配置springcloud配置中心读取github上的配置文件报错：com.jcraft.jsch.JSchException: Auth fail解决方案

问题描述：

配置springcloud配置中心读取github上的配置文件报错：com.jcraft.jsch.JSchException: Auth fail

org.eclipse.jgit.api.errors.TransportException: https://username@gitee.com/project.git: Auth fail
    at org.eclipse.jgit.api.FetchCommand.call(FetchCommand.java:254) ~[org.eclipse.jgit-5.1.3.201810200350-r.jar:5.1.3.201810200350-r]
    at org.eclipse.jgit.api.CloneCommand.fetch(CloneCommand.java:306) ~[org.eclipse.jgit-5.1.3.201810200350-r.jar:5.1.3.201810200350-r]
    at org.eclipse.jgit.api.CloneCommand.call(CloneCommand.java:200) ~[org.eclipse.jgit-5.1.3.201810200350-r.jar:5.1.3.201810200350-r]
    at org.springframework.cloud.config.server.environment.JGitEnvironmentRepository.cloneToBasedir(JGitEnvironmentRepository.java:574) [spring-cloud-config-server-2.1.0.RC3.jar:2.1.0.RC3]
    at org.springframework.cloud.config.server.environment.JGitEnvironmentRepository.copyRepository(JGitEnvironmentRepository.java:549) [spring-cloud-config-server-2.1.0.RC3.jar:2.1.0.RC3]
    at org.springframework.cloud.config.server.environment.JGitEnvironmentRepository.createGitClient(JGitEnvironmentRepository.java:532) [spring-cloud-config-server-2.1.0.RC3.jar:2.1.0.RC3]
    at org.springframework.cloud.config.server.environment.JGitEnvironmentRepository.refresh(JGitEnvironmentRepository.java:261) [spring-cloud-config-server-2.1.0.RC3.jar:2.1.0.RC3]
   
  。。。.........
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    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:688) [na:1.8.0_201]
    at java.security.AccessController.doPrivileged(Native Method) [na:1.8.0_201]
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:687) [na:1.8.0_201]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) ~[na:1.8.0_201]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) ~[na:1.8.0_201]
    at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_201]
Caused by: org.eclipse.jgit.errors.TransportException: ssh://username@gitee.com/projec.gitt: Auth fail
    at org.eclipse.jgit.transport.JschConfigSessionFactory.getSession(JschConfigSessionFactory.java:192) ~[org.eclipse.jgit-5.1.3.201810200350-r.jar:5.1.3.201810200350-r]
    at org.eclipse.jgit.transport.SshTransport.getSession(SshTransport.java:140) ~[org.eclipse.jgit-5.1.3.201810200350-r.jar:5.1.3.201810200350-r]
    at org.eclipse.jgit.transport.TransportGitSsh$SshFetchConnection.<init>(TransportGitSsh.java:280) ~[org.eclipse.jgit-5.1.3.201810200350-r.jar:5.1.3.201810200350-r]
    at org.eclipse.jgit.transport.TransportGitSsh.openFetch(TransportGitSsh.java:170) ~[org.eclipse.jgit-5.1.3.201810200350-r.jar:5.1.3.201810200350-r]
    at org.eclipse.jgit.transport.FetchProcess.executeImp(FetchProcess.java:137) ~[org.eclipse.jgit-5.1.3.201810200350-r.jar:5.1.3.201810200350-r]
    at org.eclipse.jgit.transport.FetchProcess.execute(FetchProcess.java:123) ~[org.eclipse.jgit-5.1.3.201810200350-r.jar:5.1.3.201810200350-r]
    at org.eclipse.jgit.transport.Transport.fetch(Transport.java:1271) ~[org.eclipse.jgit-5.1.3.201810200350-r.jar:5.1.3.201810200350-r]
    at org.eclipse.jgit.api.FetchCommand.call(FetchCommand.java:243) ~[org.eclipse.jgit-5.1.3.201810200350-r.jar:5.1.3.201810200350-r]
    ... 47 common frames omitted
Caused by: com.jcraft.jsch.JSchException: Auth fail
    at com.jcraft.jsch.Session.connect(Session.java:519) ~[jsch-0.1.54.jar:na]
    at org.eclipse.jgit.transport.JschConfigSessionFactory.getSession(JschConfigSessionFactory.java:146) ~[org.eclipse.jgit-5.1.3.201810200350-r.jar:5.1.3.201810200350-r]
    ... 54 common frames omitted

