springboot 使用qrcode-plugin 超简单生成二维码

第一步: 引入坐标

        <dependency>
            <groupId>com.github.liuyueyi.media</groupId>
            <artifactId>qrcode-plugin</artifactId>
            <version>2.6.3</version>
        </dependency>

第二步:编写测试类

import com.github.hui.quick.plugin.qrcode.wrapper.QrCodeGenWrapper;
import com.github.hui.quick.plugin.qrcode.wrapper.QrCodeOptions;

/**
 * TODO
 *
 * @author Csy
 * @version 1.0
 * @date 2021/12/17 13:15
 */
public class Test {

    public static void main(String[] args) {
    	//二维码内容
        String msg = "https://www.baidu.com/";
        //这是你的二维码中间的Logo图片本地地址
        String logo = "C:\\Users\\admin\\Desktop\\Snipaste_2021-12-29_10-28-18.png";
        try {
            boolean ans = QrCodeGenWrapper.of(msg)
                    .setW(400)
                    .setLogo(logo)
                    // 圆形logo支持
                    .setLogoStyle(QrCodeOptions.LogoStyle.CIRCLE)
                    .setLogoBgColor(0xfffefefe)
                    .setLogoBorderBgColor(0xffc7c7c7)
                    .setLogoBorder(true)
                    //输出地址你项目test目录下
                    .asFile("src/test/qrcode/gen.png");
            System.out.println(ans);
        } catch (Exception e) {
            System.out.println("create qrcode error! e: " + e);
        }
    }

}

就是这么简单

这是qrcode-plugin官方文档,超多二维码样式

https://liuyueyi.github.io/quick-media/#/%E6%8F%92%E4%BB%B6/%E4%BA%8C%E7%BB%B4%E7%A0%81/%E4%BA%8C%E7%BB%B4%E7%A0%81%E6%8F%92%E4%BB%B6%E4%BD%BF%E7%94%A8%E6%89%8B%E5%86%8C
要实现第三方qq登录,可以使用QQ互联提供的开放平台接口。具体的步骤如下: 1. 注册成为QQ互联开发者,并创建应用。在创建应用时,需要填写应用的基本信息,并获得AppID和AppKey。 2. 在Spring Boot后端项目中,使用Spring Security实现OAuth2认证。在pom.xml文件中添加以下依赖: ```xml <dependency> <groupId>org.springframework.security</groupId> <artifactId>spring-security-oauth2-client</artifactId> <version>5.3.4.RELEASE</version> </dependency> ``` 3. 在前端Vue项目中,使用Vue CLI创建项目,并安装vue-cli-plugin-qrcode实现生成二维码。在Terminal中运行以下命令: ``` vue create qq-login-demo cd qq-login-demo vue add qrcode ``` 4. 在Spring Boot后端项目中,实现OAuth2的配置。在application.yml文件中添加以下配置: ```yaml spring: security: oauth2: client: registration: qq: clientId: <your app id> clientSecret: <your app key> redirectUriTemplate: "{baseUrl}/login/oauth2/code/{registrationId}" authorizationUri: https://graph.qq.com/oauth2.0/authorize tokenUri: https://graph.qq.com/oauth2.0/token userInfoUri: https://graph.qq.com/user/get_user_info scope: - get_user_info provider: qq: authorizationUri: https://graph.qq.com/oauth2.0/authorize tokenUri: https://graph.qq.com/oauth2.0/token userInfoUri: https://graph.qq.com/user/get_user_info?oauth_consumer_key={clientId}&openid={oauthId} userNameAttribute: nickname ``` 5. 在前端Vue项目中,实现二维码生成。在App.vue文件中添加以下代码: ```vue <template> <div id="app"> <div v-if="!isLogin"> <qrcode :value="qrCodeUrl"></qrcode> </div> <div v-else> <p>{{ userInfo.nickname }}</p> <img :src="userInfo.figureurl_qq_1" alt="头像"> </div> </div> </template> <script> import QRCode from 'qrcode' export default { name: 'App', data() { return { isLogin: false, qrCodeUrl: '' } }, mounted() { this.generateQRCode() }, methods: { async generateQRCode() { const response = await this.$http.get('/qq-login/qr-code') if (response.status === 200) { this.qrCodeUrl = response.data this.isLogin = false } }, async checkLoginStatus() { const response = await this.$http.get('/qq-login/check-login-status') if (response.status === 200) { this.userInfo = response.data this.isLogin = true } } } } </script> ``` 6. 在Spring Boot后端项目中,实现二维码生成和登录状态检查。在QqLoginController.java文件中添加以下代码: ```java @RestController @RequestMapping("/qq-login") public class QqLoginController { private final OAuth2AuthorizedClientService authorizedClientService; private final RestTemplate restTemplate; @Autowired public QqLoginController(OAuth2AuthorizedClientService authorizedClientService, RestTemplate restTemplate) { this.authorizedClientService = authorizedClientService; this.restTemplate = restTemplate; } @GetMapping("/qr-code") public String generateQRCode() { String qrCodeUrl = "https://graph.qq.com/oauth2.0/show?which=Login&display=pc&response_type=code&client_id=<your app id>&redirect_uri=http://localhost:8080/login&state=<random state>"; try { qrCodeUrl = QRCode.from(qrCodeUrl).to(ImageType.PNG).withSize(250, 250).stream().collect(Collectors.toBase64String); } catch (WriterException | IOException e) { e.printStackTrace(); } return "data:image/png;base64," + qrCodeUrl; } @GetMapping("/check-login-status") public Map<String, Object> checkLoginStatus() { OAuth2AuthenticationToken authenticationToken = (OAuth2AuthenticationToken) SecurityContextHolder.getContext().getAuthentication(); OAuth2AuthorizedClient authorizedClient = authorizedClientService.loadAuthorizedClient(authenticationToken.getAuthorizedClientRegistrationId(), authenticationToken.getName()); String accessToken = authorizedClient.getAccessToken().getTokenValue(); String openId = restTemplate.getForObject("https://graph.qq.com/oauth2.0/me?access_token=" + accessToken, String.class); openId = StringUtils.substringBetween(openId, "\"openid\":\"", "\"}"); Map<String, Object> userInfo = restTemplate.getForObject("https://graph.qq.com/user/get_user_info?access_token=" + accessToken + "&oauth_consumer_key=<your app id>&openid=" + openId, Map.class); return userInfo; } } ``` 7. 在前端Vue项目中,实现登录状态检查。在App.vue文件中添加以下代码: ```vue <script> export default { name: 'App', data() { return { isLogin: false, qrCodeUrl: '' } }, mounted() { this.generateQRCode() this.checkLoginStatus() setInterval(() => { this.checkLoginStatus() }, 3000) }, methods: { async checkLoginStatus() { const response = await this.$http.get('/qq-login/check-login-status') if (response.status === 200) { this.userInfo = response.data this.isLogin = true } } } } </script> ``` 至此,我们就成功地实现了Spring Boot+Vue代码实现第三方QQ登录的功能。
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