JAVA製作浮水印效果,字型和圖片,調節透明度,使用了JIMI的類庫

 原始圖片

要加的浮水印

製作好的圖片



原始碼

import java.io.IOException;
import java.awt.Graphics;
import java.awt.*;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.awt.image.ImageProducer;
import java.io.File;
import java.io.FileOutputStream;
import javax.imageio.ImageIO;
import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGImageEncoder;
import com.sun.jimi.core.Jimi;
import com.sun.jimi.core.JimiException;
import com.sun.jimi.core.JimiWriter;
import com.sun.jimi.core.options.JPGOptions;

/**
 * java做浮水印,字型和圖片,調節透明度.
 * 
 * @author myjava_024,老紫竹 JAVA世紀網(java2000.net)
 * 
 */
public class T {

  /**
   * 將任何格式的圖片轉換成JPG圖片 source原圖片路徑 dest 轉換後圖片的路徑
   */
  public void toReduce(String source, String dest) {
    try {
      JPGOptions options = new JPGOptions();
      options.setQuality(100);
      // 圖片格式在jimi的解碼格式範圍內
      ImageProducer image = Jimi.getImageProducer(source);
      // 圖片編碼
      JimiWriter writer = Jimi.createJimiWriter(dest);
      writer.setSource(image);
      // 對輸出檔案的屬性進行相關的設定，每種格式的屬性都不一樣
      writer.setOptions(options);
      writer.putImage(dest);
    } catch (JimiException je) {
      System.err.println("Error: " + je);
      je.printStackTrace();
    }
  }

  /**
   * 實現對圖片的抽取縮減並控制產生圖的大小 oldfile原圖片路徑 newfile縮減後的 圖片路徑 wideths 縮減後圖片的寬
   * heights縮減後圖片的高
   */
  public void changDimension(String oldfile, String newfile, int wideths,
      int heights) throws JimiException, IOException {
    String temp = newfile;
    File inputfile = null;
    this.toReduce(oldfile, temp);
    // 讀入檔案
    inputfile = new File(temp);
    // 構造Image對象
    Image src = ImageIO.read(inputfile);
    // double wideth = (double) src.getWidth(null); // 得到源圖寬
    // double height = (double) src.getHeight(null); // 得到源圖長
    int iWideth = wideths;
    int iHeight = heights;
    BufferedImage tag = null;
    try {
      tag = new BufferedImage(iWideth, iHeight, BufferedImage.TYPE_INT_RGB);
      // 繪製縮小後的圖
      tag.getGraphics().drawImage(src, 0, 0, iWideth, iHeight, null);
      JimiWriter writer = Jimi.createJimiWriter(newfile);
      writer.setSource(tag);
      writer.putImage(newfile);
    } catch (Exception e) {
      e.printStackTrace();
    }
  }

  /**
   * 給圖片添加文字 oldfile newfile就不用多說了 text 就是給圖片加的文字
   */
  public void Imagefont(String oldfile, String newfile, String text) {
    Image img;
    String filename = oldfile.substring(oldfile.lastIndexOf(".") + 1);
    String temp = newfile;

    try {
      if (!filename.equals("jpg")) {
        this.toReduce(oldfile, newfile);
        img = ImageIO.read(new File(temp));
      } else {
        img = ImageIO.read(new File(oldfile));
      }
      int width = img.getWidth(null);
      int height = img.getHeight(null);
      BufferedImage image = new BufferedImage(width, height,
          BufferedImage.TYPE_INT_RGB);
      Graphics g = image.createGraphics();

      g.drawImage(img, 0, 0, width, height, null);
      g.setColor(Color.red);
      g.setFont(new Font("Courier", Font.HANGING_BASELINE, 40));
      g.drawString(text, width - 360, height - 72);
      g.dispose();

      FileOutputStream os = new FileOutputStream(temp);
      JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(os);
      encoder.encode(image);

