我想使用 spring 框架发送纯文本电子邮件。我正在使用 netbeans IDE，并且还在我的依赖项文件夹中添加了 mail.jar、common.jar。我的代码如下：
@Service("emailService")
public class EmailService {
@Inject
private MailSender mailSender;
@RequestMapping(method = RequestMethod.POST)
public void sendMail(String from, String to, String subject, String body) {
System.out.println("=============from:"+from);
System.out.println("==========to:"+to);
System.out.println("subject: "+subject);
System.out.println("body: "+body);
SimpleMailMessage message = new SimpleMailMessage();
message.setFrom(from);
message.setTo(to);
message.setSubject(subject);
message.setText(body);
this.mailSender.send(message);
System.out.println("----------after sendig mail");
}
}
我收到 this.mailSender.send(message); 的 NullPointerException
我的 applicationContext.xml 如下：
<!-- Required for sending mail using spring framework -->
<context:component-scan base-package="net.codejava.spring" />
<bean id="mailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">
<property name="host" value="smtp.gmail.com" />
<property name="port" value="587" />
<property name="username" value="USERNAME" />
<property name="password" value="PASSWRD" />
<property name="javaMailProperties">
<props>
<prop key="mail.transport.protocol">smtp</prop>
<prop key="mail.smtp.auth">true</prop>
<prop key="mail.smtp.starttls.enable">true</prop>
</props>
</property>
</bean>
请告诉我如何克服它。