CODEWITHSUNDEEP
javaspring-boot
Chandler Bing
Chandler Bing

Reputation: 343

Spring-boot:bean could not be found

I am new to spring boot and i am writing CRUD operation for basic practices, here is my code.

DemoApplication.java:

 package com.example.controller;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;

 @SpringBootApplication
  public class DemoApplication {

    public static void main(String[] args) {
    SpringApplication.run(DemoApplication.class, args);
  }

}

User.java

   package com.example.model;

  public class User {
   String userName;
  String password;

public String getUserName() {
    return this.userName;
}

public void setUserName(String userName) {
    this.userName = userName;
}

public String getPassword() {
    return password;
}

public void setPassword(String password) {
    this.password = password;
}

}

UserServices.java: 

 package com.example.services;
 import com.example.model.User;
 import org.springframework.stereotype.Repository;
 import org.springframework.stereotype.Service;

 @Repository
 public interface UserServices {
     public String loginService(User user);
 }

UserServiceImplementatioin.java:

package com.example.serviceimplementation;
import com.example.model.User;
import com.example.services.UserServices;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
@Service
public class UserServiceImplementation implements UserServices {
    public String loginService(User user) {
     if(user.getUserName().equals("demouser") && user.getPassword().equals("demopass")) {
        return "Login successfully";
     }
    return "Invalid Username and password";

    }
 }

ServiceController.java:

  package com.example.controller;
  import com.example.services.UserServices;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.stereotype.Service;
  import org.springframework.web.bind.annotation.*;
  import com.example.model.User;

 @RestController
 @RequestMapping(value="/askmeanything")
  public class ServiceController {
  @Autowired
  private UserServices userServices;

  public UserServices getUserServices() {
    return userServices;
  }

  public void setUserServices(UserServices userServices) {
    this.userServices = userServices;
  }

 @CrossOrigin(origins = "*")
 @RequestMapping(value = "/login", method = RequestMethod.POST)
  public String getMsg(@RequestBody User user) throws  Exception {
    return userServices.loginService(user);
  }
}

above code giving me the error Field userServices in com.example.controller.ServiceController required a bean of type 'com.example.services.UserServices' that could not be found.

Upvotes: 1

Views: 103

Answers (1)

Marcinek
Marcinek

Reputation: 2117

This is because your DemoApplication is defined in he following package com.example.controller. Thus by default Spring will only scan that package and desendence of it. E.g. com.example.controller.something. It will not scan in parent packages.

Either you move your DemoApplication to the parent package or you have to specify the correct packages for component-scan. 

@SpringBootApplication(scanBasePackages={"com.example"})

I suggest to move the class to the parent package and let spring boot do the magic.

Upvotes: 3

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