java 图片水印处理类

package com.fh.util;

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.File;
import javax.imageio.ImageIO;
//import java.io.FileOutputStream;
//import com.sun.image.codec.jpeg.JPEGCodec;
//import com.sun.image.codec.jpeg.JPEGImageEncoder;

/**
 * 说明：图片水印处理类 
 * 作者：FH Admin 
 * from：fhadmin.cn
 */
public class Watermark {
  
    private static String strFWATERM,strIWATERM;
    
    static{
      strFWATERM = Tools.readTxtFile(Const.FWATERM);  //读取文字水印配置
      strIWATERM = Tools.readTxtFile(Const.IWATERM);  //读取图片水印配置
    }
    
    /**
     * 刷新
    */
    public static void fushValue(){
      strFWATERM = Tools.readTxtFile(Const.FWATERM);  //读取文字水印配置
      strIWATERM = Tools.readTxtFile(Const.IWATERM);  //读取图片水印配置
    }
      
    /**
     * @param imagePath 图片全路径
    */
      public static void setWatemark(String imagePath){ 
        //文字水印
        if(null != strFWATERM && !"".equals(strFWATERM)){
        String strFW[] = strFWATERM.split(",fh,");
        if(strFW.length == 5){
          if("yes".equals(strFW[0])){
            pressText(strFW[1].toString(), imagePath, "", 1, Color.RED,Integer.parseInt(strFW[2]), Integer.parseInt(strFW[3]), Integer.parseInt(strFW[4])); //文字
          }
        }
      }
        //图片水印
      if(null != strIWATERM && !"".equals(strIWATERM)){
        String strIW[] = strIWATERM.split(",fh,");
        if(strIW.length == 4){
          if("yes".equals(strIW[0])){
            pressImage(PathUtil.getClasspath() + Const.FILEPATHIMG+strIW[1], imagePath, Integer.parseInt(strIW[2]), Integer.parseInt(strIW[3]));
          }
        }
      }
      } 
    
      /**
       * 把图片印刷到图片上
       * 
       * @param pressImg --
       *            水印文件
       * @param targetImg --
       *            目标文件
       * @param x
       *            --x坐标
       * @param y
       *            --y坐标
       */
      public final static void pressImage(String pressImg, String targetImg,
              int x, int y) {
          try {
              //目标文件
              File _file = new File(targetImg);
              Image src = ImageIO.read(_file);
              int wideth = src.getWidth(null);
              int height = src.getHeight(null);
              BufferedImage image = new BufferedImage(wideth, height,
                      BufferedImage.TYPE_INT_RGB);
              Graphics g = image.createGraphics();
              g.drawImage(src, 0, 0, wideth, height, null);

              //水印文件
              File _filebiao = new File(pressImg);
              Image src_biao = ImageIO.read(_filebiao);
              int wideth_biao = src_biao.getWidth(null);
              int height_biao = src_biao.getHeight(null);
              //g.drawImage(src_biao, (wideth - wideth_biao) / 2,(height - height_biao) / 2, wideth_biao, height_biao, null);
              g.drawImage(src_biao, x, y, wideth_biao, height_biao, null);
              //水印文件结束
              g.dispose();
              /*FileOutputStream out = new FileOutputStream(targetImg);
              JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
              encoder.encode(image);
              out.close();*/
              String formatName = targetImg.substring(targetImg.lastIndexOf(".") + 1);
              ImageIO.write(image, /*"GIF"*/ formatName /* format desired */ , new File(targetImg) /* target */ );
              
          } catch (Exception e) {
              e.printStackTrace();
          }
      }

      /**
       * 打印文字水印图片
       * 
       * @param pressText
       *            --文字
       * @param targetImg --
       *            目标图片
       * @param fontName --
       *            字体名
       * @param fontStyle --
       *            字体样式
       * @param color --
       *            字体颜色
       * @param fontSize --
       *            字体大小
       * @param x --
       *            偏移量
       * @param y
       */

      public static void pressText(String pressText, String targetImg,
          String fontName, int fontStyle, Color color, int fontSize, int x,int y) {
          try {
              File _file = new File(targetImg);
              Image src = ImageIO.read(_file);
              int wideth = src.getWidth(null);
              int height = src.getHeight(null);
              BufferedImage image = new BufferedImage(wideth, height,
                      BufferedImage.TYPE_INT_RGB);
              Graphics g = image.createGraphics();
              g.drawImage(src, 0, 0, wideth, height, null);
              g.setColor(color);
              g.setFont(new Font(fontName, fontStyle, fontSize));
              g.drawString(pressText, x, y);
              g.dispose();
              /*FileOutputStream out = new FileOutputStream(targetImg);
              JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
              encoder.encode(image);
              out.close();*/
              String formatName = targetImg.substring(targetImg.lastIndexOf(".") + 1);
              ImageIO.write(image, /*"GIF"*/ formatName /* format desired */ , new File(targetImg) /* target */ );
          } catch (Exception e) {
              System.out.println(e);
          }
      }  
    
  
  
}