产生彩色验证码_(javabean实现)

import java.awt.*;
import java.awt.image.*;
import java.util.*;

/**
 * @author
 *
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 */
public class Image {
 
  public String sRand="";
 
  public Color getRandColor(int fc,int bc){//给定范围获得随机颜色
   Random random = new Random();
   if(fc>255) fc=255;
   if(bc>255) bc=255;
   int r=fc+random.nextInt(bc-fc);
   int g=fc+random.nextInt(bc-fc);
   int b=fc+random.nextInt(bc-fc);
   return new Color(r,g,b);
   }
  public BufferedImage creatImage(){

 // 在内存中创建图象
    int width=60, height=20;
    BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);

    // 获取图形上下文
    Graphics g = image.getGraphics();

    //生成随机类
    Random random = new Random();

    // 设定背景色
    g.setColor(getRandColor(200,250));
    g.fillRect(0, 0, width, height);

    //设定字体
    g.setFont(new Font("Times New Roman",Font.PLAIN,18));