[Easyfox Server] Null Pointer Exception On User Repo While Trying To Connect

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Mathis Favier Beginner

Asked At: 1666772240000 In: EzyFox Server

Mathis Favier Beginner Asked At: 1666772240000 In: EzyFox Server

[Easyfox-server] null pointer Exception on user repo while trying to connect

So I watched the video for the authentication with Ezyfox-server but I got an NullPointerException on UserRepo while I try to log in. I can't figure out why because I triple check my code and the video... Here is my code:

# entity/BullyUser:

@Getter
@Setter
@ToString
@EzyCollection
public class BullyUser {
    @EzyId
    int id;

    String username;

    String password;
}

# repo/BullyUserRepo:

@EzyRepository("userRepo")
public interface BullyUserRepo extends EzyMongoRepository&lt;Long, BullyUser&gt; {
}

# service/BullyUserService:
public interface BullyUserService {

    void saveUser(BullyUser user);

    BullyUser createUser(String username, String password);

    BullyUser getUser(String username);
}

# service/impl/BullyUserServiceImpl:

@Setter
@EzySingleton("userService")
public class BullyUserServiceImpl implements BullyUserService {
    @EzyAutoBind
    private BullyUserRepo BullyUserRepo;

    @Override
    public void saveUser(BullyUser user) {
        BullyUserRepo.save(user);
    }

    @Override
    public BullyUser createUser(String username, String password) {
        BullyUser user = new BullyUser();
        user.setUsername(username);
        user.setPassword(password);
        BullyUserRepo.save(user);
        return user;
    }

    @Override
    public BullyUser getUser(String username) {
        return BullyUserRepo.findByField("username", username);
    }
}
    
// [PLUGIN]/controller/UserLoginController

@EzySingleton
@EzyEventHandler(USER_LOGIN)
public class UserLoginController extends EzyAbstractPluginEventController {
    @EzyAutoBind
    private WelcomeService welcomeService;

    @EzyAutoBind
    private BullyUserService userService;

    @Override
    public void handle(EzyPluginContext ctx, EzyUserLoginEvent event) {
        logger.info("{} login in", welcomeService.welcome(event.getUsername()));

        String username = event.getUsername();
        String password = event.getPassword();
        BullyUser user = userService.getUser(username);

        if (user == null) {
            logger.info("User {} does not exist, creating new user", username);
            user = userService.createUser(username, password);
            userService.saveUser(user);
        }
    }
}

3 Answer(s)
2208 Views

Answer

3 Answers

tvd12 Enlightened

Added an answer at: 1666772612000

tvd12 Enlightened

Added an answer at: 1666772612000

Could you provide the error log?
Are you sure you're setting up mongo database connection correctly?
Are you sure you're using java 8 or java 11?

Mathis Favier Beginner

Added an answer at: 1666773022000

Mathis Favier Beginner

Added an answer at: 1666773022000

1/ the error log:

com.tvd12.ezyfoxserver.exception.EzyRequestHandleException: error when handle request from: Session#1(owner: null, address: /127.0.0.1:34930), command: LOGIN, data: [BullyServer, Arciesis, admin, []]
	at com.tvd12.ezyfoxserver.exception.EzyRequestHandleException.requestHandleException(EzyRequestHandleException.java:28)
	at com.tvd12.ezyfoxserver.handler.EzySimpleDataHandler.handleRequest(EzySimpleDataHandler.java:120)
	at com.tvd12.ezyfoxserver.handler.EzySimpleDataHandler.handleReceivedData(EzySimpleDataHandler.java:90)
	at com.tvd12.ezyfoxserver.handler.EzySimpleDataHandler.dataReceived(EzySimpleDataHandler.java:36)
	at com.tvd12.ezyfoxserver.nio.handler.EzySimpleNioDataHandler.channelRead(EzySimpleNioDataHandler.java:19)
	at com.tvd12.ezyfoxserver.nio.handler.EzyAbstractHandlerGroup.fireChannelRead(EzyAbstractHandlerGroup.java:118)
	at com.tvd12.ezyfoxserver.socket.EzySocketRequestHandler.processRequest(EzySocketRequestHandler.java:69)
	at com.tvd12.ezyfoxserver.socket.EzySocketRequestHandler.handleEvent(EzySocketRequestHandler.java:30)
	at com.tvd12.ezyfoxserver.socket.EzySocketEventLoopOneHandler$1.doEventLoop(EzySocketEventLoopOneHandler.java:19)
	at com.tvd12.ezyfoxserver.socket.EzySimpleSocketEventLoop.eventLoop(EzySimpleSocketEventLoop.java:24)
	at java.lang.Thread.run(Thread.java:750)
Caused by: java.lang.NullPointerException: null
	at xyz.beerocraft.BullyServer.common.service.impl.BullyUserServiceImpl.getUser(BullyUserServiceImpl.java:33)
	at xyz.beerocraft.BullyServer.plugin.controller.UserLoginController.handle(UserLoginController.java:34)
	at xyz.beerocraft.BullyServer.plugin.controller.UserLoginController.handle(UserLoginController.java:17)
	at com.tvd12.ezyfoxserver.context.EzyAbstractContext.handleEvent(EzyAbstractContext.java:78)
	at com.tvd12.ezyfoxserver.command.impl.EzyBroadcastPluginsEventImpl.firePluginEvent(EzyBroadcastPluginsEventImpl.java:60)
	at com.tvd12.ezyfoxserver.command.impl.EzyBroadcastPluginsEventImpl.fire(EzyBroadcastPluginsEventImpl.java:42)
	at com.tvd12.ezyfoxserver.context.EzySimpleZoneContext.broadcastPlugins(EzySimpleZoneContext.java:84)
	at com.tvd12.ezyfoxserver.controller.EzyLoginController.firePluginEvent(EzyLoginController.java:82)
	at com.tvd12.ezyfoxserver.controller.EzyLoginController.control(EzyLoginController.java:65)
	at com.tvd12.ezyfoxserver.controller.EzyLoginController.handle(EzyLoginController.java:33)
	at com.tvd12.ezyfoxserver.controller.EzyLoginController.handle(EzyLoginController.java:21)
	at com.tvd12.ezyfoxserver.handler.EzySimpleDataHandler.handleRequest(EzySimpleDataHandler.java:114)
	... 9 common frames omitted

2/ I tested my connection to mongodb just before trying to login an user so my guess is that is not the problem

3/ I'm effectively using java 8 in my project !

It seems like there is a problem with the @EzySingleton tag in tghe UserLginController but I can't figure out why.

Could you chat to me via facebook: https://www.facebook.com/dung.tavanand I will use anydesk to support you directly?

– tvd12 1666773135000

tvd12 Enlightened

Added an answer at: 1666777513000

tvd12 Enlightened

The Best Answer

Added an answer at: 1666777513000

you need use bullyUserRepo not BullyUserRepo
you don't need specific name for a repo or service
change file BullyServer-common-config.properties to application.properties?
delete MongoDBConfig file
read README.md to see how to deploy

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