我是从 android studio 发送电子邮件的新手,为了开发,我将 java 与 java mail api 一起使用。执行我的代码时,日志中会出现一条消息,指出我的用户名和/或密码不正确。强调我正在向自己发送电子邮件,因此发件人和收件人的电子邮件是相同的。 这是我的代码:
import android.os.Bundle;
import android.view.View;
import java.util.Properties;
import javax.mail.Authenticator;
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 MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void buttonSendEmail(View view){
try {
String stringSenderEmail = "[email protected]";
String stringReceiverEmail = "[email protected]";
String stringPasswordSenderEmail = "Test*123";
String stringHost = "smtp.gmail.com";
Properties properties = System.getProperties();
properties.put("mail.smtp.host", stringHost);
properties.put("mail.smtp.port", "465");
properties.put("mail.smtp.ssl.enable", "true");
properties.put("mail.smtp.auth", "true");
javax.mail.Session session = Session.getInstance(properties, new Authenticator() {
@Override
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(stringSenderEmail, stringPasswordSenderEmail);
}
});
MimeMessage mimeMessage = new MimeMessage(session);
mimeMessage.addRecipient(Message.RecipientType.TO, new InternetAddress(stringReceiverEmail));
mimeMessage.setSubject("Subject: Android App email");
mimeMessage.setText("Hello Programmer, \n\nProgrammer World has sent you this 2nd email. \n\n Cheers!\nProgrammer World");
Thread thread = new Thread(new Runnable() {
@Override
public void run() {
try {
Transport.send(mimeMessage);
} catch (MessagingException e) {
e.printStackTrace();
}
}
});
thread.start();
} catch (AddressException e) {
e.printStackTrace();
} catch (MessagingException e) {
e.printStackTrace();
}
}
}
plugins {
id 'com.android.application'
}
android {
compileSdk 31
defaultConfig {
applicationId "com.programmerworld.sendemailapp"
minSdk 31
targetSdk 31
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
packagingOptions{
exclude 'META-INF/NOTICE.md'
exclude 'META-INF/LICENSE.md'
}
}
dependencies {
implementation 'androidx.appcompat:appcompat:1.4.1'
implementation 'com.google.android.material:material:1.5.0'
implementation 'androidx.constraintlayout:constraintlayout:2.1.3'
testImplementation 'junit:junit:4.13.2'
androidTestImplementation 'androidx.test.ext:junit:1.1.3'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
implementation 'com.sun.mail:android-mail:1.6.6'
implementation 'com.sun.mail:android-activation:1.6.7'
}
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.programmerworld.sendemailapp">
<uses-permission android:name="android.permission.INTERNET"/>
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/Theme.SendEmailApp">
<activity
android:name=".MainActivity"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
<?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=".MainActivity">
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="105dp"
android:layout_marginTop="103dp"
android:onClick="buttonSendEmail"
android:text="Send Email"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
您好,请尝试使用您自己的 2 个电子邮件地址作为发件人和收件人。 另外,对于密码,不要写 Test*123,因为谷歌电子邮件已禁用第 3 方应用程序的选项。
https://www.youtube.com/watch?v=ndxUgivCszE 生成密码并将其粘贴到密码部分。 希望有帮助!