AAA AAA - 11 months ago 94
Java Question

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'crudRepository'

I work with a Spring boot project and I have the following entity class provided,

@Entity
public class User {

// form:hidden - hidden value
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
Integer id;

// form:input - textbox
@Column(name = "name", columnDefinition = "VARCHAR(30)", nullable = false)
String name;

// form:input - textbox
@Column(name = "email", columnDefinition = "VARCHAR(50)", nullable = false)
String email;

// form:textarea - textarea
@Column(name = "address", columnDefinition = "VARCHAR(255)", nullable = true)
String address;

// form:input - password
@Column(name = "password", columnDefinition = "VARCHAR(20)", nullable = false)
String password;

// form:input - password
String confirmPassword;

// form:checkbox - single checkbox
@Column(name = "newsletter", nullable = true)
boolean newsletter;

// form:checkboxes - multiple checkboxes
// @Column(columnDefinition = "VARCHAR(500)", nullable = false)
@ElementCollection
List<String> framework;

// form:radiobutton - radio button
@Column(name = "sex", columnDefinition = "VARCHAR(1)", nullable = true)
String sex;

// form:radiobuttons - radio button
@Column(name = "number", nullable = true)
Integer number;

// form:select - form:option - dropdown - single select
@Column(name = "", columnDefinition = "VARCHAR(10)", nullable = true)
String country;

// form:select - multiple=true - dropdown - multiple select
// @Column(columnDefinition = "VARCHAR(500)", nullable = true)
@ElementCollection
List<String> skill;

//Check if this is for New of Update
public boolean isNew() {
return (this.id == null);
}


public Integer getId() {
return id;
}

public void setId(Integer id) {
this.id = id;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public String getEmail() {
return email;
}

public void setEmail(String email) {
this.email = email;
}

public String getAddress() {
return address;
}

public void setAddress(String address) {
this.address = address;
}

public String getPassword() {
return password;
}

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

public String getConfirmPassword() {
return confirmPassword;
}

public void setConfirmPassword(String confirmPassword) {
this.confirmPassword = confirmPassword;
}

public boolean isNewsletter() {
return newsletter;
}

public void setNewsletter(boolean newsletter) {
this.newsletter = newsletter;
}

public List<String> getFramework() {
return framework;
}

public void setFramework(List<String> framework) {
this.framework = framework;
}

public String getSex() {
return sex;
}

public void setSex(String sex) {
this.sex = sex;
}

public Integer getNumber() {
return number;
}

public void setNumber(Integer number) {
this.number = number;
}

public String getCountry() {
return country;
}

public void setCountry(String country) {
this.country = country;
}

public List<String> getSkill() {
return skill;
}

public void setSkill(List<String> skill) {
this.skill = skill;
}

@Override
public boolean equals(Object o) {
if (this == o) return true;
if (!(o instanceof User)) return false;

User user = (User) o;

if (isNewsletter() != user.isNewsletter()) return false;
if (!getId().equals(user.getId())) return false;
if (!getName().equals(user.getName())) return false;
if (!getEmail().equals(user.getEmail())) return false;
if (getAddress() != null ? !getAddress().equals(user.getAddress()) : user.getAddress() != null) return false;
if (!getPassword().equals(user.getPassword())) return false;
if (getConfirmPassword() != null ? !getConfirmPassword().equals(user.getConfirmPassword()) : user.getConfirmPassword() != null)
return false;
if (!getFramework().equals(user.getFramework())) return false;
if (getSex() != null ? !getSex().equals(user.getSex()) : user.getSex() != null) return false;
if (getNumber() != null ? !getNumber().equals(user.getNumber()) : user.getNumber() != null) return false;
if (getCountry() != null ? !getCountry().equals(user.getCountry()) : user.getCountry() != null) return false;
return getSkill() != null ? getSkill().equals(user.getSkill()) : user.getSkill() == null;
}

@Override
public int hashCode() {

int result = getId().hashCode();

result = 31 * result + getName().hashCode();
result = 31 * result + getEmail().hashCode();
result = 31 * result + (getAddress() != null ? getAddress().hashCode() : 0);
result = 31 * result + getPassword().hashCode();
result = 31 * result + (getConfirmPassword() != null ? getConfirmPassword().hashCode() : 0);
result = 31 * result + (isNewsletter() ? 1 : 0);
result = 31 * result + getFramework().hashCode();
result = 31 * result + (getSex() != null ? getSex().hashCode() : 0);
result = 31 * result + (getNumber() != null ? getNumber().hashCode() : 0);
result = 31 * result + (getCountry() != null ? getCountry().hashCode() : 0);
result = 31 * result + (getSkill() != null ? getSkill().hashCode() : 0);
return result;
}
}


I would like to write some customized operations and tried to define the interfaces in that respect. The repository interfaces are provided below,

public interface CrudRepository<T, ID extends Serializable>
extends Repository<T, ID> {

<S extends T> S save(S entity);

T findOne(ID primaryKey);

Iterable<T> findAll();

Long count();

void delete(T entity);

boolean exists(ID primaryKey);

// … more functionality omitted.
}


This interface extends the previously provided interface,

@Repository
public interface IUserRepository extends CrudRepository<User, Long>{

}


While I compile the program, I get the following error,

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'crudRepository': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: Not a managed type: class java.lang.Object


What is the issue here?

Updated


The
Spring Boot
Application class is,

@SpringBootApplication
public class WebApplication extends SpringBootServletInitializer {

@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(WebApplication.class);
}

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

Answer Source

Add @NoRepositoryBean to your CrudRepository. This will allow auto-configuration to still occur without having to manually set the component scanning base packages.

The interface org.springframework.data.repository.Repository is a marker for an actual spring data repository. Since your CrudRepository extends Repository spring is trying to initialize a Spring managed repository named crudRepository for T (which essentially tranlates to Object). Since Object isn't managed by Hibernate it fails validation on startup and crashes.

@NoRepositoryBean will tell Spring to not generate a backing repository for a particular class that implements Repository.

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