java向图片上写字,两个图片合并的方法

package writeimg;
import javax.imageio.ImageIO;
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;

public class pic {

    private Font font = new Font("华文彩云", Font.PLAIN, 40);// 添加字体的属性设置

    private Graphics2D g = null;

    private int fontsize = 0;

    private int x = 0;

    private int y = 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(Color.orange);//设置字体颜色
            if (this.font != null)
                g.setFont(this.font);
            // 验证输出位置的纵坐标和横坐标
            if (x >= h || y >= w) {
                this.x = h - this.fontsize + 2;
                this.y = w;
            } else {
                this.x = x;
                this.y = y;
            }
            if (content != null) {
                g.drawString(content.toString(), this.x, this.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（输出多个文本段） xory：true表示将内容在一行中输出；false表示将内容多行输出
     */
    public BufferedImage modifyImage(BufferedImage img, Object[] contentArr,
            int x, int y, boolean xory) {
        try {
            int w = img.getWidth();
            int h = img.getHeight();
            g = img.createGraphics();
            g.setBackground(Color.WHITE);
            g.setColor(Color.RED);
            if (this.font != null)
                g.setFont(this.font);
            // 验证输出位置的纵坐标和横坐标
            if (x >= h || y >= w) {
                this.x = h - this.fontsize + 2;
                this.y = w;
            } else {
                this.x = x;
                this.y = y;
            }
            if (contentArr != null) {
                int arrlen = contentArr.length;
                if (xory) {
                    for (int i = 0; i < arrlen; i++) {
                        g.drawString(contentArr[i].toString(), this.x, this.y);
                        this.x += contentArr[i].toString().length()
                                * this.fontsize / 2 + 5;// 重新计算文本输出位置
                    }
                } else {
                    for (int i = 0; i < arrlen; i++) {
                        g.drawString(contentArr[i].toString(), this.x, this.y);
                        this.y += this.fontsize + 2;// 重新计算文本输出位置
                    }
                }
            }
            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) {

        pic tt = new pic();

        BufferedImage d = tt.loadImageLocal("D:\\11.jpg");
//        BufferedImage b = tt
//                .loadImageLocal("E:\\文件(word,excel,pdf,ppt.txt)\\zte-logo.png");
         tt.writeImageLocal("D:\\cc.jpg",tt.modifyImage(d,"曹原",90,90)
        //往图片上写文件
         );

        //tt.writeImageLocal("D:\\cc.jpg", tt.modifyImagetogeter(b, d));
        //将多张图片合在一起
        System.out.println("success");
    }

}

本文转自：http://blog.csdn.net/caoyuan10036/article/details/7278735