Excel工具类 POIExcelUtil

package com.xyj.com.tool.util;  
  
import java.io.FileInputStream;  
import java.io.FileNotFoundException;  
import java.io.FileOutputStream;  
import java.io.IOException;  
import java.io.InputStream;  
import java.io.OutputStream;  
import java.util.Calendar;  
import java.util.HashMap;  
import java.util.Map;  
  
import org.apache.commons.io.IOUtils;  
import org.apache.poi.hssf.usermodel.HSSFCell;  
import org.apache.poi.hssf.usermodel.HSSFCellStyle;  
import org.apache.poi.hssf.usermodel.HSSFFont;  
import org.apache.poi.hssf.usermodel.HSSFPalette;  
import org.apache.poi.hssf.usermodel.HSSFRow;  
import org.apache.poi.hssf.usermodel.HSSFSheet;  
import org.apache.poi.hssf.usermodel.HSSFWorkbook;  
import org.apache.poi.hssf.util.HSSFColor;  
import org.apache.poi.ss.extractor.ExcelExtractor;  
import org.apache.poi.ss.usermodel.Cell;  
import org.apache.poi.ss.usermodel.CellStyle;  
import org.apache.poi.ss.usermodel.ClientAnchor;  
import org.apache.poi.ss.usermodel.CreationHelper;  
import org.apache.poi.ss.usermodel.DateUtil;  
import org.apache.poi.ss.usermodel.Drawing;  
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.Picture;  
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.xssf.extractor.XSSFExcelExtractor;  
import org.apache.poi.xssf.usermodel.XSSFCellStyle;  
import org.apache.poi.xssf.usermodel.XSSFColor;  
import org.apache.poi.xssf.usermodel.XSSFWorkbook;  
  
public class POIExcelUtil {  
  
    // ------------------------写Excel-----------------------------------  
    /** 
     * 创建workBook对象 xlsx(2007以上版本) 
     *  
     * @return 
     */  
    public static Workbook createWorkbook() {  
        return createWorkbook(true);  
    }  
  
    /** 
     * 创建WorkBook对象 
     *  
     * @param flag 
     *            true:xlsx(1997-2007) false:xls(2007以上) 
     * @return 
     */  
    public static Workbook createWorkbook(boolean flag) {  
        Workbook wb;  
        if (flag) {  
            wb = new XSSFWorkbook();  
        } else {  
            wb = new HSSFWorkbook();  
        }  
        return wb;  
    }  
  
    /** 
     * 添加图片 
     *  
     * @param wb 
     *            workBook对象 
     * @param sheet 
     *            sheet对象 
     * @param picFileName 
     *            图片文件名称（全路径） 
     * @param picType 
     *            图片类型 
     * @param row 
     *            图片所在的行 
     * @param col 
     *            图片所在的列 
     */  
    public static void addPicture(Workbook wb, Sheet sheet, String picFileName,  
            int picType, int row, int col) {  
        InputStream is = null;  
        try {  
            // 读取图片  
            is = new FileInputStream(picFileName);  
            byte[] bytes = IOUtils.toByteArray(is);  
            int pictureIdx = wb.addPicture(bytes, picType);  
            is.close();  
            // 写图片  
            CreationHelper helper = wb.getCreationHelper();  
            Drawing drawing = sheet.createDrawingPatriarch();  
            ClientAnchor anchor = helper.createClientAnchor();  
            // 设置图片的位置  
            anchor.setCol1(col);  
            anchor.setRow1(row);  
            Picture pict = drawing.createPicture(anchor, pictureIdx);  
  
            pict.resize();  
        } catch (Exception e) {  
            try {  
                if (is != null) {  
                    is.close();  
                }  
            } catch (IOException e1) {  
                e1.printStackTrace();  
            }  
            e.printStackTrace();  
        }  
    }  
  
    /** 
     * 创建Cell 默认为水平和垂直方式都是居中 
     *  
     * @param style 
     *            CellStyle对象 
     * @param row 
     *            Row对象 
     * @param column 
     *            单元格所在的列 
     * @return 
     */  
    public static Cell createCell(CellStyle style, Row row, short column) {  
        return createCell(style, row,  column,  
                XSSFCellStyle.ALIGN_CENTER, XSSFCellStyle.ALIGN_CENTER);  
    }  
  
