java 发送 mail 纯文本发送和html格式发送

一：需要引入mail maven jar包

 <!--邮件发送包-->
    <dependency>
      <groupId>javax.mail</groupId>
      <artifactId>mail</artifactId>
      <version>1.4.7</version>
    </dependency>

二：代码示例

2.1 定义消息实体类

package textAnalysis.dto;

/**
 * Created by 草帽boy on 2016/12/8.
 */

public class MailInfo {
    //邮箱服务器 如smtp.163.com
    private String host ;
    //用户邮箱 如**@163
    private String formName ;
    //用户授权码 不是用户名密码 可以自行查看相关邮件服务器怎么查看
    private String formPassword ;
    //消息回复邮箱
    private String replayAddress ;
    //发送地址
    private String toAddress ;
    //发送主题
    private String subject ;
    //发送内容
    private String content ;

    public String getHost() {
        return host;
    }
    public void setHost(String host) {
        this.host = host;
    }
    public String getFormName() {
        return formName;
    }
    public void setFormName(String formName) {
        this.formName = formName;
    }
    public String getFormPassword() {
        return formPassword;
    }
    public void setFormPassword(String formPassword) {
        this.formPassword = formPassword;
    }
    public String getReplayAddress() {
        return replayAddress;
    }
    public void setReplayAddress(String replayAddress) {
        this.replayAddress = replayAddress;
    }
    public String getToAddress() {
        return toAddress;
    }
    public void setToAddress(String toAddress) {
        this.toAddress = toAddress;
    }
    public String getSubject() {
        return subject;
    }
    public void setSubject(String subject) {
        this.subject = subject;
    }
    public String getContent() {
        return content;
    }
    public void setContent(String content) {
        this.content = content;
    }
}

2.2 两种方式实现

首先你需要获取你的授权码，以@163.com为例 http://blog.csdn.net/hughnes/article/details/52070878 

sendTextMail是纯文本发送

sendHtmlMail是HTML格式标签发送 这种方式可以识别html标签

package textAnalysis.util;

import textAnalysis.dto.MailInfo;
import javax.mail.*;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import java.util.Date;
import java.util.Properties;

/**
 * Created by 草帽boy on 2016/12/8.
 */
public class MailSendUtil {
    private final static String host = "smtp.163.com"; //163的服务器
    private final static String formName = "YYYXXX@163.com";//你的邮箱
    private final static String password = "***********"; //授权码
    private final static String replayAddress = "YYYXXX@163.com"; //你的邮箱


    public static void sendHtmlMail(MailInfo info)throws Exception{
        info.setHost(host);
        info.setFormName(formName);
        info.setFormPassword(password);   //网易邮箱的授权码~不一定是密码
        info.setReplayAddress(replayAddress);

        Message message = getMessage(info);
        // MiniMultipart类是一个容器类，包含MimeBodyPart类型的对象
        Multipart mainPart = new MimeMultipart();
        // 创建一个包含HTML内容的MimeBodyPart
        BodyPart html = new MimeBodyPart();
        // 设置HTML内容
        html.setContent(info.getContent(), "text/html; charset=utf-8");
        mainPart.addBodyPart(html);
        // 将MiniMultipart对象设置为邮件内容
        message.setContent(mainPart);
        Transport.send(message);
    }

    public static void sendTextMail(MailInfo info) throws Exception {

        info.setHost(host);
        info.setFormName(formName);
        info.setFormPassword(password);   //网易邮箱的授权码~不一定是密码
        info.setReplayAddress(replayAddress);
        Message message = getMessage(info);
        //消息发送的内容
        message.setText(info.getContent());

        Transport.send(message);
    }

    private static Message getMessage(MailInfo info) throws Exception{
        final Properties p = System.getProperties() ;
        p.setProperty("mail.smtp.host", info.getHost());
        p.setProperty("mail.smtp.auth", "true");
        p.setProperty("mail.smtp.user", info.getFormName());
        p.setProperty("mail.smtp.pass", info.getFormPassword());

        // 根据邮件会话属性和密码验证器构造一个发送邮件的session
        Session session = Session.getInstance(p, new Authenticator(){
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication(p.getProperty("mail.smtp.user"),p.getProperty("mail.smtp.pass"));
            }
        });
        session.setDebug(true);
        Message message = new MimeMessage(session);
        //消息发送的主题
        message.setSubject(info.getSubject());
        //接受消息的人
        message.setReplyTo(InternetAddress.parse(info.getReplayAddress()));
        //消息的发送者
        message.setFrom(new InternetAddress(p.getProperty("mail.smtp.user"),"余高峰"));
        // 创建邮件的接收者地址，并设置到邮件消息中
        message.setRecipient(Message.RecipientType.TO,new InternetAddress(info.getToAddress()));
        // 消息发送的时间
        message.setSentDate(new Date());


        return message ;
    }
}

三：测试

@Test
    public void send(){
        String mail = "mmmmmmm@qq.com"; //发送对象的邮箱
        String title = "我有一句话跟你说";
        String content = "<div>你不在学校吗？</div><br/><hr/><div>记得28号来学校</div>";
        MailInfo info = new MailInfo();
        info.setToAddress(mail);
        info.setSubject(title);
        info.setContent(content);
        try {
　　　　　　　//MailSendUtil.sendTextMail(info);
            MailSendUtil.sendHtmlMail(info);
        } catch (Exception e) {
            System.out.print("'"+title+"'的邮件发送失败！");
            e.printStackTrace();
        }
    }

采用的Junit的方式测试的采用  sendTextMail  的结果是

采用的Junit的方式测试的采用  sendHtmlMai l的结果是