我正在做下面的代码,用javamail发送gmail邮件。javamail不起作用。 MessagingException出现
import java.util.Properties;
import javax.mail.*;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
public class JavaApplication1 {
public static void main(String[] args) {
Properties props = new Properties();
props.put("mail.smtp.host", "smtp.gmail.com");
props.put("mail.smtp.socketFactory.port", "465");
props.put("mail.smtp.socketFactory.class",
"javax.net.ssl.SSLSocketFactory");
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.port", "465");
Session session = Session.getDefaultInstance(props,
new javax.mail.Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication("goods.ramesh","mypassword");
}
});
try {
Message message = new MimeMessage(session);
message.setFrom(new InternetAddress("[email protected]"));
message.setRecipients(Message.RecipientType.TO,
InternetAddress.parse("[email protected]"));
message.setSubject("Testing Subject");
message.setText("Dear Mail Crawler," +
"\n\n No spam to my email, please!");
Transport.send(message);
System.out.println("Done");
} catch (MessagingException e) {
throw new RuntimeException(e);
}
}
}
但我收到以下错误堆栈跟踪:
java.lang.ClassFormatError: Absent Code attribute in method that is not native or abstract in class file javax/mail/MessagingException
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$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2442)
at java.lang.Class.getMethod0(Class.java:2685)
at java.lang.Class.getMethod(Class.java:1620)
at sun.launcher.LauncherHelper.getMainMethod(LauncherHelper.java:484)
at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:476)
Exception in thread "main" Java Result: 1
我没有得到什么MessagingException在做什么,为什么会发生。 任何机构能帮我摆脱这个异常吗?
然而,构建是成功的。我的最新netbeans 7.1.2在编辑器中没有显示任何红色灯泡的错误。但运行后,我得到stacktrace错误。我实际上使用Netbeans并导入了“Java ee 6 api”库,它提供了所有需要的导入类。然而,错误在那里。 'java ee 6 api'是一个错误的使用。? – codeofnode 2012-07-20 02:35:50
问题是jar包含方法签名,但不包含它的代码。 public void method(Object o){/ * nothing here * /}。所以它编译,但你将无法运行它,因为代码丢失。试试这个:http://download.java.net/maven/2/javax/javaee-api/6.0/ – poussma 2012-07-20 06:22:13
我试过这个jar,但它不起作用,最后我从官方网站下了javamail并添加了jar到类路径,这里是链接http://www.oracle.com/technetwork/java/javasebusiness/downloads/java-archive-downloads-eeplat-419426.html#javamail-1.4.7-oth-JPR – user674158 2014-01-19 13:10:01