使用Hutool发送邮件、生成二维码、验证码

╰+攻爆jí腚メ 2023-10-11 17:04 51阅读 0赞

Hutool是一个Java工具包类库，对文件、流、加密解密、转码、正则、线程、XML等JDK方法进行封装，组成各种Util工具类。

## 1.生成二维码 ##

首先需要引入hutool依赖，以及使用比较广泛的二维码工具类zxing。如下：

<dependency>
                <groupId>cn.hutool</groupId>
                <artifactId>hutool-all</artifactId>
                <version>5.7.21</version>
            </dependency>
            <dependency>
                <groupId>com.google.zxing</groupId>
                <artifactId>core</artifactId>
                <version>3.4.1</version>
            </dependency>

### 1.1 生成普通的二维码 ###

import cn.hutool.core.io.FileUtil;
    import cn.hutool.extra.qrcode.QrCodeUtil;
    import cn.hutool.extra.qrcode.QrConfig;
    import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
    
    public class QrCodeUtils {
        
        /**
         * 生成普通类型的二维码
         */
        public static void generateGeneralQrCode() {
        
            QrCodeUtil.generate("http://www.baidu.com/",
                    500, 500,
                    FileUtil.file("C:\\Users\\NineSun\\Desktop\\1\\QRCODE1.jpg"));
    
        }
    
        public static void main(String[] args) {
        
           generateGeneralQrCode();
        }
    }

效果如下：  
![在这里插入图片描述][watermark_type_d3F5LXplbmhlaQ_shadow_50_text_Q1NETiBAWk5pbmVTdW4_size_17_color_FFFFFF_t_70_g_se_x_16_pic_center]

### 1.2 生成含有背景图片的二维码 ###

package com.example.hutool.utils;
    
    import cn.hutool.core.io.FileUtil;
    import cn.hutool.extra.qrcode.QrCodeUtil;
    import cn.hutool.extra.qrcode.QrConfig;
    import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
    
    public class QrCodeUtils {
        
    
        /**
         * 生成含有背景图片的二维码
         */
        public static void generateGeneralQrCodeWithBgImg() {
        
            QrConfig config = new QrConfig(500, 500);
            config.setImg("C:\\Users\\NineSun\\Desktop\\1\\azmqf-2qgaq.png");
            config.setErrorCorrection(ErrorCorrectionLevel.Q);
            QrCodeUtil.generate("https://www.baidu.com/", config, FileUtil.file("C:\\Users\\NineSun\\Desktop\\1\\QRCODE2.jpg"));
    
        }
    
        public static void main(String[] args) {
        
            generateGeneralQrCodeWithBgImg();
        }
    }

效果如下：  
![在这里插入图片描述][watermark_type_d3F5LXplbmhlaQ_shadow_50_text_Q1NETiBAWk5pbmVTdW4_size_17_color_FFFFFF_t_70_g_se_x_16_pic_center 1]

### 1.3 识别二维码的内容 ###

package com.example.hutool.utils;
    
    import cn.hutool.core.io.FileUtil;
    import cn.hutool.core.lang.Console;
    import cn.hutool.extra.qrcode.QrCodeUtil;
    import cn.hutool.extra.qrcode.QrConfig;
    import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
    
    public class QrCodeUtils {
        
    
        public static void decodeQrCode() {
        
            String decode = QrCodeUtil.decode(FileUtil.file("C:\\Users\\NineSun\\Desktop\\1\\QRCODE1.jpg"));
            System.out.println(decode);
        }
    
        public static void main(String[] args) {
        
            decodeQrCode();
        }
    }

![在这里插入图片描述][watermark_type_d3F5LXplbmhlaQ_shadow_50_text_Q1NETiBAWk5pbmVTdW4_size_20_color_FFFFFF_t_70_g_se_x_16_pic_center]

## 2.生成验证码 ##

### 2.1 生成普通类型的验证码 ###

import cn.hutool.captcha.CaptchaUtil;
    
    /**
     * 验证码工具类
     */
    public class VerificationCodeUtils {
        
        /**
         * 生成普通类型的验证码
         */
        public static void generateGeneralVerificationCode() {
        
            /**参数分别是宽、高、验证码个数，横线干扰个数**/
            CaptchaUtil.createLineCaptcha(300, 100, 6, 100)
                    .write("C:\\Users\\NineSun\\Desktop\\1\\lineCaptcha1.png");
    
        }
    
        public static void main(String[] args) {
        
            generateGeneralVerificationCode();
        }
    }

效果如下：  
![在这里插入图片描述][de400d629afd485a9c6b4ed01645a220.png_pic_center]

### 2.2 自定义验证码生成规则 ###

import cn.hutool.captcha.CaptchaUtil;
    import cn.hutool.captcha.LineCaptcha;
    import cn.hutool.captcha.generator.RandomGenerator;
    
    /**
     * 验证码工具类
     */
    public class VerificationCodeUtils {
        
    
        /**
         * 生成自定义规则的验证码
         */
        public static void generateCustomVerificationCode() {
        
