jexcel使用

package excel.jxl;

import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.Date;

import jxl.Cell;
import jxl.CellType;
import jxl.Sheet;
import jxl.Workbook;
import jxl.WorkbookSettings;
import jxl.format.Alignment;
import jxl.format.Border;
import jxl.format.BorderLineStyle;
import jxl.format.Colour;
import jxl.format.VerticalAlignment;
import jxl.write.Formula;
import jxl.write.Label;
import jxl.write.NumberFormat;
import jxl.write.WritableCellFeatures;
import jxl.write.WritableCellFormat;
import jxl.write.WritableFont;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;
import jxl.write.WriteException;

public class JExcelUtils {

	/**
	 * 生成Excel文件
	 * @param path         文件路径
	 * @param sheetName    工作表名称
	 * @param dataTitles   数据标题
	 */
   public void createExcelFile(String path,String sheetName,String[] dataTitles){
	   WritableWorkbook workbook;
	   try{
		   OutputStream os=new FileOutputStream(path); 
		   workbook=Workbook.createWorkbook(os); 

		   WritableSheet sheet = workbook.createSheet(sheetName, 0); //添加第一个工作表
		   initialSheetSetting(sheet);
		   
		   Label label;
		   for (int i=0; i<dataTitles.length; i++){
			   //Label(列号,行号,内容,风格)
			   label = new Label(i, 0, dataTitles[i],getTitleCellFormat()); 
			   sheet.addCell(label); 
		   }

		   //插入一行
		   insertRowData(sheet,1,new String[]{"200201001","张三","100","60","100","260"},getDataCellFormat(CellType.STRING_FORMULA));
		   
		   //一个一个插入行
		   label = new Label(0, 2,"200201002",getDataCellFormat(CellType.STRING_FORMULA)); 
		   sheet.addCell(label);
		   
		   label = new Label(1, 2,"李四",getDataCellFormat(CellType.STRING_FORMULA)); 
		   sheet.addCell(label);
		   
		   insertOneCellData(sheet,2,2,70.5,getDataCellFormat(CellType.NUMBER));
		   insertOneCellData(sheet,3,2,90.523,getDataCellFormat(CellType.NUMBER));
		   insertOneCellData(sheet,4,2,60.5,getDataCellFormat(CellType.NUMBER));

		   insertFormula(sheet,5,2,"C3+D3+E3",getDataCellFormat(CellType.NUMBER_FORMULA));
		   
		   //插入日期
		   mergeCellsAndInsertData(sheet, 0, 3, 5, 3, new Date(), getDataCellFormat(CellType.DATE));
		   
		   workbook.write(); 
		   workbook.close();
	   }catch(Exception e){
		   e.printStackTrace();
	   }
   }
   
   /**
    * 初始化表格属性
    * @param sheet
    */
   public void initialSheetSetting(WritableSheet sheet){
	  try{
		   //sheet.getSettings().setProtected(true); //设置xls的保护，单元格为只读的
		   sheet.getSettings().setDefaultColumnWidth(10); //设置列的默认宽度
		   //sheet.setRowView(2,false);//行高自动扩展 
		   //setRowView(int row, int height);--行高 
		   //setColumnView(int  col,int width); --列宽
		   sheet.setColumnView(0,20);//设置第一列宽度
	  }catch(Exception e){
		  e.printStackTrace();
	  }
   }
   
   /**
    * 插入公式
    * @param sheet
    * @param col
    * @param row
    * @param formula
    * @param format
    */
   public void insertFormula(WritableSheet sheet,Integer col,Integer row,String formula,WritableCellFormat format){
	   try{
		   Formula f = new Formula(col, row, formula, format);
		   sheet.addCell(f);
	   }catch(Exception e){
		   e.printStackTrace();
	   }
   }
   
   /**
    * 插入一行数据
    * @param sheet       工作表
    * @param row         行号
    * @param content     内容
    * @param format      风格
    */
   public void insertRowData(WritableSheet sheet,Integer row,String[] dataArr,WritableCellFormat format){
	   try{
		   Label label;
		   for(int i=0;i<dataArr.length;i++){
			   label = new Label(i,row,dataArr[i],format);
			   sheet.addCell(label);
		   }
	   }catch(Exception e){
		   e.printStackTrace();
	   }
   }
   
   /**
    * 插入单元格数据
    * @param sheet
    * @param col
    * @param row
    * @param data
    */
   public void insertOneCellData(WritableSheet sheet,Integer col,Integer row,Object data,WritableCellFormat format){
	   try{
		   if(data instanceof Double){
			   jxl.write.Number  labelNF = new jxl.write.Number(col,row,(Double)data,format); 
			   sheet.addCell(labelNF); 
		   }else if(data instanceof Boolean){
			   jxl.write.Boolean labelB = new jxl.write.Boolean(col,row,(Boolean)data,format); 
			   sheet.addCell(labelB); 
		   }else if(data instanceof Date){
			   jxl.write.DateTime labelDT = new jxl.write.DateTime(col,row,(Date)data,format); 
			   sheet.addCell(labelDT); 
			   setCellComments(labelDT, "这是个创建表的日期说明！");
		   }else{
			   Label label = new Label(col,row,data.toString(),format);
			   sheet.addCell(label);			   
		   }
	   }catch(Exception e){
		   e.printStackTrace();
	   }

  }
   
   /**
    * 合并单元格，并插入数据
    * @param sheet
    * @param col_start
    * @param row_start
    * @param col_end
    * @param row_end
    * @param data
    * @param format
    */
   public void mergeCellsAndInsertData(WritableSheet sheet,Integer col_start,Integer row_start,Integer col_end,Integer row_end,Object data, WritableCellFormat format){
	  try{
		  sheet.mergeCells(col_start,row_start,col_end,row_end);//左上角到右下角
		  insertOneCellData(sheet, col_start, row_start, data, format);
	  }catch(Exception e){
		  e.printStackTrace();
	  }

