ; cell=row.createCell(1); cell.setCellValue(new Date()); cell.setCellStyle(cellStyle); //write the output to a file FileOutputStream fileOut; try { fileOut = new FileOutputStream(str+"\\demo4.xls"); wb.write(fileOut); fileOut.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } //使用不同类型的cell @Test public void useOtherTypeCell(){ Workbook wb=new HSSFWorkbook(); Sheet sheet=wb.createSheet("new sheet"); Row row=sheet.createRow((short)2); row.createCell(0).setCellValue(1.1); row.createCell(1).setCellValue(new Date()); row.createCell(2).setCellValue(Calendar.getInstance()); row.createCell(3).setCellValue("a string"); row.createCell(4).setCellValue(true); row.createCell(5).setCellType(Cell.CELL_TYPE_ERROR); //write the output to a file FileOutputStream fileOut; try { fileOut = new FileOutputStream(str+"\\demo5.xls"); wb.write(fileOut); fileOut.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } //文件VS输入流 @Test public void FileVSStream(){ //打开工作薄时，要么.xsl HSSFWorkbook或.xlsx XSSFWorkbook,可以从一个工作薄 文件 或者一个InputStream，使用一个文件对象允许更低的 //内存消耗，而一个InputStream需要更多的内存缓冲区 //使用WorkbookFactory获取Workbook try { Workbook wb=WorkbookFactory.create(new File(str+"\\MyExcel.xlsx")); } catch (EncryptedDocumentException e) { e.printStackTrace(); } catch (InvalidFormatException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } //使用InputStream获取Workbook对象 try { Workbook wb=WorkbookFactory.create(new FileInputStream(str+"\\MyExcel.xlsx")); } catch (EncryptedDocumentException e) { e.printStackTrace(); } catch (InvalidFormatException e) { e.printStackTrace(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } //如果使用HSSFWorkbook或者XSSFWorkbook直接，通常应该使用NPOIFSFileSystem或OPCPackage 有完全控制的生命周期（包括完成后关闭该文件） try { NPOIFSFileSystem fs=new NPOIFSFileSystem(new File(str+"\\MyExcel.xls")); HSSFWorkbook wb=new HSSFWorkbook(fs.getRoot(),true); //... fs.close(); } catch (IOException e) { e.printStackTrace(); } try { NPOIFSFileSystem fs=new NPOIFSFileSystem(new FileInputStream(str+"\\MyExcel.xls")); HSSFWorkbook wb=new HSSFWorkbook(fs.getRoot(),true); //... fs.close(); } catch (IOException e) { e.printStackTrace(); } //XXSFWorkbook try { OPCPackage pkg=OPCPackage.open(new File(str+"\\MyExcel.xlsx")); XSSFWorkbook wb=new XSSFWorkbook(pkg); //... pkg.close(); } catch (InvalidFormatException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } try { OPCPackage pkg=OPCPackage.open(new FileInputStream(str+"\\MyExcel.xlsx")); XSSFWorkbook wb=new XSSFWorkbook(pkg); //... pkg.close(); } catch (InvalidFormatException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } //演示各种对齐选项 @Test public void alignTest(){ Workbook wb=new XSSFWorkbook(); Sheet sheet=wb.createSheet(); Row row=sheet.createRow((short)2); row.setHeightInPoints(30);//设置行高 createCell(wb,row,(short)0,CellStyle.ALIGN_CENTER,CellStyle.VERTICAL_BOTTOM); createCell(wb,row,(short)1,CellStyle.ALIGN_CENTER_SELECTION,CellStyle.VERTICAL_BOTTOM); createCell(wb,row,(short)2,CellStyle.ALIGN_FILL,CellStyle.VERTICAL_CENTER); createCell(wb,row,(short)3,CellStyle.ALIGN_GENERAL, CellStyle.VERTICAL_CENTER); createCell(wb, row, (short) 4, CellStyle.ALIGN_JUSTIFY, CellStyle.VERTICAL_JUSTIFY); createCell(wb, row, (short) 5, CellStyle.ALIGN_LEFT, CellStyle.VERTICAL_TOP); createCell(wb, row, (short) 6, CellStyle.ALIGN_RIGHT, CellStyle.VERTICAL_TOP); //write the output to a file FileOutputStream fileOut; try { fileOut = new FileOutputStream(str+"\\xssf-align.xlsx"); wb.write(fileOut); fileOut.