            /**参数分别是宽、高、验证码个数，横线干扰个数**/
            LineCaptcha lineCaptcha = CaptchaUtil.createLineCaptcha(300, 100, 6, 100);
            /**只会在0-9中产生验证码的内容，内容个数为6**/
            RandomGenerator randomGenerator = new RandomGenerator("0123456789", 6);
            lineCaptcha.setGenerator(randomGenerator);
            String lineCaptchaCode = lineCaptcha.getCode();
            System.out.println(lineCaptchaCode);
            lineCaptcha.write("C:\\Users\\NineSun\\Desktop\\1\\lineCaptcha.png");
    
        }
    
        public static void main(String[] args) {
        
            generateCustomVerificationCode();
        }
    }

效果如下：  
![在这里插入图片描述][98565930a336456389fe64dad4c7a01a.png_pic_center]

### 2.3 生成gif格式的验证码 ###

package com.example.hutool.utils;
    
    import cn.hutool.captcha.CaptchaUtil;
    import cn.hutool.captcha.GifCaptcha;
    import cn.hutool.captcha.LineCaptcha;
    import cn.hutool.captcha.generator.RandomGenerator;
    
    /**
     * 验证码工具类
     */
    public class VerificationCodeUtils {
        
        /**
         * 生成gif类型的验证码
         */
        public static void generateGifVerificationCode() {
        
            /**参数分别是宽、高、验证码个数**/
            GifCaptcha gifCaptcha = CaptchaUtil.createGifCaptcha(500, 200, 8);
            gifCaptcha.write("C:\\Users\\NineSun\\Desktop\\1\\gifCaptcha.gif");
            String gifCaptchaCode = gifCaptcha.getCode();
            System.out.println(gifCaptchaCode);
    
        }
    
        public static void main(String[] args) {
        
            generateGifVerificationCode();
        }
    }

![在这里插入图片描述][0404f3ef9c434cc5aa3b3bb586fdae60.gif_pic_center]

### 2.4 扭曲防蓝光验证码 ###

package com.example.hutool.utils;
    
    import cn.hutool.captcha.CaptchaUtil;
    import cn.hutool.captcha.GifCaptcha;
    import cn.hutool.captcha.LineCaptcha;
    import cn.hutool.captcha.ShearCaptcha;
    import cn.hutool.captcha.generator.RandomGenerator;
    
    /**
     * 验证码工具类
     */
    public class VerificationCodeUtils {
        
    
        /**
         * 生成扭曲防蓝光类型的验证码
         */
        public static void generateShearVerificationCode() {
        
            /**参数分别是宽、高、验证码个数、扭曲程度**/
            ShearCaptcha shearCaptcha = CaptchaUtil.createShearCaptcha(500, 200, 6, 20);
            shearCaptcha.write("C:\\Users\\NineSun\\Desktop\\1\\shearCaptcha.png");
            System.out.println(shearCaptcha.getCode());
    
        }
    
        public static void main(String[] args) {
        
            generateShearVerificationCode();
        }
    }

![在这里插入图片描述][watermark_type_d3F5LXplbmhlaQ_shadow_50_text_Q1NETiBAWk5pbmVTdW4_size_17_color_FFFFFF_t_70_g_se_x_16_pic_center 2]

## 3.发送邮件 ##

引入依赖

<dependency>
        <groupId>com.sun.mail</groupId>
        <artifactId>javax.mail</artifactId>
        <version>1.6.2</version>
    </dependency>

### 3.1 发送普通邮件 ###

import cn.hutool.core.collection.CollUtil;
    import cn.hutool.extra.mail.Mail;
    import cn.hutool.extra.mail.MailAccount;
    import cn.hutool.extra.mail.MailUtil;
    
    import java.util.ArrayList;
    
    /**
     * 邮件
     */
    public class EmailUtils {
        
        private static final String HOST = "smtp.qq.com";//邮件服务器的SMTP地址，可选，默认为smtp.<发件人邮箱后缀>
        private static final int PORT = 25;// 邮件服务器的SMTP端口，可选，默认25
        private static final String FROM = "xxxx@qq.com";//发件人（必须正确，否则发送失败）
        private static final String USER = "ninesun";//用户名，默认为发件人邮箱前缀
        private static final String PASS = "xxxxxxxxxx";//密码（注意，某些邮箱需要为SMTP服务单独设置授权码)
    
        public static MailAccount getMailCount() {
        
            MailAccount account = new MailAccount();
            account.setHost(HOST);
            account.setPort(PORT);
            account.setAuth(true);
            account.setFrom(FROM);
            account.setUser(USER);
            account.setPass(PASS);
            return account;
        }
    
        /**
         * 发送普通邮件
         */
        public static void sendNormalEmail() {
        
            MailAccount account = getMailCount();
            ArrayList<String> mailList = CollUtil.newArrayList(
                    "xxxxx@qq.com");
            MailUtil.send(account, mailList, "Mail Test",
                    "<h1> Html Mail Test</h1>", true);
        }
    
        public static void main(String[] args) {
        
            sendNormalEmail();
        }
    }

注意：我使用的是qq邮箱，所以HOST = “smtp.qq.com”，同时请确保你开启了SMTP服务，[参考文章第2.2节开启此项服务][2.2]

