工具类——java在图片指定位置写字

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.net.URL;

import javax.imageio.ImageIO;

public class PrintImage {

    private Font       font     = new Font("黑体", Font.PLAIN, 25); // 添加字体的属性设置

    private Graphics2D g        = null;

    private int        fontsize = 0;

    /**
     * 导入本地图片到缓冲区
     */
    public BufferedImage loadImageLocal(String imgName) {
        try {
            return ImageIO.read(new File(imgName));
        } catch (IOException e) {
            System.out.println(e.getMessage());
        }
        return null;
    }

    /**
     * 导入网络图片到缓冲区
     */
    public BufferedImage loadImageUrl(String imgName) {
        try {
            URL url = new URL(imgName);
            return ImageIO.read(url);
        } catch (IOException e) {
            System.out.println(e.getMessage());
        }
        return null;
    }

    /**
     * 生成新图片到本地
     */
    public void writeImageLocal(String newImage, BufferedImage img) {
        if (newImage != null && img != null) {
            try {
                File outputfile = new File(newImage);
                ImageIO.write(img, "jpg", outputfile);
            } catch (IOException e) {
                System.out.println(e.getMessage());
            }
        }
    }

    /**
     * 设定文字的字体等
     */
    public void setFont(String fontStyle, int fontSize) {
        this.fontsize = fontSize;
        this.font = new Font(fontStyle, Font.PLAIN, fontSize);
    }

    /**
     * 修改图片,返回修改后的图片缓冲区（只输出一行文本）
     */
    public BufferedImage modifyImage(BufferedImage img, Object content, int x, int y) {

        try {
            int w = img.getWidth();
            int h = img.getHeight();
            g = img.createGraphics();
            g.setBackground(Color.WHITE);
            g.setColor(new Color(120, 120, 110));//设置字体颜色
            if (this.font != null)
                g.setFont(this.font);
            if (content != null) {
                g.translate(w / 2, h / 2);
                g.rotate(8 * Math.PI / 180);
                g.drawString(content.toString(), x, y);
            }
            g.dispose();
        } catch (Exception e) {
            System.out.println(e.getMessage());
        }

        return img;
    }

    
    /**
     * 修改图片,返回修改后的图片缓冲区（只输出一行文本）
     *
     * 时间:2007-10-8
     *
     * @param img
     * @return
     */
    public BufferedImage modifyImageYe(BufferedImage img) {

        try {
            int w = img.getWidth();
            int h = img.getHeight();
            g = img.createGraphics();
            g.setBackground(Color.WHITE);
            g.setColor(Color.blue);//设置字体颜色
            if (this.font != null)
                g.setFont(this.font);
            g.drawString("www.hi.baidu.com?xia_mingjian", w - 85, h - 5);
            g.dispose();
        } catch (Exception e) {
            System.out.println(e.getMessage());
        }

        return img;
    }

    public BufferedImage modifyImagetogeter(BufferedImage b, BufferedImage d) {

        try {
            int w = b.getWidth();
            int h = b.getHeight();
            g = d.createGraphics();
            g.drawImage(b, 100, 10, w, h, null);
            g.dispose();
        } catch (Exception e) {
            System.out.println(e.getMessage());
        }

        return d;
    }

    public static void main(String[] args) {
        PrintImage tt = new PrintImage();
        BufferedImage d = tt.loadImageLocal("D:\\test\\ggl.jpg");
        String Cname = "寒洛";
        tt.modifyImage(d, Cname+" 先生", -299, -250);
        tt.writeImageLocal("D:\\test\\cc.jpg", d);
        System.out.println("success");
    }

}