PROSAGA码农传奇-区块链扩展技术-如何使用GMail，Yahoo或Hotmail通过Java应用程序发送电子邮件？

0# 诸葛神侯 | 2019-08-31 10-32

1# 土豆 | 2019-08-31 10-32

<div class =“post-text”itemprop =“text”>
  <P>
    其他人在上面有很好的答案，但我想在这里添加一个关于我的经验的说明。我发现当使用Gmail作为我的网络应用程序的出站SMTP服务器时，Gmail只允许我发送大约10条消息，然后才能使用反垃圾邮件响应进行响应，我必须手动单步重新启用SMTP访问。我发送的电子邮件不是垃圾邮件，但是当用户在我的系统注册时，网站是“欢迎”电子邮件。所以，YMMV，我不会依赖Gmail生产webapp。如果您代表用户发送电子邮件，例如已安装的桌面应用（用户输入自己的Gmail凭据），您可能没问题。
  </p>
  <P>
    此外，如果您使用的是Spring，那么这是一个使用Gmail进行出站SMTP的工作配置：
  </p>
   <pre>
    <code>
      <bean id="mailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">
    <property name="defaultEncoding" value="UTF-8"/>
    <property name="host" value="smtp.gmail.com"/>
    <property name="port" value="465"/>
    <property name="username" value="${mail.username}"/>
    <property name="password" value="${mail.password}"/>
    <property name="javaMailProperties">
        <value>
            mail.debug=true
            mail.smtp.auth=true
            mail.smtp.socketFactory.class=java.net.SocketFactory
            mail.smtp.socketFactory.fallback=false
        </value>
    </property>
</bean>

</code>
  </pre>
</DIV>

2# google你他吗 | 2019-08-31 10-32

3# 啊这回彻底死了 | 2019-08-31 10-32

<div class =“post-text”itemprop =“text”>
  <P>
    我的完整代码如下：
  </p>
   <pre>
    <code>
      package ripon.java.mail;
import java.util.*;
import javax.mail.*;
import javax.mail.internet.*;

public class SendEmail
{
public static void main(String [] args)
{    
    // Sender's email ID needs to be mentioned
     String from = "test@gmail.com";
     String pass ="test123";
    // Recipient's email ID needs to be mentioned.
   String to = "ripon420@yahoo.com";

String host = "smtp.gmail.com";

// Get system properties
   Properties properties = System.getProperties();
   // Setup mail server
   properties.put("mail.smtp.starttls.enable", "true");
   properties.put("mail.smtp.host", host);
   properties.put("mail.smtp.user", from);
   properties.put("mail.smtp.password", pass);
   properties.put("mail.smtp.port", "587");
   properties.put("mail.smtp.auth", "true");

// Get the default Session object.
   Session session = Session.getDefaultInstance(properties);

try{
      // Create a default MimeMessage object.
      MimeMessage message = new MimeMessage(session);

// Set From: header field of the header.
      message.setFrom(new InternetAddress(from));

// Set To: header field of the header.
      message.addRecipient(Message.RecipientType.TO,
                               new InternetAddress(to));

// Set Subject: header field
      message.setSubject("This is the Subject Line!");

// Now set the actual message
      message.setText("This is actual message");

// Send message
      Transport transport = session.getTransport("smtp");
      transport.connect(host, from, pass);
      transport.sendMessage(message, message.getAllRecipients());
      transport.close();
      System.out.println("Sent message successfully....");
   }catch (MessagingException mex) {
      mex.printStackTrace();
   }
}
}

