public class image {
public static void main(String[] args) throws Exception {
createImage("夏文杰", new Font("宋体", Font.BOLD, 30), new File(
"e:/a.png"), 680, 64);
}
// 根据str,font的样式以及输出文件目录
public static void createImage(String str, Font font, File outFile,
Integer width, Integer height) throws Exception {
// 创建图片
BufferedImage image = new BufferedImage(width, height,
BufferedImage.TYPE_INT_BGR);
Graphics g = image.getGraphics();
g.setClip(0, 0, width, height);
g.setColor(Color.WHITE);
g.fillRect(0, 0, width, height);// 先用黑色填充整张图片,也就是背景
g.setColor(Color.red);// 在换成黑色
g.setFont(font);// 设置画笔字体
/** 用于获得垂直居中y */
Rectangle clip = g.getClipBounds();
FontMetrics fm = g.getFontMetrics(font);
int ascent = fm.getAscent();
int descent = fm.getDescent();
int y = (clip.height - (ascent + descent)) / 2 + ascent;
g.drawString(str, 680, y);
g.dispose();
ImageIO.write(image, "png", outFile);// 输出png图片
}
