【NoClassDefFoundError】: org/apache/http/util/Args

在進行SpringCloud微服務建工搭建溫習的時候，發現以前能正常的運行的服務提供者，報了java.lang.NoClassDefFoundError的錯誤

Caused by: java.lang.NoClassDefFoundError: org/apache/http/util/Args
	at org.apache.http.conn.scheme.Scheme.<init>(Scheme.java:92) ~[httpclient-4.5.3.jar:4.5.3]
	at com.netflix.discovery.shared.transport.jersey.EurekaJerseyClientImpl$EurekaJerseyClientBuilder$MyDefaultApacheHttpClient4Config.createDefaultSslCM(EurekaJerseyClientImpl.java:274) ~[eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.shared.transport.jersey.EurekaJerseyClientImpl$EurekaJerseyClientBuilder$MyDefaultApacheHttpClient4Config.<init>(EurekaJerseyClientImpl.java:187) ~[eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.shared.transport.jersey.EurekaJerseyClientImpl$EurekaJerseyClientBuilder.build(EurekaJerseyClientImpl.java:170) ~[eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.shared.transport.jersey.JerseyEurekaHttpClientFactory$JerseyEurekaHttpClientFactoryBuilder.buildLegacy(JerseyEurekaHttpClientFactory.java:197) ~[eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.shared.transport.jersey.JerseyEurekaHttpClientFactory$JerseyEurekaHttpClientFactoryBuilder.build(JerseyEurekaHttpClientFactory.java:178) ~[eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.shared.transport.jersey.JerseyEurekaHttpClientFactory.create(JerseyEurekaHttpClientFactory.java:135) ~[eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.shared.transport.jersey.Jersey1TransportClientFactories.newTransportClientFactory(Jersey1TransportClientFactories.java:48) ~[eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.DiscoveryClient.scheduleServerEndpointTask(DiscoveryClient.java:454) ~[eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.DiscoveryClient.<init>(DiscoveryClient.java:392) ~[eureka-client-1.6.2.jar:1.6.2]
	... 45 common frames omitted
Caused by: java.lang.ClassNotFoundException: org.apache.http.util.Args
	at java.net.URLClassLoader.findClass(URLClassLoader.java:382) ~[na:1.8.0_241]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:418) ~[na:1.8.0_241]
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:355) ~[na:1.8.0_241]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[na:1.8.0_241]
	... 55 common frames omitted

進過一番搜索，發現大多數相同的報錯的緣由都是由於httpClient版本衝突，但檢測了該模塊的依賴，發現httpClient版本並不衝突。

後來發現我以前換過maven倉庫，因而換回老的倉庫，發現能正常運行。因而切換新的殘酷以後，對maven倉庫中\org\apache\httpcomponents\httpclient下的包刪除從新下，返現項目正常啓動了

總結

應該仍是httpClient版本衝突問題，有衝突解決衝突，若是沒有衝突，從新下載httpClient相關包