验证中...
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语言: Java
分类: 常用工具包
最后更新于 2018-12-09 10:36
gistfile1.txt
原始数据 复制代码
package com.maxzuo.common;
import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Random;
/**
* 验证码工具类
*/
public class ValidateCode {
/**
* 图片的宽度
*/
private int width = 160;
/**
* 图片的高度
*/
private int height = 40;
/**
* 验证码字符个数
*/
private int codeCount = 5;
/**
* 验证码干扰线数
*/
private int lineCount = 150;
/**
* 验证码
*/
private static String code = null;
/**
* 验证码图片Buffer
*/
private BufferedImage buffImg = null;
private char[] codeSequence = {'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L',
'M', 'N', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y',
'Z', '1', '2', '3', '4', '5', '6', '7', '8', '9'};
public ValidateCode() {
this.createCode();
}
/**
* @param width 图片宽
* @param height 图片高
*/
public ValidateCode(int width, int height) {
this.width = width;
this.height = height;
this.createCode();
}
/**
* @param width 图片宽
* @param height 图片高
* @param codeCount 字符个数
* @param lineCount 干扰线条数
*/
public ValidateCode(int width, int height, int codeCount, int lineCount) {
this.width = width;
this.height = height;
this.codeCount = codeCount;
this.lineCount = lineCount;
this.createCode();
}
public void createCode() {
int x = 0, fontHeight = 0, codeY = 0;
int red = 0, green = 0, blue = 0;
//每个字符的宽度
x = width / (codeCount + 2);
//字体的高度
fontHeight = height - 2;
codeY = height - 4;
// 图像buffer
buffImg = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
Graphics2D g = buffImg.createGraphics();
// 生成随机数
Random random = new Random();
// 将图像填充为白色
g.setColor(Color.WHITE);
g.fillRect(0, 0, width, height);
// 创建字体
Font font = new Font("Arial",Font.PLAIN, fontHeight);
g.setFont(font);
for (int i = 0; i < lineCount; i++) {
int xs = random.nextInt(width);
int ys = random.nextInt(height);
int xe = xs + random.nextInt(width / 8);
int ye = ys + random.nextInt(height / 8);
red = random.nextInt(255);
green = random.nextInt(255);
blue = random.nextInt(255);
g.setColor(new Color(red, green, blue));
g.drawLine(xs, ys, xe, ye);
}
// randomCode记录随机产生的验证码
StringBuffer randomCode = new StringBuffer();
// 随机产生codeCount个字符的验证码。
for (int i = 0; i < codeCount; i++) {
String strRand = String.valueOf(codeSequence[random.nextInt(codeSequence.length)]);
// 产生随机的颜色值,让输出的每个字符的颜色值都将不同。
red = random.nextInt(255);
green = random.nextInt(255);
blue = random.nextInt(255);
g.setColor(new Color(red, green, blue));
g.drawString(strRand, (i + 1) * x, codeY);
// 将产生的四个随机数组合在一起。
randomCode.append(strRand);
}
// 将四位数字的验证码保存到Session中。
code = randomCode.toString();
}
public void write(String path) throws IOException {
OutputStream sos = new FileOutputStream(path);
this.write(sos);
}
public void write(OutputStream sos) throws IOException {
ImageIO.write(buffImg, "png", sos);
sos.close();
}
public BufferedImage getBuffImg() {
return buffImg;
}
public static String getCode() {
return code;
}
public static void main(String[] args) {
ValidateCode validateCode = new ValidateCode(120, 40, 5, 100);
try{
String path = "C:\\Users\\nick\\Desktop\\" + System.currentTimeMillis() + ".png";
System.out.println(getCode() + " >" + path);
validateCode.write(path);
}catch(IOException e){
e.printStackTrace();
}
}
}

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