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BeanCreationException：自動裝配依賴關係失敗，另一個Maven彈簧項目

2016-07-08 90 views
1

我在自動裝配和第二個彈簧引導項目的組合中遇到了一些問題。希望你能給我一些提示來解決這個問題。BeanCreationException：自動裝配依賴關係失敗，另一個Maven彈簧項目

項目設置： 項目datahub管理數據存儲訪問。項目dataintegration做了一些其他的東西，但需要項目datahub與數據存儲交流。這兩個項目都基於Spring引導，並被實現爲maven項目。

問題： 當我嘗試啓動dataintegration項目（運行Application.java），其中datahub項目通過maven的依賴集成，我得到在線程結束除外。項目datahub作爲獨立的演示應用程序工作。它也可以與spring引導web應用程序（通過HTTP請求讀取數據存儲實體）一起工作（通過pom.xml作爲依賴關係進行集成）。

任何想法???最令人沮喪的是，當項目數據整合作爲Web應用程序實現時，相同的設置正在工作。但是當dataintegration被實現爲原生Java應用程序（jar）時，它不起作用。

Datahub（com.example.mcp.datahub）：

Application.java

package com.example.mcp.datahub; 

import org.springframework.beans.factory.annotation.Autowired; 
import org.springframework.boot.CommandLineRunner; 
import org.springframework.boot.SpringApplication; 
import org.springframework.boot.autoconfigure.SpringBootApplication; 
import org.springframework.context.annotation.ComponentScan; 
import org.springframework.stereotype.Component; 
import org.springframework.transaction.annotation.EnableTransactionManagement; 

import com.example.mcp.datahub.model.WorkingDay; 
import com.example.mcp.datahub.service.WorkingDayService; 

@SpringBootApplication 
@EnableTransactionManagement 
@ComponentScan("com.example.mcp") 
public class Application { 

    public static void main(String[] args) { 
     SpringApplication.run(Application.class, args); 
    } 
}

WorkingDayRepository.java

package com.example.mcp.datahub.repositories; 

import org.springframework.data.repository.CrudRepository; 
import org.springframework.stereotype.Repository; 

import com.example.mcp.datahub.model.WorkingDay; 

@Repository 
public interface WorkingDayRepository extends CrudRepository<WorkingDay, Long> { 

}

WorkingDayService.java

package com.example.mcp.datahub.service; 

import java.util.Iterator; 
import java.util.List; 

import org.apache.commons.lang3.StringUtils; 
import org.springframework.beans.factory.annotation.Autowired; 
import org.springframework.context.annotation.ComponentScan; 
import org.springframework.stereotype.Service; 
import org.springframework.transaction.annotation.Transactional; 

import com.example.mcp.datahub.model.WorkingDay; 
import com.example.mcp.datahub.repositories.WorkingDayRepository; 

@Service 
@ComponentScan("com.example.mcp") 
public class WorkingDayService { 

    @Autowired 
    public WorkingDayRepository workingDayRepository; 

    @Transactional(readOnly=true) 
    public List<WorkingDay> getWorkingDays() { 
     List<WorkingDay> list = (List<WorkingDay>) workingDayRepository.findAll(); 
     return list; 
    } 
}

的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>com.example.mcp.datahub</groupId> 
    <artifactId>com.example.mcp.datahub</artifactId> 
    <version>0.0.1-SNAPSHOT</version> 
    <packaging>jar</packaging> 

    <name>com.example.mcp.datahub</name> 
    <description>Data Hub</description> 

    <parent> 
     <groupId>org.springframework.boot</groupId> 
     <artifactId>spring-boot-starter-parent</artifactId> 
     <version>1.3.5.RELEASE</version> 
     <relativePath/> <!-- lookup parent from repository --> 
    </parent> 

    <properties> 
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 
     <java.version>1.7</java.version> 
    </properties> 

