我正在尝试在NetBeans中创建一个电子邮件客户端来发送电子邮件，但我的代码中收到了AuthenticationFailedException。这是我的代码（有三个类）：
EmailClient.java
package sendemail;
public class EmailClient extends javax.swing.JFrame {
SendMail sm=new SendMail();
Settings set=new Settings();
public EmailClient() {
initComponents();
}
@SuppressWarnings("unchecked")
+Generated code
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
sm.setVisible(true);
}
private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
private void jMenuItem2ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
set.setVisible(true);
}
public static void main(String args[]) {
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
new EmailClient().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JButton jButton3;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
private javax.swing.JLabel jLabel5;
private javax.swing.JLabel jLabel6;
private javax.swing.JMenu jMenu4;
private javax.swing.JMenu jMenu5;
private javax.swing.JMenuBar jMenuBar2;
private javax.swing.JMenuItem jMenuItem2;
private javax.swing.JPanel jPanel1;
private javax.swing.JPanel jPanel3;
private javax.swing.JPanel jPanel4;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTextArea jTextArea1;
// End of variables declaration
}
Settings.java
package sendemail;
import javax.swing.*;
import java.awt.*;
public class Settings extends javax.swing.JFrame {
public String uname;
public String pass;
public String smtpserver;
public String port;
/**
* Creates new form Settings
*/
public Settings() {
initComponents();
}
public String getUname() {
return uname;
}
public String getPass() {
return pass;
}
public String getSmtpserver() {
return smtpserver;
}
public String getPort() {
return port;
}
@SuppressWarnings("unchecked")
+Generated Code
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
uname=jTextField1.getText().toString();
pass=jPasswordField1.getPassword().toString();
smtpserver=jComboBox1.getSelectedItem().toString();
port=jComboBox2.getSelectedItem().toString();
if(uname.equals("") || pass.equals("") || smtpserver.equals("") || port.equals("") )
{
JOptionPane.showMessageDialog(this,"All Fields are mandatory");
}
else
{
setVisible(false);
}
}
private void jComboBox1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
public static void main(String args[]) {
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new Settings().setVisible(false);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JComboBox jComboBox1;
private javax.swing.JComboBox jComboBox2;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
private javax.swing.JPanel jPanel1;
private javax.swing.JPasswordField jPasswordField1;
private javax.swing.JTextField jTextField1;
// End of variables declaration
}
SendMail.Java
package sendemail;
import java.util.Properties;
import javax.mail.Message;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import javax.swing.JOptionPane;
import java.awt.*;
import javax.mail.*;
import javax.mail.MessagingException;
public class SendMail extends javax.swing.JFrame {
Settings setfrm=new Settings();
String subject;
String from;
public SendMail() {
initComponents();
}
@SuppressWarnings("unchecked")
+Generated Code
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
try
{
final String user=setfrm.getUname();
final String password=setfrm.getPass();
String portnum=setfrm.getPort();
String smtpname=setfrm.getSmtpserver();
String to=jTextField1.getText();
subject=jTextField2.getText();
Properties properties=new Properties();
properties.put("mail.smtp.host",smtpname.toString());
properties.put("mail.smtp.socketFactory.port",portnum.toString());
properties.put("mail.smtp.socketFactory.class","javax.net.ssl.SSLSocketFactory");
properties.put("mail.smtp.port",portnum.toString());
properties.put("mail.smtp.auth","true");
Session session=Session.getDefaultInstance(properties,
new javax.mail.Authenticator() {
protected PasswordAuthentication getPasswordAuthentication(){
return new PasswordAuthentication(user,password);
}
}
);
MimeMessage message=new MimeMessage(session);
message.setFrom(new InternetAddress(user));
message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(jTextField1.getText().toString()));
message.setSubject(subject);
message.setText(jTextArea1.getText());
Transport.send(message);
JOptionPane.showMessageDialog(null,"message sent");
}
catch(MessagingException mex)
{
JOptionPane.showMessageDialog(null,mex);
}
}
private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
private void jTextField1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
public static void main(String args[]) {
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new SendMail().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JPanel jPanel1;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTextArea jTextArea1;
private javax.swing.JTextField jTextField1;
private javax.swing.JTextField jTextField2;
// End of variables declaration
}
异常堆栈跟踪
javax.mail.AuthenticationFailedException
at javax.mail.Service.connect(Service.java:306)
at javax.mail.Service.connect(Service.java:156)
at javax.mail.Service.connect(Service.java:105)
at com.sun.mail.smtp.SMTPTransport.connect(SMTPTransport.java:93)
at javax.mail.Transport.send0(Transport.java:168)
at javax.mail.Transport.send(Transport.java:98)
at sendemail.SendMail.jButton1ActionPerformed(SendMail.java:189)
at sendemail.SendMail.access$100(SendMail.java:25)
at sendemail.SendMail$2.actionPerformed(SendMail.java:77)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
at java.awt.Component.processMouseEvent(Component.java:6505)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3311)
at java.awt.Component.processEvent(Component.java:6270)
at java.awt.Container.processEvent(Container.java:2229)
at java.awt.Component.dispatchEventImpl(Component.java:4861)
at java.awt.Container.dispatchEventImpl(Container.java:2287)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
at java.awt.Container.dispatchEventImpl(Container.java:2273)
at java.awt.Window.dispatchEventImpl(Window.java:2719)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:735)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:694)
at java.awt.EventQueue$3.run(EventQueue.java:692)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
at java.awt.EventQueue$4.run(EventQueue.java:708)
at java.awt.EventQueue$4.run(EventQueue.java:706)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:705)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
BUILD SUCCESSFUL (total time: 2 minutes 46 seconds)
我正在尝试发送SendMail课程的电子邮件，而发件人的电子邮件和密码是从Settings输入的，而EmailClient仅用于设置JFrames的可见度按钮上的true或false点击。
SMTP server:smtp.gmail.com
port:465
我认为问题在于Authenticator类SendMail的变量，但我不确定问题到底是什么。
答案 0 :(得分：1)
我认为问题在于Authenticator的变量 SendMail.java ....我不知道问题到底是什么......
你的问题在这里：
pass = jPasswordField1.getPassword().toString();
这不会以您希望的方式转换getPassword()方法检索的char数组，因为它在数组上调用toString()方法。你应该用这个替换那一行：
pass = String.valueOf(jPasswordField1.getPassword());
另请注意，不建议使用Session.getDefaultInstance()方法。强烈建议使用Session.getInstance()方法，因为：
Session.getDefaultInstance方法首先创建一个新的Session使用传递的Properties来调用它的时间。的后续 来电将返回原始Session并忽略任何Properties您 传入。如果你想创建不同的Sessions 属性，Session.getDefaultInstance不会这样做。 [...]始终使用Session.getInstance以避免此问题。
JavaMail API FAQ对此进行了详细解释。您还可以查看使用此问答语hotmail login error in java (IDE: Netbeans)
中举例说明Session.getDefaultInstance()的后果
也不鼓励使用多个JFrame。请参阅此主题：The Use of Multiple JFrames, Good/Bad Practice?