Question

这是控制器

class JavaMailerController {

JavaMailerService javamailerservice
def x = {javamailerservice.serviceMethod()} }

这是服务

import javax.mail。;进口   。javax.mail.internet ;进口   java.util中。*;

class JavaMailerService {
boolean transactional = false

def serviceMethod() { String  d_email = "thisemail@gmail.com",
        d_password = "thispassword",
        d_host = "smtp.gmail.com",
        d_port  = "587",
        m_to = "thisto@gmail.com",
        m_subject = "Testing",
        m_text = "Hey, this is the testing email.";

    Properties props = new Properties();
    props.put("mail.smtp.user", d_email);
    props.put("mail.smtp.host", d_host);
    props.put("mail.smtp.port", d_port);
    props.put("mail.smtp.starttls.enable","true");
//以防万一，但目前不是必要的，奇怪的是 props.put（“mail.smtp.auth”，“true”）; //props.put("mail.smtp.debug“，”true“）; props.put（ “mail.smtp.socketFactory.port” D端口）; props.put（ “mail.smtp.socketFactory.class” “javax.net.ssl.SSLSocketFactory”）; props.put（ “mail.smtp.socketFactory.fallback” “假”）;
    SecurityManager security = System.getSecurityManager();

    try
    {
        Authenticator auth = new SMTPAuthenticator();
        Session session = Session.getInstance(props, auth);
        //session.setDebug(true);

        MimeMessage msg = new MimeMessage(session);
        msg.setText(m_text);
        msg.setSubject(m_subject);
        msg.setFrom(new InternetAddress(d_email));
        msg.addRecipient(Message.RecipientType.TO,
新的InternetAddress（m_to））;               Transport.send（MSG）;           }           catch（例外mex）           {               mex.printStackTrace（）;           }       }

}

私有类SMTPAuthenticator   扩展javax.mail.Authenticator       {           public PasswordAuthentication getPasswordAuthentication（）           {               返回新的PasswordAuthentication（d_email，   d_password）;           }       }

错误

错误200：java.lang.NullPointerException：无法在null对象上调用方法serviceMethod（） Servlet：Grails URI：/JavaMailer/grails/javaMailer/x.dispatch 异常消息：无法在null对象上调用方法serviceMethod（）引起：java.lang.NullPointerException：无法在null对象上调用方法serviceMethod（）分类：未知在线：[ - 1] 代码段：

Answer 1

我认为你没有来控制你的服务领域。

class JavaMailerController {
   JavaMailerService javaMailerService
   def x = {
      javaMailerService.serviceMethod()
   } 
}

Grails使用电子邮件服务时出错

1 个答案: