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动态图文结�?

javaboys — Sun, 01 Apr 2007 09:57:00 GMT

IBM已经有一��文章介�l�动态图文结合输出的文章�Q?�׃��此篇文章中��用了SUN的JPEG�Ҏ��c�：com.sun.image.codec.jpeg.*;我个��为通用性不好，利用jdk1.4的新特点�Q�也完全可以作到�Q?/p>

现将本�h实践的动态图文结合javabeans的核心公布如�?

import java.io.*;
import java.util.*;
import java.awt.image.BufferedImage;
import java.awt.Image;
import java.awt.image.AffineTransformOp;
import javax.imageio.ImageIO;
import java.awt.geom.AffineTransform;
import java.awt.Graphics2D;
import java.awt.Color;
import java.awt.Font;

..............

//生成BufferedImage实例,�q�是不需要真正显�C�时�l�常使用的类
BufferedImage Bi = ImageIO.read(F);

// 利用Graphics2D的新�Ҏ�?
Graphics2D g2D = Bi.createGraphics();

//定义字体(楷体或宋体等) 及其大小
Font myfont=new Font("\u5b8b\u4f53",Font.PLAIN,20);
g2D.setFont(myfont);
//字体颜色为黑
g2D.setColor(Color.BLACK);

//需要写在图片上文字注意:中文需要操作系�l�支持中�?如中文window,
// linux下要安装中文字库,�q��jdk1.4支持�q�个中文
String strs="hello everyone �?�?;

//在离�剙�� 和左边各�?0�?写入文字,该处使用了对中文处理的getBytes功能.
g2D.drawString(new String(strs.getBytes("ISO8859_1")),20,20);

//必须使用,表示完成
g2D.dispose();

try {
//使用ImageIO写入囄��
ImageIO.write(Bi, ext, ThF);

//原来是��用com.sun.image.codec.jpeg.*的功�?如下.需要下载com.sun.image.codec.jpeg
// FileOutputStream out = new FileOutputStream(ThF);
// JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
// encoder.encode(Bi);
// out.close();

}catch (Exception ex) {
throw new Exception(" ImageIo.write error in CreatThum.: "+ex.getMessage());
}

只要jsp��相兛_��数通知�q�个bean,��׃��L��产生自己的图�?下图我自己在linux上调试的�l�果,�׃��linux没有安装字库,所以下图中文不正常昄��,不过该程序我在中文win2000下调试正帔R��过:

原图:

效果�?/b>

��:

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javaboys 2007-04-01 17:57 发表评论

压羃和解压羃文�g

javaboys — Sun, 01 Apr 2007 09:53:00 GMT

压羃和解压羃文�g

/**
* 压羃和解压羃文�g
*/
import java.util.*;
import java.util.zip.*;
import java.io.*;

public class Zip {
public Zip(){}

/**
   * 压羃目录下的文�g
   * @param zipFileName
   * @param inputFile 目录
   * @throws java.lang.Exception
   */
public void zip(String zipFileName, String inputFile) throws Exception {
    zip(zipFileName, new File(inputFile));
}

/**
   * 压羃文�g
   * @param zipFileName
   * @param inputFile 文�g
   * @throws java.lang.Exception
   */
public void zip(String zipFileName, File inputFile) throws Exception {
    ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipFileName));
    zip(out, inputFile, "");
    System.out.println("压羃成功!");
    out.close();
}

public void zip(ZipOutputStream out, File f, String base) throws Exception {
    System.out.println("正在压羃 " + f.getName());
    if (f.isDirectory()) {
      File[] fl = f.listFiles();
      out.putNextEntry(new ZipEntry(base + "/"));
      base = base.length() == 0 ? "" : base + "/";
      for (int i = 0; i < fl.length; i++) {
        zip(out, fl[i], base + fl[i].getName());
      }
    }
    else {
      out.putNextEntry(new ZipEntry(base));
      FileInputStream in = new FileInputStream(f);
      int b;
      while ( (b = in.read()) != -1)
        out.write(b);
      in.close();
    }

}

/**
   * 解压�~?br />   * @param zipFileName
   * @param outputDirectory 输出目录
   * @throws java.lang.Exception
   */
public void unzip(String zipFileName, String outputDirectory) throws
      Exception {
    ZipInputStream in = new ZipInputStream(new FileInputStream(zipFileName));
    ZipEntry z;
    while ( (z = in.getNextEntry()) != null) {
      System.out.println("正在解压 " + z.getName());
      if (z.isDirectory()) {
        String name = z.getName();
        name = name.substring(0, name.length() - 1);
        File f = new File(outputDirectory + File.separator + name);
        f.mkdir();
        System.out.println("创徏目录 " + outputDirectory + File.separator + name);
      }
      else {
        File f = new File(outputDirectory + File.separator + z.getName());
        f.createNewFile();
        FileOutputStream out = new FileOutputStream(f);
        int b;
        while ( (b = in.read()) != -1)
          out.write(b);
        out.close();
      }
    }

    in.close();
}

public static void main(String[] args) {
    try {
      Zip t = new Zip();
//      t.zip("D:\\IdeaProjects.zip", "D:\\IdeaProjects");
//      t.unzip("d:\\ddd\\api.jar", "d:\\ddd\\");
    }
    catch (Exception e) {
      e.printStackTrace(System.out);
    }
}
}

