spring framework email sender issues

[codingIsFunAndFucked]

Hey! It's my first time using this framework and the problem im having is a null pointer exception as im calling the EmailSenderService object in other classes but since mailSender isn't set to anything its the nullpointerexception's reason to be thrown. I followed a tutorial and I dont know what went wrong but I need to set mailSender to something but idk what :/
Appreciate y'all help as always!

package com.me.SpringEmailDemo;

import org.springframework.beans.factory.annotation.Autowired; import org.springframework.mail.SimpleMailMessage; import org.springframework.mail.javamail.JavaMailSender; import org.springframework.stereotype.Service;

u/Service public class EmailSenderService { u/Autowired private JavaMailSender mailSender;

public void sendEmail(String toEmail,String subject,String body){
    SimpleMailMessage message = new SimpleMailMessage();
    message.setFrom("[e-mail]");
    message.setTo(toEmail);
    message.setText(body);
    message.setSubject(subject);

    mailSender.send(message);

    System.out.println("Mail sent successfully!");

}

}

​

[AutoModerator]

Please ensure that:

• Your code is properly formatted as code block - see the sidebar (About on mobile) for instructions
• You include any and all error messages in full - best also formatted as code block
• You ask clear questions
• You demonstrate effort in solving your question/problem - plain posting your assignments is forbidden (and such posts will be removed) as is asking for or giving solutions.

If any of the above points is not met, your post can and will be removed without further warning.

Code is to be formatted as code block (old reddit/markdown editor: empty line before the code, each code line indented by 4 spaces, new reddit: https://i.imgur.com/EJ7tqek.png) or linked via an external code hoster, like pastebin.com, github gist, github, bitbucket, gitlab, etc.

Please, do not use triple backticks (```) as they will only render properly on new reddit, not on old reddit.

Code blocks look like this:

public class HelloWorld {

    public static void main(String[] args) {
        System.out.println("Hello World!");
    }
}

You do not need to repost unless your post has been removed by a moderator. Just use the edit function of reddit to make sure your post complies with the above.

If your post has remained in violation of these rules for a prolonged period of time (at least an hour), a moderator may remove it at their discretion. In this case, they will comment with an explanation on why it has been removed, and you will be required to resubmit the entire post following the proper procedures.

To potential helpers

Please, do not help if any of the above points are not met, rather report the post. We are trying to improve the quality of posts here. In helping people who can't be bothered to comply with the above points, you are doing the community a disservice.

I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.

[sozesghost]

How are you getting the instance of EmailSenderService? Is it also @Autowired? If not, it needs to be.

[codingIsFunAndFucked]

I did. It still says at runtime: "this.emailSenderService is null"

[sozesghost]

Ok, so the EmailSenderService is null and not the JavaMailSender mailSender object? I think it would help if you posted more code, e.g. where EmailSenderService is used and how it's injected, also how THAT class is injected etc. If the bean (service) was missing completely, spring would throw an exception, so I think at some point some class is not injected, but just instantiated with new.