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } public void createCell(Workbook wb,Row row,short column,short halign,short valign){ Cell cell=row.createCell(column); cell.setCellValue("Align It"); CellStyle cellStyle=wb.createCellStyle(); cellStyle.setAlignment(halign); cellStyle.setVerticalAlignment(valign); cell.setCellStyle(cellStyle); } //使用边界 @Test public void usrBorder(){ Workbook wb=new HSSFWorkbook(); Sheet sheet=wb.createSheet("new sheet"); Row row=sheet.createRow(1); Cell cell=row.createCell(1); cell.setCellValue(4); //style the cell with borders all around CellStyle style=wb.createCellStyle(); style.setBorderBottom(CellStyle.BORDER_THIN); style.setBottomBorderColor(IndexedColors.BLACK.getIndex()); style.setBorderLeft(CellStyle.BORDER_THIN); style.setLeftBorderColor(IndexedColors.GREEN.getIndex()); style.setBorderRight(CellStyle.BORDER_THIN); style.setRightBorderColor(IndexedColors.BLUE.getIndex()); style.setBorderTop(CellStyle.BORDER_MEDIUM_DASHED); style.setTopBorderColor(IndexedColors.BLACK.getIndex()); cell.setCellStyle(style); FileOutputStream fileOut; try { fileOut = new FileOutputStream(str+"\\demo7.xls"); wb.write(fileOut); fileOut.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } @Test public void IteratorRowAndCell(){ //有时候，你想遍历workbook，一个表中的所有行或者所有的cell /* *workbook.sheetIterator(),sheet.rowIterator(),row.cellIterator() ,或者隐式地使用forEach *注意使用迭代器等遍历注意间隔和空缝隙 */ } public void IteratorWhiteCell(Sheet sheet){ int rowStart=Math.min(15,sheet.getFirstRowNum()); int rowEnd=Math.max(1400, sheet.getLastRowNum()); for(int rowNum=rowStart;rowNum<rowEnd;rowNum++){ Row r=sheet.getRow(rowNum); if(r==null){ //这行是空的 continue; } int lastColumn=r.getLastCellNum(); for(int cn=0;cn<lastColumn;cn++){ Cell c=r.getCell(cn, Row.RETURN_BLANK_AS_NULL); if(c==null){ //the spreadsheet is empty in this cell }else{ //Do something useful with the cell's contents } } } } //获取单元格内容 /* *To get the contents of a cell,you first need to know what kind of the cell is(asking a string cell for its numeric will *ge you a NumberFormatException for example) * * 得到单元格内容，你首先需要知道它是什么类型，否则错误的类型可能会出现NumberFormatException */ @Test public void getContent(){ Workbook wb=null; try { wb = new XSSFWorkbook(new File(str+"\\订餐统计.xlsx")); } catch (InvalidFormatException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } Sheet sheet1=wb.getSheetAt(0); for(Row row:sheet1){ for(Cell cell:row){ CellReference cellRef=new CellReference(row.getRowNum(),cell.getColumnIndex()); System.out.print(cellRef.formatAsString()); System.out.println(" - "); switch(cell.getCellType()){ case Cell.CELL_TYPE_STRING: System.out.println(cell.getRichStringCellValue().getString()); break; case Cell.CELL_TYPE_NUMERIC: if(DateUtil.isCellDateFormatted(cell)){ System.out.println(cell.getDateCellValue()); }else{ System.out.println(cell.getNumericCellValue()); } break; case Cell.CELL_TYPE_BOOLEAN: System.out.println(cell.getBooleanCellValue()); break; case Cell.CELL_TYPE_FORMULA: System.out.println(cell.getBooleanCellValue()); break; default: System.out.println(); } } } } //文本提取 //对于大多数文本提取要求 @Test public void getText(){ InputStream inp=null; HSSFWorkbook wb=null; try { inp = new FileInputStream(str+"\\demo.xls"); wb=new HSSFWorkbook(new POIFSFileSystem(inp)); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } ExcelExtractor extractor=new ExcelExtractor(wb); extractor.setFormulasNotResults(true); extractor.setIncludeSheetNames(false); String text=extractor.getText(); System.out.println(text); } //填充和颜色 @Test public void paddingAndColor(){ Workbook wb=new XSSFWorkbook(); Sheet sheet=wb.createSheet("new sheet"); //create a row and put some cells in it.Row are 0 based Row row=sheet.createRow((short)1); //Aqua background aqua:浅绿色 CellStyle style=wb.createCellStyle(); style.setFillBackgroundColor(IndexedColors.AQUA.getIndex()); style.setFillPattern(CellStyle.BIG_SPOTS); Cell