vue版本上线

2021-04-07 23:53:57 +08:00
parent 76a0033a4e
commit f4ef5aa067
803 changed files with 171959 additions and 27 deletions
--- a/jshERP-boot/src/main/java/com/jsh/erp/utils/RandImageUtil.java
+++ b/jshERP-boot/src/main/java/com/jsh/erp/utils/RandImageUtil.java
@@ -0,0 +1,140 @@
+package com.jsh.erp.utils;
+
+import javax.imageio.ImageIO;
+import javax.servlet.http.HttpServletResponse;
+import java.awt.*;
+import java.awt.image.BufferedImage;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.util.Base64;
+import java.util.Random;
+
+/**
+ * 登录验证码工具类
+ */
+public class RandImageUtil {
+
+    public static final String key = "JEECG_LOGIN_KEY";
+
+    /**
+     * 定义图形大小
+     */
+    private static final int width = 105;
+    /**
+     * 定义图形大小
+     */
+    private static final int height = 35;
+
+    /**
+     * 定义干扰线数量
+     */
+    private static final int count = 200;
+
+    /**
+     * 干扰线的长度=1.414*lineWidth
+     */
+    private static final int lineWidth = 2;
+
+    /**
+     * 图片格式
+     */
+    private static final String IMG_FORMAT = "JPEG";
+
+    /**
+     * base64 图片前缀
+     */
+    private static final String BASE64_PRE = "data:image/jpg;base64,";
+
+    /**
+     * 直接通过response 返回图片
+     * @param response
+     * @param resultCode
+     * @throws IOException
+     */
+    public static void generate(HttpServletResponse response, String resultCode) throws IOException {
+        BufferedImage image = getImageBuffer(resultCode);
+        // 输出图象到页面
+        ImageIO.write(image, IMG_FORMAT, response.getOutputStream());
+    }
+
+    /**
+     * 生成base64字符串
+     * @param resultCode
+     * @return
+     * @throws IOException
+     */
+    public static String generate(String resultCode) throws IOException {
+        BufferedImage image = getImageBuffer(resultCode);
+
+        ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
+        //写入流中
+        ImageIO.write(image, IMG_FORMAT, byteStream);
+        //转换成字节
+        byte[] bytes = byteStream.toByteArray();
+        //转换成base64串
+        String base64 = Base64.getEncoder().encodeToString(bytes).trim();
+        base64 = base64.replaceAll("\n", "").replaceAll("\r", "");//删除 \r\n
+
+        //写到指定位置
+        //ImageIO.write(bufferedImage, "png", new File(""));
+
+        return BASE64_PRE+base64;
+    }
+
+    private static BufferedImage getImageBuffer(String resultCode){
+        // 在内存中创建图象
+        final BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
+        // 获取图形上下文
+        final Graphics2D graphics = (Graphics2D) image.getGraphics();
+        // 设定背景颜色
+        graphics.setColor(Color.WHITE); // ---1
+        graphics.fillRect(0, 0, width, height);
+        // 设定边框颜色
+//		graphics.setColor(getRandColor(100, 200)); // ---2
+        graphics.drawRect(0, 0, width - 1, height - 1);
+
+        final Random random = new Random();
+        // 随机产生干扰线，使图象中的认证码不易被其它程序探测到
+        for (int i = 0; i < count; i++) {
+            graphics.setColor(getRandColor(150, 200)); // ---3
+
+            final int x = random.nextInt(width - lineWidth - 1) + 1; // 保证画在边框之内
+            final int y = random.nextInt(height - lineWidth - 1) + 1;
+            final int xl = random.nextInt(lineWidth);
+            final int yl = random.nextInt(lineWidth);
+            graphics.drawLine(x, y, x + xl, y + yl);
+        }
+        // 取随机产生的认证码
+        for (int i = 0; i < resultCode.length(); i++) {
+            // 将认证码显示到图象中,调用函数出来的颜色相同，可能是因为种子太接近，所以只能直接生成
+            // graphics.setColor(new Color(20 + random.nextInt(130), 20 + random
+            // .nextInt(130), 20 + random.nextInt(130)));
+            // 设置字体颜色
+            graphics.setColor(Color.BLACK);
+            // 设置字体样式
+//			graphics.setFont(new Font("Arial Black", Font.ITALIC, 18));
+            graphics.setFont(new Font("Times New Roman", Font.BOLD, 24));
+            // 设置字符，字符间距，上边距
+            graphics.drawString(String.valueOf(resultCode.charAt(i)), (23 * i) + 8, 26);
+        }
+        // 图象生效
+        graphics.dispose();
+        return image;
+    }
+
+    private static Color getRandColor(int fc, int bc) { // 取得给定范围随机颜色
+        final Random random = new Random();
+        if (fc > 255) {
+            fc = 255;
+        }
+        if (bc > 255) {
+            bc = 255;
+        }
+
+        final int r = fc + random.nextInt(bc - fc);
+        final int g = fc + random.nextInt(bc - fc);
+        final int b = fc + random.nextInt(bc - fc);
+
+        return new Color(r, g, b);
+    }
+}