    /** 
     * 创建Cell并设置水平和垂直方式 
     *  
     * @param style 
     *            CellStyle对象 
     * @param row 
     *            Row对象 
     * @param column 
     *            单元格所在的列 
     * @param halign 
     *            水平对齐方式：XSSFCellStyle.VERTICAL_CENTER. 
     * @param valign 
     *            垂直对齐方式：XSSFCellStyle.ALIGN_LEFT 
     */  
    public static Cell createCell(CellStyle style, Row row,   
            short column, short halign, short valign) {  
        Cell cell = row.createCell(column);  
        setAlign(style,halign,valign);  
        cell.setCellStyle(style);  
        return cell;  
    }  
      
    /** 
     * 合并单元格 
     * @param sheet 
     * @param firstRow 开始行 
     * @param lastRow 最后行 
     * @param firstCol 开始列 
     * @param lastCol 最后列 
     */  
    public static void mergeCell(Sheet sheet,int firstRow,int lastRow,int firstCol,int lastCol){  
         sheet.addMergedRegion(new CellRangeAddress(firstRow,lastRow,firstCol,lastCol));  
    }  
      
    //---------------------------------设置样式-----------------------  
      
    /** 
     * 设置单元格对齐方式 
     * @param style 
     * @param halign 
     * @param valign 
     * @return 
     */  
    public static CellStyle setAlign(CellStyle style,short halign, short valign) {  
        style.setAlignment(halign);  
        style.setVerticalAlignment(valign);  
        return style;  
    }  
      
    /** 
     * 设置单元格边框(四个方向的颜色一样) 
     * @param style style对象 
     * @param borderStyle 边框类型 ：dished-虚线 thick-加粗 double-双重 dotted-有点的 CellStyle.BORDER_THICK 
     * @param borderColor 颜色 IndexedColors.GREEN.getIndex() 
     * @return 
     */  
    public static CellStyle setBorder(CellStyle style,short borderStyle,short borderColor){  
          
        //设置底部格式（样式+颜色）  
        style.setBorderBottom(borderStyle);  
        style.setBottomBorderColor(borderColor);  
        //设置左边格式  
        style.setBorderLeft(borderStyle);  
        style.setLeftBorderColor(borderColor);  
        //设置右边格式  
        style.setBorderRight(borderStyle);  
        style.setRightBorderColor(borderColor);  
        //设置顶部格式  
        style.setBorderTop(borderStyle);  
        style.setTopBorderColor(borderColor);  
          
        return style;  
    }  
      
      
    /** 
     * 自定义颜色（xssf) 
     * @param style  xssfStyle 
     * @param red RGB red (0-255) 
     * @param green RGB green (0-255) 
     * @param blue RGB blue (0-255) 
     */  
    public static CellStyle setBackColorByCustom(XSSFCellStyle style,int red ,int green,int blue){         
            //设置前端颜色  
            style.setFillForegroundColor(new XSSFColor(new java.awt.Color(red, green, blue)));  
            //设置填充模式  
            style.setFillPattern(CellStyle.SOLID_FOREGROUND);  
              
            return style;  
    }  
    /** 
     * 设置前景颜色 
     * @param style style对象 
     * @param color ：IndexedColors.YELLOW.getIndex() 
     * @return 
     */  
    public static CellStyle setBackColor(CellStyle style,short color){  
  
       //设置前端颜色  
        style.setFillForegroundColor(color);  
        //设置填充模式  
        style.setFillPattern(CellStyle.SOLID_FOREGROUND);  
  
        return style;  
    }  
      
      
      
    /** 
     * 设置背景颜色 
     * @param style style对象 
     * @param color ：IndexedColors.YELLOW.getIndex() 
     * @param fillPattern ：CellStyle.SPARSE_DOTS 
     * @return 
     */  
    public static CellStyle setBackColor(CellStyle style,short backColor,short fillPattern){  
  
        //设置背景颜色  
        style.setFillBackgroundColor(backColor);  
         
