java - 错误构建项目spring org.springframework.beans.factory.UnsatisfiedDependencyException

Question

我正在学习 spring，并且正在做一个基本项目，该项目咨询表格并通过服务显示行。

在构建项目时，我遇到以下错误：

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'personaService' defined in file [D:\Daniel\Proyecto-Catalogo\backend\cyberbuzon\target\classes\com\verasoftec\cyberbuzon\negocio\services\PersonaService.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'personaRepository': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: Failed to create query for method public abstract com.verasoftec.cyberbuzon.modelo.Persona com.verasoftec.cyberbuzon.negocio.repository.PersonaRepository.edit(com.verasoftec.cyberbuzon.modelo.Persona)! No property edit found for type Persona!
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:769) ~[spring-beans-5.1.9.RELEASE.jar:5.1.9.RELEASE]
    at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:218) ~[spring-beans-5.1.9.RELEASE.jar:5.1.9.RELEASE]

... 我的班级：

我不明白我做错了什么。

标签： javaspringspring-bootjpa

Answer 1

您PersonaService缺少@Autowired注释。所以你personaRepository不能通过依赖注入来创建。

你有两个选择：

1. 您可以使用注释您的personaRepository字段@Autowired
2. 或者你可以用注释你的PersonaService构造函数@Autowired

你PersonaResource和你的personaService领域也是如此。

我建议注释您的构造函数。有关这方面的更多信息，请参阅这篇文章。

所以最后你的代码应该是这样的：

@Service
@Transactional(readOnly = true)
public class PersonaService {

   private final PersonaRespository personaRepository;

   @Autowired
   public PersonaService(PersonaRepository personaRepository) {
      this.personaRepository = personaRepository;
   }

   ...
}

你PersonaResource应该看起来像这样：

@RestController
@RequestMapping("/personas")
public class PersonaResource {

   private final PersonaService personaService;

   @Autowired
   public PersonaResource(PersonaService personaService) {
      this.personaService = personaService;
   }

   ...
}