如何解決：通過方法'returnReasonRepository'引數0表示的不滿足的依賴關系；

我正在嘗試運行 spring boot 應用程式，但出現以下錯誤：

應用程式運行失敗

org.springframework.beans.factory.UnsatisfiedDependencyException：在類路徑資源[muscat/configuration/RepositoryConfiguration.class]中定義的名稱為'returnReasonRepository'的bean創建錯誤：通過方法'returnReasonRepository'引數0表示的不滿足的依賴關系；嵌套例外是 org.springframework.beans.factory.BeanCreationException：在 ServiceApplication 上宣告的 @EnableJpaRepositories 中定義的 muscat.repository.SpringReturnReasonRepository 中創建名稱為“springReturnReasonRepository”的 bean 時出錯：呼叫 init 方法失敗；嵌套例外是 org.springframework.data.repository.query.QueryCreationException：無法為公共抽象 java.util.Optional .muscat.repository.SpringReturnReasonRepository.findByCode(java.lang.String) 創建查詢！原因：無法為方法 public abstract java.util.Optional .muscat.repository.SpringReturnReasonRepository.findByCode(java.lang.String) 創建查詢！沒有找到型別 ReturnReason! 的屬性代碼；嵌套例外是 java.lang.IllegalArgumentException: Failed to create query for method public abstract java.util.Optional .muscat.repository.SpringReturnReasonRepository.findByCode(java.lang.String)！未找到 ReturnReason 型別的屬性代碼！

這是物體：

import lombok.Data;
import lombok.EqualsAndHashCode;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;

import static javax.persistence.GenerationType.IDENTITY;

    @Entity
    @Data
    @EqualsAndHashCode(of = "id", callSuper = false)
    public class ReturnReason {
        @Id
        @GeneratedValue(strategy = IDENTITY)
        private Long id;
    
        @Column
        private String reasonCode;
    
        @Column
        private String reasonDescription;
    
    
        @Column
        private String reasonType;
    }


and this is the 

        public interface ReturnReasonRepository extends MessageRepository<ReturnReason> {
            Optional<ReturnReason> findByCode(String reasonCode);
        }
        
        
        public class ReturnReasonRepositoryImpl implements ReturnReasonRepository {
            private final SpringReturnReasonRepository springReturnReasonRepository;
        
            public ReturnReasonRepositoryImpl(SpringReturnReasonRepository springReturnReasonRepository) {
                this.springReturnReasonRepository = springReturnReasonRepository;
            }
        
        
            @Override
            public Optional<ReturnReason> findByCode(String reasonCode) {
                return springReturnReasonRepository.findByCode(reasonCode);
            }
        
            @Override
            public ReturnReason save(ReturnReason returnReason) {
                return springReturnReasonRepository.save(returnReason);
            }
    
    
        public interface SpringReturnReasonRepository extends CrudRepository<ReturnReason, Long>, JpaSpecificationExecutor<ReturnReason> {
            Optional<ReturnReason> findByCode(String reasonCode);
        }
    
    
    @Configuration
    public class RepositoryConfiguration {
    
    
        @Bean
        public BankInformationRepository bankInformationRepository(SpringBankInformationRepository springBankInformationRepository) {
            return new BankInformationRepositoryImpl(springBankInformationRepository);
        }
    
        @Bean
        public ReturnReasonRepository returnReasonRepository(SpringReturnReasonRepository springReturnReasonRepository) {
            return new ReturnReasonRepositoryImpl(springReturnReasonRepository);
        }
    }

我的錯誤是什么，我該如何解決？

uj5u.com熱心網友回復：

muscat.repository.SpringReturnReasonRepository.findByCode(java.lang.String)！未找到 ReturnReason 型別的屬性代碼！

這是你的錯誤。在SpringReturnReasonRepository中，您有findByCode但沒有code在您的ReturnReason物體中命名的屬性。如果將此方法重命名為findByReasonCode，它將起作用。

如果您想了解更多關于 JPA 存盤庫方法命名約定的資訊，可以參考此鏈接。

標籤：爪哇 春天 弹簧靴

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