SpringCloud (九)关于SpringCloud Finchley.RC2版本对Config的bug，对下一节的提前说明

在下一节，准备写Spring Cloud Config的集成，但写的过程中，发现个bug。在通过Spring Cloud Config Server访问git仓库配置时，会报异常

java.lang.StringIndexOutOfBoundsException: String index out of range: -1
	at java.lang.String.substring(String.java:1967) ~[na:1.8.0_161]
	at org.springframework.cloud.config.server.environment.HttpClientConfigurableHttpConnectionFactory.lookupHttpClientBuilder(HttpClientConfigurableHttpConnectionFactory.java:69) ~[spring-cloud-config-server-2.0.0.RC2.jar:2.0.0.RC2]
	at org.springframework.cloud.config.server.environment.HttpClientConfigurableHttpConnectionFactory.create(HttpClientConfigurableHttpConnectionFactory.java:56) ~[spring-cloud-config-server-2.0.0.RC2.jar:2.0.0.RC2]
	at org.eclipse.jgit.transport.TransportHttp.httpOpen(TransportHttp.java:830) ~[org.eclipse.jgit-4.11.0.201803080745-r.jar:4.11.0.201803080745-r]
	at org.eclipse.jgit.transport.TransportHttp.connect(TransportHttp.java:491) ~[org.eclipse.jgit-4.11.0.201803080745-r.jar:4.11.0.201803080745-r]
	at org.eclipse.jgit.transport.TransportHttp.openFetch(TransportHttp.java:345) ~[org.eclipse.jgit-4.11.0.201803080745-r.jar:4.11.0.201803080745-r]
	at org.eclipse.jgit.transport.FetchProcess.executeImp(FetchProcess.java:137) ~[org.eclipse.jgit-4.11.0.201803080745-r.jar:4.11.0.201803080745-r]
	at org.eclipse.jgit.transport.FetchProcess.execute(FetchProcess.java:123) ~[org.eclipse.jgit-4.11.0.201803080745-r.jar:4.11.0.201803080745-r]
	at org.eclipse.jgit.transport.Transport.fetch(Transport.java:1269) ~[org.eclipse.jgit-4.11.0.201803080745-r.jar:4.11.0.201803080745-r]
	at org.eclipse.jgit.api.FetchCommand.call(FetchCommand.java:241) ~[org.eclipse.jgit-4.11.0.201803080745-r.jar:4.11.0.201803080745-r]
	at org.eclipse.jgit.api.CloneCommand.fetch(CloneCommand.java:306) ~[org.eclipse.jgit-4.11.0.201803080745-r.jar:4.11.0.201803080745-r]
	at org.eclipse.jgit.api.CloneCommand.call(CloneCommand.java:200) ~[org.eclipse.jgit-4.11.0.201803080745-r.jar:4.11.0.201803080745-r]
	at org.springframework.cloud.config.server.environment.JGitEnvironmentRepository.cloneToBasedir(JGitEnvironmentRepository.java:560) ~[spring-cloud-config-server-2.0.0.RC2.jar:2.0.0.RC2]
	at org.springframework.cloud.config.server.environment.JGitEnvironmentRepository.copyRepository(JGitEnvironmentRepository.java:535) ~[spring-cloud-config-server-2.0.0.RC2.jar:2.0.0.RC2]
	at org.springframework.cloud.config.server.environment.JGitEnvironmentRepository.createGitClient(JGitEnvironmentRepository.java:518) ~[spring-cloud-config-server-2.0.0.RC2.jar:2.0.0.RC2]
	at org.springframework.cloud.config.server.environment.JGitEnvironmentRepository.refresh(JGitEnvironmentRepository.java:259) ~[spring-cloud-config-server-2.0.0.RC2.jar:2.0.0.RC2]
	at org.springframework.cloud.config.server.environment.JGitEnvironmentRepository.getLocations(JGitEnvironmentRepository.java:238) ~[spring-cloud-config-server-2.0.0.RC2.jar:2.0.0.RC2]
	...........
	..........

具体原因如下图： 在初始化 createGitClient()时，在做字符串裁剪时，根据我的配置，是没有 ''字符的，故出现异常信息

String index out of range: -1

解决方案：

升级SpringCloud版本，将 Finchley.RC2 升级为 Finchley.SR2即可。