春季启动 - 更新数据

Question

我有一个小问题。 我尝试在存储库中更新一列。

存储库

@Modifying
@Query("UPDATE Conversation conversation SET conversation.friend = ?1 WHERE conversation.id = ?2")
fun setConversationInfoById(friend: Boolean, id: UUID): List<Conversation>

服务

fun addDeleteFriend(conversation: Conversation) {
    val openedConversation = db.findByIdOrNull(conversation.id)

    if (openedConversation == null) db.save(conversation)
    else db.setConversationInfoById(openedConversation.friend, openedConversation.id)
}

控制器

@PostMapping("/friend", consumes = [MediaType.APPLICATION_JSON_VALUE])
        @ResponseBody
        fun friend(@RequestBody conversation: Conversation) = service.addDeleteFriend(conversation)

它是关于标志的 - 布尔人将更改状态列“朋友”。

当我开始时，主机向我展示了一个错误：

    org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with
 name 'conversationController' defined in file [####]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name
 'conversationService' defined in file [####]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 
'conversationRepository' defined in com.###.backend.repository.ConversationRepository defined in 
@EnableJpaRepositories declared on JpaRepositoriesRegistrar.EnableJpaRepositoriesConfiguration:
 Invocation of init method failed; nested exception is org.springframework.data.repository.query.QueryCreationException: Could not create query for 
public abstract java.util.List com.###.backend.repository.ConversationRepository.setConversationInfoById(boolean,java.util.UUID)!
 Reason: Failed to create query for method public abstract java.util.List 
com.##.backend.repository.ConversationRepository.setConversationInfoById(boolean,java.util.UUID)!
 No property 'setConversationInfoById' found for type 'Conversation'!; nested exception is 
java.lang.IllegalArgumentException: Failed to create query for method public abstract 
java.util.List com.###.backend.repository.ConversationRepository.setConversationInfoById(boolean,java.util.UUID)!
 No property 'setConversationInfoById' found for type 'Conversation'!

我尝试了所有选项，但是我不知道有什么问题。

Answer 1

查询方法通过ID更改对话数据，这是一个数据。
因此，它将返回一个对话对象。

尝试将列表更改为对话。

或者，我不太了解，但是存在Quertymethod命名惯例，因此请尝试查看。