day17:验证码

shy-coder · shy-coder · commit e6c34d6b8153 · 2020-11-05T21:14:28.000+08:00
diff --git a/src/main/java/com/shy/day17/RandomCode.java b/src/main/java/com/shy/day17/RandomCode.java
@@ -0,0 +1,68 @@
+package com.shy.day17;
+
+import javax.imageio.ImageIO;
+import java.awt.*;
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.util.Random;
+
+/**
+ * @ClassName RandomCode
+ * @Author shy
+ * @deprecated 随机字符串验证码
+ * @Date 2020/11/5
+ **/
+public class RandomCode {
+    private static final int LENGTH = 4;
+    private static final int BOUNDS = 4;
+
+    public static void main(String[] args) throws IOException {
+        Random random = new Random();
+        //指定图片大小和类型
+        BufferedImage bufferedImage = new BufferedImage(120, 40, BufferedImage.TYPE_INT_RGB);
+        //获取画笔
+        Graphics graphics = bufferedImage.getGraphics();
+        //获取字体
+        Font font = new Font("方正华隶简体", Font.BOLD, 20);
+        graphics.setFont(font);
+        graphics.setColor(Color.WHITE);
+        //开始绘制
+        graphics.fillRect(0, 0, 120, 40);
+        String s = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdfghijklmnopqrstuvwxyz123456789";
+        char[] chs = s.toCharArray();
+        StringBuilder string = new StringBuilder();
+        for (int i = 0; i < LENGTH; i++) {
+            char ch = chs[random.nextInt(60)];
+            string.append(ch);
+        }
+        //生成随机验证码
+        graphics.setColor(Color.BLACK);
+        graphics.drawString(string.toString(), 40 ,28);
+        //生成干扰线
+        for (int i = 0; i < BOUNDS; i++) {
+            //随机颜色
+            int redRandom = random.nextInt(256);
+            int greenRandom = random.nextInt(256);
+            int blueRandom = random.nextInt(256);
+            //随机坐标
+            int x1 = random.nextInt(120);
+            int y1 = random.nextInt(120);
+            int x2 = random.nextInt(120);
+            int y2 = random.nextInt(120);
+            Color color = new Color(redRandom, greenRandom, blueRandom);
+            graphics.setColor(color);
+            graphics.drawLine(x1,y1,x2,y2);
+        }
+        //输出图片，并指定文件路径，自己注意修改
+        File file = new File("E:\\code.jpg");
+        //获取输出流
+        OutputStream outputStream = new FileOutputStream(file);
+        //将图片从缓冲区通过字节写到文件
+        ImageIO.write(bufferedImage,"jpg",outputStream);
+        //关闭输出流
+        outputStream.close();
+    }
+}
