驗(yàn)證碼,相信大家對它可謂是不陌生。現(xiàn)在有的登錄需要驗(yàn)證碼、注冊也需要驗(yàn)證碼、綁定手機(jī)號也要驗(yàn)證碼等等。下面我將基于OAuth2.0,用Java實(shí)現(xiàn)授權(quán)系統(tǒng)驗(yàn)證碼的功能。
正文:
這套系統(tǒng)授權(quán)基于OAuth2.0實(shí)現(xiàn),登錄的是http://xxxx/oauth/token獲取access_token。調(diào)用其他接口時(shí),帶上access_token進(jìn)行權(quán)限認(rèn)證。所以我要想加驗(yàn)證碼,需要把驗(yàn)證碼值放到http://xxxx/oauth/token鏈接上傳到服務(wù)器進(jìn)行驗(yàn)證。又因?yàn)槲沂褂昧薢uul網(wǎng)關(guān),作為網(wǎng)站的入口。我選擇在使用Zuul網(wǎng)關(guān)的Filter過濾器進(jìn)行校驗(yàn)驗(yàn)證碼。
驗(yàn)證碼我使用的是EasyCaptcha,git地址如下:https://gitee.com/whvse/EasyCaptcha。為了快速校驗(yàn)驗(yàn)證信息,我把驗(yàn)證碼的值緩存到Redis中,具有代碼實(shí)現(xiàn)如下:
1.集成EasyCaptcha:
<dependencies>
<dependency>
<groupId>com.github.whvcse</groupId>
<artifactId>easy-captcha</artifactId>
<version>1.6.2</version>
</dependency>
</dependencies>
2.生成驗(yàn)證碼并保存到Redis中:
/**
* 驗(yàn)證碼
*
* @return
*/
@GetMapping("/captcha")
public Result captcha() {
String captchaKey = "captcha_" + UUID.randomUUID();
// 三個(gè)參數(shù)分別為寬、高、位數(shù)
SpecCaptcha captcha = new SpecCaptcha(130, 60, 4);
// 設(shè)置字體 有默認(rèn)字體,可以不用設(shè)置
captcha.setFont(new Font("Verdana", Font.PLAIN, 32));
// 設(shè)置類型,純數(shù)字、純字母、字母數(shù)字混合
captcha.setCharType(Captcha.TYPE_ONLY_NUMBER);
log.info("key: [{}] ,code: [{}]", captchaKey, captcha.text());
// 存入Redis ,默認(rèn)兩分鐘
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);
}
3. 校驗(yàn)驗(yàn)證碼的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;
/**
* 〈一句話功能簡述〉<br>
* 〈驗(yàn)證碼過濾器〉
*
* @author hanxinghua
* @create 2021/4/4
* @since 1.0.0
*/
@Slf4j
@Component
public 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();
// 處理跨域Post發(fā)送兩次請求
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:
[{}]", responseBody);
currentContext.setResponseBody(responseBody);
}
}
}
return null;
}
}
4.使用,這里使用《Idea中HTTP Client請求測試工具》:
4.1 獲取驗(yàn)證碼:
GET http://localhost/api/system/captcha
4.2 校驗(yàn)驗(yàn)證碼:
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:
過期返回如下:
錯(cuò)誤返回如下:
以上就是關(guān)于使用 Java 實(shí)現(xiàn)基于 OAuth2.0 授權(quán)系統(tǒng)的驗(yàn)證碼功能的實(shí)現(xiàn)的詳細(xì)內(nèi)容,更多關(guān)于 OAuth2.0 授權(quán)系統(tǒng)驗(yàn)證碼的資料請關(guān)注W3Cschool其它相關(guān)文章!也希望大家能夠多多地支持我們!