    <dependencies> 
     <dependency> 
      <groupId>org.springframework.boot</groupId> 
      <artifactId>spring-boot-starter-data-jpa</artifactId> 
     </dependency> 
     <dependency> 
      <groupId>org.springframework.boot</groupId> 
      <artifactId>spring-boot-starter-jdbc</artifactId> 
     </dependency> 

     <dependency> 
      <groupId>com.h2database</groupId> 
      <artifactId>h2</artifactId> 
      <scope>runtime</scope> 
     </dependency> 
     <dependency> 
      <groupId>org.postgresql</groupId> 
      <artifactId>postgresql</artifactId> 
      <scope>runtime</scope> 
     </dependency> 
     <dependency> 
      <groupId>org.springframework.boot</groupId> 
      <artifactId>spring-boot-starter-test</artifactId> 
      <scope>test</scope> 
     </dependency> 

     <dependency> 
      <groupId>org.apache.commons</groupId> 
      <artifactId>commons-lang3</artifactId> 
      <version>3.0</version> 
     </dependency> 

    </dependencies> 

    <build> 
     <plugins> 
      <plugin> 
       <groupId>org.springframework.boot</groupId> 
       <artifactId>spring-boot-maven-plugin</artifactId> 
      </plugin> 
     </plugins> 
    </build> 


</project>

Dataintegration（com.example.mcp.dataintegration）：

Application.java

package com.example.mcp.dataintegration; 

import org.springframework.boot.SpringApplication; 
import org.springframework.boot.autoconfigure.SpringBootApplication; 
import org.springframework.context.annotation.ComponentScan; 
import org.springframework.scheduling.annotation.EnableScheduling; 


@SpringBootApplication 
@EnableScheduling 
@ComponentScan("com.example.mcp") 
public class Application { 

    public static void main(String[] args) { 
     SpringApplication.run(Application.class, args); 
    } 
}

ScheduledTasks.java

package com.example.mcp.dataintegration; 

import org.springframework.beans.factory.annotation.Autowired; 
import org.springframework.context.annotation.ComponentScan; 
import org.springframework.scheduling.annotation.Scheduled; 
import org.springframework.stereotype.Service; 

import com.example.mcp.datahub.model.WorkingDay; 
import com.example.mcp.datahub.service.WorkingDayService; 

@Service 
@ComponentScan("com.example.mcp") 
public class ScheduledTasks { 

    @Autowired 
    public WorkingDayService workingDayService; 

    @Scheduled(fixedDelay = 5000) 
    public void reportCurrentTime() { 
     //do something with workingDayService 
    } 

}

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>com.example.mcp.dataintegration</groupId> 
    <artifactId>com.example.mcp.dataintegration</artifactId> 
    <version>0.0.1-SNAPSHOT</version> 
    <packaging>jar</packaging> 

    <name>com.example.mcp.dataintegration</name> 
    <description>Data Integration Layer</description> 

    <parent> 
     <groupId>org.springframework.boot</groupId> 
     <artifactId>spring-boot-starter-parent</artifactId> 
     <version>1.3.5.RELEASE</version> 
     <relativePath/> <!-- lookup parent from repository --> 
    </parent> 

    <properties> 
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 
     <java.version>1.7</java.version> 
    </properties> 

    <dependencies> 
     <dependency> 
      <groupId>org.springframework.boot</groupId> 
      <artifactId>spring-boot-starter</artifactId> 
     </dependency> 
     <dependency> 
      <groupId>org.springframework.boot</groupId> 
      <artifactId>spring-boot-starter-data-jpa</artifactId> 
     </dependency> 
     <dependency> 
      <groupId>org.springframework.boot</groupId> 
      <artifactId>spring-boot-starter-jdbc</artifactId> 
     </dependency> 
     <dependency> 
      <groupId>com.h2database</groupId> 
      <artifactId>h2</artifactId> 
      <scope>runtime</scope> 
     </dependency> 
     <dependency> 
      <groupId>org.postgresql</groupId> 
      <artifactId>postgresql</artifactId> 
      <scope>runtime</scope> 
     </dependency> 
     <dependency> 
      <groupId>org.springframework.boot</groupId> 
      <artifactId>spring-boot-starter-test</artifactId> 
      <scope>test</scope> 
     </dependency> 

