java.lang.IllegalArgumentException：不是托管类型：启动存储库 bean 时的类

Question

您好，我正在尝试在 Spring Boot 应用程序启动时加载一些数据库值。我有自动接线服务，在服务中我有自动接线的道。下面是错误。

org.springframework.beans.factory.UnsatisfiedDependencyException：创建名为“validationExpressionService”的bean时出错：通过字段“validationExpressionDao”表达的依赖关系不满足；嵌套异常是 org.springframework.beans.factory.BeanCreationException：创建名为“IValidationExpressionDao”的 bean 时出错：调用 init 方法失败；嵌套异常是 java.lang.IllegalArgumentException: Not a managed type: class com.ril.nfg.dao.bean.ValidationExpression

我添加了@EnitityScan @EnableJPARepository 仅供参考，字符串中的主键，希望没问题。

实体

import java.io.Serializable;
import java.util.Date;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;

/**
 * The Class ValidationExpression.
 */
package com.ril.nfg.dao.bean;

@Entity
@Table(name = "VALIDATION_EXPRESSION")
public class ValidationExpression implements Serializable {


    private static final long serialVersionUID = 9096950800262493651L;

    private String validationId;
    private String expression;
    private String createdBy;
    private Date createdOn;
    private String description;
    private String responseCode;

     @Id
     @Column(name = "VALIDATION_ID", nullable = false, length = 100)
    public String getValidationId() {
        return validationId;
    }

    public void setValidationId(String validationId) {
        this.validationId = validationId;
    }

     @Column(name = "EXPRESSION", nullable = false, length = 200)
    public String getExpression() {
        return expression;
    }

    public void setExpression(String expression) {
        this.expression = expression;
    }
//remaining getters and setters
}

存储库

package com.ril.nfg.dao.repos;

import com.ril.nfg.dao.bean.ValidationExpression;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;

/**
 * The Interface IValidationExpressionDao.
 */
@Repository
public interface IValidationExpressionDao extends JpaRepository<ValidationExpression, String> {
}

服务

import java.util.List;

@Service
public class ValidationExpressionService {

    @Autowired
    IValidationExpressionDao validationExpressionDao;

    public List<ValidationExpression> getAll() {
        return validationExpressionDao.findAll();
    }
}

带有@Autwired 服务的类

public class CacheModuleParam implements ApplicationContextAware{

private static List<ValidationExpression> validationExpressionList = null;

@Autowired
    ValidationExpressionService validationExpressionService;

@Override
    public void setApplicationContext(final ApplicationContext appContext) throws BeansException {
validationExpressionList = validationExpressionService.getAll();
}
}

应用类

@ComponentScan(basePackages = {"com.ril.nfg"})
@EnableWebMvc
@EnableAutoConfiguration
@SpringBootApplication//(exclude={DataSourceAutoConfiguration.class})
@EnableJpaRepositories(basePackages="com.ril.nfg.dao.repos",entityManagerFactoryRef="oracleEntityManagerFactory")
//@EntityScan(basePackages = "com.ril.nfg.dao.bean")
public class NFGApplication {

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

}

互联网上的所有解决方案都集中在@EntityScan。请帮助我理解这段代码有什么问题。提前致谢

Answer 1

为什么你有所有这些配置？只需将我们的应用程序放在包树中所有其他类的上一层，您就可以使用这样的类：

@SpringBootApplication
public class NFGApplication {

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

}

包：

com.ril.nfg <- here you put NFGApplication

以及 com.ril.nfg 子包中的所有其他类

然后一切都会好起来的！