Java 给图片和动图添加水印的方法

import java.awt.*; 
import java.awt.image.bufferedimage; 
import java.io.*;  
import javax.imageio.imageio; 
import javax.swing.imageicon;   
//这下面是 gif4j 框架的类 
import com.gif4j.gifdecoder; 
import com.gif4j.gifencoder; 
import com.gif4j.gifimage; 
import com.gif4j.giftransformer; 
import com.gif4j.textpainter; 
import com.gif4j.watermark;   
/** 
 * created by zxd on 2018/1/18. 
 */ 
public class imageremarkutil { 
  // 水印透明度 
  private float alpha = 0.5f; 
  // 水印横向位置 
  private int positionwidth = 150; 
  // 水印纵向位置 
  private int positionheight = 300; 
  //水印宽 
  private int width = 80; 
  //水印高 
  private int height = 80; 
  // 水印文字字体 
  private font font = new font("宋体", font.bold, 72); 
  // 水印文字颜色 
  private color color = color.red; 
  
  
  /***********普通图片加水印***********/ 
  
  /** 
   * 
   * @param alpha 
   *      水印透明度 
   * @param positionwidth 
   *      水印横向位置 
   * @param positionheight 
   *      水印纵向位置 
   * @param font 
   *      水印文字字体 
   * @param color 
   *      水印文字颜色 
   */ 
  public void setimagemarkoptions(float alpha, int positionwidth, 
                      int positionheight,int width,int height, font font, color color) { 
    if (alpha != 0.0f) 
      this.alpha = alpha; 
    if (positionwidth != 0) 
      this.positionwidth = positionwidth; 
    if (positionheight != 0) 
      this.positionheight = positionheight; 
    if (height != 0) 
      this.height = height; 
    if (width != 0) 
      this.width = width; 
    if (font != null) 
      this.font = font; 
    if (color != null) 
      this.color = color; 
  } 
  
  /** 
   * 给图片添加水印图片 
   * 
   * @param iconpath 
   *      水印图片路径 
   * @param srcimgpath 
   *      源图片路径 
   * @param targerpath 
   *      目标图片路径 
   */ 
  public void markimagebyicon(string iconpath, string srcimgpath, 
                    string targerpath) { 
    markimagebyicon(iconpath, srcimgpath, targerpath, null); 
  } 
  
  /** 
   * 给图片添加水印图片、可设置水印图片旋转角度 
   * 
   * @param iconpath 
   *      水印图片路径 
   * @param srcimgpath 
   *      源图片路径 
   * @param targerpath 
   *      目标图片路径 
   * @param degree 
   *      水印图片旋转角度 
   */ 
  public void markimagebyicon(string iconpath, string srcimgpath, 
                    string targerpath, integer degree) { 
    outputstream os = null; 
    try { 
  
      image srcimg = imageio.read(new file(srcimgpath)); 
      bufferedimage buffimg = new bufferedimage(srcimg.getwidth(null), 
          srcimg.getheight(null), bufferedimage.type_int_rgb); 
  
      // 1、得到画笔对象 
      graphics2d g = buffimg.creategraphics(); 
  
      // 2、设置对线段的锯齿状边缘处理 
      g.setrenderinghint(renderinghints.key_interpolation, 
          renderinghints.value_interpolation_bilinear); 
  
      g.drawimage( 
          srcimg.getscaledinstance(srcimg.getwidth(null), 
              srcimg.getheight(null), image.scale_smooth), 0, 0, 
          null); 
      // 3、设置水印旋转 
      if (null != degree) { 
        g.rotate(math.toradians(degree), 
            (double) buffimg.getwidth() / 2, 
            (double) buffimg.getheight() / 2); 
      } 
  
      // 4、水印图片的路径 水印图片一般为gif或者png的，这样可设置透明度 
      imageicon imgicon = new imageicon(iconpath); 
  
      // 5、得到image对象。 
      image img = imgicon.getimage(); 
  
      g.setcomposite(alphacomposite.getinstance(alphacomposite.src_atop, 
          alpha)); 
  
      integer x = srcimg.getwidth(null); 
  
      integer y = srcimg.getheight(null); 
  
      // 6、水印图片的位置 
      g.drawimage(img, x-(positionwidth+width), y-(positionheight+height),width,height,null); 
  
      g.setcomposite(alphacomposite.getinstance(alphacomposite.src_over)); 
      // 7、释放资源 
      g.dispose(); 
  
