这篇文章主要介绍了如何实现OAuth2.0授权系统的验证码功能,具有一定借鉴价值,感兴趣的朋友可以参考下,希望大家阅读完这篇文章之后大有收获,下面让小编带着大家一起了解一下。
正文:
我这套系统授权基于OAuth3.0实现,登录的是http://xxxx/oauth/token获取access_token。调用其他接口时,带上access_token进行权限认证。所以我要想加验证码,需要把验证码值放到http://xxxx/oauth/token链接上传到服务器进行验证。又因为我使用了Zuul网关,作为网站的入口。我选择在使用Zuul网关的Filter过滤器进行校验验证码。
验证码我使用的是EasyCaptcha,git地址如下:https://gitee.com/whvse/EasyCaptcha。为了快速校验验证信息,我把验证码的值缓存到Redis中,具有代码实现如下:
集成EasyCaptcha:
<dependencies> <dependency> <groupId>com.github.whvcse</groupId> <artifactId>easy-captcha</artifactId> <version>1.6.2</version> </dependency></dependencies>
生成验证码并保存到Redis中:
@GetMapping("/captcha") public Result captcha() { String captchaKey = "captcha_" + UUID.randomUUID(); // 三个参数分别为宽、高、位数 SpecCaptcha captcha = new SpecCaptcha(130, 60, 4); // 设置字体 有默认字体,可以不用设置 captcha.setFont(new Font("Verdana", Font.PLAIN, 32)); // 设置类型,纯数字、纯字母、字母数字混合 captcha.setCharType(Captcha.TYPE_ONLY_NUMBER); log.info("key: [{}] ,code: [{}]", captchaKey, captcha.text()); // 存入Redis ,默认两分钟 redisBaseUtil.set(captchaKey, captcha.text(), 2, TimeUnit.MINUTES); Map<String, Object> map = new HashMap<>(4); map.put("captchaKey", captchaKey); map.put("image", captcha.toBase64()); return Result.success(map); }
校验验证码的Filter:
package com.hanxiaozhang.filter; import com.hanxiaozhang.constant.Constant;import com.hanxiaozhang.redis.util.RedisUtil;import com.hanxiaozhang.result.ResultCode;import com.hanxiaozhang.result.Result;import com.hanxiaozhang.util.JsonUtil;import com.netflix.zuul.ZuulFilter;import com.netflix.zuul.context.RequestContext;import lombok.extern.slf4j.Slf4j;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.cloud.netflix.zuul.filters.support.FilterConstants;import org.springframework.stereotype.Component; import javax.servlet.http.HttpServletRequest;import java.util.Map; @Slf4j@Componentpublic class CaptchaFilter extends ZuulFilter { @Autowired private RedisUtil redisBaseUtil; @Override public String filterType() { return FilterConstants.PRE_TYPE; } @Override public int filterOrder() { return 0; } @Override public boolean shouldFilter() { return true; } @Override public Object run() { RequestContext currentContext = RequestContext.getCurrentContext(); HttpServletRequest serverHttpRequest = currentContext.getRequest(); String uri = serverHttpRequest.getRequestURI(); if (uri.contains("/oauth/token")) { String method = serverHttpRequest.getMethod(); // 处理跨域Post发送两次请求 if (Constant.OPTIONS.equals(method)) { return null; } Map<String, String[]> parameterMap = serverHttpRequest.getParameterMap(); String[] captchaKeys = null, captchaCodes = null; if (!parameterMap.isEmpty() && (captchaKeys = parameterMap.get("captcha_key")) != null && (captchaCodes = parameterMap.get("captcha_code")) != null) { String captchaKey = captchaKeys[0]; String captchaCode = captchaCodes[0]; log.info("Request Captcha Parameters: key: [{}] ,code: [{}]", captchaKey, captchaCode); String redisCaptchaCode = redisBaseUtil.get(captchaKey); String responseBody = null; if (redisCaptchaCode == null) { responseBody = JsonUtil.beanToJson(Result.error(ResultCode.LOGIN_CAPTCHA_EXPIRE)); } else if (!captchaCode.trim().equalsIgnoreCase(redisCaptchaCode)) { responseBody = JsonUtil.beanToJson(Result.error(ResultCode.LOGIN_CAPTCHA_ERROR)); } if (responseBody != null) { currentContext.setSendZuulResponse(false); currentContext.setResponseStatusCode(200); currentContext.getResponse().setContentType(Constant.APP_JSON_UTF_8); log.info("Response Parameters: \n [{}]", responseBody); currentContext.setResponseBody(responseBody); } } } return null; }}
4.使用,这里使用《Idea中HTTP Client请求测试工具》:
1 获取验证码:
GET http://localhost/api/system/captcha
2 校验验证码:
POST http://localhost/api/system/oauth/token?username={{username}}&password={{password}}&grant_type=password&scope={{scope}}&client_id={{client_id}}&client_secret={{client_secret}}&captcha_key=captcha_23cacfe5-2751-44af-a34d-5e795caeb46a&captcha_code=5594
成功返回如下:
过期返回如下:
错误返回如下:
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