Mail

使用Java验证smtp服务器凭据，无实际操作

依赖：

        <dependency>
            <groupId>javax.mail</groupId>
            <artifactId>mail</artifactId>
            <version>1.4.7</version>
        </dependency>

代码：

import java.util.Properties;

import javax.mail.AuthenticationFailedException;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;

/**
 * @author 
 * 日期 2019/12/5 13:58
 * 描述
 * @version 1.0
 * @since 1.0
 */
public class ConfirmSmtp {

    public static void main(String[] args) {

        int port = 25;
        String host = "smtp.qq.cn";
        String user = "xxxxxxxxx@qq.com";
        String pwd = "xxxxxxxxx";

        try {
            Properties props = new Properties();
            // required for gmail
            props.put("mail.smtp.starttls.enable", "true");
            props.put("mail.smtp.auth", "true");
            // or use getDefaultInstance instance if desired...
            Session session = Session.getInstance(props, null);
            Transport transport = session.getTransport("smtp");
            transport.connect(host, port, user, pwd);
            transport.close();
            System.out.println("success");
        } catch (AuthenticationFailedException e) {
            System.out.println("AuthenticationFailedException - for authentication failures");
            e.printStackTrace();
        } catch (MessagingException e) {
            System.out.println("for other failures");
            e.printStackTrace();
        } catch (Exception e) {
            System.out.println("other exception");
            e.printStackTrace();
        }
    }
}