Apache poi操作excel,可不可以在每个Cell插入一张图片

Question

如题

Answer 1

/*
 * Test3.java
 *
 * Created on 2007年9月13日, 上午9:14
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */package test1;import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.FileOutputStream;
import java.net.URL;
import javax.imageio.ImageIO;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFClientAnchor;
import org.apache.poi.hssf.usermodel.HSSFFont;
import org.apache.poi.hssf.usermodel.HSSFPatriarch;
import org.apache.poi.hssf.usermodel.HSSFRichTextString;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFSimpleShape;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.util.HSSFColor;/**
 *
 * @author hadeslee
 */
public class Test3 {
    
    /** Creates a new instance of Test3 */
    public Test3() {
    }
    public static void main(String[] args)throws Exception {
        //声明一个工作薄
        HSSFWorkbook wb=new HSSFWorkbook();
        //生成一个表格
        HSSFSheet sheet=wb.createSheet("表格1");
        //生成一个列
        HSSFRow row=sheet.createRow(0);
        //生成一个样式
        HSSFCellStyle style=wb.createCellStyle();
        //设置这些样式
        style.setFillForegroundColor(HSSFColor.SKY_BLUE.index);
        style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
        style.setBorderBottom(HSSFCellStyle.BORDER_THIN);
        style.setBorderLeft(HSSFCellStyle.BORDER_THIN);
        style.setBorderRight(HSSFCellStyle.BORDER_THIN);
        style.setBorderTop(HSSFCellStyle.BORDER_THIN);
        style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
        //生成一个字体
        HSSFFont font=wb.createFont();
        font.setColor(HSSFColor.VIOLET.index);
        font.setFontHeightInPoints((short)16);
        font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
        //把字体应用到当前的样式
        style.setFont(font);
        //声明一个画图的顶级管理器
        HSSFPatriarch patriarch = sheet.createDrawingPatriarch();
        //填充单元格
        for(short i=0;i<5;i++){
            //声明一个单元格
            HSSFCell cell=row.createCell(i);
            switch(i){
                case 0:
                    //设置普通文本
                    cell.setCellValue(new HSSFRichTextString("普通文本"));
                    break;
                case 1:
                    //设置为形状
                    HSSFClientAnchor a1 = new HSSFClientAnchor( 0, 0, 1023, 255, (short) 1, 0, (short) 1, 0 );
                    HSSFSimpleShape shape1 = patriarch.createSimpleShape(a1);
                    //这里可以设置形状的样式
                    shape1.setShapeType(HSSFSimpleShape.OBJECT_TYPE_OVAL);
                    
                    break;
                case 2:
                    //设置为布尔量
                    cell.setCellValue(true);
                    break;
                case 3:
                    //设置为double值
                    cell.setCellValue(12.5);
                    break;
                case 4:
                    //设置为图片]
                    URL url=Test3.class.getResource("hello.jpg");
                    insertImage(wb,patriarch,getImageData(ImageIO.read(url)),0,4,1);
                    break;
                    
            }
            
            //设置单元格的样式
            cell.setCellStyle(style);
        }
        FileOutputStream fout=new FileOutputStream("我的第一个EXCEL.xls");
        //输出到文件
        wb.write(fout);
        fout.close();
    }
    //自定义的方法,插入某个图片到指定索引的位置
    private static void insertImage(HSSFWorkbook wb,HSSFPatriarch pa,byte[] data,int row,int column,int index){
        int x1=index*250;
        int y1=0;
        int x2=x1+255;
        int y2=255;
        HSSFClientAnchor anchor = new HSSFClientAnchor(x1,y1,x2,y2,(short)column,row,(short)column,row);
        anchor.setAnchorType(2);
        pa.createPicture(anchor , wb.addPicture(data,HSSFWorkbook.PICTURE_TYPE_JPEG));
    }
    //从图片里面得到字节数组
    private static  byte[] getImageData(BufferedImage bi){
        try{
            ByteArrayOutputStream bout=new ByteArrayOutputStream();
            ImageIO.write(bi,"PNG",bout);
            return bout.toByteArray();
        }catch(Exception exe){
            exe.printStackTrace();
            return null;
        }
    }
}