Spring boot 我的微服务未启动并抛出错误

我使用springcloud+springboot+hibernate：

Caused by: java.lang.VerifyError: class io.netty.channel.nio.NioEventLoop overrides final method pendingTasks.()I
    at java.lang.ClassLoader.defineClass1(Native Method) ~[na:1.8.0_111]
    at java.lang.ClassLoader.defineClass(ClassLoader.java:763) ~[na:1.8.0_111]
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) ~[na:1.8.0_111]
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:467) ~[na:1.8.0_111]
    at java.net.URLClassLoader.access$100(URLClassLoader.java:73) ~[na:1.8.0_111]
    at java.net.URLClassLoader$1.run(URLClassLoader.java:368) ~[na:1.8.0_111]
    at java.net.URLClassLoader$1.run(URLClassLoader.java:362) ~[na:1.8.0_111]
    at java.security.AccessController.doPrivileged(Native Method) ~[na:1.8.0_111]
    at java.net.URLClassLoader.findClass(URLClassLoader.java:361) ~[na:1.8.0_111]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[na:1.8.0_111]
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) ~[na:1.8.0_111]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_111]
    at io.netty.channel.nio.NioEventLoopGroup.newChild(NioEventLoopGroup.java:94) ~[netty-transport-4.0.37.Final.jar:4.0.37.Final]
    at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:64) ~[netty-common-4.0.27.Final.jar:4.0.27.Final]
    at io.netty.channel.MultithreadEventLoopGroup.<init>(MultithreadEventLoopGroup.java:49) ~[netty-transport-4.0.37.Final.jar:4.0.37.Final]
    at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:68) ~[netty-transport-4.0.37.Final.jar:4.0.37.Final]
    at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:63) ~[netty-transport-4.0.37.Final.jar:4.0.37.Final]
    at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:54) ~[netty-transport-4.0.37.Final.jar:4.0.37.Final]
    at com.datastax.driver.core.NettyUtil.newEventLoopGroupInstance(NettyUtil.java:139) ~[cassandra-driver-core-3.1.4.jar:na]
    at com.datastax.driver.core.NettyOptions.eventLoopGroup(NettyOptions.java:99) ~[cassandra-driver-core-3.1.4.jar:na]
    at com.datastax.driver.core.Connection$Factory.<init>(Connection.java:769) ~[cassandra-driver-core-3.1.4.jar:na]
    at com.datastax.driver.core.Cluster$Manager.init(Cluster.java:1410) ~[cassandra-driver-core-3.1.4.jar:na]
    at com.datastax.driver.core.Cluster.init(Cluster.java:159) ~[cassandra-driver-core-3.1.4.jar:na]
    at com.datastax.driver.core.Cluster.connectAsync(Cluster.java:330) ~[cassandra-driver-core-3.1.4.jar:na]
    at com.datastax.driver.core.Cluster.connectAsync(Cluster.java:305) ~[cassandra-driver-core-3.1.4.jar:na]
    at com.datastax.driver.core.Cluster.connect(Cluster.java:247) ~[cassandra-driver-core-3.1.4.jar:na]
    at org.springframework.cassandra.config.CassandraCqlSessionFactoryBean.connect(CassandraCqlSessionFactoryBean.java:100) ~[spring-cql-1.5.1.RELEASE.jar:na]
    at org.springframework.cassandra.config.CassandraCqlSessionFactoryBean.afterPropertiesSet(CassandraCqlSessionFactoryBean.java:94) ~[spring-cql-1.5.1.RELEASE.jar:na]
    at org.springframework.data.cassandra.config.CassandraSessionFactoryBean.afterPropertiesSet(CassandraSessionFactoryBean.java:103) ~[spring-data-cassandra-1.5.1.RELEASE.jar:na]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1687) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1624) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
    ... 73 common frames omitted

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据我所知，在你的类路径上有一个混合的网络版本

netty-common-4.0.27.Final netty-transport-4.0.37.Final

---

这可能是问题的原因。

或者，您可以将netty排除在任何一个依赖项之外。为此，只需将以下内容添加到不希望使用子依赖项的依赖项中：

<exclusions>
    <exclusion>
        <groupId>io.netty</groupId>
        <artifactId>netty-common</artifactId>
    </exclusion>
    <exclusion>
        <groupId>io.netty</groupId>
        <artifactId>netty-transport</artifactId>
    </exclusion>
</exclusions>

---

谢谢你的问题，这个问题我已经解决了，原因是我导入了一些未使用的依赖项