微博的图片文字水印处理方法
import java.awt.Font;import java.awt.FontMetrics;import java.awt.Graphics2D;import java.awt.Image;import java.awt.image.BufferedImage;import java.io.File;import java.io.FileOutputStream;import javax.imageio.ImageIO;import javax.imageio.ImageWriter;public class WaterMark { public void mark(String srcImgPath, String outImgPath, String watermarkStr) { try { // 读取原图片信息 File srcImgFile = new File(srcImgPath); Image srcImg = ImageIO.read(srcImgFile); int srcImgWidth = srcImg.getWidth(null); int srcImgHeight = srcImg.getHeight(null); // 加水印 BufferedImage bufImg = new BufferedImage(srcImgWidth, srcImgHeight, BufferedImage.TYPE_INT_RGB); Graphics2D g = bufImg.createGraphics(); g.drawImage(srcImg, 0, 0, srcImgWidth, srcImgHeight, null); Font font = new Font("Courier New", Font.PLAIN, 12); g.setFont(font); int x = srcImgWidth - getWatermarkLength(watermarkStr, g) - 3; int y = srcImgHeight - 3; g.drawString(watermarkStr, x, y); g.dispose(); // 输出图片 FileOutputStream outImgStream = new FileOutputStream(outImgPath); ImageIO.write(bufImg, "jpg", outImgStream); outImgStream.flush(); outImgStream.close(); } catch (Exception e) { e.printStackTrace(); } } //获取水印文字总长度 public int getWatermarkLength(String str, Graphics2D g) { return g.getFontMetrics(g.getFont()).charsWidth(str.toCharArray(), 0, str.length()); } public static void main(String[] args) { // 原图位置, 输出图片位置, 水印文字 // new WaterMark().mark("D://1.jpg","D://watermark.jpg","weibo.com/zhaojinglun"); new WaterMark().mark(args[0], args[1], args[2]); }}原文链接：http://www.qq2012ba.com/article/detail.asp?id=12580?