我正在使用SpringBoot 1.4.0.RELEASE。我的项目结构树看起来像这样
com
└── projectname
├── Application.java
├── api
│ ├── authentication
│ │ ├── AuthenticatedUser.java
│ │ ├── AuthenticationRequest.java
│ │ ├── AuthenticationToken.java
│ │ ├── AuthenticationTokenFilter.java
│ │ ├── AuthenticationTokenUtil.java
│ │ ├── JwtAuthenticationEntryPoint.java
│ │ └── PasswordRequest.java
│ ├── common
│ │ └── CommonClasses.java
│ ├── config
│ │ ├── DbConfiguration.java
│ │ ├── SimpleCORSFilter.java
│ │ └── WebSecurityConfig.java
│ └── service
│ └── AuthenticationService.java
└── persistence
├── domain
│ └── User.java
├── repository
│ └── UserRepo.java
└── service
└── UserService.java
以下是我为Application.java
Spring课程的方法
Application.java
@SpringBootApplication
@ComponentScan
@EnableAutoConfiguration
@EnableSwagger2
@Log
public class Application extends SpringBootServletInitializer {
private static Class<Application> app = Application.class;
public static void main(String[] args) throws Exception {
SpringApplication.run(app, args);
}
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(app);
}
//other methods to configure swagger and security
}
以下是 UserRepo 的外观
public interface UserRepo extends MongoRepository<User, String> {
User findById(String emailId);
List<User> findAll();
}
这就是我如何实现我的 UserService.java
@Service
public class UserService {
@Autowired
private UserRepo userRepo;
// methods to fetch data
}
现在，当我尝试在userService中使用authenticationService进行登录时，应用程序会抛出异常，因为它无法找到userRepo bean。我在这里缺少的是这里的例外
14:31:32,930 ERROR [org.springframework.boot.SpringApplication] (ServerService Thread Pool -- 9) Application startup failed: org.springframework.context.ApplicationContextException: Unable to start embedded container; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'webSecurityConfig': Unsatisfied dependency expressed through field 'userDetailsService': Error creating bean with name 'authenticationService': Unsatisfied dependency expressed through field 'userService': Error creating bean with name 'userService': Unsatisfied dependency expressed through field 'userRepo': No qualifying bean of type [com.projectname.persistence.repository.UserRepo] found for dependency [com.projectname.persistence.repository.UserRepo]: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.projectname.persistence.repository.UserRepo] found for dependency [com.projectname.persistence.repository.UserRepo]: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userService': Unsatisfied dependency expressed through field 'userRepo': No qualifying bean of type [com.projectname.persistence.repository.UserRepo] found for dependency [com.projectname.persistence.repository.UserRepo]: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.projectname.persistence.repository.UserRepo] found for dependency [com.projectname.persistence.repository.UserRepo]: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'authenticationService': Unsatisfied dependency expressed through field 'userService': Error creating bean with name 'userService': Unsatisfied dependency expressed through field 'userRepo': No qualifying bean of type [com.projectname.persistence.repository.UserRepo] found for dependency [com.projectname.persistence.repository.UserRepo]: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.projectname.persistence.repository.UserRepo] found for dependency [com.projectname.persistence.repository.UserRepo]: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userService': Unsatisfied dependency expressed through field 'userRepo': No qualifying bean of type [com.projectname.persistence.repository.UserRepo] found for dependency [com.projectname.persistence.repository.UserRepo]: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.projectname.persistence.repository.UserRepo] found for dependency [com.projectname.persistence.repository.UserRepo]: 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.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:137)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:535)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:369)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:313)
at org.springframework.boot.web.support.SpringBootServletInitializer.run(SpringBootServletInitializer.java:150)
at org.springframework.boot.web.support.SpringBootServletInitializer.createRootApplicationContext(SpringBootServletInitializer.java:130)
at org.springframework.boot.web.support.SpringBootServletInitializer.onStartup(SpringBootServletInitializer.java:86)
at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:169)
at io.undertow.servlet.core.DeploymentManagerImpl.deploy(DeploymentManagerImpl.java:184)
at org.wildfly.extension.undertow.deployment.UndertowDeploymentService.startContext(UndertowDeploymentService.java:100)
at org.wildfly.extension.undertow.deployment.UndertowDeploymentService$1.run(UndertowDeploymentService.java:82)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
at org.jboss.threads.JBossThread.run(JBossThread.java:320)
答案 0 :(得分：3)
您可能忘记添加Spring Data MongoDb配置或使用错误的basePackages，如下所示：
@Configuration
@EnableMongoRepositories(basePackages = "com.projectname.persistence")
class ApplicationConfig extends AbstractMongoConfiguration {
//...
}