spring-data-cassandra-2.0.0.RELEASE + spring-boot-starter-web-1.5.7.RELEASE会导致java.lang.ClassNotFoundException

Question

我使用最新版本的spring-data-cassandra 2.0.0 .RELEASE和弹簧引导起动网的最新版本 - 1.5.7.RELEASE

<dependencies> 
    <dependency> 
     <groupId>org.springframework.data</groupId> 
     <artifactId>spring-data-cassandra</artifactId> 
     <version>2.0.0.RELEASE</version> 
    </dependency> 
    <dependency> 
     <groupId>org.springframework.boot</groupId> 
     <artifactId>spring-boot-starter-web</artifactId> 
     <version>1.5.7.RELEASE</version> 
    </dependency> 
</dependencies> 

我可以建立项目没有任何问题，但应用不与下面的异常启动：

java.lang.IllegalStateException: Error processing condition on org.springframework.boot.autoconfigure.data.cassandra.CassandraDataAutoConfiguration.cassandraMapping 
at org.springframework.boot.autoconfigure.condition.SpringBootCondition.matches(SpringBootCondition.java:64) ~[spring-boot-autoconfigure-1.5.7.RELEASE.jar:1.5.7.RELEASE] 
at org.springframework.context.annotation.ConditionEvaluator.shouldSkip(ConditionEvaluator.java:109) ~[spring-context-5.0.0.RELEASE.jar:5.0.0.RELEASE] 
at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForBeanMethod(ConfigurationClassBeanDefinitionReader.java:179) ~[spring-context-5.0.0.RELEASE.jar:5.0.0.RELEASE] 
at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForConfigurationClass(ConfigurationClassBeanDefinitionReader.java:141) ~[spring-context-5.0.0.RELEASE.jar:5.0.0.RELEASE] 
at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitions(ConfigurationClassBeanDefinitionReader.java:117) ~[spring-context-5.0.0.RELEASE.jar:5.0.0.RELEASE] 
at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:328) ~[spring-context-5.0.0.RELEASE.jar:5.0.0.RELEASE] 
at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:233) ~[spring-context-5.0.0.RELEASE.jar:5.0.0.RELEASE] 
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:271) ~[spring-context-5.0.0.RELEASE.jar:5.0.0.RELEASE] 
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:94) ~[spring-context-5.0.0.RELEASE.jar:5.0.0.RELEASE] 
at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:693) ~[spring-context-5.0.0.RELEASE.jar:5.0.0.RELEASE] 
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:531) ~[spring-context-5.0.0.RELEASE.jar:5.0.0.RELEASE] 
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) ~[spring-boot-1.5.7.RELEASE.jar:1.5.7.RELEASE] 
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693) [spring-boot-1.5.7.RELEASE.jar:1.5.7.RELEASE] 
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:360) [spring-boot-1.5.7.RELEASE.jar:1.5.7.RELEASE] 
at org.springframework.boot.SpringApplication.run(SpringApplication.java:303) [spring-boot-1.5.7.RELEASE.jar:1.5.7.RELEASE] 
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1118) [spring-boot-1.5.7.RELEASE.jar:1.5.7.RELEASE] 
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1107) [spring-boot-1.5.7.RELEASE.jar:1.5.7.RELEASE] 
at Application.main(Application.java:8) [classes/:na] 

根本原因：

Caused by: java.lang.ClassNotFoundException: org.springframework.data.cassandra.mapping.CassandraMappingContext 
at java.net.URLClassLoader.findClass(URLClassLoader.java:381) ~[na:1.8.0_144] 
at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[na:1.8.0_144] 
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335) ~[na:1.8.0_144] 
at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_144] 
at org.springframework.util.ClassUtils.forName(ClassUtils.java:255) ~[spring-core-5.0.0.RELEASE.jar:5.0.0.RELEASE] 
at org.springframework.boot.autoconfigure.condition.OnBeanCondition$BeanSearchSpec.addDeducedBeanTypeForBeanMethod(OnBeanCondition.java:356) ~[spring-boot-autoconfigure-1.5.7.RELEASE.jar:1.5.7.RELEASE] 
... 21 common frames omitted 

看起来问题出在弹簧启动自动配置，1.5.7.RELEASE，如果我更新弹簧引导启动，网络到2.0.0.M5：

<repositories> 
    <repository> 
     <id>spring-libs-snapshot</id> 
     <url>https://repo.spring.io/libs-snapshot</url> 
    </repository> 
</repositories> 

<dependency> 
     <groupId>org.springframework.boot</groupId> 
     <artifactId>spring-boot-starter-web</artifactId> 
     <version>2.0.0.M5</version> 
</dependency> 

然后应用程序启动没有任何错误。

有什么办法可以使用spring-data-cassandra和spring-boot-starter-web的最新版本，或者我应该等待spring-boot-starter-web：2.0.0的GA？

预先感谢您！

Answer 1

最新版本的Spring Data Cassandra是2.0.0，它与Spring Boot 1.x不兼容。您需要将您的依赖升级到Spring Boot 2.0 M5。