        //设置填充模式  
        style.setFillPattern(fillPattern);  
          
        return style;  
    }  
      
    /** 
     *  
     * 设置字体（简单的需求实现，如果复杂的字体，需要自己去实现）尽量重用 
     * @param style style对象 
     * @param fontSize 字体大小 shot(24) 
     * @param color 字体颜色  IndexedColors.YELLOW.getIndex() 
     * @param fontName 字体名称 "Courier New" 
     * @param  
     */  
    public static CellStyle setFont(Font font, CellStyle style,short fontSize,short color,String fontName){  
            font.setFontHeightInPoints(color);  
            font.setFontName(fontName);  
              
            //font.setItalic(true);// 斜体  
            //font.setStrikeout(true);//加干扰线  
              
            font.setColor(color);//设置颜色  
            // Fonts are set into a style so create a new one to use.  
            style.setFont(font);  
                          
            return style;  
  
    }  
  
  
    /** 
     *  
     * @param createHelper 
     *            createHelper对象 
     * @param style 
     *            CellStyle对象 
     * @param formartData 
     *            date:"m/d/yy h:mm"; int:"#,###.0000" ,"0.0" 
     */  
    public static CellStyle setDataFormat(CreationHelper createHelper, CellStyle style, String formartData) {  
          
        style.setDataFormat(createHelper.createDataFormat().getFormat(  
                formartData));  
      
        return style;  
    }  
  
    /** 
     * 将Workbook写入文件 
     *  
     * @param wb 
     *            workbook对象 
     * @param fileName 
     *            文件的全路径 
     * @return 
     */  
    public static boolean createExcel(Workbook wb, String fileName) {  
        boolean flag = true;  
        FileOutputStream fileOut = null;  
        try {  
            fileOut = new FileOutputStream(fileName);  
            wb.write(fileOut);  
            fileOut.close();  
  
        } catch (Exception e) {  
            flag = false;  
            if (fileOut != null) {  
                try {  
                    fileOut.close();  
                } catch (IOException e1) {  
                    // TODO Auto-generated catch block  
                    e1.printStackTrace();  
                }  
            }  
            e.printStackTrace();  
        }  
        return flag;  
    }  
      
  
    //--------------------读取Excel-----------------------  
    /** 
     * 读取Excel 
     * @param filePathName 
     * @return 
     */  
    public  static Workbook readExcel(String filePathName){  
        InputStream inp = null;  
        Workbook wb=null;  
         try {  
            inp = new FileInputStream(filePathName);  
            wb = WorkbookFactory.create(inp);  
            inp.close();  
             
        } catch (Exception e) {  
            try {  
                if(null!=inp){  
                    inp.close();  
                }  
            } catch (IOException e1) {  
                // TODO Auto-generated catch block  
                e1.printStackTrace();  
            }  
            e.printStackTrace();  
        }  
         return wb;  
    }  
      
  
      
    /** 
     * 读取Cell的值 
     * @param sheet 
     * @return 
     */  
    public static Map readCell(Sheet sheet){  
        Map map=new HashMap();  
        //遍历所有行  
         for (Row row : sheet) {     
                //便利所有列  
                for (Cell cell : row) {   
                    //获取单元格的类型  
                    CellReference cellRef = new CellReference(row.getRowNum(), cell     
                            .getColumnIndex());     
                 //   System.out.print(cellRef.formatAsString());     
                    String key=cellRef.formatAsString();  
                 //   System.out.print(" - ");     
        
                    switch (cell.getCellType()) {    
                    //字符串  
                    case Cell.CELL_TYPE_STRING:     
                         map.put(key, cell.getRichStringCellValue()     
                                      .getString());      
                      //  System.out.println(cell.getRichStringCellValue()     
                          //         .getString());     
                        break;  
                    //数字  
                    case Cell.CELL_TYPE_NUMERIC:     
                        if (DateUtil.isCellDateFormatted(cell)) {     
                          //  System.out.println(cell.getDateCellValue());   
                            map.put(key, cell.getDateCellValue());  
                        } else {     
                          //  System.out.println(cell.getNumericCellValue());    
                            map.put(key, cell.getNumericCellValue());  
                        }     
                        break;     
                    //boolean  
                    case Cell.CELL_TYPE_BOOLEAN:     
                       // System.out.println(cell.getBooleanCellValue());     
                        map.put(key, cell.getBooleanCellValue());  
                        break;    
                    //方程式  
                    case Cell.CELL_TYPE_FORMULA:     
                      // System.out.println(cell.getCellFormula());  
                        map.put(key, cell.getCellFormula());  
                        break;     
                    //空值  
                    default:     
                        System.out.println();    
                        map.put(key,"");  
                    }    
                     
