这篇文章将为大家详细讲解有关vue+spring boot如何实现校验码功能,小编觉得挺实用的,因此分享给大家做个参考,希望大家阅读完这篇文章后可以有所收获。
用vue写了一个校验码来玩玩,样子如下:
1.img标签
<img ="height:40px; width: 100px; cursor: pointer;" ref="imgIdentifyingCode" :src="selectedLogoPicture.imgUrl" class="logoImg" >
2.js代码
/** * 获取校验码 */ getIdentifyingCode() { let selft = this; //let pic = this.$refs.imgIdentifyingCode selft.loadingChack = true; let uuid = Utils.getUuid(32, 16); this.$store.state.uuid = uuid; this.$api.reader.getVerify( { responseType: "arraybuffer", uuid: uuid }, r => { selft.loadingChack = false; selft.selectedLogoPicture.imgUrl = "data:image/png;base64," + r; } ); },
3.controller
@RequestMapping("/getVerify") public void getVerify(@RequestParam String uuid, HttpServletRequest request, HttpServletResponse response) { response.setContentType("image/jpeg");// 设置相应类型,告诉浏览器输出的内容为图片 response.setHeader("Pragma", "No-cache");// 设置响应头信息,告诉浏览器不要缓存此内容 response.setHeader("Cache-Control", "no-cache"); response.setDateHeader("Expire", 0); userService.getRandcodedDawTransparent(uuid, request, response);// 输出验证码图片方法 }
4.service
@Override public void getRandcodedDawTransparent(String uuid, HttpServletRequest request, HttpServletResponse response) { try { Map<String, Object> map = CodeUtil.getRandcodedDawTransparent(); // 将生成的随机字符串保存到session中 log.info("==保存的uuid:"+uuid); log.info("==保存的code:"+map.get("code")); sessionUtil.saveCode(uuid, map.get("code")); response.setContentType("image/png"); OutputStream out = response.getOutputStream(); out.write((byte[]) map.get("img")); out.flush(); out.close(); } catch (IOException e) { log.error(e.getMessage()); } }
5.util
public static Map<String, Object> getRandcodedDawTransparent() throws IOException { Map<String, Object> rsMap = new HashMap<>(); // 创建BufferedImage对象 BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); // 获取Graphics2D Graphics2D g2d = image.createGraphics(); // 增加下面代码使得背景透明 image = g2d.getDeviceConfiguration().createCompatibleImage(width, height, Transparency.TRANSLUCENT); g2d.dispose(); g2d = image.createGraphics(); g2d.setFont(new Font("Times New Roman", Font.ROMAN_BASELINE, 18));// 字体大小 g2d.setColor(getRandColor(110, 133));// 字体颜色 // 绘制干扰线 for (int i = 0; i <= lineSize; i++) { drowLine(g2d, width, height); } // 绘制随机字符 String randomString = ""; for (int i = 1; i <= stringNum; i++) { randomString = drowString(g2d, randomString, i); } log.info(randomString); rsMap.put("code", randomString); g2d.dispose(); ByteArrayOutputStream baos = new ByteArrayOutputStream();// io流 ImageIO.write(image, "png", baos);// 写入流中 byte[] bytes = baos.toByteArray();// 转换成字节 bytes = Base64.encodeBase64(bytes); rsMap.put("img", bytes); return rsMap; }
关于“vue+spring boot如何实现校验码功能”这篇文章就分享到这里了,希望以上内容可以对大家有一定的帮助,使各位可以学到更多知识,如果觉得文章不错,请把它分享出去让更多的人看到。
免责声明:本站发布的内容(图片、视频和文字)以原创、转载和分享为主,文章观点不代表本网站立场,如果涉及侵权请联系站长邮箱:is@yisu.com进行举报,并提供相关证据,一经查实,将立刻删除涉嫌侵权内容。