java 邮件发送

 java中，发送邮件可以使用 commons-email.jar

首先我们需要找到对应的jar，可以手动下载，或者直接maven；

maven地址如下：

 <!-- https://mvnrepository.com/artifact/org.apache.commons/commons-email -->
 <dependency>
     <groupId>org.apache.commons</groupId>
     <artifactId>commons-email</artifactId>
     <version>1.5</version>
 </dependency>

 测试例子：

import org.apache.commons.mail.DefaultAuthenticator;
import org.apache.commons.mail.EmailException;
import org.apache.commons.mail.HtmlEmail;

public class EmailTest {
    public static void main(String[] args) {
        String htmlContent = "你好！<br/>你的验证码为：<span style='font-size: 20px;color: #009688'> 54ZSD25 </span>（10分钟内有效）<br/>";

        EmailP email = new EmailP();
        email.setHostName("smtp.aliyun.com");
        email.setUserName("用户名");
        email.setUserPwd("密码");
        email.setNickName("发送者昵称");
        email.setToEmail("接受者邮箱");
        email.setTitle("邮箱标题");
        email.setHtmlContent(htmlContent);

        System.out.println(sendHtmlEmail(email));
    }

    /**
     * <p> 方法描述：发送html邮件. </p>
     * <p> 创建时间：2017-12-15 11:32:18 </p>
     * <p> 创建作者：lixingwu </p>
     *
     * @return 发送成功返回
     * @author "lixingwu"
     */
    public static String sendHtmlEmail(EmailP emailP) {
        HtmlEmail email = new HtmlEmail();
        String result = "";

        try {
            email.setTLS(true);
            email.setDebug(false);
            email.setSSL(true);
            email.setHostName(emailP.getHostName());
            email.setAuthenticator(new DefaultAuthenticator(emailP.getUserName(), emailP.getUserPwd()));
            email.setFrom(emailP.getUserName(), emailP.getNickName());
            email.addTo(emailP.getToEmail());
            email.setCharset("UTF-8");
            email.setSubject(emailP.getTitle());
            email.setHtmlMsg(emailP.getHtmlContent());
            result = email.send();
        } catch (EmailException e) {
            result = "";
            e.printStackTrace();
        }
        return result;
    }

    static class EmailP {
        private String hostName;
        private String userName;
        private String nickName;
        private String userPwd;
        private String toEmail;
        private String title;
        private String htmlContent;

        public String getHostName() {
            return hostName;
        }

        public void setHostName(String hostName) {
            this.hostName = hostName;
        }

        public String getUserName() {
            return userName;
        }

        public void setUserName(String userName) {
            this.userName = userName;
        }

        public String getNickName() {
            return nickName;
        }

        public void setNickName(String nickName) {
            this.nickName = nickName;
        }

        public String getUserPwd() {
            return userPwd;
        }

        public void setUserPwd(String userPwd) {
            this.userPwd = userPwd;
        }

        public String getToEmail() {
            return toEmail;
        }

        public void setToEmail(String toEmail) {
            this.toEmail = toEmail;
        }

        public String getTitle() {
            return title;
        }

        public void setTitle(String title) {
            this.title = title;
        }

        public String getHtmlContent() {
            return htmlContent;
        }

        public void setHtmlContent(String htmlContent) {
            this.htmlContent = htmlContent;
        }
    }
}