### 3.2 发送含有附件的邮件 ###

import cn.hutool.core.collection.CollUtil;
    import cn.hutool.core.io.FileUtil;
    import cn.hutool.extra.mail.Mail;
    import cn.hutool.extra.mail.MailAccount;
    import cn.hutool.extra.mail.MailUtil;
    
    import java.util.ArrayList;
    
    /**
     * 邮件
     */
    public class EmailUtils {
        
        private static final String HOST = "smtp.qq.com";//邮件服务器的SMTP地址，可选，默认为smtp.<发件人邮箱后缀>
        private static final int PORT = 25;// 邮件服务器的SMTP端口，可选，默认25
        private static final String FROM = "xxxx@qq.com";//发件人（必须正确，否则发送失败）
        private static final String USER = "ninesun";//用户名，默认为发件人邮箱前缀
        private static final String PASS = "xxxxxxxxxx";//密码（注意，某些邮箱需要为SMTP服务单独设置授权码)
    
        public static MailAccount getMailCount() {
        
            MailAccount account = new MailAccount();
            account.setHost(HOST);
            account.setPort(PORT);
            account.setAuth(true);
            account.setFrom(FROM);
            account.setUser(USER);
            account.setPass(PASS);
            return account;
        }
    
        /**
         * 发送含有附件的邮件
         */
        public static void sendEnclosureEmail() {
        
            MailAccount account = getMailCount();
            ArrayList<String> mailList = CollUtil.newArrayList(
                    "zhiyitec@qq.com");
            MailUtil.send(account, mailList, " Mail Test",
                    "<h1> Html Mail Test</h1>", true,
                    FileUtil.file("testOpenLeagueoflegends1.pdf"),
                    FileUtil.file("gifCaptcha.gif"));
        }
    
        public static void main(String[] args) {
        
            sendEnclosureEmail();
        }
    }

至此本文内容就结束啦，欢迎下方留下宝贵的意见  
[点击此处访问项目地址][Link 1]

[watermark_type_d3F5LXplbmhlaQ_shadow_50_text_Q1NETiBAWk5pbmVTdW4_size_17_color_FFFFFF_t_70_g_se_x_16_pic_center]: https://img-blog.csdnimg.cn/b440b6223d1b4382aad77456aeb9567f.png?x-oss-process=image/watermark,type_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBAWk5pbmVTdW4=,size_17,color_FFFFFF,t_70,g_se,x_16#pic_center
[watermark_type_d3F5LXplbmhlaQ_shadow_50_text_Q1NETiBAWk5pbmVTdW4_size_17_color_FFFFFF_t_70_g_se_x_16_pic_center 1]: https://img-blog.csdnimg.cn/54c7543ebbdc45528f02b0b08dbf1600.png?x-oss-process=image/watermark,type_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBAWk5pbmVTdW4=,size_17,color_FFFFFF,t_70,g_se,x_16#pic_center
[watermark_type_d3F5LXplbmhlaQ_shadow_50_text_Q1NETiBAWk5pbmVTdW4_size_20_color_FFFFFF_t_70_g_se_x_16_pic_center]: https://img-blog.csdnimg.cn/f88452f0c31f452b9735ac8289ebe27a.png?x-oss-process=image/watermark,type_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBAWk5pbmVTdW4=,size_20,color_FFFFFF,t_70,g_se,x_16#pic_center
[de400d629afd485a9c6b4ed01645a220.png_pic_center]: https://img-blog.csdnimg.cn/de400d629afd485a9c6b4ed01645a220.png#pic_center
[98565930a336456389fe64dad4c7a01a.png_pic_center]: https://img-blog.csdnimg.cn/98565930a336456389fe64dad4c7a01a.png#pic_center
[0404f3ef9c434cc5aa3b3bb586fdae60.gif_pic_center]: https://img-blog.csdnimg.cn/0404f3ef9c434cc5aa3b3bb586fdae60.gif#pic_center
[watermark_type_d3F5LXplbmhlaQ_shadow_50_text_Q1NETiBAWk5pbmVTdW4_size_17_color_FFFFFF_t_70_g_se_x_16_pic_center 2]: https://img-blog.csdnimg.cn/7bd251bbba6c4e91839a0fb8f0aca219.png?x-oss-process=image/watermark,type_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBAWk5pbmVTdW4=,size_17,color_FFFFFF,t_70,g_se,x_16#pic_center
[2.2]: https://blog.csdn.net/zhiyikeji/article/details/104134229?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522164491028416781683992471%2522%252C%2522scm%2522%253A%252220140713.130102334.pc%255Fblog.%2522%257D&request_id=164491028416781683992471&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~blog~first_rank_ecpm_v1~rank_v31_ecpm-2-104134229.nonecase&utm_term=%E9%82%AE%E7%AE%B1&spm=1018.2226.3001.4450
[Link 1]: https://gitee.com/ninesuntec/hutool#22-%E8%87%AA%E5%AE%9A%E4%B9%89%E9%AA%8C%E8%AF%81%E7%A0%81%E7%94%9F%E6%88%90%E8%A7%84%E5%88%99