到目前为止的第一个问题。Autowire CassandraRepository 遇到问题。我有一个多数据库项目。我想使用 Postgres、Mongo 和 Cassandra。我让 Mongo 工作，但 Cassandra 很痛苦。我跟着 Cassandra Spring Repository Guide Link (6. Repository) Link 2 (5. Repository)，这个指南不是由 Spring Guys 完成的，它刚刚提到它与 mongo 相同，但那不是真的。我对 mongo 做了同样的事情，偶然发现了这个错误：Link with No qualifying Bean found to Autowire。
发现一些谷歌开发组提到了这个问题，并用一些额外的 CassandraConfiguration 类解决了这个问题。现在应该创建 Bean，但我得到了一个新的错误，我认为这是一个更好的错误。
org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.cassandra.core.CassandraAdminOperations]: Factory method 'cassandraTemplate' threw exception; nested exception is java.lang.NoClassDefFoundError: org/springframework/cassandra/core/Cancellable
但此时谷歌不知道答案，spring boot 是相当新的......有人尝试将 CassandraRepository 自动装配到现有的 Spring-Boot 项目吗？你可以帮帮我吗？
找到解决方案：
- 删除@Repository
- 删除POM.XML中的版本，这些版本是官网给出的，但相互冲突
这是我所有的文件：
存储库：
package com.kage.bigdata.bida.repository.cassandra;
import com.kage.bigdata.bida.model.QuestionEntity;
import java.util.List;
import org.springframework.data.cassandra.repository.TypedIdCassandraRepository;
import org.springframework.stereotype.Repository;
/**
*
* @author bl4ckbird
*/
@Repository
public interface QCassandraRepository extends TypedIdCassandraRepository<QuestionEntity, Long>{
public List<QuestionEntity> findAll();
}
实体：
package com.kage.bigdata.bida.model;
import lombok.Getter;
import lombok.Setter;
import org.springframework.data.cassandra.mapping.PrimaryKey;
import org.springframework.data.cassandra.mapping.Table;
/**
*
* @author bl4ckbird
*/
@Table
public class QuestionEntity {
@PrimaryKey
private long id;
@Getter
@Setter
private String question;
@Override
public String toString() {
return String.format(
"Question[id=%s, Question='%s']",
id, question);
}
}
服务：
package com.kage.bigdata.bida.service.impl;
import com.kage.bigdata.bida.model.Question;
import com.kage.bigdata.bida.model.QuestionEntity;
import com.kage.bigdata.bida.repository.cassandra.QCassandraRepository;
import com.kage.bigdata.bida.repository.QuestionRepository;
import com.kage.bigdata.bida.service.QuestionService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
/**
*
* @author bl4ckbird
*/
@Service
public class QuestionServiceImpl implements QuestionService{
@Autowired
QuestionRepository questionRepository;
@Autowired
QCassandraRepository cassandraRepository;
public QuestionServiceImpl(){};
@Override
public void test() {
Question q = new Question();
q.setQuestion("Frage");
questionRepository.save(q);
System.out.println(questionRepository.findAll().get(0));
QuestionEntity q2 = new QuestionEntity();
q2.setQuestion("Frage2");
cassandraRepository.save(q2);
System.out.println(cassandraRepository.findAll().get(0));
}
}
配置：
package com.kage.bigdata.bida.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.cassandra.config.SchemaAction;
import org.springframework.data.cassandra.config.java.AbstractCassandraConfiguration;
import org.springframework.data.cassandra.convert.MappingCassandraConverter;
import org.springframework.data.cassandra.core.CassandraOperations;
import org.springframework.data.cassandra.core.CassandraTemplate;
import org.springframework.data.cassandra.mapping.BasicCassandraMappingContext;
import org.springframework.data.cassandra.repository.config.EnableCassandraRepositories;
/**
*
* @author bl4ckbird
*/
@Configuration
@EnableCassandraRepositories("com.kage.bigdata.bida.repository.cassandra")
public class CassandraConfig extends AbstractCassandraConfiguration{
private static final String KEYSPACE_NAME = "Test_Cluster";
private static final String CONTACT_POINTS = "127.0.0.1";
private static final int PORT = 9042;
private static final int MAX_POOL_CONNECTION = 50;
@Override
protected String getKeyspaceName() {
return KEYSPACE_NAME;
}
@Override
protected String getContactPoints() {
return CONTACT_POINTS;
}
@Override
protected int getPort() {
return PORT;
}
@Override
public SchemaAction getSchemaAction() {
return SchemaAction.RECREATE_DROP_UNUSED;
}
@Bean
public CassandraOperations operations() throws Exception {
return new CassandraTemplate(session().getObject(), new MappingCassandraConverter(new BasicCassandraMappingContext()));
}
}
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.kage.bigdata</groupId>
<artifactId>bida</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.7</maven.compiler.source>
<maven.compiler.target>1.7</maven.compiler.target>
</properties>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.2.3.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
<version>1.2.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-cassandra</artifactId>
<version>1.2.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.16.2</version>
<scope>provided</scope>
</dependency>
</dependencies>
</project>
应用：
package com.kage.bigdata.bida;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
/**
*
* @author bl4ckbird
*/
@SpringBootApplication
public class Application {
public static void main(String[] args) throws Throwable {
SpringApplication app = new SpringApplication(Application.class);
app.run();
}
}
最后但同样重要的是，Stacktrace：
Scanning for projects...