cell=row.createCell((short)1); cell.setCellValue("X"); cell.setCellStyle(style); //Orange "foreground",foreground beging the fill foreground not the font color . foreground:前景 style=wb.createCellStyle(); style.setFillForegroundColor(IndexedColors.ORANGE.getIndex()); style.setFillPattern(CellStyle.SOLID_FOREGROUND); cell=row.createCell((short)2); cell.setCellValue("X"); cell.setCellStyle(style); //write to output to a file FileOutputStream fileOut; try { fileOut = new FileOutputStream(str+"\\demo8.xlsx"); wb.write(fileOut); fileOut.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } //合并单元格 @Test public void combineCell(){ Workbook wb=new HSSFWorkbook(); Sheet sheet=wb.createSheet("new sheet"); Row row=sheet.createRow((short)1); Cell cell=row.createCell((short)1); cell.setCellValue("this is a test of merging"); sheet.addMergedRegion(new CellRangeAddress( 1, // firstRow, 全部从0为基数 1, // lastRow, 1,// firstCol, 2// lastCol )); FileOutputStream fileOut; try { fileOut = new FileOutputStream(str+"\\demo9.xls"); wb.write(fileOut); fileOut.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } //设置字体 @Test public void useFont(){ Workbook wb=new HSSFWorkbook(); Sheet sheet=wb.createSheet("new sheet"); Row row=sheet.createRow(1); //create a new font and alert it Font font=wb.createFont(); font.setFontHeight((short)24); font.setFontName("Courier New"); font.setItalic(true); font.setStrikeout(true); CellStyle style=wb.createCellStyle(); style.setFont(font); Cell cell=row.createCell(1); cell.setCellValue("This is a test of fonts"); cell.setCellStyle(style); FileOutputStream fileOut; try { fileOut = new FileOutputStream(str+"\\demo10.xls"); wb.write(fileOut); fileOut.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } //Note ,the maximun number of unique fonts in a workbooks is limited 32767,you should reuse fonts in you applications //instead of creating a font for each cell //在一个workbook中，每一个font是唯一的，好像在32767之内。你应该使用同一个Font然后循环给单元格设置样式而不是在循环中初始化多个font /*//错误的： for(int i=0;i<10000;i++){ row=sheet.createRow(i); cell=row.createCell((short)0); style=wb.createCellStyle(); font=wb.createFont(); font.setBoldweight(Font.BOLDWEIGHT_BOLD); style.setFont(font); cell.setCellStyle(style); } //正确的： style=wb.createCellStyle(); font=wb.createFont(); font.setBoldweight(Font.BOLDWEIGHT_BOLD); style.setFont(font); for(int i=0;i<10000;i++){ row=sheet.createRow(i); cell=row.createCell((short)0); cell.setCellStyle(style); }*/ } //自定义颜色 @Test public void customColor(){ // //HSSF中 // HSSFWorkbook wb=new HSSFWorkbook(); // HSSFSheet sheet=wb.createSheet(); // HSSFRow row=sheet.createRow((short)0); // @SuppressWarnings("deprecation") // HSSFCell cell=row.createCell((short)0); // cell.setCellValue("Default Palette"); // // //apply some colors from the standard palette,as in the previous examples // //we will use red text on a lime background // HSSFCellStyle style=wb.createCellStyle(); // style.setFillForegroundColor(HSSFColor.LIME.index); // style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND); // // HSSFFont font=wb.createFont(); // font.setColor(HSSFColor.RED.index);//字体颜色 // style.setFont(font); // // cell.setCellStyle(style); // // //save with the default palette // try { // FileOutputStream out=new FileOutputStream(str+"\\default_patte.xls"); // wb.write(out); // wb.close(); // } catch (FileNotFoundException e) { // e.printStackTrace(); // } catch (IOException e) { // e.printStackTrace(); // } // // //now let's replace RED and LIMIT in the palette with a more attractive combination // //(lovingly borrowed from freebsd.org) // cell.setCellValue("Modified Palette"); // // //creating a custom