基于javaweb的鞋子销售网站源码+sql数据库(本科课设).zip

package com.zou.utils; import java.awt.BasicStroke; import java.awt.Color; import java.awt.Font; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.geom.AffineTransform; import java.awt.geom.Line2D; import java.awt.image.BufferedImage; import java.util.Random; public class ImageUtils { private static String code; public static String getCode() { return code; } public static BufferedImage createImage(int width, int height, int n) { // 指定验证码的高度 BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); // 获得该图片的画笔 Graphics g = image.getGraphics(); // 设置填充色进行填充 g.setColor(Color.WHITE); g.fillRect(0, 0, width, height); // 设置画笔颜色，准备绘制 g.setColor(Color.BLACK); // 从给定的字符中随机生成4个字符 char[] element = "123456789abcdefghijklmnopqrstuvwxyz".toCharArray(); String checkcode = ""; Random random = new Random(); for (int i = 0; i < n; i++) { int randomIndex = Math.abs(random.nextInt()) % element.length; checkcode = checkcode + element[randomIndex]; } g.drawString(checkcode, 10, 16); code=checkcode; return image; } public static BufferedImage createMulImage(int width,int height,int n){ BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); Graphics g = image.getGraphics(); //获取Graphics类的对象 Graphics2D g2d = (Graphics2D) g; Random random = new Random(); //实例化一个Random对象 Font mFont = new Font("黑体", Font.BOLD, 17); //通过Font构造字体 g.setColor(getRandColor(200, 250)); //设置颜色 g.fillRect(0, 0, width, height); //绘制验证码背景 g.setFont(mFont); //设置字体 g.setColor(getRandColor(180, 200)); //设置颜色 // 画随机的线条 for (int i = 0; i < 100; i++) { int x = random.nextInt(width - 1); //生成起始点x轴的坐标 int y = random.nextInt(height - 1); //生成起始点y轴的坐标 int x1 = random.nextInt(6) + 1; //生成结束点x轴的坐标 int y1 = random.nextInt(12) + 1; //生成结束点y轴的坐标 BasicStroke bs = new BasicStroke(2f, BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL); Line2D line = new Line2D.Double(x, y, x + x1, y + y1); g2d.setStroke(bs); g2d.draw(line); //绘制直线 } String sRand = ""; // 输出随机的验证文字 String ctmp = ""; int itmp = 0; for (int i = 0; i < n; i++) { if((random.nextInt(2)+1)==1){ itmp = random.nextInt(10) + 48; // 生成0~9的数字 ctmp = String.valueOf((char) itmp); }else{ itmp = random.nextInt(26) + 65; // 生成A~Z的字母 ctmp = String.valueOf((char) itmp); } sRand += ctmp; Color color = new Color(20 + random.nextInt(110), 20 + random .nextInt(110), 20 + random.nextInt(110)); g.setColor(color); //设置文字颜色 /** **随机缩放文字并将文字旋转指定角度* */ // 将文字旋转指定角度 Graphics2D g2d_word = (Graphics2D) g; AffineTransform trans = new AffineTransform(); trans.rotate(random.nextInt(45) * 3.14 / 180, 15 * i + 8, 7); // 缩放文字 float scaleSize = random.nextFloat() +0.8f; if (scaleSize > 1f) scaleSize = 1f; trans.scale(scaleSize, scaleSize); g2d_word.setTransform(trans); /** ********************* */ g.drawString(ctmp, 15 * i + 18, 14); } code=sRand; return image; } // 获取随机颜色 public static Color getRandColor(int s, int e) { Random random = new Random(); if (s > 255) s = 255; if (e > 255) e = 255; int r = s + random.nextInt(e - s); //随机生成RGB颜色中的r值 int g = s + random.nextInt(e - s); //随机生成RGB颜色中的g值 int b = s + random.nextInt(e - s); //随机生成RGB颜色中的b值 return new Color(r, g, b); } }