</code>
  </pre>
</DIV>

4# Fire ming | 2019-08-31 10-32

<div class =“post-text”itemprop =“text”>
  <P>
    这是一个易于使用的类，用于发送电子邮件
    <a href="https://mail.google.com/" rel="nofollow">
       <code>
        Gmail
      </code>
    </A>
    。你需要拥有
    <a href="https://java.net/projects/javamail/pages/Home" rel="nofollow">
       <code>
        JavaMail
      </code>
    </A>
     图书馆
    <a href="http://www.wikihow.com/Add-JARs-to-Project-Build-Paths-in-Eclipse-(Java)" rel="nofollow">
      添加到您的构建路径
    </A>
     或者只是使用
    <a href="http://mvnrepository.com/artifact/javax.mail" rel="nofollow">
       <code>
        Maven
      </code>
    </A>
    。
  </p>
   <pre>
    <code>
      import java.util.Properties;

import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;

public class GmailSender
{
    private static String protocol = "smtp";

private String username;
    private String password;

private Session session;
    private Message message;
    private Multipart multipart;

public GmailSender()
    {
        this.multipart = new MimeMultipart();
    }

public void setSender(String username, String password)
    {
        this.username = username;
        this.password = password;

this.session = getSession();
        this.message = new MimeMessage(session);
    }

public void addRecipient(String recipient) throws AddressException, MessagingException
    {
        message.addRecipient(Message.RecipientType.TO, new InternetAddress(recipient));
    }

public void setSubject(String subject) throws MessagingException
    {
        message.setSubject(subject);
    }

public void setBody(String body) throws MessagingException
    {
        BodyPart messageBodyPart = new MimeBodyPart();
        messageBodyPart.setText(body);
        multipart.addBodyPart(messageBodyPart);

message.setContent(multipart);
    }

public void send() throws MessagingException
    {
        Transport transport = session.getTransport(protocol);
        transport.connect(username, password);
        transport.sendMessage(message, message.getAllRecipients());

transport.close();
    }

public void addAttachment(String filePath) throws MessagingException
    {
        BodyPart messageBodyPart = getFileBodyPart(filePath);
        multipart.addBodyPart(messageBodyPart);

message.setContent(multipart);
    }

private BodyPart getFileBodyPart(String filePath) throws MessagingException
    {
        BodyPart messageBodyPart = new MimeBodyPart();
        DataSource dataSource = new FileDataSource(filePath);
        messageBodyPart.setDataHandler(new DataHandler(dataSource));
        messageBodyPart.setFileName(filePath);

return messageBodyPart;
    }

private Session getSession()
    {
        Properties properties = getMailServerProperties();
        Session session = Session.getDefaultInstance(properties);

return session;
    }

private Properties getMailServerProperties()
    {
        Properties properties = System.getProperties();
        properties.put("mail.smtp.starttls.enable", "true");
        properties.put("mail.smtp.host", protocol + ".gmail.com");
        properties.put("mail.smtp.user", username);
        properties.put("mail.smtp.password", password);
        properties.put("mail.smtp.port", "587");
        properties.put("mail.smtp.auth", "true");

return properties;
    }
}

</code>
  </pre>
  <P>
    用法示例：
  </p>
   <pre>
    <code>
      GmailSender sender = new GmailSender();
sender.setSender("myEmailNameWithout@gmail.com", "mypassword");
sender.addRecipient("recipient@somehost.com");
sender.setSubject("The subject");
sender.setBody("The body");
sender.addAttachment("TestFile.txt");
sender.send();

</code>
  </pre>
</DIV>

5# 银角 | 2019-08-31 10-32

6# 谦逊的毛巾 | 2019-08-31 10-32

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  <P>
    当我想发送带附件的电子邮件时，这就是我的工作，工作正常。 :)
  </p>
   <pre>
    <code>
       public class NewClass {

public static void main(String[] args) {
        try {
            Properties props = System.getProperties();
            props.put("mail.smtp.starttls.enable", "true");
            props.put("mail.smtp.host", "smtp.gmail.com");
            props.put("mail.smtp.auth", "true");
            props.put("mail.smtp.port", "465"); // smtp port
            Authenticator auth = new Authenticator() {