      // 8、生成图片 
      os = new fileoutputstream(targerpath); 
      imageio.write(buffimg, "jpg", os); 
  
      system.out.println("图片完成添加水印图片"); 
  
    } catch (exception e) { 
      e.printstacktrace(); 
    } finally { 
      try { 
        if (null != os) 
          os.close(); 
      } catch (exception e) { 
        e.printstacktrace(); 
      } 
    } 
  } 
  
  /** 
   * 给图片添加水印文字 
   * 
   * @param logotext 
   *      水印文字 
   * @param srcimgpath 
   *      源图片路径 
   * @param targerpath 
   *      目标图片路径 
   */ 
  public void markimagebytext(string logotext, string srcimgpath, 
                    string targerpath) { 
    markimagebytext(logotext, srcimgpath, targerpath, null); 
  } 
  
  /** 
   * 给图片添加水印文字、可设置水印文字的旋转角度 
   * 
   * @param logotext 
   * @param srcimgpath 
   * @param targerpath 
   * @param degree 
   */ 
  public void markimagebytext(string logotext, string srcimgpath, 
                    string targerpath, integer degree) { 
  
    inputstream is = null; 
    outputstream os = null; 
    try { 
      // 1、源图片 
      image srcimg = imageio.read(new file(srcimgpath)); 
      bufferedimage buffimg = new bufferedimage(srcimg.getwidth(null), 
          srcimg.getheight(null), bufferedimage.type_int_rgb); 
  
      // 2、得到画笔对象 
      graphics2d g = buffimg.creategraphics(); 
      // 3、设置对线段的锯齿状边缘处理 
      g.setrenderinghint(renderinghints.key_interpolation, 
          renderinghints.value_interpolation_bilinear); 
      g.drawimage( 
          srcimg.getscaledinstance(srcimg.getwidth(null), 
              srcimg.getheight(null), image.scale_smooth), 0, 0, 
          null); 
      // 4、设置水印旋转 
      if (null != degree) { 
        g.rotate(math.toradians(degree), 
            (double) buffimg.getwidth() / 2, 
            (double) buffimg.getheight() / 2); 
      } 
      // 5、设置水印文字颜色 
      g.setcolor(color); 
      // 6、设置水印文字font 
      g.setfont(font); 
      // 7、设置水印文字透明度 
      g.setcomposite(alphacomposite.getinstance(alphacomposite.src_atop, 
          alpha)); 
      // 8、第一参数->设置的内容，后面两个参数->文字在图片上的坐标位置(x,y) 
      g.drawstring(logotext, positionwidth, positionheight); 
      // 9、释放资源 
      g.dispose(); 
      // 10、生成图片 
      os = new fileoutputstream(targerpath); 
      imageio.write(buffimg, "jpg", os); 
  
      system.out.println("图片完成添加水印文字"); 
  
    } catch (exception e) { 
      e.printstacktrace(); 
    } finally { 
      try { 
        if (null != is) 
          is.close(); 
      } catch (exception e) { 
        e.printstacktrace(); 
      } 
      try { 
        if (null != os) 
          os.close(); 
      } catch (exception e) { 
        e.printstacktrace(); 
      } 
    } 
  } 
   
  /*********** 动图加水印 ************/ 
  
  /** 
   * 缩放gif图片，直接传的file文件，可设置宽和高 
   */ 
  public void makegif(file src, file dest, int width, int height) throws ioexception { 
      gifimage gifimage = gifdecoder.decode(src);// 创建一个gifimage对象. 
      gifimage resizeimg = giftransformer.resize(gifimage, width, height, true); 
      gifencoder.encode(resizeimg, dest); 
    } 
   //缩放gif图片，直接传文件路径，可设置宽和高 
  public void makegif(string src, string dest, int width, int height) throws ioexception { 
    gifimage gifimage = gifdecoder.decode(new file(src));// 创建一个gifimage对象.   
    makegif(new file(src), new file(dest), gifimage.getscreenwidth() / 2, 
        gifimage.getscreenheight() / 2); 
  