------------------------------------------------------------------------
Building bida 1.0-SNAPSHOT
------------------------------------------------------------------------
--- exec-maven-plugin:1.2.1:exec (default-cli) @ bida ---
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v1.2.3.RELEASE)
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cassandraTemplate' defined in class path resource [com/kage/bigdata/bida/config/CassandraConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.cassandra.core.CassandraAdminOperations]: Factory method 'cassandraTemplate' threw exception; nested exception is java.lang.NoClassDefFoundError: org/springframework/cassandra/core/Cancellable
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1210)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
at org.spriegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162)
... 52 common frames omitted
Caused by: java.lang.ClassNotFoundException: org.springframework.cassandra.core.Cancellable
at java.net.URLClassLoader$1.run(URLClassLoader.java:372)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 63 common frames omitted
ngframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:755)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:686)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:320)
at com.kage.bigdata.bida.Application.main(Application.java:30)
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.kage.bigdata.bida.service.QuestionService com.kage.bigdata.bida.controller.QuestionController.questionService; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'questionServiceImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.kage.bigdata.bida.repository.cassandra.QCassandraRepository com.kage.bigdata.bida.service.impl.QuestionServiceImpl.cassandraRepository; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'QCassandraRepository': Cannot resolve reference to bean 'cassandraTemplate' while setting bean property 'cassandraTemplate'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cassandraTemplate' defined in class path resource [com/kage/bigdata/bida/config/CassandraConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.cassandra.core.CassandraAdminOperations]: Factory method 'cassandraTemplate' threw exception; nested exception is java.lang.NoClassDefFoundError: org/springframework/cassandra/core/Cancellable
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:561)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331)
... 14 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'questionServiceImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.kage.bigdata.bida.repository.cassandra.QCassandraRepository com.kage.bigdata.bida.service.impl.QuestionServiceImpl.cassandraRepository; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'QCassandraRepository': Cannot resolve reference to bean 'cassandraTemplate' while setting bean property 'cassandraTemplate'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cassandraTemplate' defined in class path resource [com/kage/bigdata/bida/config/CassandraConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.cassandra.core.CassandraAdminOperations]: Factory method 'cassandraTemplate' threw exception; nested exception is java.lang.NoClassDefFoundError: org/springframework/cassandra/core/Cancellable
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1210)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1120)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1044)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:942)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:533)
... 16 more
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.kage.bigdata.bida.repository.cassandra.QCassandraRepository com.kage.bigdata.bida.service.impl.QuestionServiceImpl.cassandraRepository; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'QCassandraRepository': Cannot resolve reference to bean 'cassandraTemplate' while setting bean property 'cassandraTemplate'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cassandraTemplate' defined in class path resource [com/kage/bigdata/bida/config/CassandraConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.cassandra.core.CassandraAdminOperations]: Factory method 'cassandraTemplate' threw exception; nested exception is java.lang.NoClassDefFoundError: org/springframework/cassandra/core/Cancellable
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:561)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331)
... 27 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'QCassandraRepository': Cannot resolve reference to bean 'cassandraTemplate' while setting bean property 'cassandraTemplate'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cassandraTemplate' defined in class path resource [com/kage/bigdata/bida/config/CassandraConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.cassandra.core.CassandraAdminOperations]: Factory method 'cassandraTemplate' threw exception; nested exception is java.lang.NoClassDefFoundError: org/springframework/cassandra/core/Cancellable
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:359)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:108)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1477)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1222)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1120)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1044)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:942)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:533)
... 29 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cassandraTemplate' defined in class path resource [com/kage/bigdata/bida/config/CassandraConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.cassandra.core.CassandraAdminOperations]: Factory method 'cassandraTemplate' threw exception; nested exception is java.lang.NoClassDefFoundError: org/springframework/cassandra/core/Cancellable
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:599)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1119)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1014)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:351)
... 42 more
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.cassandra.core.CassandraAdminOperations]: Factory method 'cassandraTemplate' threw exception; nested exception is java.lang.NoClassDefFoundError: org/springframework/cassandra/core/Cancellable
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189)
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588)
... 51 more
Caused by: java.lang.NoClassDefFoundError: org/springframework/cassandra/core/Cancellable
at org.springframework.data.cassandra.config.java.AbstractCassandraConfiguration.cassandraTemplate(AbstractCassandraConfiguration.java:85)
at com.kage.bigdata.bida.config.CassandraConfig$$EnhancerBySpringCGLIB$$ed9225d9.CGLIB$cassandraTemplate$9(<generated>)
at com.kage.bigdata.bida.config.CassandraConfig$$EnhancerBySpringCGLIB$$ed9225d9$$FastClassBySpringCGLIB$$28d9812.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:309)
at com.kage.bigdata.bida.config.CassandraConfig$$EnhancerBySpringCGLIB$$ed9225d9.cassandraTemplate(<generated>)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162)
... 52 more
Caused by: java.lang.ClassNotFoundException: org.springframework.cassandra.core.Cancellable
at java.net.URLClassLoader$1.run(URLClassLoader.java:372)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 63 more