@Override
                protected PasswordAuthentication getPasswordAuthentication() {
                    return new PasswordAuthentication("username-gmail", "password-gmail");
                }
            };
            Session session = Session.getDefaultInstance(props, auth);
            MimeMessage msg = new MimeMessage(session);
            msg.setFrom(new InternetAddress("username-gmail@gmail.com"));
            msg.setSubject("Try attachment gmail");
            msg.setRecipient(RecipientType.TO, new InternetAddress("username-gmail@gmail.com"));
            //add atleast simple body
            MimeBodyPart body = new MimeBodyPart();
            body.setText("Try attachment");
            //do attachment
            MimeBodyPart attachMent = new MimeBodyPart();
            FileDataSource dataSource = new FileDataSource(new File("file-sent.txt"));
            attachMent.setDataHandler(new DataHandler(dataSource));
            attachMent.setFileName("file-sent.txt");
            attachMent.setDisposition(MimeBodyPart.ATTACHMENT);
            Multipart multipart = new MimeMultipart();
            multipart.addBodyPart(body);
            multipart.addBodyPart(attachMent);
            msg.setContent(multipart);
            Transport.send(msg);
        } catch (AddressException ex) {
            Logger.getLogger(NewClass.class.getName()).log(Level.SEVERE, null, ex);
        } catch (MessagingException ex) {
            Logger.getLogger(NewClass.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

}

</code>
  </pre>
</DIV>

7# 天线宝宝 | 2019-08-31 10-32

<div class =“post-text”itemprop =“text”>
   <pre>
    <code>
      //set CLASSPATH=%CLASSPATH%;activation.jar;mail.jar
import javax.mail.*;
import javax.mail.internet.*;
import java.util.*;

public class Mail
{
    String  d_email = "iamdvr@gmail.com",
            d_password = "****",
            d_host = "smtp.gmail.com",
            d_port  = "465",
            m_to = "iamdvr@yahoo.com",
            m_subject = "Testing",
            m_text = "Hey, this is the testing email using smtp.gmail.com.";
    public static void main(String[] args)
    {
        String[] to={"XXX@yahoo.com"};
        String[] cc={"XXX@yahoo.com"};
        String[] bcc={"XXX@yahoo.com"};
        //This is for google
        Mail.sendMail("venkatesh@dfdf.com", "password", "smtp.gmail.com", 
                      "465", "true", "true", 
                      true, "javax.net.ssl.SSLSocketFactory", "false", 
                      to, cc, bcc, 
                      "hi baba don't send virus mails..", 
                      "This is my style...of reply..If u send virus mails..");
    }

public synchronized static boolean sendMail(
        String userName, String passWord, String host, 
        String port, String starttls, String auth, 
        boolean debug, String socketFactoryClass, String fallback, 
        String[] to, String[] cc, String[] bcc, 
        String subject, String text) 
    {
        Properties props = new Properties();
        //Properties props=System.getProperties();
        props.put("mail.smtp.user", userName);
        props.put("mail.smtp.host", host);
        if(!"".equals(port))
            props.put("mail.smtp.port", port);
        if(!"".equals(starttls))
            props.put("mail.smtp.starttls.enable",starttls);
        props.put("mail.smtp.auth", auth);
        if(debug) {
            props.put("mail.smtp.debug", "true");
        } else {
            props.put("mail.smtp.debug", "false");         
        }
        if(!"".equals(port))
            props.put("mail.smtp.socketFactory.port", port);
        if(!"".equals(socketFactoryClass))
            props.put("mail.smtp.socketFactory.class",socketFactoryClass);
        if(!"".equals(fallback))
            props.put("mail.smtp.socketFactory.fallback", fallback);

try
        {
            Session session = Session.getDefaultInstance(props, null);
            session.setDebug(debug);
            MimeMessage msg = new MimeMessage(session);
            msg.setText(text);
            msg.setSubject(subject);
            msg.setFrom(new InternetAddress("p_sambasivarao@sutyam.com"));
            for(int i=0;i<to.length;i++) {
                msg.addRecipient(Message.RecipientType.TO, 
                                 new InternetAddress(to[i]));
            }
            for(int i=0;i<cc.length;i++) {
                msg.addRecipient(Message.RecipientType.CC, 
                                 new InternetAddress(cc[i]));
            }
            for(int i=0;i<bcc.length;i++) {
                msg.addRecipient(Message.RecipientType.BCC, 
                                 new InternetAddress(bcc[i]));
            }
            msg.saveChanges();
            Transport transport = session.getTransport("smtp");
            transport.connect(host, userName, passWord);
            transport.sendMessage(msg, msg.getAllRecipients());
            transport.close();
            return true;
        }
        catch (Exception mex)
        {
            mex.printStackTrace();
            return false;
        }
    }

