java发送邮件

@参考文章1 @参考文章2

 我测试用的QQ，需要到QQ邮箱里开通pop3服务

 

import org.apache.commons.mail.EmailException;
import org.apache.commons.mail.SimpleEmail;

public class SendMail {

    private static final String MAIL_CC = "xxx@qq.com";// 邮件的抄送人
    private static final String MAIL_BCC = "xxx@qq.com";// 邮件的密送人
    // 设置邮件服务器
    private static final String send_email_host_name = "smtp.qq.com";
    // 设置安全连接端口号
    private static final String send_email_ssl_port = "465";
    // 发送Email用户名
    private static final String send_email_user_name = "xxx@qq.com";
    // 发送Email密码。即上面开通的pop3的授权码
    private static final String send_email_user_pwd = "xxx";
    // 发送Email编码
    private static final String send_email_charset = "UTF-8";

    public static void main(String[] args) throws Exception {
        sendPlainEmail(send_email_user_name, "这是一个subject", "this is content");
    }

    /**
     * @todo 发送纯文本的Email
     * @param receiver 收信人
     * @param subjecct Email主题
     * @param msg Email内容
     * @throws EmailException
     * @date 2019年7月31日
     * @author yanan
     */
    public static void sendPlainEmail(String receiver, String subjecct, String msg) throws EmailException {
        SimpleEmail email = new SimpleEmail();
        email.setHostName(send_email_host_name);
        email.setSSLOnConnect(true);// 设置使用安全连接
        email.setSslSmtpPort(send_email_ssl_port);
        email.setAuthentication(send_email_user_name, send_email_user_pwd);
        try {
            email.addTo(receiver, "receiver");//评论区有猿讨论群发接口，其实直接在这里多次addTo增加收信人就行了
            email.setCharset(send_email_charset);
            email.setFrom(send_email_user_name);
            email.addBcc(MAIL_BCC);
            email.addCc(MAIL_CC);
            email.setSubject(subjecct);
            email.setMsg(msg);
            email.send();
        } catch (EmailException e) {
            throw new EmailException(e);
        }
    }
}

20191118：今天发送126，发现126邮箱不需要安全链接，即做如下更改即可

 email.setSSLOnConnect(false);// 设置不使用安全连接
//email.setSslSmtpPort(send_email_ssl_port);

126的send_email_host_name=smtp.126.com

20191120:今日发现126邮箱发送邮件后可以自动保存到已发送，但QQ不行，程序实现如下：@参考文章3，@参考文章4

email.send后添加：

saveEmailToSentMailFolder(email.getMimeMessage());

    
    /**
     * 获取用户的发件箱文件夹
     * 
     * @param message
     *            信息
     * @param store
     *            存储
     * @return
     * @throws IOException
     * @throws MessagingException
     */
    private static Folder getSentMailFolder(Message message, Store store)
            throws IOException, MessagingException {
        // 准备连接服务器的会话信息
        Properties props = new Properties();
        props.setProperty("mail.store.protocol", "imap");
        props.setProperty("mail.imap.host", ConfigUtil.getProperty("mail.imap.host"));
        props.setProperty("mail.imap.port", ConfigUtil.getProperty("mail.imap.port"));

        /** QQ邮箱需要建立ssl连接 */
        props.setProperty("mail.imap.socketFactory.class",
                "javax.net.ssl.SSLSocketFactory");
        props.setProperty("mail.imap.socketFactory.fallback", "false");
        props.setProperty("mail.imap.starttls.enable", "true");
        props.setProperty("mail.imap.socketFactory.port", ConfigUtil.getProperty("mail.imap.port"));

        // 创建Session实例对象
        Session session = Session.getInstance(props);
        URLName urln = new URLName("imap", ConfigUtil.getProperty("mail.imap.host"), Integer.parseInt(ConfigUtil.getProperty("mail.imap.port")), null,
                ConfigUtil.getProperty("sendemail_username"), ConfigUtil.getProperty("sendemail_userpwd"));
        // 创建IMAP协议的Store对象
        store = session.getStore(urln);
        store.connect();

        // 获得发件箱
        Folder folder = store.getFolder("Sent Messages");
        // 以读写模式打开发件箱
        folder.open(Folder.READ_WRITE);

        return folder;
    }
   /**
     * 保存邮件到发件箱
     * 
     * @param message
     *            邮件信息
     */
    private static void saveEmailToSentMailFolder(Message message) {

        Store store = null;
        Folder sentFolder = null;
        try {
            sentFolder = getSentMailFolder(message, store);
            message.setFlag(Flag.SEEN, true); // 设置已读标志
            sentFolder.appendMessages(new Message[] { message });
            
