使用commons-email-1.3發送電子郵件時出錯

Question

在發送電子郵件時，我使用commons-email-1.3收到以下錯誤。
我已經下載並將外部jar添加到項目中。
請幫我解決這個問題！

package mypkg; 

import org.apache.commons.mail.DefaultAuthenticator; 
import org.apache.commons.mail.Email; 
import org.apache.commons.mail.SimpleEmail; 

public class sendingmail { 
    public static void main(String[] args) throws Exception { 
      Email email = new SimpleEmail(); 
      email.setSmtpPort(587); 
      email.setAuthenticator(new DefaultAuthenticator("myid","mypwd")); //Here is the error 
      email.setDebug(false); 
      email.setHostName("smtp.gmail.com"); 
      email.setFrom("me@gmail.com"); 
      email.setSubject("Hi"); 
      email.setMsg("This is a test mail ... :-)"); 
      email.addTo("you@gmail.com"); 
      email.setTLS(true); 
      email.send(); 
      System.out.println("Mail sent!"); 

    } 
} 

，讓錯誤的線路

email.setAuthenticator(new DefaultAuthenticator("myid","mypwd")); 

的錯誤消息是

Exception in thread "main" java.lang.Error: Unresolved compilation problems:

The type javax.mail.Authenticator cannot be resolved. It is indirectly referenced from required .class files
The method setAuthenticator(Authenticator) from the type Email refers to the missing type Authenticator at mypkg.mailtest.main(mailtest.java:13)

Answer 1

請從指定的鏈接

Activation JAR

Java Mail jar

Answer 2

你需要在你的classpath兩者的mail.jar和activation.jar。

Answer 3

打開文件的pom.xml下載jar文件，添加代碼：

<dependencies> 

    <!-- http://mvnrepository.com/artifact/org.apache.commons/commons-email --> 
    <dependency> 
     <groupId>org.apache.commons</groupId> 
     <artifactId>commons-email</artifactId> 
     <version>1.4</version> 
    </dependency> 
</dependencies>