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原因分析：

起初我用git Bash 窗格去clone项目提示我

git@github.com: Permission denied (publickey).
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
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解决1：

我用 $ ssh-keygen -t rsa -C “填写自己的邮箱”，生成密钥并配置到github的密钥中 ，解决我本地连接git失败的问题

$ ssh-keygen -t rsa -C “填写自己的邮箱”

详见以下两篇博客
https://blog.csdn.net/qq_45242696/article/details/97259563
https://blog.csdn.net/qq_43768946/article/details/90411154

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验证1：

本以为可以解决springcloud配置中心读取github上的配置文件报错 的问题，但是还是老样子，

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分析2：

就又去查阅了资料发现：
从2020年几月份开始，github上的master分支变为了mian分支。因此yml中读取分支的配置应该是：***label: main***

原配置文件：

修改为 main：

注意：yml中的 label改了，那么访问的地址也需要改 localhost:xxx/main/config-dev.yml

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验证2：

注：  用https做 uri的请求访问成功 ，
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https结果：

本着好事成双的原则，就寻思这都改好了那 uri 不都是一样的也就是换了个形式，就改成ssh的去试了一下，结果试试就逝世~~~~ 喵了个咪 ~emo~
，一夜回到解放前

org.eclipse.jgit.api.errors.TransportException: ssh://username@gitee.com/project.git: Auth fail
    at org.eclipse.jgit.api.FetchCommand.call(FetchCommand.java:254) ~[org.eclipse.jgit-5.1.3.201810200350-r.jar:5.1.3.201810200350-r]
    at org.eclipse.jgit.api.CloneCommand.fetch(CloneCommand.java:306) ~[org.eclipse.jgit-5.1.3.201810200350-r.jar:5.1.3.201810200350-r]
    at org.eclipse.jgit.api.CloneCommand.call(CloneCommand.java:200) ~[org.eclipse.jgit-5.1.3.201810200350-r.jar:5.1.3.201810200350-r]
    at org.springframework.cloud.config.server.environment.JGitEnvironmentRepository.cloneToBasedir(JGitEnvironmentRepository.java:574) [spring-cloud-config-server-2.1.0.RC3.jar:2.1.0.RC3]
    at org.springframework.cloud.config.server.environment.JGitEnvironmentRepository.copyRepository(JGitEnvironmentRepository.java:549) [spring-cloud-config-server-2.1.0.RC3.jar:2.1.0.RC3]
    at org.springframework.cloud.config.server.environment.JGitEnvironmentRepository.createGitClient(JGitEnvironmentRepository.java:532) [spring-cloud-config-server-2.1.0.RC3.jar:2.1.0.RC3]
    at org.springframework.cloud.config.server.environment.JGitEnvironmentRepository.refresh(JGitEnvironmentRepository.java:261) [spring-cloud-config-server-2.1.0.RC3.jar:2.1.0.RC3]
   
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分析3：

想着可能是密钥生成的有问题？？

Auth fail，认证失败。我们生成ssh公钥时，使用的命令为

ssh-keygen -t rsa -C "xx@xx.com"
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生成的私钥为： OPENSSH PRIVATE KEY Spring Cloud config组件可能不支持这种格式的私钥验证连接

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解决3：

用另一种命令生成其他格式的密钥：

ssh-keygen -m PEM -t rsa -b 4096 -C "xx@xx.com"
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生成的私钥为：RSA PRIVATE KEY
重新在gitHub上设置公钥，问题解决。
参考文章：https://blog.csdn.net/keyue0459/article/details/105042063

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希望本文可以帮助各位朋友剥开迷雾，走向光明，为您节省宝贵的时间，也感谢文中其他博客带我给我启发，祝各位前程似锦。