            System.out.println("已保存到发件箱...");
        } catch (Exception e) {
            e.printStackTrace();
        } finally {

            // 判断发件文件夹是否打开如果打开则将其关闭
            if (sentFolder != null && sentFolder.isOpen()) {
                try {
                    sentFolder.close(true);
                } catch (MessagingException e) {
                    e.printStackTrace();
                }
            }
            // 判断邮箱存储是否打开如果打开则将其关闭
            if (store != null && store.isConnected()) {
                try {
                    store.close();
                } catch (MessagingException e) {
                    e.printStackTrace();
                }
            }
        }
    }
View Code

完整代码如下：

package yanan.util;

import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Properties;

import javax.mail.Flags.Flag;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Store;
import javax.mail.URLName;

import org.apache.commons.io.FilenameUtils;
import org.apache.commons.mail.EmailAttachment;
import org.apache.commons.mail.EmailException;
import org.apache.commons.mail.MultiPartEmail;
import org.apache.commons.mail.SimpleEmail;

import sun.misc.BASE64Encoder;
public class SendMail {

    // 发送Email编码
    private static final String send_email_charset = "UTF-8";

    public static void main(String[] args) throws Exception {
       sendPlainEmail("xxx@qq.com", "ceshi", "this is content");
        //Map<String, String> multipart=new HashMap<String,String>();
      
        //sendMultipartEmail("xxx@qq.com", multipart,"体检报告2019" , "您的体检报告");
    }

    /**
     * @todo 发送纯文本的Email
     * @param receiver 收信人
     * @param subjecct Email主题
     * @param content Email内容
     * @throws EmailException
     * @date 2019年7月31日
     * @author yanan
     */
    public static boolean sendPlainEmail(String receiver, String subjecct, String content){
        System.out.println("发送邮件开始");
        SimpleEmail email = new SimpleEmail();
        email.setHostName(ConfigUtil.getProperty("sendemail_hostname"));
        email.setSSLOnConnect(false);// 设置使用安全连接
        if(ConfigUtil.getProperty("sendemail_sslport")!=null&&ConfigUtil.getProperty("sendemail_sslport").equals("T")){
             email.setSslSmtpPort(ConfigUtil.getProperty("sendemail_sslport"));
        }
        email.setAuthentication(ConfigUtil.getProperty("sendemail_username"), ConfigUtil.getProperty("sendemail_userpwd"));

        try {
            email.addTo(receiver, "receiver");//评论区有猿讨论群发接口，其实直接在这里多次addTo增加收信人就行了
            email.setCharset(send_email_charset);
            email.setFrom(ConfigUtil.getProperty("sendemail_username"));
            if(ConfigUtil.getProperty("sendemail_misong")!=null&&!ConfigUtil.getProperty("sendemail_misong").equals("")){
                email.addBcc(ConfigUtil.getProperty("sendemail_misong"));
            }
            if(ConfigUtil.getProperty("sendemail_chaosong")!=null&&!ConfigUtil.getProperty("sendemail_chaosong").equals("")){
                email.addCc(ConfigUtil.getProperty("sendemail_chaosong"));
            }
            email.setSubject(subjecct);
            email.setMsg(content);
            email.send();

            saveEmailToSentMailFolder(email.getMimeMessage());
            return true;
        } catch (EmailException e) {
            e.printStackTrace();
            return false;
        }
    }

    
    /**
     * 获取用户的发件箱文件夹
     * 
     * @param message
     *            信息
     * @param store
     *            存储
     * @return
     * @throws IOException
     * @throws MessagingException
     */
    private static Folder getSentMailFolder(Message message, Store store)
            throws IOException, MessagingException {
        // 准备连接服务器的会话信息
        Properties props = new Properties();
        props.setProperty("mail.store.protocol", "imap");
        props.setProperty("mail.imap.host", ConfigUtil.getProperty("mail.imap.host"));
        props.setProperty("mail.imap.port", ConfigUtil.getProperty("mail.imap.port"));

        /** QQ邮箱需要建立ssl连接 */
        props.setProperty("mail.imap.socketFactory.class",
                "javax.net.ssl.SSLSocketFactory");
        props.setProperty("mail.imap.socketFactory.fallback", "false");
        props.setProperty("mail.imap.starttls.enable", "true");
        props.setProperty("mail.imap.socketFactory.port", ConfigUtil.getProperty("mail.imap.port"));

        // 创建Session实例对象
        Session session = Session.getInstance(props);
        URLName urln = new URLName("imap", ConfigUtil.getProperty("mail.imap.host"), Integer.parseInt(ConfigUtil.getProperty("mail.imap.port")), null,
                ConfigUtil.getProperty("sendemail_username"), ConfigUtil.getProperty("sendemail_userpwd"));
        // 创建IMAP协议的Store对象
        store = session.getStore(urln);
        store.connect();