                }   
         }  
         return map;  
          
    }  
    /** 
     * @param args 
     * @throws Exception 
     */  
    public static void main(String[] args) throws Exception {  
          
//      在需要换行的地方加上\n   cell.setCellValue("Use \n with word wrap on to create a new line");  
//      设置行高 row.setHeightInPoints((2*sheet.getDefaultRowHeightInPoints()));  
//      设置列只适应宽度 sheet.autoSizeColumn((short)2);  
          
//        
//      // -------------插入---------------------  
//      Workbook wb = POIUtil.createWorkbook();  
//      //创建Sheet  
//      Sheet s = wb.createSheet();  
//      s.autoSizeColumn(1);  
//      s.autoSizeColumn(0);  
//      s.autoSizeColumn(2);  
//      //创建样式（真实项目中-所有样式都写在这里）  
//      CellStyle style1=wb.createCellStyle();  
//      CellStyle style2=wb.createCellStyle();  
//      CellStyle style3=wb.createCellStyle();  
//      //字体  
//      //设置字体  
//      Font font=wb.createFont();  
//      CellStyle fontStyle =setFont(font,style3,(short)30,IndexedColors.RED.getIndex() , "Courier New");  
//      //合并单元格  
//      //mergeCell(s,2,2,1,2);  
//      //创建行  
//      Row row1 = s.createRow(0);  
//      row1.setHeightInPoints((2*s.getDefaultRowHeightInPoints()));  
//      //-----------数字-----------  
//      Cell c1=createCell(style1, row1, (short) 0);  
//      c1.setCellValue(3.138);  
//      //设置边框  
//      setBorder(style1,CellStyle.BORDER_THIN,IndexedColors.GREEN.getIndex());  
//    
//    
//      //-------------日期----------------  
//      Cell c2=createCell(style2, row1, (short) 1);  
//      c2.setCellValue(Calendar.getInstance());  
//      CreationHelper ch=wb.getCreationHelper();  
//      setDataFormat(ch,style2,"m/d/yy h:mm");  
//      setBackColor(style2,IndexedColors.YELLOW.getIndex());  
//  
//        
//        
//      Cell c4=createCell(style2, row1, (short) 2);  
//        
//      //----------------字符串------------------  
//        
//      //Cell c3=createCell(style3, row1, (short) 2);  
//      Cell c3=row1.createCell((short) 3);  
//      c3.setCellValue("我和你dfgd、\nfged二个如果");  
//      CellStyle cs=wb.createCellStyle();  
//        
//      setBackColor(style3,IndexedColors.ORANGE.getIndex());     
//    
//        
//      c3.setCellStyle(style3);  
        //c3.setCellStyle(cs);  
        //写入图片  
        // POIUtil.addPicture(wb, s,"F://aa.gif", Workbook.PICTURE_TYPE_JPEG,5,6);  
  
//       Footer footer = s.getFooter();   //页脚  
//          
//      footer.setRight( "Page " + footer.getLeft() + " of " + footer.getRight());   
           
//      s.shiftRows(5, 10,-5); //把第6-11行向上移动5行     
//      s.setSelected(true);  //选中sheet  
//        
         //打印  
//      PrintSetup ps = s.getPrintSetup();     
//          
//      sheet.setAutobreaks(true);     
//      
//      ps.setFitHeight((short)1);     
//      ps.setFitWidth((short)1);   
          
//      POIUtil.createExcel(wb, "F://text.xlsx");  
          
        //=====================读================  
        Workbook wb=readExcel("F://text.xlsx");  
        Map map=readCell(wb.getSheetAt(0));  
        for(String key:map.keySet()){  
            System.out.println(key+"-"+map.get(key));  
        }  
          
  
    }  
  
}