使用JavaMail API在Android中发送电子邮件

问题描述

我已经提到了我的类似问题的以前的答案，但它给出了使用Gmail的传出服务器配置的示例。
但是，我想使用JavaMail API作为我公司使用的webmail：

I have referred to previous answers to similar question of mine but it gives an example using the outgoing server configuration of Gmail.However I want to use the JavaMail API for the webmail that my company is using:

发送服务器： smtp.softcellindia.com

port： 25

加密类型： none

我尝试使用以下代码。但是似乎没有发送任何邮件。

I have tried using the following code. But it seems to send no mails.

import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.mail.Message;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.security.Security;
import java.util.Properties;

public class MailSender extends javax.mail.Authenticator {
    private String mailhost = "smtp.softcellindia.com";
    private String user;
    private String password;
    private Session session;

    static {
        Security.addProvider(new com.provider.JSSEProvider());
    }

    public MailSender(String user, String password) {
        this.user = user;
        this.password = password;

        Properties props = new Properties();
        props.setProperty("mail.transport.protocol", "smtp");
        props.setProperty("mail.host", mailhost);
        props.put("mail.smtp.auth", "true");
        props.put("mail.smtp.port", "25");
        props.put("mail.smtp.socketFactory.port", "25");
        props.put("mail.smtp.socketFactory.class",
                "javax.net.ssl.SSLSocketFactory");
        props.put("mail.smtp.socketFactory.fallback", "false");
        props.setProperty("mail.smtp.quitwait", "false");

        session = Session.getDefaultInstance(props, this);

       }

    protected PasswordAuthentication getPasswordAuthentication() {
        return new PasswordAuthentication(user, password);
    }

    public synchronized void sendMail(String subject, String body, String sender, String recipients) throws Exception {
        try{
        MimeMessage message = new MimeMessage(session);
        DataHandler handler = new DataHandler(new ByteArrayDataSource(body.getBytes(), "text/plain"));
        message.setSender(new InternetAddress(sender));
        message.setSubject(subject);
        message.setDataHandler(handler);
        if (recipients.indexOf(',') > 0)
            message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(recipients));
        else
            message.setRecipient(Message.RecipientType.TO, new InternetAddress(recipients));
        Transport.send(message);
        }catch(Exception e){

        }
    }

    public class ByteArrayDataSource implements DataSource {
        private byte[] data;
        private String type;

        public ByteArrayDataSource(byte[] data, String type) {
            super();
            this.data = data;
            this.type = type;
        }

        public ByteArrayDataSource(byte[] data) {
            super();
            this.data = data;
        }

        public void setType(String type) {
            this.type = type;
        }

        public String getContentType() {
            if (type == null)
                return "application/octet-stream";
            else
                return type;
        }

        public InputStream getInputStream() throws IOException {
            return new ByteArrayInputStream(data);
        }

        public String getName() {
            return "ByteArrayDataSource";
        }

        public OutputStream getOutputStream() throws IOException {
            throw new IOException("Not Supported");
        }
    }
}

推荐答案

我终于可以通过更改

props.setProperty（mail.host，mailhost）;

to

props.setProperty（mail.smtp.host ，mailhost）;

并删除以下行

props.put("mail.smtp.socketFactory.port", "25");
props.put("mail.smtp.socketFactory.class","javax.net.ssl.SSLSocketFactor");
props.put("mail.smtp.socketFactory.fallback", "false");
props.setProperty("mail.smtp.quitwait", "false");

这篇关于使用JavaMail API在Android中发送电子邮件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！