如何运用Java 给图片加文字水印？

Posted 2021-09-07 diuxie

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：游戏图片水印处理类
• 作者：FH Admin
• from：www fhadmin org
  */

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 --
     *           游戏目标文件
     * @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 = www.sangpi.comnew 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);
        }
    }