Springboot2.0集成 cassandra guava问题

1Caused by: java.lang.NoClassDefFoundError: com/google/common/util/concurrent/FutureFallback
2	at com.datastax.driver.core.GuavaCompatibility.selectImplementation(GuavaCompatibility.java:136) ~[cassandra-driver-core-3.4.0.jar:?]
3	at com.datastax.driver.core.GuavaCompatibility.<clinit>(GuavaCompatibility.java:52) ~[cassandra-driver-core-3.4.0.jar:?]
4	at com.datastax.driver.core.Cluster.<clinit>(Cluster.java:68) ~[cassandra-driver-core-3.4.0.jar:?]
5	at org.springframework.boot.autoconfigure.cassandra.CassandraAutoConfiguration.cassandraCluster(CassandraAutoConfiguration.java:67) ~[spring-boot-autoconfigure-2.0.3.RELEASE.jar:2.0.3.RELEASE]
6	at org.springframework.boot.autoconfigure.cassandra.CassandraAutoConfiguration$$EnhancerBySpringCGLIB$$2c22fb7a.CGLIB$cassandraCluster$0(<generated>) ~[spring-boot-autoconfigure-2.0.3.RELEASE.jar:2.0.3.RELEASE]
7	at org.springframework.boot.autoconfigure.cassandra.CassandraAutoConfiguration$$EnhancerBySpringCGLIB$$2c22fb7a$$FastClassBySpringCGLIB$$ee73f3df.invoke(<generated>) ~[spring-boot-autoconfigure-2.0.3.RELEASE.jar:2.0.3.RELEASE]
8	at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) ~[spring-core-5.0.7.RELEASE.jar:5.0.7.RELEASE]
9	at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:361) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE]
10	at org.springframework.boot.autoconfigure.cassandra.CassandraAutoConfiguration$$EnhancerBySpringCGLIB$$2c22fb7a.cassandraCluster(<generated>) ~[spring-boot-autoconfigure-2.0.3.RELEASE.jar:2.0.3.RELEASE]
11	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_91]
12	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_91]
13	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_91]
14	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_91]

原因：项目中指定了guava版本为27，Cassandra驱动在判断guava>26版本时出现问题，有bug，最新版本已fix

解决方法:

1.修改Cassandra驱动版本,显示指定版本

2.重写Cassandra自带的判断guava版本的类:com.datastax.driver.core.GuavaCompatibility, 可参考最新的驱动中的写法

3.不在pom里面指定guava版本