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javaboys 2007-04-01 17:53 发表评论

[转] �l�网站上传的囄��盖章

javaboys — Sun, 01 Apr 2007 09:52:00 GMT

/************************************************
*
java对图片的操作(只能使用jpg)

* 对图片的�{��

* 对图片的�~�图

*
Title:java对图片的操作(只能使用jpg)

***********************************************/
package com.cn.wangk.test;
import java.io.*;
import com.sun.image.codec.jpeg.*;//sun公司仅提供了jpg囄��文�g的编码api
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.geom.AffineTransform;
import java.awt.image.AffineTransformOp;
import java.awt.image.BufferedImage;
import java.awt.image.ImageObserver;
import javax.imageio.ImageIO;
/**
* @author wangkai
*/
public class Test {
    /**
     *
     */
    public Test() {
        try {
            //生成以后新的囄��地址
            File fo = new File("c:\\4.jpg");
            //��d��的图片文�?br />            String imagePath = "C:\\Documents and Settings\\Administrator"
                    + "\\My Documents\\My Pictures\\1.jpg";
            //盖章的图片文�?br />            String toimagepth = "C:\\1.jpg";
            //得到囄��的文件流
            InputStream imageIn;
            imageIn = new FileInputStream(new File(imagePath));
            //得到输入的编码器�Q�将文�g��进行jpg格式�~�码
            JPEGImageDecoder decoder = JPEGCodec.createJPEGDecoder(imageIn);
            //得到�~�码后的囄��对象
            BufferedImage image = decoder.decodeAsBufferedImage();
            Graphics g = image.getGraphics();
            try {
                InputStream imageIn2 = null;
                imageIn2 = new FileInputStream(new File(toimagepth));
                //得到输入的编码器�Q�将文�g��进行jpg格式�~�码
                JPEGImageDecoder decoder2 = JPEGCodec
                        .createJPEGDecoder(imageIn2);
                //得到�~�码后的囄��对象
                BufferedImage image2 = decoder2.decodeAsBufferedImage();
                //加盖囄��?br />                ImageObserver obser = null;
                int x = image.getWidth() - image2.getWidth();
                int y = image.getHeight() - image2.getHeight();
                g.drawImage(image2, x, y, obser);
            } catch (FileNotFoundException e) {
                //打开文�g��p�|�Q�表�C�章囄��不存在，�q�时候直接加盖文件章�Q�签名）
                g.setFont(new Font("宋体", Font.PLAIN, 18));
                g.drawString("�U�水工作�?, image.getWidth() - 100,
                        image.getHeight() - 20);
                g.drawString("water_wang@xs.zj.cn", image.getWidth() - 180,
                        image.getHeight() - 10);
            }
            g.dispose();
            ImageIO.write(image, "jpeg", fo);
            System.out.println("ok");
        } catch (FileNotFoundException e) {
            // 自动生成 catch �?br />            e.printStackTrace();
        } catch (ImageFormatException e) {
            // 自动生成 catch �?br />            e.printStackTrace();
        } catch (IOException e) {
            // 自动生成 catch �?br />            e.printStackTrace();
        }
    }
    public static void saveFixedBoundIcon(File imageFile, int height, int width)
            throws Exception {
        double Ratio = 0.0;
        if (imageFile == null || !imageFile.isFile())
            throw new Exception(imageFile + "找不到指定的文�g!");
        String filePath = imageFile.getPath();
        BufferedImage Bi = ImageIO.read(imageFile);
        if ((Bi.getHeight() > height) || (Bi.getWidth() > width)) {
            if (Bi.getHeight() > Bi.getWidth()) {
                Ratio = (new Integer(height)).doubleValue() / Bi.getHeight();
            } else {
                Ratio = (new Integer(width)).doubleValue() / Bi.getWidth();
            }
            File savefile = new File(filePath + "_" + height + "_" + width
                    + ".jpg");
            Image Itemp = Bi.getScaledInstance(width, height,
                    Image.SCALE_SMOOTH);
            AffineTransformOp op = new AffineTransformOp(AffineTransform
                    .getScaleInstance(Ratio, Ratio), null);
            Itemp = op.filter(Bi, null);
            try {
                ImageIO.write((BufferedImage) Itemp, "jpeg", savefile);
            } catch (Exception ex) {
            }
        }
    }
    public static void main(String[] args) {
        //       Test ts = new Test();
        try {
            Test.saveFixedBoundIcon(new File(
                    "C:\\test.jpg"), 200, 200);
        } catch (Exception e) {
            // 自动生成 catch �?br />            e.printStackTrace();
        }
    }
}

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javaboys 2007-04-01 17:52 发表评论

欧美日韩在线播放一区二区,国产精品欧美一区二区三区,色婷婷精品大视频在线蜜桃视频

动态图文结�?

压羃和解压羃文�g

[转] �l�网站上传的囄���盖章

[转] �l�网站上传的囄��盖章