使用JAVA生成图片

import java.awt.*;
import java.awt.image.*;
import java.io.*;
import javax.imageio.*;
import java.awt.font.*;
import java.awt.geom.*;

public class CreateImage
{
    public
    static void main(String[] args) throws Exception
     {
        int width =
    100;
        int height =
    100;
         String s = "你好";

         File file = new File("c:/image.jpg");

         Font font = new Font("Serif", Font.BOLD, 10);
         BufferedImage bi = new BufferedImage(width, height,
    BufferedImage.TYPE_INT_RGB);
         Graphics2D g2 = (Graphics2D)bi.getGraphics();
         g2.setBackground(Color.WHITE);
         g2.clearRect(0, 0, width,
    height);
         g2.setPaint(Color.RED);

         FontRenderContext context = g2.getFontRenderContext();
         Rectangle2D bounds = font.getStringBounds(s,
    context);
        double x = (width -
    bounds.getWidth()) / 2;
        double y =
    (height - bounds.getHeight()) / 2;
        double ascent =
    -bounds.getY();
        double baseY
    = y + ascent;

         g2.drawString(s, (int)x, (int)baseY);

         ImageIO.write(bi, "jpg", file);
     }
}