palette for the workbook // HSSFPalette palette=wb.getCustomPalette(); // // //replacing the standard red with freebsd.org red // palette.setColorAtIndex(HSSFColor.LIME.index, // (byte) 153,//red, // (byte) 0,//green, // (byte) 0//blue // ); // //replacing lime with freebsd.org gold // palette.setColorAtIndex(HSSFColor.LIME.index, (byte)255, (byte)204, (byte)102); // // //save with the modified palette // //note that wherever we have previously used RED or LIME,the new colors magically appear // try { // FileOutputStream out=new FileOutputStream(str+"\\modified_palette.xls"); // wb.write(out); // out.close(); // } catch (FileNotFoundException e) { // e.printStackTrace(); // } catch (IOException e) { // e.printStackTrace(); // } // //在XSSF中 XSSFWorkbook wb1=new XSSFWorkbook(); XSSFSheet sheet1=wb1.createSheet(); XSSFRow row1=sheet1.createRow(0); XSSFCell cell1=row1.createCell(0); cell1.setCellValue("custom XSSF colors"); XSSFCellStyle style1=wb1.createCellStyle(); style1.setFillForegroundColor(new XSSFColor(new java.awt.Color(128,0,128)));//设置背景颜色 style1.setFillPattern(CellStyle.SOLID_FOREGROUND); cell1.setCellStyle(style1); try { FileOutputStream out=new FileOutputStream(str+"\\modified_palette1.xlsx"); wb1.write(out); out.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } //读和修改 @Test public void readAndRewrite(){ try { InputStream inp=new FileInputStream(str+"\\cs.xlsx"); //InputStream inp=new FileInputStream("workbook.xlsx"); Workbook wb=WorkbookFactory.create(inp); Sheet sheet=wb.getSheetAt(0); Row row=sheet.getRow(2); Cell cell=row.getCell(3); if(cell==null){ cell=row.createCell(3); } cell.setCellType(Cell.CELL_TYPE_STRING); cell.setCellValue("a test"); FileOutputStream fileOut=new FileOutputStream(str+"\\cs.xlsx"); wb.write(fileOut); fileOut.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (EncryptedDocumentException e) { e.printStackTrace(); } catch (InvalidFormatException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } //在单元格内使用文本换行 @Test public void useNewLine(){ Workbook wb=new XSSFWorkbook();//or new HSSFWorkbook(); Sheet sheet=wb.createSheet(); Row row=sheet.createRow(2); Cell cell=row.createCell(2); cell.setCellValue("use \n with word warp on to create a new line"); //to enable newlines you need set a cell styles with warp==true CellStyle cs=wb.createCellStyle(); cs.setWrapText(true); cell.setCellStyle(cs); //increase row height to accomodate two lines of text //设置行高为两个行高 row.setHeightInPoints(2*sheet.getDefaultRowHeightInPoints()); //adjust column width to fit the content sheet.autoSizeColumn((short)2); FileOutputStream fileOut; try { fileOut = new FileOutputStream(str+"\\ooxml-newlines.xlsx"); wb.write(fileOut); fileOut.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } //数据格式 @Test public void formatData(){ Workbook wb=new HSSFWorkbook(); Sheet sheet=wb.createSheet("format sheet"); CellStyle style; DataFormat format=wb.createDataFormat(); Row row; Cell cell; short rowNum=0; short colNum=0; row=sheet.createRow(rowNum++); cell=row.createCell(colNum); cell.setCellValue(11111.25); style=wb.createCellStyle(); style.setDataFormat(format.getFormat("0.0")); cell.setCellStyle(style); row=sheet.createRow(rowNum++); cell=row.createCell(colNum); cell.setCellValue(11111.25); style=wb.createCellStyle(); style.setDataFormat(format.getFormat("#,##0.0000")); cell.setCellStyle(style); FileOutputStream fileOut; try { fileOut = new FileOutputStream(str+"\\demo11.xls"); wb.write(fileOut); fileOut.