}

</code>
  </pre>
</DIV>

8# 遇见你 | 2019-08-31 10-32

<div class =“post-text”itemprop =“text”>
  <P>
    最低要求：
  </p>
   <pre>
    <code>
      import java.util.Properties;

import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

public class MessageSender {

public static void sendHardCoded() throws AddressException, MessagingException {
        String to = "a@a.info";
        final String from = "b@gmail.com";

Properties properties = new Properties();
        properties.put("mail.smtp.starttls.enable", "true");
        properties.put("mail.smtp.auth", "true");
        properties.put("mail.smtp.host", "smtp.gmail.com");
        properties.put("mail.smtp.port", "587");

Session session = Session.getInstance(properties,
                new javax.mail.Authenticator() {
                    protected PasswordAuthentication getPasswordAuthentication() {
                        return new PasswordAuthentication(from, "BeNice");
                    }
                });

MimeMessage message = new MimeMessage(session);
        message.setFrom(new InternetAddress(from));
        message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));
        message.setSubject("Hello");
        message.setText("What's up?");

Transport.send(message);
    }

}

</code>
  </pre>
</DIV>

9# SHOU宅大可爱 | 2019-08-31 10-32

10# 求赞有赞必回 | 2019-08-31 10-32

<div class =“post-text”itemprop =“text”>
  <P>
    嗨试试这个代码....
  </p>
   <pre>
    <code>
      package my.test.service;

import java.util.Properties;

import javax.mail.Authenticator;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Message;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

public class Sample {
    public static void main(String args[]) {
        final String SMTP_HOST = "smtp.gmail.com";
        final String SMTP_PORT = "587";
        final String GMAIL_USERNAME = "xxxxxxxxxx@gmail.com";
        final String GMAIL_PASSWORD = "xxxxxxxxxx";

System.out.println("Process Started");

Properties prop = System.getProperties();
        prop.setProperty("mail.smtp.starttls.enable", "true");
        prop.setProperty("mail.smtp.host", SMTP_HOST);
        prop.setProperty("mail.smtp.user", GMAIL_USERNAME);
        prop.setProperty("mail.smtp.password", GMAIL_PASSWORD);
        prop.setProperty("mail.smtp.port", SMTP_PORT);
        prop.setProperty("mail.smtp.auth", "true");
        System.out.println("Props : " + prop);

Session session = Session.getInstance(prop, new Authenticator() {
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication(GMAIL_USERNAME,
                        GMAIL_PASSWORD);
            }
        });

System.out.println("Got Session : " + session);

MimeMessage message = new MimeMessage(session);
        try {
            System.out.println("before sending");
            message.setFrom(new InternetAddress(GMAIL_USERNAME));
            message.addRecipients(Message.RecipientType.TO,
                    InternetAddress.parse(GMAIL_USERNAME));
            message.setSubject("My First Email Attempt from Java");
            message.setText("Hi, This mail came from Java Application.");
            message.setRecipients(Message.RecipientType.TO,
                    InternetAddress.parse(GMAIL_USERNAME));
            Transport transport = session.getTransport("smtp");
            System.out.println("Got Transport" + transport);
            transport.connect(SMTP_HOST, GMAIL_USERNAME, GMAIL_PASSWORD);
            transport.sendMessage(message, message.getAllRecipients());
            System.out.println("message Object : " + message);
            System.out.println("Email Sent Successfully");
        } catch (AddressException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (MessagingException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}

</code>
  </pre>
</DIV>