        // 获得发件箱
        Folder folder = store.getFolder("Sent Messages");
        // 以读写模式打开发件箱
        folder.open(Folder.READ_WRITE);

        return folder;
    }
    /**
     * 保存邮件到发件箱
     * 
     * @param message
     *            邮件信息
     */
    private static void saveEmailToSentMailFolder(Message message) {

        Store store = null;
        Folder sentFolder = null;
        try {
            sentFolder = getSentMailFolder(message, store);
            message.setFlag(Flag.SEEN, true); // 设置已读标志
            sentFolder.appendMessages(new Message[] { message });
            
            System.out.println("已保存到发件箱...");
        } catch (Exception e) {
            e.printStackTrace();
        } finally {

            // 判断发件文件夹是否打开如果打开则将其关闭
            if (sentFolder != null && sentFolder.isOpen()) {
                try {
                    sentFolder.close(true);
                } catch (MessagingException e) {
                    e.printStackTrace();
                }
            }
            // 判断邮箱存储是否打开如果打开则将其关闭
            if (store != null && store.isConnected()) {
                try {
                    store.close();
                } catch (MessagingException e) {
                    e.printStackTrace();
                }
            }
        }
    }
    /**
     * 发送多个带附件的Email
     * @param receiver 收信人
     * @param multipart 附件map key:附件名字不需加文件扩展名,map value:附件路径和名字，如果为网络资源，请以http开头
     * @param subjecct Email主题
     * @param msg Email内容
     * @throws EmailException
     */
    @SuppressWarnings({ "deprecation" })
    public static void  sendMultipartEmail(String receiver,Map<String, String> multipart,String subjecct,String msg) throws EmailException{
        MultiPartEmail email = new MultiPartEmail();
        email.setHostName(ConfigUtil.getProperty("sendemail_hostname"));
        boolean is_ssl = true;
        email.setSSL(is_ssl);
        email.setSslSmtpPort(ConfigUtil.getProperty("sendemail_sslport"));
        email.setAuthentication(ConfigUtil.getProperty("sendemail_username"), ConfigUtil.getProperty("sendemail_userpwd"));

        Iterator<Entry<String,String>> iter = multipart.entrySet().iterator();
        String encoding = System.getProperty("file.encoding");

        BASE64Encoder encoder = new BASE64Encoder();
        while (iter.hasNext()) {
            Map.Entry<java.lang.String, java.lang.String> entry = (Map.Entry<java.lang.String, java.lang.String>) iter
                    .next();

            String multiPath = entry.getValue();
            String  multiName = entry.getKey() +"." + FilenameUtils.getExtension(multiPath);
            if(multiName!=null && multiPath!=null){
                EmailAttachment attachment =  new EmailAttachment();

                if(multiPath.startsWith("http:")){
                    try {
                        attachment.setURL(new URL(multiPath));
                    } catch (MalformedURLException e) {
                        throw new EmailException(e);
                    }
                }else{
                    attachment.setPath(multiPath);
                }
                attachment.setName("=?"+encoding+"?B?"+encoder.encode(multiName.getBytes())+"?=");
                attachment.setDisposition(EmailAttachment.ATTACHMENT);
                attachment.setDescription("");
                email.attach(attachment);
            }

        }
        if(receiver!=null){
            try {
                email.addTo(receiver,"receiver");
                email.setCharset(send_email_charset);
                email.setFrom(ConfigUtil.getProperty("sendemail_username"));
                email.setSubject(subjecct);
                email.setMsg(msg);
                email.send();
            } catch (EmailException e) {
                throw new EmailException(e);
            }
        }
    } 
    
}
View Code

为了广大网友拿来即用，将配置文件相关参数也一并贴出

#邮件服务器配置
# 邮件的抄送人
sendemail_chaosong=
#邮件的密送人
sendemail_misong=
#设置邮件服务器smtp.qq.comsmtp.126.com
sendemail_hostname=smtp.qq.com
#设置是否需要安全链接,T是F否.126邮箱不需要，qq需要
sendemail_sslneed=T
#设置安全连接端口号QQ465
sendemail_sslport=
#发送Email用户名
sendemail_username=xxx@qq.com
#发送Email密码。即上面开通的pop3的授权码
sendemail_userpwd=xxxxx

# IMAP服务器imap.126.com 143 imap.qq.com 993
mail.imap.host=imap.qq.com
mail.imap.port=993
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原文地址：https://www.cnblogs.com/yanan7890/p/11274453.html