代码很简单，没有什么新意！就是利用JDK做的简单绘图和变换！

package com.oracle.day16;import java.awt.Color;import java.awt.Font;import java.awt.Graphics2D;import java.awt.RenderingHints;import java.awt.font.FontRenderContext;import java.awt.geom.Rectangle2D;import java.awt.p_w_picpath.BufferedImage;import java.io.File;import java.io.IOException;import javax.p_w_picpathio.ImageIO;/** * *@author huyongjian Oracle(Compus Solution Group) * @Date  2013-8-16 * @version 2.0 * @since JDK1.6（建议）   Copy Right Information    COMPUS SOLUTION GROUP   IDE:Eclipse   class:   打印生成jpg图片生成文字水印      JDK2D02 */public class TestJdk2D02 {    public String create(String str,String filePath,            int width,int height){        String fileName=System.currentTimeMillis()+".jpg";        String path=filePath+"/"+fileName;        File file=new File(path);        BufferedImage bi=new BufferedImage(width,height,                BufferedImage.TYPE_INT_RGB);        Graphics2D g2=(Graphics2D) bi.getGraphics();        g2.setColor.WHITE);         g2.clearRect(0, 0, width, height);        Font font=new Font("黑体",Font.BOLD,25);        g2.setFont(font);        g2.setPaint(Color.RED);        FontRenderContext context=g2.getFontRenderContext();        Rectangle2D bounds=font.getStringBounds(str, context);        double x=(width-bounds.getWidth())/2;        double y=(height-bounds.getHeight())/2;        double ascent=-bounds.getY();        double baseY=y+ascent;                                              g2.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,                RenderingHints.VALUE_TEXT_ANTIALIAS_ON);        g2.drawString(str, (int)x, (int)baseY);        try {            ImageIO.write(bi, "jpg", file);        } catch (IOException e) {            e.printStackTrace();        }        return file.getPath();    }    public static void main(String[] args) {        TestJdk2D02 t=  new TestJdk2D02();        System.out.println(t.create("小夜的传说","c:/",500,38));    }}

运行之后在您的C盘中可以查看生成图片的水印！

群号：1936625305 Java程序员联盟 欢迎大家的加入！