需要帮助设置一个类来发送电子邮件，它从主类调用
当用户第一次登录时，我正尝试从我的应用程序发送电子邮件。 该电子邮件包含激活码。
更新：我下载了最新的javamail API以及最新的JAF（JavaBeans Activation Framework），由于导入是未知符号，因此无法编译。 如何从javax包导入？
这是我到目前为止的代码：
import java.util.ArrayList; import javax.mail.Message; import javax.mail.MessagingException; 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 Email { static String smtpHost; static int smtpPort; static String from; static String to; static String subject; static String content; public Email(String toEmail, String code){ smtpHost = "localhost"; smtpPort = 25; from = "admin@Nestroia.com"; to = toEmail; subject = "Hello from Nestroia.com"; content = "This is your activation code: " + code; } public Email(String toEmail, String name, String password){ smtpHost = "localhost"; smtpPort = 25; from = "admin@Nestroia.com"; to = toEmail; subject = "Hello from Nestroia.com"; content = "This is your Login information.\n" + "Name: " + name + "\n" + "Password: " + password; } public static void send() throws AddressException, MessagingException { // Create a mail session java.util.Properties props = new java.util.Properties(); props.put("mail.smtp.host", smtpHost); props.put("mail.smtp.port", ""+smtpPort); Session session = Session.getDefaultInstance(props, null); // Construct the message Message msg = new MimeMessage(session); msg.setFrom(new InternetAddress(from)); msg.setRecipient(Message.RecipientType.TO, new InternetAddress(to)); msg.setSubject(subject); msg.setText(content); // Send the message Transport.send(msg); 这是堆栈跟踪：
java.lang.RuntimeException: java.lang.ClassFormatError: Absent Code attribute in method that is not native or abstract in class file javax/mail/Address at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(Unknown Source) at com.sun.glass.ui.View.handleMouseEvent(Unknown Source) at com.sun.glass.ui.View.notifyMouse(Unknown Source) at com.sun.glass.ui.win.WinApplication._runLoop(Native Method) at com.sun.glass.ui.win.WinApplication.access$100(Unknown Source) at com.sun.glass.ui.win.WinApplication$2$1.run(Unknown Source) at java.lang.Thread.run(Thread.java:722) Caused by: java.lang.ClassFormatError: Absent Code attribute in method that is not native or abstract in class file javax/mail/Address at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:791) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) at java.net.URLClassLoader.access$100(URLClassLoader.java:71) at java.net.URLClassLoader$1.run(URLClassLoader.java:361) at java.net.URLClassLoader$1.run(URLClassLoader.java:355) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:354) at java.lang.ClassLoader.loadClass(ClassLoader.java:423) at java.lang.ClassLoader.loadClass(ClassLoader.java:356) at Nestroia.Nestroia_Main$6$1.handle(Nestroia_Main.java:669) at Nestroia.Nestroia_Main$6$1.handle(Nestroia_Main.java:559) at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(Unknown Source) at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source) at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source) at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(Unknown Source) at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source) at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source) at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source) at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source) at com.sun.javafx.event.EventUtil.fireEventImpl(Unknown Source) at com.sun.javafx.event.EventUtil.fireEvent(Unknown Source) at javafx.event.Event.fireEvent(Unknown Source) at javafx.scene.Node.fireEvent(Unknown Source) at javafx.scene.control.Button.fire(Unknown Source) at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(Unknown Source) at com.sun.javafx.scene.control.skin.SkinBase$5.handle(Unknown Source) at com.sun.javafx.scene.control.skin.SkinBase$5.handle(Unknown Source) at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(Unknown Source) at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source) at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source) at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(Unknown Source) at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source) at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source) at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source) at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source) at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source) at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source) at com.sun.javafx.event.EventUtil.fireEventImpl(Unknown Source) at com.sun.javafx.event.EventUtil.fireEvent(Unknown Source) at javafx.event.Event.fireEvent(Unknown Source) at javafx.scene.Scene$MouseHandler.process(Unknown Source) at javafx.scene.Scene$MouseHandler.process(Unknown Source) at javafx.scene.Scene$MouseHandler.access$1300(Unknown Source) at javafx.scene.Scene.impl_processMouseEvent(Unknown Source) at javafx.scene.Scene$ScenePeerListener.mouseEvent(Unknown Source) ... 7 more
我猜你的类路径中可能只有javaee.jar，它有javax.mail。*类的定义，但不是实际的实现。
你应该下载javamail api，如果你还没有。 在这里找到
您正在使用不包含实现的javaee.jar。 它是一个“存根”实现，只是为了实现编译而不是执行。 这篇文章提供了更多细节。 （它指的是Java EE 5，但对于6.）也是如此。）
本文提供了解释和可能的解决方案。 您可能需要调整类路径。