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JavaMail

发表于 更新于 分类于 Valine：

1.加载jar包

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

JavaMail jar包下载地址
maven仓库地址

2.使用的主要类

  • Session 类
  • Message 类
  • Transport 类

    3.发送一封邮件

  1. 设置session类
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    //加载props
    Properties prop = new Properties();
    //从文件中读取
    InputStreamReader inputStreamReader = new InputStreamReader(UtilMail.class.getClassLoader().getResourceAsStream("mail.properties"),"GBK");
    //或者在代码中设置
    props.setProperty("mail.smtp.host","smtp.163.com")；//这里用163邮箱举例，不同的邮箱smtp服务器地址不同。
    props.setProperty("mail.smtp.auth","true")；
    props.setProperty("mail.transport.protocol","smtp")；
    Session session = Session.getInstance(prop);
    //mail.smtp.host是必须设置的。
    其他参数设置详见 javaMail官方文档
  2. 设置Message类
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    Message mimeMessage = new MimeMessage(session);
    //设置发送人的信息
       mimeMessage.setFrom(new InternetAddress(xxx@xxx.com,"xxx","UTF-8"));
    //设置发送的邮件正文
       mimeMessage.setContent("正文","text/html;charset=UTF-8");
    //设置发送的邮件主题
       mimeMessage.setSubject("主题","UTF-8");
    //设置接受人邮件地址
       mimeMessage.setRecipients(MimeMessage.RecipientType.TO,xxx@xxx.com);  
    //设置发送时间
    mimeMessage.setSentDate(new Date());
  3. 设置Transport类
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    Transport.send(mimeMessage,"xxx@xxx.com","这写发送邮箱的授权码");//此为懒人写法,好用就行

4.代码示例

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package util.utilmail;

import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.util.Date;
import java.util.Properties;

public class UtilMail {
    private static Properties prop = null;
    private static Session session =null;
    private static MimeMessage mimeMessage =null;

    private static String sendAddress = null;
    private static String receiveAddress = null;
    private static String sendAddressPassword = null;
    private static String contentType = null;
    private static String subjectType = null;
    private static String sendNicknameType = null;
    private static String sendNickname = null;

    static {
        Properties properties = new Properties();
        prop = new Properties();
        try {
            InputStreamReader inputStreamReader = new InputStreamReader(UtilMail.class.getClassLoader().getResourceAsStream("mail_user.properties"),"GBK");
            InputStreamReader inputStreamReader1 = new InputStreamReader(UtilMail.class.getClassLoader().getResourceAsStream("mail_connection.properties"),"GBK");
            prop.load(inputStreamReader1);
            properties.load(inputStreamReader);
        } catch (IOException e) {
            e.printStackTrace();
        }

        sendAddress = properties.getProperty("sendAddress");
        receiveAddress = properties.getProperty("receiveAddress");
        sendAddressPassword = properties.getProperty("sendAddressPassword");
        contentType = properties.getProperty("contentType");
        subjectType = properties.getProperty("subjectType");
        sendNicknameType = properties.getProperty("sendNicknameType");
        sendNickname = properties.getProperty("sendNickname");
        session = Session.getInstance(prop);
        mimeMessage = new MimeMessage(session);
    }

    public static void sendMessage(String nickname,String subject,String content,String receiver) throws MessagingException, UnsupportedEncodingException {
        mimeMessage.setFrom(new InternetAddress(sendAddress,nickname,sendNicknameType));
        mimeMessage.setContent(content,contentType);
        mimeMessage.setSubject(subject,subjectType);
        mimeMessage.setRecipients(MimeMessage.RecipientType.TO,receiver);
        mimeMessage.setSentDate(new Date());
        Transport.send(mimeMessage,sendAddress,sendAddressPassword);
    }

    public static void sendMessage(String subject,String content) throws MessagingException, UnsupportedEncodingException {
        mimeMessage.setFrom(new InternetAddress(sendAddress,sendNickname,sendNicknameType));
        mimeMessage.setContent(content,contentType);
        mimeMessage.setSubject(subject,subjectType);
        mimeMessage.setRecipients(MimeMessage.RecipientType.TO,receiveAddress);
        mimeMessage.setSentDate(new Date());
        Transport.send(mimeMessage,sendAddress,sendAddressPassword);
    }
}