今天遇到项目启动失败的异常，异常信息如下：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scopedTarget.eurekaClient' defined in class path resource [org/springframework/cloud/netflix/eureka/EurekaClientAutoConfiguration$RefreshableEurekaClientConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.netflix.discovery.EurekaClient]: Factory method 'eurekaClient' threw exception; nested exception is java.lang.RuntimeException: Failed to initialize DiscoveryClient!

往下排查，主要问题

Caused by: java.lang.NoSuchMethodError: com.thoughtworks.xstream.XStream.setupDefaultSecurity(Lcom/thoughtworks/xstream/XStream;)V

没这个方法！！！代码构建运行正常，问题大概就是在环境了。

XStream这个包主要提供XML解析功能，eureka-client包里面会自动导入这个依赖。搜索一下发现除了eureka客户端还有其他包引入了这个依赖，其他包只是提供实体类的作用，试着把它排除掉，运行正常。

总结：依赖冲突了