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } //有道翻译感觉不太准确 //Fix Sheet to One Page @Test public void fixToOnePage(){ Workbook wb=new HSSFWorkbook(); Sheet sheet=wb.createSheet("format sheet"); PrintSetup ps=sheet.getPrintSetup(); sheet.setAutobreaks(true); ps.setFitHeight((short)1); ps.setFitWidth((short)1); //create various cells and rows for spreadsheet Row row=sheet.createRow(1); Cell cell=row.createCell(0); cell.setCellValue("nihao"); FileOutputStream fileOut; try { fileOut = new FileOutputStream(str+"\\demo12.xls"); wb.write(fileOut); fileOut.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } //Set Print Area 设置打印区域 @Test public void setPrintArea(){//其实我感觉不出什么东西来，不过api上有就写一下 Workbook wb=new HSSFWorkbook(); Sheet sheet=wb.createSheet("sheet1"); //sets the print area for the first sheet wb.setPrintArea(0, "$A$1:$C$2"); //Alternatibely wb.setPrintArea( 0,//sheetIndex, 0,//startColumn, 0,//endColumn, 0,//startRow, 0//endRow ); FileOutputStream fileOut; try { fileOut = new FileOutputStream(str+"\\demo13.xls"); wb.write(fileOut); fileOut.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } //Set Page Numbers on Footer @Test public void setFooter(){ Workbook wb=new HSSFWorkbook();//or new XSSFWorkbook(); Sheet sheet=wb.createSheet("format sheet"); Footer footer=sheet.getFooter(); footer.setRight("Page "+HeaderFooter.page()+" of "+HeaderFooter.numPages()); //Create various cells and rows for spreadsheet Row row=sheet.createRow(1); Cell cell=row.createCell(0); cell.setCellValue("haha"); FileOutputStream fileOut; try { fileOut = new FileOutputStream(str+"\\demo14.xls"); wb.write(fileOut); fileOut.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } //使用一些函数 @Test public void useSomeFunction(){ Workbook wb=new HSSFWorkbook();//new XSSFWorkbook(); Sheet sheet1=wb.createSheet("new sheet"); //create a merged region 合并区域 Row row=sheet1.createRow(1); Row row2=sheet1.createRow(2); Cell cell=row.createCell(1); cell.setCellValue("This is a test of merging"); CellRangeAddress region=CellRangeAddress.valueOf("B2:E5"); sheet1.addMergedRegion(region); //Set the border and border colors final short borderMediumDashed=CellStyle.BORDER_MEDIUM_DASHED; RegionUtil.setBorderTop(borderMediumDashed, region, sheet1, wb); RegionUtil.setBorderLeft(borderMediumDashed, region, sheet1, wb); RegionUtil.setBorderBottom(borderMediumDashed, region, sheet1, wb); RegionUtil.setRightBorderColor(borderMediumDashed, region, sheet1, wb); RegionUtil.setBottomBorderColor(IndexedColors.AQUA.getIndex(), region, sheet1, wb); RegionUtil.setTopBorderColor(IndexedColors.AQUA.getIndex(), region, sheet1, wb); RegionUtil.setRightBorderColor(IndexedColors.AQUA.getIndex(), region, sheet1, wb); RegionUtil.setLeftBorderColor(IndexedColors.AQUA.getIndex(), region, sheet1, wb); //shows some usages of HSSFCellUtil CellStyle style=wb.createCellStyle(); style.setIndention((short)4); CellUtil.createCell(row, 8, "this is the value of the cell",style); Cell cell2=CellUtil.createCell(row2, 8, "this is the value of the cell"); CellUtil.setAlignment(cell2,wb,CellStyle.ALIGN_CENTER); //Write out the workbook FileOutputStream fileOut; try { fileOut = new FileOutputStream(str+"\\demo15.xls"); wb.write(fileOut); fileOut.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } //重复的行和列 @Test public void repeatingRowAndCol(){ Workbook wb=new HSSFWorkbook(); Sheet sheet1=wb.createSheet("Sheet1"); Sheet sheet2=wb.createSheet("Sheet2"); //set the rows to repeat from 4 to 5 on the first sheet sheet1.setRepeatingRows(CellRangeAddress.valueOf("4:5")); //set the columns to repeat from column A to C on the secend sheet sheet2.setRepeatingColumns(CellRangeAddress.valueOf("A:C")); FileOutputStream fileOut; try { fileOut = new FileOutputStream(str+"\\demo16.xls"); wb.write(fileOut); fileOut.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } }