Javax로 Email 보내기

https://enfanthoon.tistory.com/112

[Android/Java] Javax로 Email 보내기

https://stickode.tistory.com/669

[Android][Java] Javax로 이메일 전송 기능 구현

activation.jar

0.05MB

additionnal.jar

0.04MB

mail.jar

0.42MB

ㅁ

 

 

 

 

 

<uses-permission android:name="android.permission.INTERNET" />

 

 

 

public class MainActivity extends AppCompatActivity {
private static final String TAG = "MainActivity";

Button mailButton = null;
EditText emailText = null;


@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder()
.permitDiskReads()
.permitDiskWrites()
.permitNetwork().build());

mailButton = (Button) findViewById(R.id.mailButton);
emailText = (EditText) findViewById(R.id.emailTextView);
mailButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v){
SendMail mailServer = new SendMail();
mailServer.sendSecurityCode(getApplicationContext(), emailText.getText().toString());
Log.v(TAG ,"mailServer : " + mailServer); //com.example.explain_javaxmail.SendMail@d121cf7

}
});
}
}

 

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".EmailSand">

<Button
android:id="@+id/mailButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="247dp"
android:text="전송"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent" />

<EditText
android:hint="이메일"
android:id="@+id/emailTextView"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginTop="246dp"
android:ems="10"
android:inputType="textEmailAddress"
app:layout_constraintEnd_toStartOf="@+id/mailButton"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />

<EditText
android:id="@+id/EmailAddress2"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:ems="10"
android:hint="확인 번호"
android:inputType="textEmailAddress"
app:layout_constraintEnd_toStartOf="@+id/checkButton"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/emailTextView" />

<Button
android:id="@+id/checkButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="확인"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toBottomOf="@+id/mailButton" />


</androidx.constraintlayout.widget.ConstraintLayout>

 

 

 

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Properties;

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

public GMailSender(String user, String password) {
this.user = user;
this.password = password;
emailCode = createEmailCode();
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", "465");
props.put("mail.smtp.socketFactory.port", "465");
props.put("mail.smtp.socketFactory.class",
"javax.net.ssl.SSLSocketFactory");
props.put("mail.smtp.socketFactory.fallback", "false");
props.setProperty("mail.smtp.quitwait", "false");

//구글에서 지원하는 smtp 정보를 받아와 MimeMessage 객체에 전달해준다.
session = Session.getDefaultInstance(props, this);
}

public String getEmailCode() {
return emailCode;
} //생성된 이메일 인증코드 반환

private String createEmailCode() { //이메일 인증코드 생성
String[] str = {"a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s",
"t", "u", "v", "w", "x", "y", "z", "1", "2", "3", "4", "5", "6", "7", "8", "9"};
String newCode = new String();

for (int x = 0; x < 8; x++) {
int random = (int) (Math.random() * str.length);
newCode += str[random];
}

return newCode;
}

protected PasswordAuthentication getPasswordAuthentication() {
//해당 메서드에서 사용자의 계정(id & password)을 받아 인증받으며 인증 실패시 기본값으로 반환됨.
return new PasswordAuthentication(user, password);
}

public synchronized void sendMail(String subject, String body, String recipients) throws Exception {
MimeMessage message = new MimeMessage(session);
DataHandler handler = new DataHandler(new ByteArrayDataSource(body.getBytes(), "text/plain")); //본문 내용을 byte단위로 쪼개어 전달
message.setSender(new InternetAddress(user)); //본인 이메일 설정
message.setSubject(subject); //해당 이메일의 본문 설정
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); //메시지 전달
}

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");
}
}

}

 

 

package com.example.explain_javaxmail;

import android.content.Context;
import android.util.Log;
import android.widget.Toast;
import androidx.appcompat.app.AppCompatActivity;
import javax.mail.MessagingException;
import javax.mail.SendFailedException;

public class SendMail extends AppCompatActivity {
private static final String TAG = "SendMail";

String user = "fougisa1042@gmail.com"; // 보내는 계정의 id
String password = "sjgm dbow ahjt pagh"; // 보내는 계정의 pw
public void sendSecurityCode(Context context, String sendTo) {
try {
GMailSender gMailSender = new GMailSender(user, password);
gMailSender.sendMail("제목입니다", "내용입니다", sendTo);
Toast.makeText(context, "이메일을 성공적으로 보냈습니다.", Toast.LENGTH_SHORT).show();
} catch (SendFailedException e) {
Toast.makeText(context, "이메일 형식이 잘못되었습니다.", Toast.LENGTH_SHORT).show();
} catch (MessagingException e) {
Toast.makeText(context, "인터넷 연결을 확인해주십시오", Toast.LENGTH_SHORT).show();
} catch (Exception e) {
e.printStackTrace();
}
}
}