  } 
   //缩放gif图片，传文件file文件，不可设置宽和高 
  public void makegif(file src, file dest) throws ioexception {   
    gifimage gifimage = gifdecoder.decode(src);// 创建一个gifimage对象.   
    makegif(src, dest, gifimage.getscreenwidth() / 2, gifimage.getscreenheight() / 2);   
  } 
   //缩放gif图片，传文件路径，不可设置宽和高 
  public void makegif(string src, string dest) throws ioexception {   
    makegif(new file(src), new file(dest));   
  } 
  
  /** 
   * 动图中加文字水印 
   */ 
  public void addtextwatermarktogif(file src, string watermarktext, file dest)throws ioexception {   
    //水印初始化、设置（字体、样式、大小、颜色）   
    textpainter textpainter = new textpainter(new font("黑体", font.italic, 12));   
    textpainter.setoutlinepaint(color.white);   
    bufferedimage renderedwatermarktext = textpainter.renderstring(watermarktext, true);   
    //图片对象 
    gifimage gf = gifdecoder.decode(src);   
    //获取图片大小   
    int iw = gf.getscreenwidth();   
    int ih = gf.getscreenheight();   
    //获取水印大小 
      int tw = renderedwatermarktext.getwidth();   
    int th = renderedwatermarktext.getheight();   
    //水印位置   
    point p = new point(); 
    p.x = iw - tw - 5; 
    p.y = ih - th - 4; 
      //加水印 
    watermark watermark = new watermark(renderedwatermarktext, p); 
    gf = watermark.apply(gifdecoder.decode(src), true); 
    //输出 
    gifencoder.encode(gf, dest); 
  } 
  
  /** 
   * 动图中加图片水印 
   */ 
  public void addimagewatermarktogif(file src, string watermarkpath, file dest){ 
  
    try{ 
  
      bufferedimage renderedwatermarktext = imageio.read(new file(watermarkpath)); 
  
      //图片对象 
      gifimage gf = gifdecoder.decode(src); 
  
      //获取图片大小 
      int iw = gf.getscreenwidth(); 
      int ih = gf.getscreenheight(); 
  
      //获取水印大小 
      int tw = renderedwatermarktext.getwidth(); 
      int th = renderedwatermarktext.getheight(); 
  
      //水印位置 
      point p = new point(); 
      p.x = iw-tw-20; 
      p.y = ih-th-20; 
  
      //加水印 
      watermark watermark = new watermark(renderedwatermarktext, p); 
      //水印透明度 
      watermark.settransparency(1); 
      gf = watermark.apply(gifdecoder.decode(src), false); 
      //输出 
      gifencoder.encode(gf, dest); 
    } catch (ioexception e){ 
      e.printstacktrace(); 
    } 
  }  
  
  public static void main(string[] args) { 
    //需要加水印图片的路径 
    string srcimgpath = "d:/1.jpg"; 
    string logotext = "复 印 无 效"; 
    //图片水印的路径 
    string iconpath = "d:/2.jpg"; 
  
     //添加完水印文件的输出路径 
    string targertextpath = "d:/qie_text.jpg"; 
    string targertextpath2 = "d:/qie_text_rotate.jpg"; 
    string targericonpath = "d:/qie_icon.jpg"; 
    string targericonpath2 = "d:/qie_icon_rotate.jpg"; 
  
    system.out.println("给图片添加水印文字开始..."); 
    // 给图片添加水印文字 
    markimagebytext(logotext, srcimgpath, targertextpath); 
    // 给图片添加水印文字,水印文字旋转-45 
    markimagebytext(logotext, srcimgpath, targertextpath2, -45); 
    system.out.println("给图片添加水印文字结束..."); 
  
    system.out.println("给图片添加水印图片开始..."); 
    setimagemarkoptions(0.3f, 1, 1, null, null); 
     // 给图片添加水印图片 
    markimagebyicon(iconpath, srcimgpath, targericonpath); 
    // 给图片添加水印图片,水印图片旋转-45 
    markimagebyicon(iconpath, srcimgpath, targericonpath2, -45); 
    system.out.println("给图片添加水印图片结束..."); 
  
    //动图添加水印（添加水印动图文件，添加的水印，添加完输出文件） 
    addtextwatermarktogif(new file("d:\\10.gif"), "复 印 无 效", new file("d:\\11.gif")); 
    addimagewatermarktogif(new file("d:\\gif\\10.gif"), "d:\\gif\\3.png", new file("d:\\gif\\4.gif"));   
  }   
}