報錯：
2018-05-30 18:07:35.436  INFO 7912 --- [           main] s.c.a.AnnotationConfigApplicationContext : Refreshing org.spring[email protected]20ce78ec: startup date [Wed May 30 18:07:35 CST 2018]; root of context hierarchy
2018-05-30 18:07:35.652  INFO 7912 --- [           main] f.a.AutowiredAnnotationBeanPostProcessor : JSR-330 'javax.inject.Inject' annotation found and supported for autowiring
2018-05-30 18:07:35.699  INFO 7912 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'configurationPropertiesRebinderAutoConfiguration' of type [org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration$$EnhancerBySpringCGLIB$$a1cf77d7] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)

 .   ____          _            __ _ _
/\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/  ___)| |_)| | | | | || (_| |  ) ) ) )
 '  |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot ::        (v2.0.2.RELEASE)

2018-05-30 18:07:36.603  INFO 7912 --- [           main] com.zsl.client.ClientApplication         : No active profile set, falling back to default profiles: default
2018-05-30 18:07:36.616  INFO 7912 --- [           main] s.c.a.AnnotationConfigApplicationContext : Refreshing org.spring

[email protected]198d6542: startup date [Wed May 30 18:07:36 CST 2018]; parent: org.spring[email protected]20ce78ec
2018-05-30 18:07:36.977  INFO 7912 --- [           main] o.s.cloud.context.scope.GenericScope     : BeanFactory id=c0d788a6-3698-3a44-a78c-18f4704863ee
2018-05-30 18:07:36.990  INFO 7912 --- [           main] f.a.AutowiredAnnotationBeanPostProcessor : JSR-330 'javax.inject.Inject' annotation found and supported for autowiring
2018-05-30 18:07:37.047  INFO 7912 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration' of type [org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration$$EnhancerBySpringCGLIB$$a1cf77d7] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2018-05-30 18:07:37.155  WARN 7912 --- [           main] o.s.c.n.a.ArchaiusAutoConfiguration      : No spring.application.name found, defaulting to 'application'
2018-05-30 18:07:37.157  WARN 7912 --- [           main] c.n.c.sources.URLConfigurationSource     : No URLs will be polled as dynamic configuration sources.
2018-05-30 18:07:37.158  INFO 7912 --- [           main] c.n.c.sources.URLConfigurationSource     : To enable URLs as dynamic configuration sources, define System property archaius.configurationSource.additionalUrls or make config.properties available on classpath.
2018-05-30 18:07:37.162  WARN 7912 --- [           main] c.n.c.sources.URLConfigurationSource     : No URLs will be polled as dynamic configuration sources.
2018-05-30 18:07:37.162  INFO 7912 --- [           main] c.n.c.sources.URLConfigurationSource     : To enable URLs as dynamic configuration sources, define System property archaius.configurationSource.additionalUrls or make config.properties available on classpath.
2018-05-30 18:07:38.757  INFO 7912 --- [           main] o.s.j.e.a.AnnotationMBeanExporter        : Registering beans for JMX exposure on startup
2018-05-30 18:07:38.764  INFO 7912 --- [           main] o.s.j.e.a.AnnotationMBeanExporter        : Bean with name 'configurationPropertiesRebinder' has been autodetected for JMX exposure
2018-05-30 18:07:38.765  INFO 7912 --- [           main] o.s.j.e.a.AnnotationMBeanExporter        : Bean with name 'environmentManager' has been autodetected for JMX exposure
2018-05-30 18:07:38.765  INFO 7912 --- [           main] o.s.j.e.a.AnnotationMBeanExporter        : Bean with name 'refreshScope' has been autodetected for JMX exposure
2018-05-30 18:07:38.768  INFO 7912 --- [           main] o.s.j.e.a.AnnotationMBeanExporter        : Located managed bean 'environmentManager': registering with JMX server as MBean [org.springframework.cloud.context.environment:name=environmentManager,type=EnvironmentManager]
2018-05-30 18:07:38.780  INFO 7912 --- [           main] o.s.j.e.a.AnnotationMBeanExporter        : Located managed bean 'refreshScope': registering with JMX server as MBean [org.springframework.cloud.context.scope.refresh:name=refreshScope,type=RefreshScope]
2018-05-30 18:07:38.789  INFO 7912 --- [           main] o.s.j.e.a.AnnotationMBeanExporter        : Located managed bean 'configurationPropertiesRebinder': registering with JMX server as MBean [org.springframework.cloud.context.properties:name=configurationPropertiesRebinder,context=198d6542,type=ConfigurationPropertiesRebinder]
2018-05-30 18:07:38.797  INFO 7912 --- [           main] o.s.c.support.DefaultLifecycleProcessor  : Starting beans in phase 0
2018-05-30 18:07:38.805  INFO 7912 --- [           main] o.s.c.n.eureka.InstanceInfoFactory       : Setting initial instance status as: STARTING
2018-05-30 18:07:38.842  INFO 7912 --- [           main] com.netflix.discovery.DiscoveryClient    : Initializing Eureka in region us-east-1
2018-05-30 18:07:39.072  INFO 7912 --- [           main] c.n.d.provider.DiscoveryJerseyProvider   : Using JSON encoding codec LegacyJacksonJson
2018-05-30 18:07:39.072  INFO 7912 --- [           main] c.n.d.provider.DiscoveryJerseyProvider   : Using JSON decoding codec LegacyJacksonJson
2018-05-30 18:07:39.188  INFO 7912 --- [           main] c.n.d.provider.DiscoveryJerseyProvider   : Using XML encoding codec XStreamXml
2018-05-30 18:07:39.188  INFO 7912 --- [           main] c.n.d.provider.DiscoveryJerseyProvider   : Using XML decoding codec XStreamXml
2018-05-30 18:07:39.376  INFO 7912 --- [           main] c.n.d.s.r.aws.ConfigClusterResolver      : Resolving eureka endpoints via configuration
2018-05-30 18:07:39.763  INFO 7912 --- [           main] com.netflix.discovery.DiscoveryClient    : Disable delta property : false
2018-05-30 18:07:39.763  INFO 7912 --- [           main] com.netflix.discovery.DiscoveryClient    : Single vip registry refresh property : null
2018-05-30 18:07:39.764  INFO 7912 --- [           main] com.netflix.discovery.DiscoveryClient    : Force full registry fetch : false
2018-05-30 18:07:39.764  INFO 7912 --- [           main] com.netflix.discovery.DiscoveryClient    : Application is null : false
2018-05-30 18:07:39.764  INFO 7912 --- [           main] com.netflix.discovery.DiscoveryClient    : Registered Applications size is zero : true
2018-05-30 18:07:39.764  INFO 7912 --- [           main] com.netflix.discovery.DiscoveryClient    : Application version is -1: true
2018-05-30 18:07:39.764  INFO 7912 --- [           main] com.netflix.discovery.DiscoveryClient    : Getting all instance registry info from the eureka server
2018-05-30 18:07:39.916  INFO 7912 --- [           main] com.netflix.discovery.DiscoveryClient    : The response status is 200
2018-05-30 18:07:39.919  INFO 7912 --- [           main] com.netflix.discovery.DiscoveryClient    : Starting heartbeat executor: renew interval is: 30
2018-05-30 18:07:39.921  INFO 7912 --- [           main] c.n.discovery.InstanceInfoReplicator     : InstanceInfoReplicator onDemand update allowed rate per min is 4
2018-05-30 18:07:39.926  INFO 7912 --- [           main] com.netflix.discovery.DiscoveryClient    : Discovery Client initialized at timestamp 1527674859924 with initial instances count: 1
2018-05-30 18:07:39.930  INFO 7912 --- [           main] o.s.c.n.e.s.EurekaServiceRegistry        : Registering application unknown with eureka with status UP
2018-05-30 18:07:39.930  INFO 7912 --- [           main] com.netflix.discovery.DiscoveryClient    : Saw local status change event StatusChangeEvent [timestamp=1527674859930, current=UP, previous=STARTING]
2018-05-30 18:07:39.932  INFO 7912 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient    : DiscoveryClient_UNKNOWN/OnePiece: registering service...
2018-05-30 18:07:39.948  INFO 7912 --- [           main] com.zsl.client.ClientApplication         : Started ClientApplication in 6.129 seconds (JVM running for 7.74)
2018-05-30 18:07:39.952  INFO 7912 --- [      Thread-18] s.c.a.AnnotationConfigApplicationContext : Closing org.spring

