SimpleMailMessage is not working - spring

Question

im using spring SimpleMailMessage,whenever i try to send mail function i get this exception:
java.lang.IllegalArgumentException: The 'original' message argument cannot be null
My spring.xml
<bean id="MailSender" class="com.util.MailSender">
<property name="mailSender" ref="mailSender"/>
<property name="templateMessage" ref="templateMessage"/>
</bean>
MailSenderClass:
private MailSender mailSender;
private SimpleMailMessage templateMessage;
//getter and setter
public void sendMail(String content, List<String> listEmail){
SimpleMailMessage[] mailMessageArray = new SimpleMailMessage[listEmail.size()];
Iterator<String> iterator = listEmail.iterator();
for (int index = 0; iterator.hasNext(); index ++){
SimpleMailMessage message = new SimpleMailMessage(this.templateMessage);
String toAddress = iterator.next();
message.setTo(toAddress);
message.setText(content);
mailMessageArray[index] = message;
}
this.mailSender.send(mailMessageArray);
}
Action Bean Class :
private MailSender mailSender=new MailSender();
public void ReSend(){
mailSender.sendMail(listBEeans[i].getEmailContent(),listEmail);
//able to pass the content and listEmails correctly
}
Did i miss any configurations in my action bean? Thank you

Answer 1

It looks like your bean is creating a local reference to MailSender instead of using the injected dependency (assuming you created one). Somewhere you should have:
AnObject
{
...
MailSender mailsender = (MailSender)context.getBean("mailSender");
...
}
And your bean should then say:
private MailSender = AnObject.getMailSender();

Answer 2

The problem is your template used in the constructor is null. It cannot be.
From the code of SimpleMailMessage:
public SimpleMailMessage(SimpleMailMessage original) {
Assert.notNull(original, "The 'original' message argument cannot be null");
...
Check if your bean templateMessage is really set to something or remove it from the MailSender and use the no-args constructor.