   }
   
   /**
    * 给单元格加注释
    * @param label
    * @param comments
    */
   public void setCellComments(Object label,String comments){
	   WritableCellFeatures cellFeatures = new WritableCellFeatures();
	   cellFeatures.setComment(comments);
	   if(label instanceof jxl.write.Number){
		   jxl.write.Number num = (jxl.write.Number)label;
		   num.setCellFeatures(cellFeatures);
	   }else if(label instanceof jxl.write.Boolean){
		   jxl.write.Boolean bool = (jxl.write.Boolean)label;
		   bool.setCellFeatures(cellFeatures);
	   }else if(label instanceof jxl.write.DateTime){
		   jxl.write.DateTime dt = (jxl.write.DateTime)label;
		   dt.setCellFeatures(cellFeatures);
	   }else{
		   Label _label = (Label)label;
		   _label.setCellFeatures(cellFeatures);
	   }
   }
   
   /**
   * 读取excel
   * @param inputFile
   * @param inputFileSheetIndex
   * @throws Exception
   */
   public ArrayList<String> readDataFromExcel(File inputFile, int inputFileSheetIndex){
      ArrayList<String> list = new ArrayList<String>();
      Workbook book = null;
      Cell cell = null;
      WorkbookSettings setting = new WorkbookSettings(); 
      java.util.Locale locale = new java.util.Locale("zh","CN"); 
      setting.setLocale(locale);
      setting.setEncoding("ISO-8859-1");
      try{
    	  book = Workbook.getWorkbook(inputFile, setting);
      }catch(Exception e){
    	  e.printStackTrace();  
      }

      Sheet sheet = book.getSheet(inputFileSheetIndex);
      for (int rowIndex = 0; rowIndex < sheet.getRows(); rowIndex++) {//行
       for (int colIndex = 0; colIndex < sheet.getColumns(); colIndex++) {//列
           cell = sheet.getCell(colIndex, rowIndex);
           //System.out.println(cell.getContents());
           list.add(cell.getContents());
       }
      }
      book.close();

      return list;
   }

   /**
    * 得到数据表头格式
    * @return
    */
   public WritableCellFormat getTitleCellFormat(){
	   WritableCellFormat wcf = null;
	   try {
		   //字体样式
		   WritableFont wf = new WritableFont(WritableFont.TIMES,12, WritableFont.NO_BOLD,false);//最后一个为是否italic
		   wf.setColour(Colour.RED);
		   wcf = new WritableCellFormat(wf);
		   //对齐方式
		   wcf.setAlignment(Alignment.CENTRE);
     	   wcf.setVerticalAlignment(VerticalAlignment.CENTRE);
     	   //边框
		   wcf.setBorder(Border.ALL,BorderLineStyle.THIN);
		   
		   //背景色
		   wcf.setBackground(Colour.GREY_25_PERCENT);
	   } catch (WriteException e) {
		e.printStackTrace();
	   }
	   return wcf;
   }
   
   /**
    * 得到数据格式
    * @return
    */
   public WritableCellFormat getDataCellFormat(CellType type){
	   WritableCellFormat wcf = null;
	   try {
		   //字体样式
		   if(type == CellType.NUMBER || type == CellType.NUMBER_FORMULA){//数字
			  NumberFormat nf = new NumberFormat("#.00");
			  wcf = new WritableCellFormat(nf); 
		   }else if(type == CellType.DATE || type == CellType.DATE_FORMULA){//日期
			   jxl.write.DateFormat df = new jxl.write.DateFormat("yyyy-MM-dd hh:mm:ss"); 
			   wcf = new jxl.write.WritableCellFormat(df); 
		   }else{
			   WritableFont wf = new WritableFont(WritableFont.TIMES,10, WritableFont.NO_BOLD,false);//最后一个为是否italic
			   wcf = new WritableCellFormat(wf);
		   }
		   //对齐方式
		   wcf.setAlignment(Alignment.CENTRE);
     	   wcf.setVerticalAlignment(VerticalAlignment.CENTRE);
     	   //边框
		   wcf.setBorder(Border.LEFT,BorderLineStyle.THIN);
		   wcf.setBorder(Border.BOTTOM,BorderLineStyle.THIN);
		   wcf.setBorder(Border.RIGHT,BorderLineStyle.THIN);
		   //背景色
		   wcf.setBackground(Colour.WHITE);
		   
		   wcf.setWrap(true);//自动换行
		   
	   } catch (WriteException e) {
		e.printStackTrace();
	   }
	   return wcf;
   }
   
   /**
    * 打开文件看看
    * @param exePath
    * @param filePath
    */
   public void openExcel(String exePath,String filePath){
	   Runtime r=Runtime.getRuntime(); 
	   String cmd[]={exePath,filePath}; 
	   try{ 
		   r.exec(cmd); 
	   }catch(Exception e){
		   e.printStackTrace();
	   }
   }
   
   public static void main(String[] args){
	   String[] titles = {"学号","姓名","语文","数学","英语","总分"}; 
	   JExcelUtils jxl = new JExcelUtils();
	   String filePath = "E:/test.xls";
	   jxl.createExcelFile(filePath,"成绩单",titles);
	   jxl.readDataFromExcel(new File(filePath),0);
	   jxl.openExcel("C:/Program Files/Microsoft Office/OFFICE11/EXCEL.EXE",filePath);
   }
}