在服務器端動態生成gif or jpg示例

package web.images;

/**

* 此處插入類型描述。

* 創建日期：(2002-6-6 9:59:00)

* @author：Administrator

*/

import Java.io.*;

import Java.util.*;

import com.sun.image.codec.jpeg.*;

import Java.awt.image.*;

import Java.awt.*;

public class ChartGraphics {

BufferedImage image;

public void createImage(String fileLocation) {

try {

FileOutputStream fos = new FileOutputStream(fileLocation);

BufferedOutputStream bos = new BufferedOutputStream(fos);

JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(bos);

encoder.encode(image);

bos.close();

} catch(Exception e) {

System.out.println(e);

}

}

public void graphicsGeneration(int h1,int h2,int h3,int h4,int h5) {

final int X=10;

int imageWidth = 800;//圖片的寬度

int imageHeight =900;//圖片的高度

int columnWidth=70;//柱的寬度

int columnHeight=800;//柱的最大高度

ChartGraphics chartGraphics = new ChartGraphics();

chartGraphics.image = new BufferedImage(imageWidth, imageHeight, BufferedImage.TYPE_INT_RGB);

Graphics graphics = chartGraphics.image.getGraphics();

graphics.setColor(Color.white);

graphics.fillRect(0,0,imageWidth,imageHeight);

graphics.setColor(Color.black);

//graphics.setXORMode(Color.blue);

graphics.drawLine(columnWidth+X,columnHeight-h5-50,columnWidth+X,columnHeight);//Y軸

graphics.drawLine(columnWidth+X,columnHeight-h5-50,columnWidth+X-10,columnHeight-h5-40);//Y軸箭頭左

graphics.drawLine(columnWidth+X,columnHeight-h5-50,columnWidth+X+10,columnHeight-h5-40);//Y軸箭頭右

graphics.drawLine(750,columnHeight,columnWidth+X,columnHeight);//X軸

graphics.drawLine(750,columnHeight,740,columnHeight-10);//X軸

graphics.drawLine(750,columnHeight,740,columnHeight+10);//X軸

graphics.setColor(Color.yellow);

graphics.fillRect(X+1*columnWidth+10, columnHeight-h1, columnWidth, h1);

graphics.fillRect(X+2*columnWidth+20, columnHeight-h2, columnWidth, h2);

graphics.fillRect(X+3*columnWidth+30, columnHeight-h3, columnWidth, h3);

graphics.fillRect(X+4*columnWidth+40, columnHeight-h4, columnWidth, h4);

graphics.fillRect(X+5*columnWidth+50, columnHeight-h5, columnWidth, h5);

//graphics.drawString()

chartGraphics.createImage("D:\\leaderquery\\leaderqueryWeb\\web800\\images\\chart.jpg");

}

}