java Spring @Autowired 无法连接 Jpa 存储库
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Spring @Autowired can not wire Jpa repository
提问by krzakov
I clearly missing something here.
I'm making a simple spring bootapp with spring data jpainluded and face follwing error:
我显然在这里遗漏了一些东西。我正在制作一个spring boot带有spring data jpainluded 和 face follwing 错误的简单应用程序：
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [locassa.domain.repository.PersonRepository] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1373) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1119) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1014) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:545) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
... 32 common frames omitted
My code:
我的代码：
Application:
应用：
@SpringBootApplication
@ComponentScan(basePackages = {"app.controller", "app.domain"})
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
pom.xml
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>pl.mosek</groupId>
<artifactId>pl.mosek</artifactId>
<version>0.1-SNAPSHOT</version>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.3.0.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.16.6</version>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
</dependencies>
<properties>
<java.version>1.8</java.version>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
Controller:
控制器：
@RestController
public class TestController {
@Autowired
PersonService personService;
@RequestMapping("/")
public String index() {
return "Test spring boot";
}
@RequestMapping("/person/{id}")
public Person personById(@PathVariable Long id) {
return personService.findPerson(id);
}
}
PersonService:
人员服务：
public interface PersonService {
Person findPerson(Long id);
}
PersonServiceImpl:
PersonServiceImpl:
@Service
public class PersonServiceImpl implements PersonService {
@Autowired
PersonRepository personRepository;
public Person findPerson(Long id) {
return personRepository.findOne(id);
}
}
PersonRepository (this one cannot be autowired):
PersonRepository（这个不能自动装配）：
public interface PersonRepository extends CrudRepository<Person, Long> {
}
Searched on the web already. I didnt found a thing. Any ideas?
已经在网上搜过了。我没有发现任何东西。有任何想法吗？
回答by sasanka
I also had the same problem.I solved it with following solution. If your Entity classes and Repositories in a different package you need to use following annotations.
我也有同样的问题。我用以下解决方案解决了它。如果您的实体类和存储库在不同的包中，您需要使用以下注释。
@SpringBootApplication
@EntityScan(basePackages = {"EntityPackage"} )
@EnableJpaRepositories(basePackages = {"RepositoryPackage"})
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