     <dependency> 
      <groupId>com.example.mcp.datahub</groupId> 
      <artifactId>com.example.mcp.datahub</artifactId> 
      <version>0.0.1-SNAPSHOT</version> 
      <scope>compile</scope> 
     </dependency> 

    </dependencies> 

    <build> 
     <plugins> 
      <plugin> 
       <groupId>org.springframework.boot</groupId> 
       <artifactId>spring-boot-maven-plugin</artifactId> 
      </plugin> 
     </plugins> 
    </build> 
</project>

異常

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduledTasks': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: public com.example.mcp.datahub.service.WorkingDayService com.example.mcp.dataintegration.ScheduledTasks.workingDayService; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'workingDayService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: public com.example.mcp.datahub.repositories.WorkingDayRepository com.example.mcp.datahub.service.WorkingDayService.workingDayRepository; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.example.mcp.datahub.repositories.WorkingDayRepository] 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.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1214) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    ... 
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1180) [spring-boot-1.3.5.RELEASE.jar:1.3.5.RELEASE] 
    at com.example.mcp.dataintegration.Application.main(Application.java:15) [classes/:na] 
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: public com.example.mcp.datahub.service.WorkingDayService com.example.mcp.dataintegration.ScheduledTasks.workingDayService; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'workingDayService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: public com.example.mcp.datahub.repositories.WorkingDayRepository com.example.mcp.datahub.service.WorkingDayService.workingDayRepository; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.example.mcp.datahub.repositories.WorkingDayRepository] 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.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:573) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    ... 16 common frames omitted 
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'workingDayService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: public com.example.mcp.datahub.repositories.WorkingDayRepository com.example.mcp.datahub.service.WorkingDayService.workingDayRepository; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.example.mcp.datahub.repositories.WorkingDayRepository] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} 
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
... 
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:545) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    ... 18 common frames omitted 
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: public com.example.mcp.datahub.repositories.WorkingDayRepository com.example.mcp.datahub.service.WorkingDayService.workingDayRepository; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.example.mcp.datahub.repositories.WorkingDayRepository] 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.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:573) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    ... 29 common frames omitted 
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.example.mcp.datahub.repositories.WorkingDayRepository] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1373) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    ... 
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:545) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    ... 31 common frames omitted

來源

2016-07-08 Andre Schmidt

+1

讓我猜測，數據集成沒有'spring-boot-starter-data-jpa'作爲依賴項。另外，請刪除服務類中的@ @ ComponentScan，因爲這只是無用的，它只能在'@ Configuration'類中使用。 –

+0

@ m-deinum：不幸的是，我忘記了第二個pom.xml。已連接。 spring-boot-starter-data-jpa作爲依賴項提供。 –

回答

0

我已經解決了這個問題。以下帖子相當有幫助：Spring Boot And Multi-Module Maven Projects

我將文件com.example.mcp.dataintegration.Application.java移動到com.example.mcp.Application.java。但還不清楚爲什麼我的ComponentScan和JPARepo定義被忽略...

來源

2016-07-13 11:45:06

0

你嘗試@EnableJpaRepositories與@Configuration在應用程序類，您運行。

我試過類似於我的項目之一，這是類似於你的，它爲我工作;

@Configuration 
@EnableJpaRepositories("com.example.mcp") 
@EntityScan("com.example.mcp")

WorkingDay有@Entity註解。

來源

2016-07-09 01:25:46 mokarakaya

+0

我將** @ Configuration **和** @ EnableJpaRepositories **添加到Application.class。像以前一樣的錯誤.... –

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