使用电子邮件服务时的Grails错误

Question

这是控制器

类JavaMailerController {

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

这是我们的服务

import javax.mail.；import javax.mail.internet.；import java.util.

类JavaMailerService {

布尔事务= false def serviceMethod() { String d_email = "thisemail@gmail.com"，d_password =“this d_password”，d_host = "smtp.gmail.com"，d_port = "587"，m_to = "thisto@gmail.com"，m_subject =“the”，m_text =“嗨，这是测试邮件。”；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")；

//只是为了以防万一，但目前还不够奇怪，props.put("mail.smtp.auth"，"true")；//pros.put(“mail.smtp.debug”，"true")；props.put("mail.smtp.socketFactory.port"，d_port)；props.put("mail.smtp.socketFactory.class"，"javax.net.ssl.SSLSocketFactory")；props.put("mail.smtp.socketFactory.fallback"，“false”)

SecurityManager安全= System.getSecurityManager()；尝试{ Authenticator =新SMTPAuthenticator()；会话会话= Session.getInstance(props，auth)；//session.setDebug(真)；MimeMessage msg =新MimeMessage(会话)；msg.setText(m_text)；msg.setSubject(m_subject)；msg.setFrom(新InternetAddress(d_email))；msg.addRecipient(Message.RecipientType.TO，Message.RecipientType.TO)

新InternetAddress(M_to)；Transport.send(msg)；} catch (异常mex) { mex.printStackTrace()；}}

}

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

误差

错误200: java.lang.NullPointerException:无法在空对象Servlet上调用方法serviceMethod()：grails :/javaMailer/grails/javaMailer/x.分派异常消息:不能对null对象调用方法serviceMethod()，原因是: java.lang.NullPointerException:不能调用null对象类上的方法serviceMethod()：在Line：-1代码段中未知：

Answer 1

我认为您没有在控制器中camelCase您的服务字段。

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