/**
* 生成图片
*
* @return
* @throws Exception
*/
public static String graphicsGeneration() throws Exception {
// 实际数据行数+标题+备注
int imageWidth = 490;
int imageHeight = 130;
BufferedImage image = new BufferedImage(imageWidth, imageHeight,BufferedImage.TYPE_INT_RGB);
Graphics2D g2d = (Graphics2D) image.getGraphics();
g2d.setColor(Color.WHITE);
g2d.fillRect(0, 0, imageWidth, imageHeight);
// ---------- 增加下面的代码使得背景透明 -----------------
// image =
// g2d.getDeviceConfiguration().createCompatibleImage(imageWidth,
// imageHeight, Transparency.TRANSLUCENT);
// g2d.dispose();
// g2d = image.createGraphics();
// ---------- 背景透明代码结束 -----------------
g2d.setColor(new Color(220, 240, 240));
g2d.setStroke(new BasicStroke(3.0f));
// 画横线
g2d.setColor(Color.red);
g2d.drawLine(10, 10, imageWidth - 10, 10);
g2d.drawLine(10, imageHeight - 10, imageWidth - 10, imageHeight - 10);
// 画竖线
g2d.setColor(Color.red);
g2d.drawLine(10, 10, 10, imageHeight - 10);
g2d.drawLine(imageWidth - 10, 10, imageWidth - 10, imageHeight - 10);
// 设置字体
Font font = new Font("华文楷体", Font.BOLD, 25);
g2d.setFont(font);
// 写入内容
g2d.setColor(Color.black);
font = new Font("华文楷体", Font.BOLD, 25);
g2d.setFont(font);
g2d.drawString("人员:李某某", 12, 45);
g2d.drawString("部门:综合业务处", 12, 100);
g2d.drawString("下载次数:3次", 270, 45);
g2d.drawString("时间:2018-10-15", 270, 100);
String path = "C:/1.jpg";
ImageIO.write(image, "jpg", new File(path));
return path;
}