react native android设置邮箱，进行邮件发送

react native android设置邮箱，进行邮件发送

1. 引入发送邮件的架包。

   在build.gradle 的dependencies 下引入：

    //发送邮件的依赖
    implementation 'com.sun.mail:android-mail:1.6.7'
    implementation 'com.sun.mail:android-activation:1.6.7'

2. 导入EmailSender类

    import android.widget.Toast;
    
    import java.util.Properties;
    
    import javax.mail.Authenticator;
    import javax.mail.Message;
    import javax.mail.MessageRemovedException;
    import javax.mail.MessagingException;
    import javax.mail.PasswordAuthentication;
    import javax.mail.Session;
    import javax.mail.Transport;
    import javax.mail.internet.InternetAddress;
    import javax.mail.internet.MimeMessage;
    
    public class EmailSender {
        private String username;
        private String password;
        private String host;
        private String port;
    
    
        public EmailSender(String username,String password,String host,String port){
            this.username = username;
            this.password = password;
            this.host = host;
            this.port = port;
    
        }
    
        public void sendEmail(String to, String subject , String text){
    
            Properties properties = new Properties();
            properties.put("mail.smtp.auth",true);
            properties.put("mail.smtp.starttls.enable",true);
            properties.put("mail.smtp.host",host);
            properties.put("mail.smtp.port",port);
    
            Session session = Session.getInstance(properties, new Authenticator() {
                @Override
                protected PasswordAuthentication getPasswordAuthentication() {
                    return new PasswordAuthentication(username,password);
                }
            });
    
            try {
                Message message = new MimeMessage(session);
                message.setFrom(new InternetAddress(username));
                message.setRecipients(Message.RecipientType.TO,InternetAddress.parse(to));
                message.setSubject(subject);
                message.setText(text);
    
    
                Transport.send(message);
    
            } catch (MessagingException e){
                e.printStackTrace();
            }
    
        }
    
    }

3. 在NativeModule 中调用。

username：账户名、邮箱

password：密码

host:主机

port:端口

to:发送的邮箱

subject:主题

text:内容

	@ReactMethod
	    public void sendEmail(String username,String password,String host,String port,String to,String subject,String text) {
	
	        new Thread(new Runnable() {
	            @Override
	            public void run() {
	                EmailSender emailSender = new EmailSender(username,password,host,port);
	
	                emailSender.sendEmail(to,subject,text);
	            }
	        }).start();
	

}