在前面的章节中,检查电子邮件和获取电子邮件,当您连接到邮箱的商店时,我们会通过授权凭据(用户广告密码)和主机.相反,我们可以将 Properties 配置为拥有主机,并告诉Session您的自定义Authenticator实例.这显示在下面的示例中:
我们将从我们将从"检查电子邮件"一章修改我们的CheckingMails.java。 其内容如下:
package com.it1352; import java.util.Properties; import javax.mail.Authenticator; import javax.mail.Folder; import javax.mail.Message; import javax.mail.MessagingException; import javax.mail.NoSuchProviderException; import javax.mail.PasswordAuthentication; import javax.mail.Session; import javax.mail.Store; public class CheckingMails { public static void check(String host, String storeType, String user, String password) { try { // create properties field Properties properties = new Properties(); properties.put("mail.pop3s.host", host); properties.put("mail.pop3s.port", "995"); properties.put("mail.pop3s.starttls.enable", "true"); // Setup authentication, get session Session emailSession = Session.getInstance(properties, new javax.mail.Authenticator() { protected PasswordAuthentication getPasswordAuthentication() { return new PasswordAuthentication( "manisha@gmail.com", "manisha123"); } }); // emailSession.setDebug(true); // create the POP3 store object and connect with the pop server Store store = emailSession.getStore("pop3s"); store.connect(); // create the folder object and open it Folder emailFolder = store.getFolder("INBOX"); emailFolder.open(Folder.READ_ONLY); // retrieve the messages from the folder in an array and print it Message[] messages = emailFolder.getMessages(); System.out.println("messages.length---" + messages.length); for (int i = 0, n = messages.length; i < n; i++) { Message message = messages[i]; System.out.println("---------------------------------"); System.out.println("Email Number " + (i + 1)); System.out.println("Subject: " + message.getSubject()); System.out.println("From: " + message.getFrom()[0]); System.out.println("Text: " + message.getContent().toString()); } // close the store and folder objects emailFolder.close(false); store.close(); } catch (NoSuchProviderException e) { e.printStackTrace(); } catch (MessagingException e) { e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } } public static void main(String[] args) { String host = "pop.gmail.com";// change accordingly String mailStoreType = "pop3"; String username = "abc@gmail.com";// change accordingly String password = "*****";// change accordingly check(host, mailStoreType, username, password); } }
您可以通过取消注释语句 emailSession来设置调试开启.setDebug(true);
现在我们的类已准备就绪,让我们编译上面的类.我已将类CheckingMails.java保存到目录:/home/manisha/JavaMailAPIExercise .我们需要类路径中的jar javax.mail.jar 和 activation.jar .执行以下命令从命令提示符编译类(两个jar放在/home/manisha/目录中):
javac -cp/home/manisha/activation.jar:/home/manisha/javax.mail.jar:CheckMails.java
现在该类已编译,请执行下面的命令运行:
java -cp/home/manisha/activation.jar:/home/manisha/javax.mail.jar:CheviewMails
您可以在命令控制台上看到类似的消息:
messages.length---3 --------------------------------- Email Number 1 Subject: Today is a nice day From: XYZ <xyz@gmail.com> Text: javax.mail.internet.MimeMultipart@45f676cb --------------------------------- Email Number 2 Subject: hiiii.... From: XYZ <xyz@gmail.com> Text: javax.mail.internet.MimeMultipart@37f12d4f --------------------------------- Email Number 3 Subject: helloo From: XYZ <xyz@gmail.com> Text: javax.mail.internet.MimeMultipart@3ad5ba3a