利用Java如何实现生成一个表格图片

/**
 * 生成图片
			 * @param cellsValue 以二维数组形式存放 表格里面的值
			 * @param path 文件保存路径
			 */
			public void myGraphicsGeneration(String cellsValue[][], String path) {
				// 字体大小
				int fontTitileSize = 15;
				// 横线的行数
				int totalrow = cellsValue.length+1;
				// 竖线的行数
				int totalcol = 0;
				if (cellsValue[0] != null) {
					totalcol = cellsValue[0].length;
				}
				// 图片宽度
				int imageWidth = 1024;
				// 行高
				int rowheight = 40;
				// 图片高度
				int imageHeight = totalrow*rowheight+50;
				// 起始高度
				int startHeight = 10;
				// 起始宽度
				int startWidth = 10;
				// 单元格宽度
				int colwidth = (int)((imageWidth-20)/totalcol);
				BufferedImage image = new BufferedImage(imageWidth, imageHeight,BufferedImage.TYPE_INT_RGB);
				Graphics graphics = image.getGraphics();
				graphics.setColor(Color.WHITE);
				graphics.fillRect(0,0, imageWidth, imageHeight);
				graphics.setColor(new Color(220,240,240));
				
				//画横线
				for(int j=0;j<totalrow; j++){
					graphics.setColor(Color.black);
					graphics.drawLine(startWidth, startHeight+(j+1)*rowheight, startWidth+colwidth*totalcol, startHeight+(j+1)*rowheight);
				}
				//画竖线
				for(int k=0;k<totalcol+1;k++){
					graphics.setColor(Color.black);
					graphics.drawLine(startWidth+k*colwidth, startHeight+rowheight, startWidth+k*colwidth, startHeight+rowheight*totalrow);
				}
				//设置字体
				Font font = new Font("微软雅黑",Font.BOLD,fontTitileSize);
				graphics.setFont(font);
				//写标题
				String title = "【指标完成进度】";
				graphics.drawString(title, startWidth, startHeight+rowheight-10);
				//写入内容
				for(int n=0;n<cellsValue.length;n++){
						for(int l=0;l<cellsValue[n].length;l++){
							if (n == 0) {
								font = new Font("微软雅黑",Font.BOLD,fontTitileSize);
								graphics.setFont(font);
							}else if (n > 0 && l >0) {
								font = new Font("微软雅黑",Font.PLAIN,fontTitileSize);
								graphics.setFont(font);
								graphics.setColor(Color.RED);
							} else {
								font = new Font("微软雅黑",Font.PLAIN,fontTitileSize);
								graphics.setFont(font);
								graphics.setColor(Color.BLACK);
							}
						graphics.drawString(cellsValue[n][l].toString(), startWidth+colwidth*l+5, startHeight+rowheight*(n+2)-10);
					}
				}
				// 保存图片
				createImage(image, path);
			}
 
/**
			 * 将图片保存到指定位置
			 * @param image 缓冲文件类
			 * @param fileLocation 文件位置
			 */
			public void createImage(BufferedImage image, String fileLocation) {
				try {
					FileOutputStream fos = new FileOutputStream(fileLocation);
					BufferedOutputStream bos = new BufferedOutputStream(fos);
					JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(bos);
					encoder.encode(image);
					bos.close();
					} catch (Exception e) {
					e.printStackTrace();
					}
			}

public static void main(String[] args) {
				DrawTableImg cg = new DrawTableImg();
				try {
					String tableData1[][] = {{"8月31日","累计用户数","目标值","完成进度","时间进度", "进度差异"}, {"掌厅客户端（户）","469281","1500000","31.2%","33.6%", "-2.4%"}};
					String[][] tableData2 = {{"8月31日（户）","新增用户数","日访问量","累计用户数","环比上月"},
					{"合肥和巢湖","469281","1500000","31.2%","33.6%"},
					{"芜湖","469281","1500000","31.2%","33.6%"},
					{"蚌埠","469281","1500000","31.2%","33.6%"},
					{"淮南","469281","1500000","31.2%","33.6%"},
					{"马鞍山","469281","1500000","31.2%","33.6%"},
					{"淮北","469281","1500000","31.2%","33.6%"}};
					cg.myGraphicsGeneration(tableData2, "c:\\myPic.jpg");
				} catch (Exception e) {
					e.printStackTrace();
				}
			}