[email protected]198d6542: startup date [Wed May 30 18:07:36 CST 2018]; parent: org.spring[email protected]20ce78ec
2018-05-30 18:07:39.953  INFO 7912 --- [      Thread-18] o.s.c.n.e.s.EurekaServiceRegistry        : Unregistering application unknown with eureka with status DOWN
2018-05-30 18:07:39.953  WARN 7912 --- [      Thread-18] com.netflix.discovery.DiscoveryClient    : Saw local status change event StatusChangeEvent [timestamp=1527674859953, current=DOWN, previous=UP]
2018-05-30 18:07:39.956  INFO 7912 --- [      Thread-18] o.s.c.support.DefaultLifecycleProcessor  : Stopping beans in phase 0
2018-05-30 18:07:39.958  INFO 7912 --- [      Thread-18] com.netflix.discovery.DiscoveryClient    : Shutting down DiscoveryClient ...
2018-05-30 18:07:39.974  INFO 7912 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient    : DiscoveryClient_UNKNOWN/OnePiece - registration status: 204
2018-05-30 18:07:39.975  INFO 7912 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient    : DiscoveryClient_UNKNOWN/OnePiece: registering service...
2018-05-30 18:07:39.981  INFO 7912 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient    : DiscoveryClient_UNKNOWN/OnePiece - registration status: 204
2018-05-30 18:07:39.982  INFO 7912 --- [      Thread-18] com.netflix.discovery.DiscoveryClient    : Unregistering ...
2018-05-30 18:07:39.989  INFO 7912 --- [      Thread-18] com.netflix.discovery.DiscoveryClient    : DiscoveryClient_UNKNOWN/OnePiece - deregister  status: 200
2018-05-30 18:07:39.999  INFO 7912 --- [      Thread-18] com.netflix.discovery.DiscoveryClient    : Completed shut down of DiscoveryClient
2018-05-30 18:07:40.000  INFO 7912 --- [      Thread-18] o.s.j.e.a.AnnotationMBeanExporter        : Unregistering JMX-exposed beans on shutdown
2018-05-30 18:07:40.000  INFO 7912 --- [      Thread-18] o.s.j.e.a.AnnotationMBeanExporter        : Unregistering JMX-exposed beans

Process finished with exit code 0
解決方法：
在pom.xml中加入
<dependency>  
   <groupId>org.springframework.boot</groupId>  
   <artifactId>spring-boot-starter-web</artifactId>  
</dependency>  
即可