    } catch (Exception e) {
      e.getMessage();
    }
  }

  /**
   * 給圖片添加浮水印，並控制浮水印圖片的位置及透明度 oldfile newfile我也不說了 syoldfile 要添加的浮水印圖片的路徑 t
   * 浮水印圖品添加的位置 to 浮水印圖片的透明度
   */
  public void Imagese(String oldfile, String newfile, String syoldfile, int t,
      float to) {
    // 檔案類型
    String filename = oldfile.substring(oldfile.lastIndexOf(".") + 1);
    System.out.println(filename);
    Image img;
    String temp = newfile;
    float alpha = to;

    try {
      if (!filename.equals("jpg")) {
        toReduce(oldfile, newfile);
        img = ImageIO.read(new File(temp));
        System.out.println("其他類型圖片建立產生浮水印的圖片");
      } else {
        img = ImageIO.read(new File(oldfile));
      }
      int width = img.getWidth(null);
      int height = img.getHeight(null);
      int ws = width / 3;
      int hs = height / 3;


      BufferedImage image = new BufferedImage(width, height,
          BufferedImage.TYPE_INT_RGB);
      Graphics2D g = image.createGraphics();
      g.drawImage(img, 0, 0, width, height, null);
      Image logo = ImageIO.read(new File(syoldfile));
      int lw = logo.getWidth(null);
      int lh = logo.getHeight(null);
      // 設定圖片透明度
      g
          .setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP,
              alpha));
      g.drawImage(logo, null, null);

      switch (t) {
      case 1:
        g.drawImage(logo, 0, 0, lw, lh, null);
        System.out.println("布局一");
        break;
      case 2:
        g.drawImage(logo, ws, 0, lw, lh, null);
        System.out.println("布局二");
        break;
      case 3:
        g.drawImage(logo, 2 * ws, 0, lw, lh, null);
        System.out.println("布局三");
        break;
      case 4:
        g.drawImage(logo, 0, hs, lw, lh, null);
        System.out.println("布局四");
        break;
      case 5:
        g.drawImage(logo, ws, hs, lw, lh, null);
        System.out.println("布局五");
        break;
      case 6:
        g.drawImage(logo, 2 * ws, hs, lw, lh, null);
        System.out.println("布局六");
        break;
      case 7:
        g.drawImage(logo, 0, 2 * hs, lw, lh, null);
        System.out.println("布局七");
        break;
      case 8:
        g.drawImage(logo, ws, 2 * hs, lw, lh, null);
        System.out.println("布局八");
        break;
      case 9:
        g.drawImage(logo, 2 * ws, 2 * hs, lw, lh, null);
        System.out.println("布局九");
        break;
      default:
        break;
      }
      g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER));
      g.dispose();
      // 產生圖片
      FileOutputStream oss = new FileOutputStream(temp);
      JPEGImageEncoder encoders = JPEGCodec.createJPEGEncoder(oss);
      encoders.encode(image);
    } catch (Exception e) {
      e.getMessage();
      e.printStackTrace();
    }
  }

  public static void main(String[] args) {
    T test = new T();
    // alpha表示透明度，alpha 必須是範圍 [0.0, 1.0] 之內（包含邊界值）的一個浮點數字
    float alpha = 0.1f;
    // 產生浮水印圖

    test.Imagese("d:/eclipse.jpg", "d:/eclipse_java2000.jpg",
        "d:/java2000.jpg", 1, alpha);
    /*
     * test.Imagese("d:/001.jpg", "d:/aa/001.jpg", "d:/002.jpg", 1, alpha);
     * test.Imagese("d:/001.jpg", "d:/aa/002.jpg", "d:/002.jpg", 2, alpha);
     * test.Imagese("d:/001.jpg", "d:/aa/003.jpg", "d:/002.jpg", 3, alpha);
     * test.Imagese("d:/001.jpg", "d:/aa/004.jpg", "d:/002.jpg", 4, alpha);
     * test.Imagese("d:/001.jpg", "d:/aa/005.jpg", "d:/002.jpg", 5, alpha);
     * test.Imagese("d:/001.jpg", "d:/aa/006.jpg", "d:/002.jpg", 6, alpha);
     * test.Imagese("d:/001.jpg", "d:/aa/007.jpg", "d:/002.jpg", 7, alpha);
     * test.Imagese("d:/001.jpg", "d:/aa/008.jpg", "d:/002.jpg", 8, alpha);
     * test.Imagese("d:/001.jpg", "d:/aa/009.jpg", "d:/002.jpg", 9, alpha);
     */

  }
}