JAVA图片上添加文字或图片

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package com.test;

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.font.FontRenderContext;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.text.ParseException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.imageio.ImageIO;
import javax.swing.ImageIcon;

import com.common.common.CommonHandleTrans;
import com.common.common.DateUtil;
import com.sun.image.codec.jpeg.ImageFormatException;
import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGImageDecoder;
import com.sun.image.codec.jpeg.JPEGImageEncoder;




public class TestImage {

	/**
	 * @param args
	 * @throws ParseException 
	 */
	public static void main(String[] args) throws ParseException {
		//exportImg2("万魔声学","d:/logo.jpg");
	}

	
	public static void exportImg1(){
		int width = 100;   
        int height = 100;   
        String s = "你好";   
           
        File file = new File("d:/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);   
           
        try {
			ImageIO.write(bi, "jpg", file);
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} 
	}
	
	public static void exportImg2(String username,String headImg){
		try {
			//1.jpg是你的 主图片的路径
	        InputStream is = new FileInputStream("d:/1.jpg");
	        
	        
	        //通过JPEG图象流创建JPEG数据流解码器
	        JPEGImageDecoder jpegDecoder = JPEGCodec.createJPEGDecoder(is);
	        //解码当前JPEG数据流，返回BufferedImage对象
	        BufferedImage buffImg = jpegDecoder.decodeAsBufferedImage();
	        //得到画笔对象
	        Graphics g = buffImg.getGraphics();
	        
	        //创建你要附加的图象。
	        //小图片的路径
	        ImageIcon imgIcon = new ImageIcon(headImg); 
	        
	        //得到Image对象。
	        Image img = imgIcon.getImage();
	        
	        //将小图片绘到大图片上。
	        //5,300 .表示你的小图片在大图片上的位置。
	        g.drawImage(img,400,15,null);
	        
	        //设置颜色。
	        g.setColor(Color.BLACK);
	        
	        
	        //最后一个参数用来设置字体的大小
	        Font f = new Font("宋体",Font.PLAIN,25);
	        Color mycolor = Color.red;//new Color(0, 0, 255);
	        g.setColor(mycolor);
	        g.setFont(f);
	        
	        //10,20 表示这段文字在图片上的位置(x,y) .第一个是你设置的内容。
	        g.drawString(username,100,135);
	        
	        g.dispose();
	        
	        
	        OutputStream os;
		
			//os = new FileOutputStream("d:/union.jpg");
	        String shareFileName = "\\upload\\" + System.currentTimeMillis() + ".jpg";
			os = new FileOutputStream(shareFileName);
			 //创键编码器，用于编码内存中的图象数据。	        
	        JPEGImageEncoder en = JPEGCodec.createJPEGEncoder(os);
	        en.encode(buffImg);	        
	        
	        is.close();
	        os.close();
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (ImageFormatException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
        
	}
	
}