实例:
public class POITest1 {
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2");
//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=POITest1.class.getResource("gg1.gif");
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("我的第二个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;
}
}
}
poi的jar包下载: